Sidong Yang [Fri, 28 Aug 2020 12:45:53 +0000 (12:45 +0000)]
drm/vkms: avoid warning in vkms_get_vblank_timestamp
This patch avoid the warning in vkms_get_vblank_timestamp when vblanks
aren't enabled. When running igt test kms_cursor_crc just after vkms
module, the warning raised like below. Initial value of vblank time is
zero and hrtimer.node.expires is also zero if vblank aren't enabled
before. vkms module isn't real hardware but just virtual hardware
module. so vkms can't generate a resonable timestamp when hrtimer is
off. it's best to grab the current time.
[106444.464503] [IGT] kms_cursor_crc: starting subtest pipe-A-cursor-size-change
[106444.471475] WARNING: CPU: 0 PID: 10109 at
vkms_get_vblank_timestamp+0x42/0x50 [vkms]
[106444.471511] CPU: 0 PID: 10109 Comm: kms_cursor_crc Tainted: G W OE
5.9.0-rc1+ #6
[106444.471514] RIP: 0010:vkms_get_vblank_timestamp+0x42/0x50 [vkms]
[106444.471528] Call Trace:
[106444.471551] drm_get_last_vbltimestamp+0xb9/0xd0 [drm]
[106444.471566] drm_reset_vblank_timestamp+0x63/0xe0 [drm]
[106444.471579] drm_crtc_vblank_on+0x85/0x150 [drm]
[106444.471582] vkms_crtc_atomic_enable+0xe/0x10 [vkms]
[106444.471592] drm_atomic_helper_commit_modeset_enables+0x1db/0x230
[drm_kms_helper]
[106444.471594] vkms_atomic_commit_tail+0x38/0xc0 [vkms]
[106444.471601] commit_tail+0x97/0x130 [drm_kms_helper]
[106444.471608] drm_atomic_helper_commit+0x117/0x140 [drm_kms_helper]
[106444.471622] drm_atomic_commit+0x4a/0x50 [drm]
[106444.471629] drm_atomic_helper_set_config+0x63/0xb0 [drm_kms_helper]
[106444.471642] drm_mode_setcrtc+0x1d9/0x7b0 [drm]
[106444.471654] ? drm_mode_getcrtc+0x1a0/0x1a0 [drm]
[106444.471666] drm_ioctl_kernel+0xb6/0x100 [drm]
[106444.471677] drm_ioctl+0x3ad/0x470 [drm]
[106444.471688] ? drm_mode_getcrtc+0x1a0/0x1a0 [drm]
[106444.471692] ? tomoyo_file_ioctl+0x19/0x20
[106444.471694] __x64_sys_ioctl+0x96/0xd0
[106444.471697] do_syscall_64+0x37/0x80
[106444.471699] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Cc: Haneen Mohammed <hamohammed.sa@gmail.com>
Cc: Melissa Wen <melissa.srw@gmail.com>
Signed-off-by: Sidong Yang <realwakka@gmail.com>
Reviewed-by: Melissa Wen <melissa.srw@gmail.com>
Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200828124553.2178-1-realwakka@gmail.com
Melissa Wen [Tue, 25 Aug 2020 11:45:32 +0000 (08:45 -0300)]
drm/vkms: add alpha-premultiplied color blending
The VKMS blend function was ignoring the alpha channel and just
overwriting vaddr_src with vaddr_dst. This XRGB approach triggers a
warning when running the kms_cursor_crc/cursor-alpha-transparent test
case. In IGT, cairo_format_argb32 uses premultiplied alpha (according to
documentation). Also current DRM assumption is that alpha is
premultiplied. Therefore, this patch considers premultiplied alpha
blending eq to compose vaddr_src with vaddr_dst.
This change removes the following cursor-alpha-transparent warning:
"Suspicious CRC: All values are 0."
V2:
- static for local functions
- const for the read-only variable argb_src
- replaces variable names
- drops unnecessary comment
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Cc: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Reviewed-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200825114532.abzdooluny2ekzvm@smtp.gmail.com
Laurent Pinchart [Mon, 24 Aug 2020 00:32:54 +0000 (03:32 +0300)]
drm: panel: Fix bpc for OrtusTech COM43H4M85ULC panel
The OrtusTech COM43H4M85ULC panel is a 18-bit RGB panel. Commit
f098f168e91c ("drm: panel: Fix bus format for OrtusTech COM43H4M85ULC
panel") has fixed the bus formats, but forgot to address the bpc value.
Set it to 6.
Fixes:
f098f168e91c ("drm: panel: Fix bus format for OrtusTech COM43H4M85ULC panel")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200824003254.21904-1-laurent.pinchart@ideasonboard.com
Vinod Koul [Fri, 28 Aug 2020 07:42:50 +0000 (13:12 +0530)]
drm/bridge: Fix the dsi remote end-points
DSI end-points are supposed to be at node 0 and node 1 as per binding.
So fix this and use node 0 and node 1 for dsi.
Reported-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Fixes:
23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200828074251.3788165-1-vkoul@kernel.org
Robert Chiras [Fri, 28 Aug 2020 14:58:33 +0000 (17:58 +0300)]
drm/panel: rm67191: Remove CLOCK_NON_CONTINUOUS flag
The flag MIPI_DSI_CLOCK_NON_CONTINUOUS was wrong used in the DSI driver,
so it was added to this panel, but not necessary.
So, remove this flag since it is not needed.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1598626713-5595-1-git-send-email-robert.chiras@oss.nxp.com
Jagan Teki [Sat, 29 Aug 2020 16:33:28 +0000 (22:03 +0530)]
drm/panel: simple: Add AM-1280800N3TZQW-T00H
Add Ampire, AM-1280800N3TZQW-T00H 10.1" TFT LCD panel timings.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200829163328.249211-2-jagan@amarulasolutions.com
Jagan Teki [Sat, 29 Aug 2020 16:33:27 +0000 (22:03 +0530)]
dt-bindings: display: simple: Add AM-1280800N3TZQW-T00H
Add dt-bindings for 10.1" TFT LCD module from Ampire Co. Ltd.
as part of panel-simple.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200829163328.249211-1-jagan@amarulasolutions.com
Maxime Ripard [Sat, 4 Jul 2020 13:38:03 +0000 (15:38 +0200)]
drm/sun4i: lvds: Invert the LVDS polarity
The LVDS controller can invert the polarity / lanes of the LVDS output.
The default polarity causes some issues on some panels.
However, U-Boot has always used the opposite polarity without any reported
issue, and the only currently supported LVDS panel in-tree (the TBS A711)
seems to be able to work with both settings.
Let's just use the same polarity than U-Boot to be more consistent and
hopefully support all the panels.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Cc: Ondrej Jirman <megous@megous.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200704133803.37330-1-maxime@cerno.tech
Colin Ian King [Wed, 26 Aug 2020 08:47:27 +0000 (09:47 +0100)]
drm/mgag200: fix spelling mistake "expeced" -> "expected"
There is a spelling mistake in a drm_warn message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826084727.42703-1-colin.king@canonical.com
Enric Balletbo i Serra [Wed, 26 Aug 2020 08:15:25 +0000 (10:15 +0200)]
drm/bridge: ps8640: Print an error if VDO control fails
Print an error message inside ps8640_bridge_vdo_control() function when
it fails so we can simplify a bit the callers, they will only need to
check the error code.
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Bilal Wasim <bwasim.lkml@gmail.com>
Tested-by: Bilal Wasim <bwasim.lkml@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826081526.674866-5-enric.balletbo@collabora.com
Enric Balletbo i Serra [Wed, 26 Aug 2020 08:15:24 +0000 (10:15 +0200)]
drm/bridge: ps8640: Return an error for incorrect attach flags
Bridge drivers that implement the new model only shall return an error
from their attach() handler when the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag
is not set. So make sure we return an error because only the new
drm_bridge model is supported.
