platform/kernel/linux-starfive.git
7 years agoStaging: speakup: Remove print following unsuccessful kmalloc
Meghana Madhyastha [Sat, 16 Sep 2017 05:04:05 +0000 (10:34 +0530)]
Staging: speakup: Remove print following unsuccessful kmalloc

Remove print statement following unsuccessful kmalloc when there
is not enough memory. Kmalloc and variants normally produce a
backtrace in such a case. Hence, a print statement is not necessary.

Found using the following Coccinelle semantic patch:

@@
identifier i;
@@

i = (\(kmalloc\|devm_kzalloc\|kmalloc_array\|
devm_ioremap\|usb_alloc_urb\|alloc_netdev\|dev_alloc_skb\|
kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
   kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...));
(
if (i == NULL)
{
-\(DBG_8723A\|printk\|pr_err\|CERROR\|DBG_88E\)(...);
...when any
}
|
if (!i)
{
-\(DBG_8723A\|printk\|pr_err\|CERROR\|DBG_88E\)(...);
...when any
}
)

@@
identifier i;
@@
(
- if (i == NULL) {
+ if (i == NULL)
       return ...;
- }
|
- if (!i) {
+ if (!i)
       return ...;
- }
)

Signed-off-by: Meghana Madhyastha <meghana.madhyastha@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: dgnc: Remove unused fields in struct channel_t
Srishti Sharma [Sat, 16 Sep 2017 16:39:29 +0000 (22:09 +0530)]
Staging: dgnc: Remove unused fields in struct channel_t

Eliminate the fields that are not used and the comments
associated with them.

Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: dgnc: Remove unused fields in struct dgnc_board
Srishti Sharma [Sat, 16 Sep 2017 16:38:54 +0000 (22:08 +0530)]
Staging: dgnc: Remove unused fields in struct dgnc_board

Remove unused fields and comments associated with them in
the structure definition.

Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: dgnc: remove variable rc
Aastha Gupta [Sat, 16 Sep 2017 13:59:33 +0000 (19:29 +0530)]
staging: dgnc: remove variable rc

Found using coccinelle script:
@@
local idexpression ret;
expression e;
@@

-ret =
+return
     e;
-return ret;

Signed-off-by: Aastha Gupta <aastha.gupta4104@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: dgnc: remove unused variable
Aastha Gupta [Sat, 16 Sep 2017 13:02:32 +0000 (18:32 +0530)]
staging: dgnc: remove unused variable

This patch removes unused variable.

Signed-off-by: Aastha Gupta <aastha.gupta4104@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: lustre: lnet: Replace list_for_each with list_for_each_entry
Haneen Mohammed [Sat, 16 Sep 2017 00:41:48 +0000 (18:41 -0600)]
staging: lustre: lnet: Replace list_for_each with list_for_each_entry

Replace use of the combination of list_for_each and list_entry
with list_for_each_entry to simplify the code and remove variables
that are used only in list_for_each.
Issue found and corrected using Coccinelle script:

@r@
expression head, member, e;
type T1, T2, T3;
iterator name list_for_each, list_for_each_entry;
identifier pos, var;
@@

-T1 *pos;
...when!=pos=e;

-list_for_each(pos, head)
+list_for_each_entry(var, head, member)
{
...when!=pos=e;
   when!=T3 *var;
-var = list_entry(pos, T2, member);
...when!=pos=e;
}
...when!=pos=e;

Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoMerge branch 'staging_typec_move' into staging-next
Greg Kroah-Hartman [Mon, 18 Sep 2017 09:00:16 +0000 (11:00 +0200)]
Merge branch 'staging_typec_move' into staging-next

Move the typec code out of staging into the USB tree.  This is on a
separate branch so that we can share it with the USB git tree and not
cause merge issues later on.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: typec: fusb302: Move out of staging
Guenter Roeck [Tue, 12 Sep 2017 03:32:08 +0000 (20:32 -0700)]
usb: typec: fusb302: Move out of staging

The driver is in good enough shape to be moved out of staging.
Do it.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agotypec: tcpm: Move out of staging
Guenter Roeck [Tue, 12 Sep 2017 03:32:07 +0000 (20:32 -0700)]
typec: tcpm: Move out of staging