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Bilal Wasim <bwasim.lkml@gmail.com>
Tested-by: Bilal Wasim <bwasim.lkml@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826081526.674866-4-enric.balletbo@collabora.com
Enric Balletbo i Serra [Wed, 26 Aug 2020 08:15:23 +0000 (10:15 +0200)]
drm/bridge: ps8640: Get the EDID from eDP control
The PS8640 DSI-to-eDP bridge can retrieve the EDID, so implement the
.get_edid callback and set the flag to indicate the core to use it.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826081526.674866-3-enric.balletbo@collabora.com
Enric Balletbo i Serra [Wed, 26 Aug 2020 08:15:22 +0000 (10:15 +0200)]
drm/bridge_connector: Set default status connected for eDP connectors
In an eDP application, HPD is not required and on most bridge chips
useless. If HPD is not used, we need to set initial status as connected,
otherwise the connector created by the drm_bridge_connector API remains
in an unknown state.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Bilal Wasim <bwasim.lkml@gmail.com>
Tested-by: Bilal Wasim <bwasim.lkml@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826081526.674866-2-enric.balletbo@collabora.com
Tian Tao [Wed, 19 Aug 2020 09:23:34 +0000 (17:23 +0800)]
drm/hisilicon: Use drm_err instead of DRM_ERROR in hibmc_drm_drv
Use drm_err instead of DRM_ERROR in hibmc_drm_drv
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1597829014-39942-5-git-send-email-tiantao6@hisilicon.com
Tian Tao [Wed, 19 Aug 2020 09:23:33 +0000 (17:23 +0800)]
drm/hisilicon: Use drm_err instead of DRM_ERROR in hibmc_drm_de
Use drm_err instead of DRM_ERROR in hibmc_drm_de
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1597829014-39942-4-git-send-email-tiantao6@hisilicon.com
Tian Tao [Wed, 19 Aug 2020 09:23:32 +0000 (17:23 +0800)]
drm/hisilicon: Use drm_err instead of DRM_ERROR in hibmc_drm_vdac
Use drm_err instead of DRM_ERROR in hibmc_drm_vdac
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1597829014-39942-3-git-send-email-tiantao6@hisilicon.com
Tian Tao [Wed, 19 Aug 2020 09:23:31 +0000 (17:23 +0800)]
drm/hisilicon: Use drm_err instead of DRM_ERROR in hibmc_ttm
Use drm_err instead of DRM_ERROR in hibmc_ttm.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1597829014-39942-2-git-send-email-tiantao6@hisilicon.com
Dave Airlie [Tue, 11 Aug 2020 07:46:58 +0000 (17:46 +1000)]
drm/ttm: drop bus.size from bus placement.
This is always calculated the same, and only used in a couple of places.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200811074658.58309-2-airlied@gmail.com
Dave Airlie [Tue, 11 Aug 2020 07:46:57 +0000 (17:46 +1000)]
drm/ttm: init mem->bus in common code.
The drivers all do the same thing here.
Reviewed-by: Christian König <christian.koenig@amd.com> for both.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200811074658.58309-1-airlied@gmail.com
Nadezda Lutovinova [Wed, 19 Aug 2020 14:37:56 +0000 (17:37 +0300)]
drm/brige/megachips: Add checking if ge_b850v3_lvds_init() is working correctly
If ge_b850v3_lvds_init() does not allocate memory for ge_b850v3_lvds_ptr,
then a null pointer dereference is accessed.
The patch adds checking of the return value of ge_b850v3_lvds_init().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Nadezda Lutovinova <lutovinova@ispras.ru>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200819143756.30626-1-lutovinova@ispras.ru
Vinay Simha BN [Sun, 16 Aug 2020 05:50:41 +0000 (11:20 +0530)]
drm/bridge/tc358775: Fix for PTR_ERR
passing zero to 'PTR_ERR'
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Vinay Simha BN <simhavcs@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1597557042-5154-1-git-send-email-simhavcs@gmail.com
Douglas Anderson [Fri, 21 Aug 2020 15:35:15 +0000 (08:35 -0700)]
drm: panel: simple: Add KD116N21-30NV-A010
Values come from the vendor and have been tested on hardware.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200821083454.2.Idf25356dff4b36c62704188c3e3d39a2010d6f6a@changeid
Douglas Anderson [Fri, 21 Aug 2020 15:35:14 +0000 (08:35 -0700)]
dt-bindings: display: simple: Add KD116N21-30NV-A010 compatible
The KD116N21-30NV-A010 is a pretty standard eDP panel. Add it to the
list of compatible strings.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200821083454.1.I61e6248813d797c9eeebfbb7019c713aa71c4419@changeid
Tomi Valkeinen [Wed, 12 Aug 2020 11:26:25 +0000 (14:26 +0300)]
drm/tidss: implement WA for AM65xx erratum i2000
This patch implements WA for AM65xx erratum i2000, which causes YUV
formats to show wrong colors.
An earlier patch removed a partial WA:
a8d9d7da1546349f18eb2d6b6b3a04bdeb38719d ("drm/tidss: remove AM65x PG1 YUV erratum code")
The patch explains the reasoning for removal. The change in plans has
been that it has become clear that there are and will be users for PG1
SoCs and as such it's good to implement the WA for PG1s.
This patch adds the WA back so that it is only used on SR1.0 (which is
the new name for PG1). The previous WA code didn't check the SoC
revision, which this patch does.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200812112625.59897-1-tomi.valkeinen@ti.com
Reviewed-by: Jyri Sarha <jsarha@ti.com>
Colin Ian King [Wed, 5 Aug 2020 10:20:15 +0000 (11:20 +0100)]
drm/omap: fix spelling mistake "propert" -> "property"
There is a spelling mistake in a pr_err message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200805102015.14891-1-colin.king@canonical.com
Linus Walleij [Fri, 26 Jun 2020 22:06:06 +0000 (00:06 +0200)]
drm: omapdrm: Delete surplus GPIO includes
The OMAP DRM driver includes <linux/gpio.h> into the two
hdmi4.c and hdmi5.c files but does not use any symbols from
these files. Drop the includes.
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200626220606.340937-1-linus.walleij@linaro.org
Paul Cercueil [Thu, 20 Aug 2020 12:12:56 +0000 (14:12 +0200)]
drm/panel: novatek,nt39016: Remove 'dev' field in priv struct
There is already a 'struct device' pointer in the drm_panel structure,
that we can access easily from our priv structure, so there's no need
for a separate 'dev' field there.
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200820121256.32037-3-paul@crapouillou.net
Paul Cercueil [Thu, 20 Aug 2020 12:12:55 +0000 (14:12 +0200)]
drm/panel: novatek,nt39016: Reorder calls in probe
The drm_panel_of_backlight() function must be called after
drm_panel_init(), according to the function's documentation; otherwise
the backlight won't be properly initialized.
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200820121256.32037-2-paul@crapouillou.net
Christian König [Wed, 19 Aug 2020 13:27:48 +0000 (15:27 +0200)]
drm/ttm: fix broken merge between drm-next and drm-misc-next
drm-next reverted the changes to ttm_tt_create() to do the
NULL check inside the function, but drm-misc-next adds new
users of this approach.
Re-apply the NULL check change inside the function to fix this.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/386628/
Tom Rix [Wed, 5 Aug 2020 20:59:11 +0000 (13:59 -0700)]
drm/gma500: fix error check
Reviewing this block of code in cdv_intel_dp_init()
ret = cdv_intel_dp_aux_native_read(gma_encoder, DP_DPCD_REV, ...
cdv_intel_edp_panel_vdd_off(gma_encoder);
if (ret == 0) {
/* if this fails, presume the device is a ghost */
DRM_INFO("failed to retrieve link info, disabling eDP\n");
drm_encoder_cleanup(encoder);
cdv_intel_dp_destroy(connector);
goto err_priv;
} else {
The (ret == 0) is not strict enough.
cdv_intel_dp_aux_native_read() returns > 0 on success
otherwise it is failure.
So change to <=
Fixes:
d112a8163f83 ("gma500/cdv: Add eDP support")
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200805205911.20927-1-trix@redhat.com
Linus Walleij [Fri, 3 Jul 2020 12:59:01 +0000 (14:59 +0200)]
drm: gma500: Convert to GPIO descriptors
Finalize he conversion of GMA500 to use only GPIO descriptors.
The GPIO look-up-table is associated with the device directly
in the GMA500 Medfield chip driver since no explicit platform
type device (such as in x86/platform/intel-mid) exists: the
GMA500 probes directly from the PCI device. Apparently GPIOs
128 and 34 are used on all of these so just go ahead and
register those for resetting the DSI pipes.
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200703125901.513476-1-linus.walleij@linaro.org
Randy Dunlap [Tue, 18 Aug 2020 20:28:11 +0000 (13:28 -0700)]
drm: ast: fix double __iomem sparse warning
sparse complains about having 2 "__iomem" attributes on the same line
where only one is needed since the first one applies to everything
up to the ending ';'.
However, to make it clear(er) that both of these pointers are
"__iomem", use separate lines for them.
../drivers/gpu/drm/ast/ast_cursor.c:256:26: CK: warning: duplicate [noderef]
../drivers/gpu/drm/ast/ast_cursor.c:256:26: CK: error: multiple address space given: __iomem & __iomem
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Dave Airlie <airlied@redhat.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/a8185578-a69a-16b0-6fdf-f4e46bc4f61f@infradead.org
David Stevens [Wed, 19 Aug 2020 03:10:11 +0000 (12:10 +0900)]
virtio: fix build for configs without dma-bufs
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David Stevens <stevensd@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20200819031011.310180-1-stevensd@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Sam Ravnborg [Sat, 15 Aug 2020 12:54:06 +0000 (14:54 +0200)]
drm/panel: Use dev_ based logging
Standardize on the dev_ based logging and drop the include of drm_print.h.
Fix a few cases where "x@" was used when printing the mode.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Cc: Jerry Han <hanxu5@huaqin.corp-partner.google.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Icenowy Zheng <icenowy@aosc.io>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Guido Günther <agx@sigxcpu.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200815125406.1153224-6-sam@ravnborg.org
Sam Ravnborg [Sat, 15 Aug 2020 12:54:05 +0000 (14:54 +0200)]
drm/panel: sitronix: Use dev_ based logging
Standardize on the dev_ based logging and drop the include of drm_print.h.
Fix a few cases where "x@" was used when printing the mode.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Guido Günther <agx@sigxcpu.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200815125406.1153224-5-sam@ravnborg.org
Sam Ravnborg [Sat, 15 Aug 2020 12:54:04 +0000 (14:54 +0200)]
drm/panel: raydium: Use dev_ based logging
Standardize on the dev_ based logging and drop the include of drm_print.h.
Fix a few cases where "x@" was used when printing the mode.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Cc: Robert Chiras <robert.chiras@nxp.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Guido Günther <agx@sigxcpu.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200815125406.1153224-4-sam@ravnborg.org
Sam Ravnborg [Sat, 15 Aug 2020 12:54:03 +0000 (14:54 +0200)]
drm/panel: leadtek: Use dev_ based logging
Standardize on the dev_ based logging and drop the include of drm_print.h.
Fix a few cases where "x@" was used when printing the mode.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Guido Günther <agx@sigxcpu.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200815125406.1153224-3-sam@ravnborg.org
Sam Ravnborg [Sat, 15 Aug 2020 12:54:02 +0000 (14:54 +0200)]
drm/panel: samsung: Use dev_ based logging
Standardize on the dev_ based logging and drop the include of drm_print.h.
Fix a few cases where "x@" was used when printing the mode.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Guido Günther <agx@sigxcpu.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200815125406.1153224-2-sam@ravnborg.org
Guido Günther [Mon, 17 Aug 2020 08:14:36 +0000 (10:14 +0200)]
drm/panel: Add panel driver for the Mantix MLAF057WE51-X DSI panel
The panel uses a Focaltech FT8006p, the touch part is handled by the
already existing edt-ft5x06.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/118c6e03dd0ff6e86e495579102cbf7d0cfca6f4.1597652012.git.agx@sigxcpu.org
Guido Günther [Mon, 17 Aug 2020 08:14:35 +0000 (10:14 +0200)]
dt-bindings: Add Mantix MLAF057WE51-X panel bindings
The panel uses a Focaltech FT8006p, the touch part is handled by the
already existing edt-ft5x06.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/b84c8c00ee1dcf545903a475872e1ae62b5f43ea.1597652012.git.agx@sigxcpu.org
Guido Günther [Mon, 17 Aug 2020 08:14:34 +0000 (10:14 +0200)]
dt-bindings: vendor-prefixes: Add mantix vendor prefix
Add prefix for Mantix Display Technology Co.,Ltd.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/b6bcfe27d9393a07a5cdd82fcf211620c774a273.1597652012.git.agx@sigxcpu.org
Thomas Zimmermann [Fri, 7 Aug 2020 11:10:22 +0000 (13:10 +0200)]
drm/malidp: Use struct drm_gem_object_funcs.get_sg_table internally
The malidp driver uses GEM object functions for callbacks. Fix it to
use them internally as well.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel@ffwll.ch>
Fixes:
ecdd6474644f ("drm/malidp: Use GEM CMA object functions")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Emil Velikov <emil.velikov@collabora.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Brian Starkey <brian.starkey@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200807111022.12117-1-tzimmermann@suse.de
Maxime Ripard [Tue, 18 Aug 2020 12:14:25 +0000 (14:14 +0200)]
Merge v5.9-rc1 into drm-misc-next
Sam needs 5.9-rc1 to have dev_err_probe in to merge some patches.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Tian Tao [Tue, 11 Aug 2020 08:23:06 +0000 (16:23 +0800)]
MAINTAINERS: Change maintainer for hisilicon DRM driver
Remove Rongrong Zou and change tiantao as hisilicon DRM maintainer.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: xinliang.liu <xinliang.liu@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1597134186-58423-1-git-send-email-tiantao6@hisilicon.com
Rikard Falkeborn [Tue, 4 Aug 2020 21:53:37 +0000 (23:53 +0200)]
drm/sun4i: Constify static structs
A number of static variables are not modified and can be made const to
allow the compiler to put them in read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804215337.54594-1-rikard.falkeborn@gmail.com
David Stevens [Tue, 18 Aug 2020 07:13:43 +0000 (16:13 +0900)]
drm/virtio: Support virtgpu exported resources
Add support for UUID-based resource sharing mechanism to virtgpu. This
implements the new virtgpu commands and hooks them up to dma-buf's
get_uuid callback.
Signed-off-by: David Stevens <stevensd@chromium.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200818071343.3461203-4-stevensd@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
David Stevens [Tue, 18 Aug 2020 07:13:42 +0000 (16:13 +0900)]
virtio-gpu: add VIRTIO_GPU_F_RESOURCE_UUID feature
This feature allows the guest to request a UUID from the host for a
particular virtio_gpu resource. The UUID can then be shared with other
virtio devices, to allow the other host devices to access the
virtio_gpu's corresponding host resource.
Signed-off-by: David Stevens <stevensd@chromium.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200818071343.3461203-3-stevensd@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
David Stevens [Tue, 18 Aug 2020 07:13:41 +0000 (16:13 +0900)]
virtio: add dma-buf support for exported objects
This change adds a new flavor of dma-bufs that can be used by virtio
drivers to share exported objects. A virtio dma-buf can be queried by
virtio drivers to obtain the UUID which identifies the underlying
exported object.
Signed-off-by: David Stevens <stevensd@chromium.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200818071343.3461203-2-stevensd@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Sidong Yang [Sun, 24 May 2020 02:26:23 +0000 (11:26 +0900)]
drm/qxl: Replace deprecated function in qxl_display
Replace deprecated function drm_modeset_lock/unlock_all with
helper function DRM_MODESET_LOCK_ALL_BEGIN/END.
Signed-off-by: Sidong Yang <realwakka@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200524022624.10363-1-realwakka@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Gustavo A. R. Silva [Wed, 17 Jun 2020 21:57:07 +0000 (16:57 -0500)]
drm/virtio: Use struct_size() helper in kmalloc()
Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.
This code was detected with the help of Coccinelle and, audited and
fixed manually.
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20200617215707.GA16785@embeddedor
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Gerd Hoffmann [Fri, 7 Aug 2020 10:55:01 +0000 (12:55 +0200)]
drm/qxl: don't take vga ports on rev5+
qemu 5.0 introduces a new qxl hardware revision 5. Unlike revision 4
(and below) the device doesn't switch back into vga compatibility mode
when someone touches the vga ports. So we don't have to reserve the
vga ports any more to avoid that happening.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20200807105501.24599-1-kraxel@redhat.com
Gurchetan Singh [Mon, 15 Jun 2020 23:05:00 +0000 (16:05 -0700)]
drm/virtio: Revert "drm/virtio: Call the right shmem helpers"
This reverts commit
d323bb44e4d23802eb25d13de1f93f2335bd60d0.
Fixes a double-free regression:
[ 4.357928] drm_gem_shmem_free_object+0xb4/0x100
[ 4.358983] virtio_gpu_dequeue_ctrl_func+0xd9/0x290
[ 4.360343] process_one_work+0x1d2/0x3a0
[ 4.361581] worker_thread+0x45/0x3c0
[ 4.362645] kthread+0xf6/0x130
[ 4.363543] ? process_one_work+0x3a0/0x3a0
[ 4.364770] ? kthread_park+0x80/0x80
[ 4.365799] ret_from_fork+0x35/0x40
[ 4.367103] Modules linked in:
[ 4.367958] CR2:
0000000000000018
[ 4.368857] ---[ end trace
db84f7a2974d5c79 ]---
[ 4.370118] RIP: 0010:dma_direct_unmap_sg+0x1f/0x60
In addition, virtio has it's own set of dma-ops so there's not an
obviously clean way to transition to shmem helpers.
Fixes:
d323bb44e4d2 ("drm/virtio: Call the right shmem helpers")
Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20200615230500.551-1-gurchetansingh@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Colin Ian King [Wed, 1 Jul 2020 13:41:54 +0000 (14:41 +0100)]
drm/virtgpu: remove redundant assignments to width and height
Variables width and height are being assigned values that are never
read. The assignments are redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200701134154.549112-1-colin.king@canonical.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Linus Torvalds [Sun, 16 Aug 2020 20:04:57 +0000 (13:04 -0700)]
Linux 5.9-rc1
Linus Torvalds [Sun, 16 Aug 2020 17:55:12 +0000 (10:55 -0700)]
Merge tag 'io_uring-5.9-2020-08-15' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"A few differerent things in here.