Move tcpm (USB Type-C Port Manager) out of staging.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: typec: pd: Document struct pd_message
Guenter Roeck [Tue, 12 Sep 2017 03:32:06 +0000 (20:32 -0700)]
staging: typec: pd: Document struct pd_message

struct pd_message is the format of a PD message as seen on the wire.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: typec: tcpm: Document data structures
Guenter Roeck [Tue, 12 Sep 2017 03:32:05 +0000 (20:32 -0700)]
staging: typec: tcpm: Document data structures

Document struct tcpc_config and struct tcpc_dev.
Drop unused TCPC_USB_SWITCH_RESTORE.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: typec: tcpm: Drop commented out code
Guenter Roeck [Tue, 12 Sep 2017 03:32:04 +0000 (20:32 -0700)]
staging: typec: tcpm: Drop commented out code

Commented out code can be added as needed. Drop it.
Also drop TODO and an obsolete XXX comment.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: wlan-ng: Avoid bogus endianness
Aviya Erenfeld [Mon, 11 Sep 2017 22:51:10 +0000 (01:51 +0300)]
staging: wlan-ng: Avoid bogus endianness

The linkstatus variable in the info struct received as __le16
but handled in every other place in the driver as u16

Fix that and remove the sparse warning that occurred due to it:
prism2sta.c:1450:29: warning: incorrect type in assignment (different base types)
prism2sta.c:1450:29:    expected unsigned short [unsigned] [usertype] link_status_new
prism2sta.c:1450:29:    got restricted __le16 [usertype] linkstatus

Signed-off-by: Aviya Erenfeld <aviyae42@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging:r8192u: replace request_module with try_then_request_module
Ivan Safonov [Sun, 10 Sep 2017 18:34:28 +0000 (21:34 +0300)]
staging:r8192u: replace request_module with try_then_request_module

Return value of request_module() does not handled,
so it is possible to use shorter try_then_request_module().

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8712: Fix unbalanced braces around else statement
Liam Ryan [Tue, 12 Sep 2017 00:40:15 +0000 (01:40 +0100)]
staging: rtl8712: Fix unbalanced braces around else statement

Fix checkpath-reported unbalanced braces in the following areas

221: FILE: drivers/staging/rtl8712/hal_init.c:221:
392: FILE: drivers/staging/rtl8712/os_intfs.c:392:
363: FILE: drivers/staging/rtl8712/rtl8712_cmd.c:363:
889: FILE: drivers/staging/rtl8712/rtl8712_recv.c:889:
902: FILE: drivers/staging/rtl8712/rtl871x_cmd.c:902:
84: FILE: drivers/staging/rtl8712/rtl871x_ioctl_set.c:84:
580: FILE: drivers/staging/rtl8712/rtl871x_mlme.c:580:
593: FILE: drivers/staging/rtl8712/usb_intf.c:593:

Signed-off-by: Liam Ryan <liamryandev@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: ccree: Remove unused variable monitor_lock
Srishti Sharma [Mon, 11 Sep 2017 16:28:37 +0000 (21:58 +0530)]
Staging: ccree: Remove unused variable monitor_lock

Remove the variable monitor_lock as it is not used anywhere.

Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: Change coding style to (foo *bar)
Harsha Sharma [Mon, 11 Sep 2017 17:39:51 +0000 (23:09 +0530)]
staging: rtl8723bs: Change coding style to (foo *bar)

This coding style (foo *bar) is more common for the kernel code.
Change foo* bar to foo *bar.
Change foo * bar to foo *bar.
Change (foo*) to (foo *).

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: rtlwifi: Remove unnecessary 'out of memory' message.
Shreeya Patel [Mon, 11 Sep 2017 17:51:06 +0000 (23:21 +0530)]
Staging: rtlwifi: Remove unnecessary 'out of memory' message.

Logging messages that show some type of "out of memory" error
are generally unnecessary as there is a generic message and
a stack dump done by the memory subsystem.

These messages generally increase kernel size without much
added value.

Problem found by checkpatch.

Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: Remove unnecessary spaces
Harsha Sharma [Tue, 12 Sep 2017 13:12:06 +0000 (18:42 +0530)]
staging: rtl8723bs: Remove unnecessary spaces

Space between function name and open parentheses '(' is prohibited.
Space is required around most binary operators '=', '==', '+=',
'<', ':', '+', '-'
Space required before '&', '*'
Space is required after ',', ';'

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: Replace printk() with dev_dbg()
Haneen Mohammed [Tue, 12 Sep 2017 19:04:50 +0000 (13:04 -0600)]
staging: pi433: Replace printk() with dev_dbg()

This patch convert printk() to the preferred variant dev_dbg() and
remove unnecessary comment line.
Issue detected with checkpatch.pl.

Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: Remove unnecessary blank lines
Harsha Sharma [Sun, 10 Sep 2017 17:41:14 +0000 (23:11 +0530)]
staging: rtl8723bs: Remove unnecessary blank lines

Blank lines aren't necessary after an open brace and before a close brace

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: Remove unneccesary braces and change position of open brace
Harsha Sharma [Sun, 10 Sep 2017 17:39:10 +0000 (23:09 +0530)]
staging: rtl8723bs: Remove unneccesary braces and change position of open brace

Follow linux-kernel code style for conditional statements

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: Add space between concatenated strings
Harsha Sharma [Sun, 10 Sep 2017 17:29:50 +0000 (22:59 +0530)]
staging: rtl8723bs: Add space between concatenated strings

Use spaces between concatenated strings

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: Remove unnecessary spaces at the start of line
Harsha Sharma [Sun, 10 Sep 2017 17:23:22 +0000 (22:53 +0530)]
staging: rtl8723bs: Remove unnecessary spaces at the start of line

No spaces at the start of a line

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: Add spaces around '?', '==', '||', '!='
Harsha Sharma [Sun, 10 Sep 2017 17:21:01 +0000 (22:51 +0530)]
staging: rtl8723bs: Add spaces around '?', '==', '||', '!='

Use spaces around most binary operators

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: Add spaces around '+', '|', '*'
Harsha Sharma [Sun, 10 Sep 2017 15:17:05 +0000 (20:47 +0530)]
staging: rtl8723bs: Add spaces around '+', '|', '*'

Use one space around most binary operators

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: Add spaces around '='
Harsha Sharma [Sun, 10 Sep 2017 15:15:28 +0000 (20:45 +0530)]
staging: rtl8723bs: Add spaces around '='

Use one space around (on each side of) '=' operator

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: Fixes minor typo errors
Harsha Sharma [Fri, 8 Sep 2017 14:24:28 +0000 (19:54 +0530)]
staging: pi433: Fixes minor typo errors

Fixes checkpatch warning -- "occured" and "succesfully" are misspelled

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: speakup: Replace symbolic permission
Meghana Madhyastha [Sun, 10 Sep 2017 15:32:17 +0000 (21:02 +0530)]
Staging: speakup: Replace symbolic permission

Replace S_IRUGO by 0444 in module parameter declaration. 0444 is more
readable and matches the style used in other declarations nearby.

Problem found using checkpatch.

Signed-off-by: Meghana Madhyastha <meghana.madhyastha@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: Do not initialise statics to 0
Harsha Sharma [Sat, 9 Sep 2017 15:01:21 +0000 (20:31 +0530)]
staging: rtl8723bs: Do not initialise statics to 0

Static variables are initialised to 0 by gcc

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: Remove unnecessary rtw_z?malloc casts
Joe Perches [Sat, 9 Sep 2017 20:14:54 +0000 (13:14 -0700)]
staging: rtl8723bs: Remove unnecessary rtw_z?malloc casts

These functions now return void * and no longer need casts.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: convert private allocation functions to return void *
Joe Perches [Sat, 9 Sep 2017 20:14:52 +0000 (13:14 -0700)]
staging: rtl8723bs: convert private allocation functions to return void *

Using char * for a return from allocation functions means the
code has to cast generic allocations to specific types.

Allow the compiler to not need casts on the allocations.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8723bs: Convert LIST_CONTAINOR to use kernel container_of
Joe Perches [Sat, 9 Sep 2017 20:14:51 +0000 (13:14 -0700)]
staging: rtl8723bs: Convert LIST_CONTAINOR to use kernel container_of

These are similar macros so use the normal kernel one.