Seems like syzbot got some more io_uring bits wired up, and we got a
handful of reports and the associated fixes are in here.
General fixes too, and a lot of them marked for stable.
Lastly, a bit of fallout from the async buffered reads, where we now
more easily trigger short reads. Some applications don't really like
that, so the io_read() code now handles short reads internally, and
got a cleanup along the way so that it's now easier to read (and
documented). We're now passing tests that failed before"
* tag 'io_uring-5.9-2020-08-15' of git://git.kernel.dk/linux-block:
io_uring: short circuit -EAGAIN for blocking read attempt
io_uring: sanitize double poll handling
io_uring: internally retry short reads
io_uring: retain iov_iter state over io_read/io_write calls
task_work: only grab task signal lock when needed
io_uring: enable lookup of links holding inflight files
io_uring: fail poll arm on queue proc failure
io_uring: hold 'ctx' reference around task_work queue + execute
fs: RWF_NOWAIT should imply IOCB_NOIO
io_uring: defer file table grabbing request cleanup for locked requests
io_uring: add missing REQ_F_COMP_LOCKED for nested requests
io_uring: fix recursive completion locking on oveflow flush
io_uring: use TWA_SIGNAL for task_work uncondtionally
io_uring: account locked memory before potential error case
io_uring: set ctx sq/cq entry count earlier
io_uring: Fix NULL pointer dereference in loop_rw_iter()
io_uring: add comments on how the async buffered read retry works
io_uring: io_async_buf_func() need not test page bit
Mike Rapoport [Sun, 16 Aug 2020 14:24:03 +0000 (17:24 +0300)]
parisc: fix PMD pages allocation by restoring pmd_alloc_one()
Commit
1355c31eeb7e ("asm-generic: pgalloc: provide generic pmd_alloc_one()
and pmd_free_one()") converted parisc to use generic version of
pmd_alloc_one() but it missed the fact that parisc uses order-1 pages for
PMD.
Restore the original version of pmd_alloc_one() for parisc, just use
GFP_PGTABLE_KERNEL that implies __GFP_ZERO instead of GFP_KERNEL and
memset.
Fixes:
1355c31eeb7e ("asm-generic: pgalloc: provide generic pmd_alloc_one() and pmd_free_one()")
Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Tested-by: Meelis Roos <mroos@linux.ee>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://lkml.kernel.org/r/9f2b5ebd-e4a4-0fa1-6cd3-4b9f6892d1ad@linux.ee
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Guido Günther [Sun, 16 Aug 2020 07:13:43 +0000 (09:13 +0200)]
dt-bindings: panel: rocktech,jh057n00900: Add myself as maintainer
I maintained the txt based bindings before yaml conversion and care
about the driver.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/9427a9c0e6aaf9fb375f7ecee6691ba491149d52.1597561897.git.agx@sigxcpu.org
Guido Günther [Sun, 16 Aug 2020 07:13:42 +0000 (09:13 +0200)]
dt-bindings: panel: rocktech,jh057n00900: Modernize
- Use common properties from panel-common.yaml
- Indent comment like content
- Don't preserve newlines in description
- Indent example by four spaces
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/60639e670028af7e8ab31379256ba331a1bdf6cc.1597561897.git.agx@sigxcpu.org
Dmitry Osipenko [Thu, 13 Aug 2020 21:56:09 +0000 (00:56 +0300)]
drm/panel-simple: Read panel orientation
The panel orientation needs to parsed from a device-tree and assigned to
the panel's connector in order to make orientation property available to
userspace. That's what this patch does for the panel-simple driver.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200813215609.28643-5-digetx@gmail.com
Dmitry Osipenko [Thu, 13 Aug 2020 21:56:08 +0000 (00:56 +0300)]
drm/panel: lvds: Read panel orientation
The panel orientation needs to parsed from a device-tree and assigned to
the panel's connector in order to make orientation property available to
userspace. That's what this patch does for the generic LVDS panel.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200813215609.28643-4-digetx@gmail.com
Derek Basehore [Thu, 13 Aug 2020 21:56:07 +0000 (00:56 +0300)]
drm/panel: Read panel orientation for BOE TV101WUM-NL6
This reads the DT setting for the panel rotation to set the panel
orientation in the get_modes callback.
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200813215609.28643-3-digetx@gmail.com
Derek Basehore [Thu, 13 Aug 2020 21:56:06 +0000 (00:56 +0300)]
drm/panel: Add helper for reading DT rotation
This adds a helper function for reading the rotation (panel
orientation) from the device tree.
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200813215609.28643-2-digetx@gmail.com
Linus Torvalds [Sun, 16 Aug 2020 03:36:42 +0000 (20:36 -0700)]
Merge tag 'block-5.9-2020-08-14' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A few fixes on the block side of things:
- Discard granularity fix (Coly)
- rnbd cleanups (Guoqing)
- md error handling fix (Dan)
- md sysfs fix (Junxiao)
- Fix flush request accounting, which caused an IO slowdown for some
configurations (Ming)
- Properly propagate loop flag for partition scanning (Lennart)"
* tag 'block-5.9-2020-08-14' of git://git.kernel.dk/linux-block:
block: fix double account of flush request's driver tag
loop: unset GENHD_FL_NO_PART_SCAN on LOOP_CONFIGURE
rnbd: no need to set bi_end_io in rnbd_bio_map_kern
rnbd: remove rnbd_dev_submit_io
md-cluster: Fix potential error pointer dereference in resize_bitmaps()
block: check queue's limits.discard_granularity in __blkdev_issue_discard()
md: get sysfs entry after redundancy attr group create
Linus Torvalds [Sun, 16 Aug 2020 01:54:42 +0000 (18:54 -0700)]
Merge tag 'riscv-for-linus-5.9-mw1' of git://git./linux/kernel/git/riscv/linux
Pull RISC-V fix from Palmer Dabbelt:
"I collected a single fix during the merge window: we managed to break
the early trap setup on !MMU, this fixes it"
* tag 'riscv-for-linus-5.9-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Setup exception vector for nommu platform
Linus Torvalds [Sun, 16 Aug 2020 01:50:32 +0000 (18:50 -0700)]
Merge tag 'sh-for-5.9' of git://git.libc.org/linux-sh
Pull arch/sh updates from Rich Felker:
"Cleanup, SECCOMP_FILTER support, message printing fixes, and other
changes to arch/sh"
* tag 'sh-for-5.9' of git://git.libc.org/linux-sh: (34 commits)
sh: landisk: Add missing initialization of sh_io_port_base
sh: bring syscall_set_return_value in line with other architectures
sh: Add SECCOMP_FILTER
sh: Rearrange blocks in entry-common.S
sh: switch to copy_thread_tls()
sh: use the generic dma coherent remap allocator
sh: don't allow non-coherent DMA for NOMMU
dma-mapping: consolidate the NO_DMA definition in kernel/dma/Kconfig
sh: unexport register_trapped_io and match_trapped_io_handler
sh: don't include <asm/io_trapped.h> in <asm/io.h>
sh: move the ioremap implementation out of line
sh: move ioremap_fixed details out of <asm/io.h>
sh: remove __KERNEL__ ifdefs from non-UAPI headers
sh: sort the selects for SUPERH alphabetically
sh: remove -Werror from Makefiles
sh: Replace HTTP links with HTTPS ones
arch/sh/configs: remove obsolete CONFIG_SOC_CAMERA*
sh: stacktrace: Remove stacktrace_ops.stack()
sh: machvec: Modernize printing of kernel messages
sh: pci: Modernize printing of kernel messages
...
Jens Axboe [Sat, 15 Aug 2020 22:58:42 +0000 (15:58 -0700)]
io_uring: short circuit -EAGAIN for blocking read attempt
One case was missed in the short IO retry handling, and that's hitting
-EAGAIN on a blocking attempt read (eg from io-wq context). This is a
problem on sockets that are marked as non-blocking when created, they
don't carry any REQ_F_NOWAIT information to help us terminate them
instead of perpetually retrying.
Fixes:
227c0c9673d8 ("io_uring: internally retry short reads")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Sat, 15 Aug 2020 18:44:50 +0000 (11:44 -0700)]
io_uring: sanitize double poll handling
There's a bit of confusion on the matching pairs of poll vs double poll,
depending on if the request is a pure poll (IORING_OP_POLL_ADD) or
poll driven retry.
Add io_poll_get_double() that returns the double poll waitqueue, if any,
and io_poll_get_single() that returns the original poll waitqueue. With
that, remove the argument to io_poll_remove_double().
Finally ensure that wait->private is cleared once the double poll handler
has run, so that remove knows it's already been seen.
Cc: stable@vger.kernel.org # v5.8
Reported-by: syzbot+7f617d4a9369028b8a2c@syzkaller.appspotmail.com
Fixes:
18bceab101ad ("io_uring: allow POLL_ADD with double poll_wait() users")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Linus Torvalds [Sat, 15 Aug 2020 18:17:15 +0000 (11:17 -0700)]
Merge tag 'perf-tools-2020-08-14' of git://git./linux/kernel/git/acme/linux
Pull more perf tools updates from Arnaldo Carvalho de Melo:
"Fixes:
- Fixes for 'perf bench numa'.
- Always memset source before memcpy in 'perf bench mem'.
- Quote CC and CXX for their arguments to fix build in environments
using those variables to pass more than just the compiler names.
- Fix module symbol processing, addressing regression detected via
"perf test".
- Allow multiple probes in record+script_probe_vfs_getname.sh 'perf
test' entry.
Improvements:
- Add script to autogenerate socket family name id->string table from
copy of kernel header, used so far in 'perf trace'.
- 'perf ftrace' improvements to provide similar options for this
utility so that one can go from 'perf record', 'perf trace', etc to
'perf ftrace' just by changing the name of the subcommand.
- Prefer new "sched:sched_waking" trace event when it exists in 'perf
sched' post processing.
- Update POWER9 metrics to utilize other metrics.
- Fall back to querying debuginfod if debuginfo not found locally.
Miscellaneous:
- Sync various kvm headers with kernel sources"
* tag 'perf-tools-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (40 commits)
perf ftrace: Make option description initials all capital letters
perf build-ids: Fall back to debuginfod query if debuginfo not found
perf bench numa: Remove dead code in parse_nodes_opt()
perf stat: Update POWER9 metrics to utilize other metrics
perf ftrace: Add change log
perf: ftrace: Add set_tracing_options() to set all trace options
perf ftrace: Add option --tid to filter by thread id
perf ftrace: Add option -D/--delay to delay tracing
perf: ftrace: Allow set graph depth by '--graph-opts'
perf ftrace: Add support for trace option tracing_thresh
perf ftrace: Add option 'verbose' to show more info for graph tracer
perf ftrace: Add support for tracing option 'irq-info'
perf ftrace: Add support for trace option funcgraph-irqs
perf ftrace: Add support for trace option sleep-time
perf ftrace: Add support for tracing option 'func_stack_trace'
perf tools: Add general function to parse sublevel options
perf ftrace: Add option '--inherit' to trace children processes
perf ftrace: Show trace column header
perf ftrace: Add option '-m/--buffer-size' to set per-cpu buffer size
perf ftrace: Factor out function write_tracing_file_int()
...
Linus Torvalds [Sat, 15 Aug 2020 17:38:03 +0000 (10:38 -0700)]
Merge tag 'x86-urgent-2020-08-15' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Misc fixes and small updates all around the place:
- Fix mitigation state sysfs output
- Fix an FPU xstate/sxave code assumption bug triggered by
Architectural LBR support
- Fix Lightning Mountain SoC TSC frequency enumeration bug
- Fix kexec debug output
- Fix kexec memory range assumption bug
- Fix a boundary condition in the crash kernel code
- Optimize porgatory.ro generation a bit
- Enable ACRN guests to use X2APIC mode
- Reduce a __text_poke() IRQs-off critical section for the benefit of
PREEMPT_RT"
* tag 'x86-urgent-2020-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/alternatives: Acquire pte lock with interrupts enabled
x86/bugs/multihit: Fix mitigation reporting when VMX is not in use
x86/fpu/xstate: Fix an xstate size check warning with architectural LBRs
x86/purgatory: Don't generate debug info for purgatory.ro
x86/tsr: Fix tsc frequency enumeration bug on Lightning Mountain SoC
kexec_file: Correctly output debugging information for the PT_LOAD ELF header
kexec: Improve & fix crash_exclude_mem_range() to handle overlapping ranges
x86/crash: Correct the address boundary of function parameters
x86/acrn: Remove redundant chars from ACRN signature
x86/acrn: Allow ACRN guest to use X2APIC mode
Linus Torvalds [Sat, 15 Aug 2020 17:36:40 +0000 (10:36 -0700)]
Merge tag 'sched-urgent-2020-08-15' of git://git./linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Two fixes: fix a new tracepoint's output value, and fix the formatting
of show-state syslog printouts"
* tag 'sched-urgent-2020-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/debug: Fix the alignment of the show-state debug output
sched: Fix use of count for nr_running tracepoint
Linus Torvalds [Sat, 15 Aug 2020 17:34:24 +0000 (10:34 -0700)]
Merge tag 'perf-urgent-2020-08-15' of git://git./linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Misc fixes, an expansion of perf syscall access to CAP_PERFMON
privileged tools, plus a RAPL HW-enablement for Intel SPR platforms"
* tag 'perf-urgent-2020-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/rapl: Add support for Intel SPR platform
perf/x86/rapl: Support multiple RAPL unit quirks
perf/x86/rapl: Fix missing psys sysfs attributes
hw_breakpoint: Remove unused __register_perf_hw_breakpoint() declaration
kprobes: Remove show_registers() function prototype
perf/core: Take over CAP_SYS_PTRACE creds to CAP_PERFMON capability
Linus Torvalds [Sat, 15 Aug 2020 17:32:18 +0000 (10:32 -0700)]
Merge tag 'locking-urgent-2020-08-15' of git://git./linux/kernel/git/tip/tip
Pull locking fixlets from Ingo Molnar:
"A documentation fix and a 'fallthrough' macro update"
* tag 'locking-urgent-2020-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Convert to use the preferred 'fallthrough' macro
Documentation/locking/locktypes: Fix a typo
Linus Torvalds [Sat, 15 Aug 2020 15:34:36 +0000 (08:34 -0700)]
Merge tag '9p-for-5.9-rc1' of git://github.com/martinetd/linux
Pull 9p updates from Dominique Martinet:
- some code cleanup
- a couple of static analysis fixes
- setattr: try to pick a fid associated with the file rather than the
dentry, which might sometimes matter
* tag '9p-for-5.9-rc1' of git://github.com/martinetd/linux:
9p: Remove unneeded cast from memory allocation
9p: remove unused code in 9p
net/9p: Fix sparse endian warning in trans_fd.c
9p: Fix memory leak in v9fs_mount
9p: retrieve fid from file when file instance exist.
Linus Torvalds [Sat, 15 Aug 2020 15:31:39 +0000 (08:31 -0700)]
Merge tag '5.9-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Three small cifs/smb3 fixes, one for stable fixing mkdir path with
the 'idsfromsid' mount option"
* tag '5.9-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
SMB3: Fix mkdir when idsfromsid configured on mount
cifs: Convert to use the fallthrough macro
cifs: Fix an error pointer dereference in cifs_mount()
Linus Torvalds [Sat, 15 Aug 2020 15:26:55 +0000 (08:26 -0700)]
Merge tag 'nfs-for-5.9-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Stable fixes:
- pNFS: Don't return layout segments that are being used for I/O
- pNFS: Don't move layout segments off the active list when being used for I/O
Features:
- NFS: Add support for user xattrs through the NFSv4.2 protocol
- NFS: Allow applications to speed up readdir+statx() using AT_STATX_DONT_SYNC
- NFSv4.0 allow nconnect for v4.0
Bugfixes and cleanups:
- nfs: ensure correct writeback errors are returned on close()
- nfs: nfs_file_write() should check for writeback errors
- nfs: Fix getxattr kernel panic and memory overflow
- NFS: Fix the pNFS/flexfiles mirrored read failover code
- SUNRPC: dont update timeout value on connection reset
- freezer: Add unsafe versions of freezable_schedule_timeout_interruptible for NFS
- sunrpc: destroy rpc_inode_cachep after unregister_filesystem"
* tag 'nfs-for-5.9-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (32 commits)
NFS: Fix flexfiles read failover
fs: nfs: delete repeated words in comments
rpc_pipefs: convert comma to semicolon
nfs: Fix getxattr kernel panic and memory overflow
NFS: Don't return layout segments that are in use
NFS: Don't move layouts to plh_return_segs list while in use
NFS: Add layout segment info to pnfs read/write/commit tracepoints
NFS: Add tracepoints for layouterror and layoutstats.
NFS: Report the stateid + status in trace_nfs4_layoutreturn_on_close()
SUNRPC dont update timeout value on connection reset
nfs: nfs_file_write() should check for writeback errors
nfs: ensure correct writeback errors are returned on close()
NFSv4.2: xattr cache: get rid of cache discard work queue
NFS: remove redundant initialization of variable result
NFSv4.0 allow nconnect for v4.0
freezer: Add unsafe versions of freezable_schedule_timeout_interruptible for NFS
sunrpc: destroy rpc_inode_cachep after unregister_filesystem
NFSv4.2: add client side xattr caching.
NFSv4.2: hook in the user extended attribute handlers
NFSv4.2: add the extended attribute proc functions.
...
Linus Torvalds [Sat, 15 Aug 2020 15:25:41 +0000 (08:25 -0700)]
Merge tag 'edac_updates_for_5.9_pt2' of git://git./linux/kernel/git/ras/ras
Pull edac fix from Tony Luck:
"Fix for the ie31200 driver that missed the first pull"
* tag 'edac_updates_for_5.9_pt2' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/ie31200: Fallback if host bridge device is already initialized
Linus Torvalds [Sat, 15 Aug 2020 15:19:58 +0000 (08:19 -0700)]
Merge tag 'devicetree-fixes-for-5.9' of git://git./linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
"Another round of 'allOf' removals and whitespace clean-ups of schemas"
* tag 'devicetree-fixes-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: Remove more cases of 'allOf' containing a '$ref'
dt-bindings: Whitespace clean-ups in schema files
Linus Torvalds [Sat, 15 Aug 2020 15:18:22 +0000 (08:18 -0700)]
Merge tag 'acpi-5.9-rc1-2' of git://git./linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"Add new hardware support to the ACPI driver for AMD SoCs, the x86 clk
driver and the Designware i2c driver (changes from Akshu Agrawal and
Pu Wen)"
* tag 'acpi-5.9-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
clk: x86: Support RV architecture
ACPI: APD: Add a fmw property is_raven
clk: x86: Change name from ST to FCH
ACPI: APD: Change name from ST to FCH
i2c: designware: Add device HID for Hygon I2C controller
Linus Torvalds [Sat, 15 Aug 2020 15:17:01 +0000 (08:17 -0700)]
Merge tag 'pm-5.9-rc1-3' of git://git./linux/kernel/git/rafael/linux-pm
Pull one more power management update from Rafael Wysocki:
"Modify the intel_pstate driver to allow it to work in the passive mode
with hardware-managed P-states (HWP) enabled"
* tag 'pm-5.9-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: intel_pstate: Implement passive mode with HWP enabled
Linus Torvalds [Sat, 15 Aug 2020 15:09:38 +0000 (08:09 -0700)]
Merge tag 'mfd-next-5.9-1' of git://git./linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"Core Frameworks
- Make better attempt at matching device with the correct OF node
- Allow batch removal of hierarchical sub-devices
New Drivers
- Add STM32 Clocksource driver
- Add support for Khadas System Control Microcontroller
Driver Removal
- Remove unused driver for TI's SMSC ECE1099
New Device Support
- Add support for Intel Emmitsburg PCH to Intel LPSS PCI
- Add support for Intel Tiger Lake PCH-H to Intel LPSS PCI
- Add support for Dialog DA revision to Dialog DA9063
New Functionality
- Add support for AXP803 to be probed by I2C
Fix-ups
- Numerous W=1 warning fixes
- Device Tree changes (stm32-lptimer, gateworks-gsc, khadas,mcu, stmfx, cros-ec, j721e-system-controller)
- Enabled Regmap 'fast I/O' in stm32-lptimer
- Change BUG_ON to WARN_ON in arizona-core
- Remove superfluous code/initialisation (madera, max14577)
- Trivial formatting/spelling issues (madera-core, madera-i2c, da9055, max77693-private)
- Switch to of_platform_populate() in sprd-sc27xx-spi
- Expand out set/get brightness/pwm macros in lm3533-ctrlbank
- Disable IRQs on suspend in motorola-cpcap
- Clean-up error handling in intel_soc_pmic_mrfld
- Ensure correct removal order of sub-devices in madera
- Many s/HTTP/HTTPS/ link changes
- Ensure name used with Regmap is unique in syscon
Bug Fixes
- Properly 'put' clock on unbind and error in arizona-core
- Fix revision handling in da9063
- Fix 'assignment of read-only location' error in kempld-core
- Avoid using the Regmap API when atomic in rn5t618
- Redefine volatile register description in rn5t618
- Use locking to protect event handler in dln2"
* tag 'mfd-next-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (76 commits)
mfd: syscon: Use a unique name with regmap_config
mfd: Replace HTTP links with HTTPS ones
mfd: dln2: Run event handler loop under spinlock
mfd: madera: Improve handling of regulator unbinding
mfd: mfd-core: Add mechanism for removal of a subset of children
mfd: intel_soc_pmic_mrfld: Simplify the return expression of intel_scu_ipc_dev_iowrite8()
mfd: max14577: Remove redundant initialization of variable current_bits
mfd: rn5t618: Fix caching of battery related registers
mfd: max77693-private: Drop a duplicated word
mfd: da9055: pdata.h: Drop a duplicated word
mfd: rn5t618: Make restart handler atomic safe
mfd: kempld-core: Fix 'assignment of read-only location' error
mfd: axp20x: Allow the AXP803 to be probed by I2C
mfd: da9063: Add support for latest DA silicon revision
mfd: da9063: Fix revision handling to correctly select reg tables
dt-bindings: mfd: st,stmfx: Remove I2C unit name
dt-bindings: mfd: ti,j721e-system-controller.yaml: Add J721e system controller
mfd: motorola-cpcap: Disable interrupt for suspend
mfd: smsc-ece1099: Remove driver
mfd: core: Add OF_MFD_CELL_REG() helper
...
Linus Torvalds [Sat, 15 Aug 2020 15:02:03 +0000 (08:02 -0700)]
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
"Subsystems affected by this patch series: mm/hotfixes, lz4, exec,
mailmap, mm/thp, autofs, sysctl, mm/kmemleak, mm/misc and lib"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (35 commits)
virtio: pci: constify ioreadX() iomem argument (as in generic implementation)
ntb: intel: constify ioreadX() iomem argument (as in generic implementation)
rtl818x: constify ioreadX() iomem argument (as in generic implementation)
iomap: constify ioreadX() iomem argument (as in generic implementation)
sh: use generic strncpy()
sh: clkfwk: remove r8/r16/r32
include/asm-generic/vmlinux.lds.h: align ro_after_init
mm: annotate a data race in page_zonenum()
mm/swap.c: annotate data races for lru_rotate_pvecs
mm/rmap: annotate a data race at tlb_flush_batched
mm/mempool: fix a data race in mempool_free()
mm/list_lru: fix a data race in list_lru_count_one
mm/memcontrol: fix a data race in scan count
mm/page_counter: fix various data races at memsw
mm/swapfile: fix and annotate various data races
mm/filemap.c: fix a data race in filemap_fault()
mm/swap_state: mark various intentional data races
mm/page_io: mark various intentional data races
mm/frontswap: mark various intentional data races
mm/kmemleak: silence KCSAN splats in checksum
...
Icenowy Zheng [Sun, 19 Jul 2020 17:10:05 +0000 (01:10 +0800)]
drm/panel: ilitek-ili9881c: add support for Feixin K101-IM2BYL02 panel
Feixin K101-IM2BYL02 is a new panel by Feixin designed as a replacement
to their K101-IM2BA02 panel. This panel utilizes the Ilitek ILI9881C
controller.
Add this panel's initialzation sequence and timing to ILI9881C driver.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200719171007.276383-2-icenowy@aosc.io
Icenowy Zheng [Sun, 19 Jul 2020 17:10:04 +0000 (01:10 +0800)]
dt-bindings: ili9881c: add compatible string for Feixin K101-IM2BYL02
Feixin K101-IM2BYL02 is a drop-in replacement of K101-IM2BA02 panel
(which is already supported by panel-feixin-k101-im2ba02 driver) with
the same pinout. It utilizes an Ilitek ILI9881C controller chip, so its
compatible string should be added to ilitek,ili9881c file.
Add the compatible string for it.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200719171007.276383-1-icenowy@aosc.io
Icenowy Zheng [Sun, 19 Jul 2020 17:04:07 +0000 (01:04 +0800)]
drm/panel: ilitek-ili9881c: prepare for adding support for extra panels
There're more panels with ILI9881C controller than the Bananapi one
supported by this driver.
Extract the mode and init sequence part, to prepare the driver for
adding new panels.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200719170411.275812-2-icenowy@aosc.io
Paul Cercueil [Tue, 11 Aug 2020 00:22:40 +0000 (02:22 +0200)]
drm/panel: simple: Add 50Hz mode for sharp,ls020b1dd01d
Add a perfect 50.00 Hz frame rate mode to the list of available modes
for the Sharp LS020B1DD01D panel.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200811002240.55194-6-paul@crapouillou.net
Paul Cercueil [Tue, 11 Aug 2020 00:22:39 +0000 (02:22 +0200)]
drm/panel: simple: Tweak timings of sharp,ls020b1dd01d for perfect 60Hz
Modify the video mode in order to obtain a perfect 60.00 Hz frame rate
using a 3 MHz pixel clock.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200811002240.55194-5-paul@crapouillou.net
Paul Cercueil [Tue, 11 Aug 2020 00:22:38 +0000 (02:22 +0200)]
drm/panel: simple: Convert sharp,ls020b1dd01d from timings to videomode
Convert the Sharp LS020B1DD01D panel entry from using a struct
display_timing to using a struct drm_display_mode, as display_timing
seems to be the old and legacy format.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200811002240.55194-4-paul@crapouillou.net
Paul Cercueil [Tue, 11 Aug 2020 00:22:37 +0000 (02:22 +0200)]
drm/panel: novatek,nt39016: Add missing CR to error messages
If you pass a string that is not terminated with a carriage return to
dev_err(), it will eventually be printed with a carriage return, but
not right away, since the kernel will wait for a pr_cont().
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200811002240.55194-3-paul@crapouillou.net
Paul Cercueil [Tue, 11 Aug 2020 00:22:36 +0000 (02:22 +0200)]
drm/panel: novatek,nt39016: Handle backlight the standard way
Instead of manipulating the backlight directly in this driver, register
it in the probe using drm_panel_of_backlight() and let the drm_panel
framework code handle it.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200811002240.55194-2-paul@crapouillou.net
Linus Walleij [Fri, 14 Aug 2020 19:44:51 +0000 (21:44 +0200)]
drm/mcde: Retry DSI read/write transactions
The vendor driver makes a few retries on read DSI
transactions, something that is needed especially in
case of read (such as reading the panel MTP ID) while
the panel is running in video mode. This happens on
the Samsung s6e63m0 panel on the Golden device.
Retry reads and writes alike three times.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
Cc: Stephan Gerhold <stephan@gerhold.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200814194451.3494294-1-linus.walleij@linaro.org
Krzysztof Kozlowski [Sat, 15 Aug 2020 00:32:20 +0000 (17:32 -0700)]
virtio: pci: constify ioreadX() iomem argument (as in generic implementation)
The ioreadX() helpers have inconsistent interface. On some architectures
void *__iomem address argument is a pointer to const, on some not.
Implementations of ioreadX() do not modify the memory under the address so
they can be converted to a "const" version for const-safety and
consistency among architectures.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Allen Hubbe <allenbh@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Jon Mason <jdmason@kudzu.us>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200709072837.5869-5-krzk@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Krzysztof Kozlowski [Sat, 15 Aug 2020 00:32:15 +0000 (17:32 -0700)]
ntb: intel: constify ioreadX() iomem argument (as in generic implementation)
The ioreadX() helpers have inconsistent interface. On some architectures
void *__iomem address argument is a pointer to const, on some not.
Implementations of ioreadX() do not modify the memory under the address so
they can be converted to a "const" version for const-safety and
consistency among architectures.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Cc: Allen Hubbe <allenbh@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Jon Mason <jdmason@kudzu.us>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200709072837.5869-4-krzk@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Krzysztof Kozlowski [Sat, 15 Aug 2020 00:32:11 +0000 (17:32 -0700)]
rtl818x: constify ioreadX() iomem argument (as in generic implementation)
The ioreadX() helpers have inconsistent interface. On some architectures
void *__iomem address argument is a pointer to const, on some not.
Implementations of ioreadX() do not modify the memory under the address so
they can be converted to a "const" version for const-safety and
consistency among architectures.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Cc: Allen Hubbe <allenbh@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Jon Mason <jdmason@kudzu.us>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200709072837.5869-3-krzk@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Krzysztof Kozlowski [Sat, 15 Aug 2020 00:32:07 +0000 (17:32 -0700)]
iomap: constify ioreadX() iomem argument (as in generic implementation)
Patch series "iomap: Constify ioreadX() iomem argument", v3.
The ioread8/16/32() and others have inconsistent interface among the
architectures: some taking address as const, some not.
It seems there is nothing really stopping all of them to take pointer to
const.
This patch (of 4):
The ioreadX() and ioreadX_rep() helpers have inconsistent interface. On
some architectures void *__iomem address argument is a pointer to const,
on some not.
Implementations of ioreadX() do not modify the memory under the address so
they can be converted to a "const" version for const-safety and
consistency among architectures.
[krzk@kernel.org: sh: clk: fix assignment from incompatible pointer type for ioreadX()]
Link: http://lkml.kernel.org/r/20200723082017.24053-1-krzk@kernel.org
[akpm@linux-foundation.org: fix drivers/mailbox/bcm-pdc-mailbox.c]
Link: http://lkml.kernel.org/r/202007132209.Rxmv4QyS%25lkp@intel.com
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Jon Mason <jdmason@kudzu.us>
Cc: Allen Hubbe <allenbh@gmail.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Link: http://lkml.kernel.org/r/20200709072837.5869-1-krzk@kernel.org
Link: http://lkml.kernel.org/r/20200709072837.5869-2-krzk@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kuninori Morimoto [Sat, 15 Aug 2020 00:32:04 +0000 (17:32 -0700)]
sh: use generic strncpy()
Current SH will get below warning at strncpy()
In file included from ${LINUX}/arch/sh/include/asm/string.h:3,
from ${LINUX}/include/linux/string.h:20,
from ${LINUX}/include/linux/bitmap.h:9,
from ${LINUX}/include/linux/nodemask.h:95,
from ${LINUX}/include/linux/mmzone.h:17,
from ${LINUX}/include/linux/gfp.h:6,
from ${LINUX}/innclude/linux/slab.h:15,
from ${LINUX}/linux/drivers/mmc/host/vub300.c:38:
${LINUX}/drivers/mmc/host/vub300.c: In function 'new_system_port_status':
${LINUX}/arch/sh/include/asm/string_32.h:51:42: warning: array subscript\
80 is above array bounds of 'char[26]' [-Warray-bounds]
: "0" (__dest), "1" (__src), "r" (__src+__n)
~~~~~^~~~
In general, strncpy() should behave like below.
char dest[10];
char *src = "12345";
strncpy(dest, src, 10);
// dest = {'1', '2', '3', '4', '5',
'\0','\0','\0','\0','\0'}
But, current SH strnpy() has 2 issues.
1st is it will access to out-of-memory (= src + 10).
2nd is it needs big fixup for it, and maintenance __asm__
code is difficult.
To solve these issues, this patch simply uses generic strncpy()
instead of architecture specific one.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alan Modra <amodra@gmail.com>
Cc: Bin Meng <bin.meng@windriver.com>
Cc: Chen Zhou <chenzhou10@huawei.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Romain Naour <romain.naour@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: https://marc.info/?l=linux-renesas-soc&m=157664657013309
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kuninori Morimoto [Sat, 15 Aug 2020 00:32:00 +0000 (17:32 -0700)]
sh: clkfwk: remove r8/r16/r32
SH will get below warning
${LINUX}/drivers/sh/clk/cpg.c: In function 'r8':
${LINUX}/drivers/sh/clk/cpg.c:41:17: warning: passing argument 1 of 'ioread8'
discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
return ioread8(addr);
^~~~
In file included from ${LINUX}/arch/sh/include/asm/io.h:21,
from ${LINUX}/include/linux/io.h:13,
from ${LINUX}/drivers/sh/clk/cpg.c:14:
${LINUX}/include/asm-generic/iomap.h:29:29: note: expected 'void *' but
argument is of type 'const void *'
extern unsigned int ioread8(void __iomem *);
^~~~~~~~~~~~~~
We don't need "const" for r8/r16/r32. And we don't need r8/r16/r32
themselvs. This patch cleanup these.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alan Modra <amodra@gmail.com>
Cc: Bin Meng <bin.meng@windriver.com>
Cc: Chen Zhou <chenzhou10@huawei.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Romain Naour <romain.naour@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
X-MARC-Message: https://marc.info/?l=linux-renesas-soc&m=
157852973916903
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Romain Naour [Sat, 15 Aug 2020 00:31:57 +0000 (17:31 -0700)]
include/asm-generic/vmlinux.lds.h: align ro_after_init
Since the patch [1], building the kernel using a toolchain built with
binutils 2.33.1 prevents booting a sh4 system under Qemu. Apply the patch
provided by Alan Modra [2] that fix alignment of rodata.
[1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=
ebd2263ba9a9124d93bbc0ece63d7e0fae89b40e
[2] https://www.sourceware.org/ml/binutils/2019-12/msg00112.html
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alan Modra <amodra@gmail.com>
Cc: Bin Meng <bin.meng@windriver.com>
Cc: Chen Zhou <chenzhou10@huawei.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Rich Felker <dalias@libc.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: <stable@vger.kernel.org>
Link: https://marc.info/?l=linux-sh&m=158429470221261
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Qian Cai [Sat, 15 Aug 2020 00:31:53 +0000 (17:31 -0700)]
mm: annotate a data race in page_zonenum()
BUG: KCSAN: data-race in page_cpupid_xchg_last / put_page
write (marked) to 0xfffffc0d48ec1a00 of 8 bytes by task 91442 on cpu 3:
page_cpupid_xchg_last+0x51/0x80
page_cpupid_xchg_last at mm/mmzone.c:109 (discriminator 11)
wp_page_reuse+0x3e/0xc0
wp_page_reuse at mm/memory.c:2453
do_wp_page+0x472/0x7b0
do_wp_page at mm/memory.c:2798
__handle_mm_fault+0xcb0/0xd00
handle_pte_fault at mm/memory.c:4049
(inlined by) __handle_mm_fault at mm/memory.c:4163
handle_mm_fault+0xfc/0x2f0
handle_mm_fault at mm/memory.c:4200
do_page_fault+0x263/0x6f9
do_user_addr_fault at arch/x86/mm/fault.c:1465
(inlined by) do_page_fault at arch/x86/mm/fault.c:1539
page_fault+0x34/0x40
read to 0xfffffc0d48ec1a00 of 8 bytes by task 94817 on cpu 69:
put_page+0x15a/0x1f0
page_zonenum at include/linux/mm.h:923
(inlined by) is_zone_device_page at include/linux/mm.h:929
(inlined by) page_is_devmap_managed at include/linux/mm.h:948
(inlined by) put_page at include/linux/mm.h:1023
wp_page_copy+0x571/0x930
wp_page_copy at mm/memory.c:2615
do_wp_page+0x107/0x7b0
__handle_mm_fault+0xcb0/0xd00
handle_mm_fault+0xfc/0x2f0
do_page_fault+0x263/0x6f9
page_fault+0x34/0x40
Reported by Kernel Concurrency Sanitizer on:
CPU: 69 PID: 94817 Comm: systemd-udevd Tainted: G W O L 5.5.0-next-
20200204+ #6
Hardware name: HPE ProLiant DL385 Gen10/ProLiant DL385 Gen10, BIOS A40 07/10/2019
A page never changes its zone number. The zone number happens to be
stored in the same word as other bits which are modified, but the zone
number bits will never be modified by any other write, so it can accept
a reload of the zone bits after an intervening write and it don't need
to use READ_ONCE(). Thus, annotate this data race using
ASSERT_EXCLUSIVE_BITS() to also assert that there are no concurrent
writes to it.
Suggested-by: Marco Elver <elver@google.com>
Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Link: http://lkml.kernel.org/r/1581619089-14472-1-git-send-email-cai@lca.pw
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Qian Cai [Sat, 15 Aug 2020 00:31:50 +0000 (17:31 -0700)]
mm/swap.c: annotate data races for lru_rotate_pvecs
Read to lru_add_pvec->nr could be interrupted and then write to the same
variable. The write has local interrupt disabled, but the plain reads
result in data races. However, it is unlikely the compilers could do much
damage here given that lru_add_pvec->nr is a "unsigned char" and there is
an existing compiler barrier. Thus, annotate the reads using the
data_race() macro. The data races were reported by KCSAN,
BUG: KCSAN: data-race in lru_add_drain_cpu / rotate_reclaimable_page
write to 0xffff9291ebcb8a40 of 1 bytes by interrupt on cpu 23:
rotate_reclaimable_page+0x2df/0x490
pagevec_add at include/linux/pagevec.h:81
(inlined by) rotate_reclaimable_page at mm/swap.c:259
end_page_writeback+0x1b5/0x2b0
end_swap_bio_write+0x1d0/0x280
bio_endio+0x297/0x560
dec_pending+0x218/0x430 [dm_mod]
clone_endio+0xe4/0x2c0 [dm_mod]
bio_endio+0x297/0x560
blk_update_request+0x201/0x920
scsi_end_request+0x6b/0x4a0
scsi_io_completion+0xb7/0x7e0
scsi_finish_command+0x1ed/0x2a0
scsi_softirq_done+0x1c9/0x1d0
blk_done_softirq+0x181/0x1d0
__do_softirq+0xd9/0x57c
irq_exit+0xa2/0xc0
do_IRQ+0x8b/0x190
ret_from_intr+0x0/0x42
delay_tsc+0x46/0x80
__const_udelay+0x3c/0x40
__udelay+0x10/0x20
kcsan_setup_watchpoint+0x202/0x3a0
__tsan_read1+0xc2/0x100
lru_add_drain_cpu+0xb8/0x3f0
lru_add_drain+0x25/0x40
shrink_active_list+0xe1/0xc80
shrink_lruvec+0x766/0xb70
shrink_node+0x2d6/0xca0
do_try_to_free_pages+0x1f7/0x9a0
try_to_free_pages+0x252/0x5b0
__alloc_pages_slowpath+0x458/0x1290
__alloc_pages_nodemask+0x3bb/0x450
alloc_pages_vma+0x8a/0x2c0
do_anonymous_page+0x16e/0x6f0
__handle_mm_fault+0xcd5/0xd40
handle_mm_fault+0xfc/0x2f0
do_page_fault+0x263/0x6f9
page_fault+0x34/0x40
read to 0xffff9291ebcb8a40 of 1 bytes by task 37761 on cpu 23:
lru_add_drain_cpu+0xb8/0x3f0
lru_add_drain_cpu at mm/swap.c:602
lru_add_drain+0x25/0x40
shrink_active_list+0xe1/0xc80
shrink_lruvec+0x766/0xb70
shrink_node+0x2d6/0xca0
do_try_to_free_pages+0x1f7/0x9a0
try_to_free_pages+0x252/0x5b0
__alloc_pages_slowpath+0x458/0x1290
__alloc_pages_nodemask+0x3bb/0x450
alloc_pages_vma+0x8a/0x2c0
do_anonymous_page+0x16e/0x6f0
__handle_mm_fault+0xcd5/0xd40
handle_mm_fault+0xfc/0x2f0
do_page_fault+0x263/0x6f9
page_fault+0x34/0x40
2 locks held by oom02/37761:
#0:
ffff9281e5928808 (&mm->mmap_sem#2){++++}, at: do_page_fault
#1:
ffffffffb3ade380 (fs_reclaim){+.+.}, at: fs_reclaim_acquire.part
irq event stamp: 1949217
trace_hardirqs_on_thunk+0x1a/0x1c
__do_softirq+0x2e7/0x57c
__do_softirq+0x34c/0x57c
irq_exit+0xa2/0xc0
Reported by Kernel Concurrency Sanitizer on:
CPU: 23 PID: 37761 Comm: oom02 Not tainted 5.6.0-rc3-next-
20200226+ #6
Hardware name: HP ProLiant BL660c Gen9, BIOS I38 10/17/2018
Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Marco Elver <elver@google.com>
Link: http://lkml.kernel.org/r/20200228044018.1263-1-cai@lca.pw
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Qian Cai [Sat, 15 Aug 2020 00:31:47 +0000 (17:31 -0700)]
mm/rmap: annotate a data race at tlb_flush_batched
mm->tlb_flush_batched could be accessed concurrently as noticed by
KCSAN,
BUG: KCSAN: data-race in flush_tlb_batched_pending / try_to_unmap_one
write to 0xffff93f754880bd0 of 1 bytes by task 822 on cpu 6:
try_to_unmap_one+0x59a/0x1ab0
set_tlb_ubc_flush_pending at mm/rmap.c:635
(inlined by) try_to_unmap_one at mm/rmap.c:1538
rmap_walk_anon+0x296/0x650
rmap_walk+0xdf/0x100
try_to_unmap+0x18a/0x2f0
shrink_page_list+0xef6/0x2870
shrink_inactive_list+0x316/0x880
shrink_lruvec+0x8dc/0x1380
shrink_node+0x317/0xd80
balance_pgdat+0x652/0xd90
kswapd+0x396/0x8d0
kthread+0x1e0/0x200
ret_from_fork+0x27/0x50
read to 0xffff93f754880bd0 of 1 bytes by task 6364 on cpu 4:
flush_tlb_batched_pending+0x29/0x90
flush_tlb_batched_pending at mm/rmap.c:682
change_p4d_range+0x5dd/0x1030
change_pte_range at mm/mprotect.c:44
(inlined by) change_pmd_range at mm/mprotect.c:212
(inlined by) change_pud_range at mm/mprotect.c:240
(inlined by) change_p4d_range at mm/mprotect.c:260
change_protection+0x222/0x310
change_prot_numa+0x3e/0x60
task_numa_work+0x219/0x350
task_work_run+0xed/0x140
prepare_exit_to_usermode+0x2cc/0x2e0
ret_from_intr+0x32/0x42
Reported by Kernel Concurrency Sanitizer on:
CPU: 4 PID: 6364 Comm: mtest01 Tainted: G W L 5.5.0-next-
20200210+ #5
Hardware name: HPE ProLiant DL385 Gen10/ProLiant DL385 Gen10, BIOS A40 07/10/2019
flush_tlb_batched_pending() is under PTL but the write is not, but
mm->tlb_flush_batched is only a bool type, so the value is unlikely to be
shattered. Thus, mark it as an intentional data race by using the data
race macro.
Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Marco Elver <elver@google.com>
Link: http://lkml.kernel.org/r/1581450783-8262-1-git-send-email-cai@lca.pw
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
projects / platform / kernel / linux-starfive.git / log