As well, there are odd games being played with casting a plist to
a union recv_frame by using LIST_CONTAINOR.  Just use a direct cast
to union recv_frame instead.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: rtl8712: Remove multiple blank lines
Srishti Sharma [Mon, 11 Sep 2017 13:09:18 +0000 (18:39 +0530)]
Staging: rtl8712: Remove multiple blank lines

Remove extra blank line.

Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: xgifb: XGI_main_26.c: Fix alignment to match parentheses
Srishti Sharma [Sun, 10 Sep 2017 11:23:09 +0000 (16:53 +0530)]
Staging: xgifb: XGI_main_26.c: Fix alignment to match parentheses

Fix alignment so that it matches open parentheses.

Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: sm750fb: Remove extra blank lines
Harsha Sharma [Sat, 9 Sep 2017 10:34:47 +0000 (16:04 +0530)]
staging: sm750fb: Remove extra blank lines

This was reported by checkpatch.pl

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: vc04_services: bcm2835-camera: Fix spelling mistake
Meghana Madhyastha [Sun, 10 Sep 2017 04:27:32 +0000 (09:57 +0530)]
Staging: vc04_services: bcm2835-camera: Fix spelling mistake

Fixes a spelling mistake in the comments.
Problem found using checkpatch.

Signed-off-by: Meghana Madhyastha <meghana.madhyastha@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtlwifi: remove unused functions
Tobin C. Harding [Tue, 5 Sep 2017 06:53:44 +0000 (16:53 +1000)]
staging: rtlwifi: remove unused functions

Functions rtl_rfreg_delay() and rtl_bb_delay() are unused within the
driver. Both functions call rtl_addr_delay(), this function is unused
outside of these call sites.The driver (and kernel) code base is cleaner
if unused functions are removed.

Remove unused functions.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtlwifi: use kcalloc instead of multiply
Tobin C. Harding [Tue, 5 Sep 2017 06:53:43 +0000 (16:53 +1000)]
staging: rtlwifi: use kcalloc instead of multiply

checkpatch emits multiple warnings of type

WARNING:ALLOC_WITH_MULTIPLY: Prefer kcalloc over kzalloc with multiply

Replace two calls to kzalloc() with calls to kcalloc().

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: ccree: Merge assignment with return
Srishti Sharma [Sat, 9 Sep 2017 07:48:51 +0000 (13:18 +0530)]
Staging: ccree: Merge assignment with return

Merge the assignment and the return statements to return the value
directly. Done using coccinelle.

@@
local idexpression ret;
expression e;
@@

-ret =
+return
     e;
-return ret;

Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: remove BUG macro usage
Gilad Ben-Yossef [Thu, 7 Sep 2017 09:00:16 +0000 (12:00 +0300)]
staging: ccree: remove BUG macro usage

Replace BUG() macro usage that crash the kernel with alternatives
that signal error and/or try to recover.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: replace noop macro with inline
Gilad Ben-Yossef [Thu, 7 Sep 2017 09:00:15 +0000 (12:00 +0300)]
staging: ccree: replace noop macro with inline

Replace noop macro with a noop inline function

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: move over to BIT macro for bit defines
Gilad Ben-Yossef [Thu, 7 Sep 2017 09:00:14 +0000 (12:00 +0300)]
staging: ccree: move over to BIT macro for bit defines

Use BIT macro for bit definitions where needed.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: remove unused completion
Gilad Ben-Yossef [Thu, 7 Sep 2017 09:00:13 +0000 (12:00 +0300)]
staging: ccree: remove unused completion

icache_setup_completion is no longer used. Remove it.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: simplify resource release on error
Gilad Ben-Yossef [Thu, 7 Sep 2017 09:00:12 +0000 (12:00 +0300)]
staging: ccree: simplify resource release on error

The resource release on probe/init error was being handled
in an awkward manner and possibly leaking memory on certain
(unlikely) error path.

Fix it by simplifying the error resource release and making
it easier to track.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: Use platform_get_irq and devm_request_irq
Suniel Mahesh [Thu, 7 Sep 2017 09:00:11 +0000 (12:00 +0300)]
staging: ccree: Use platform_get_irq and devm_request_irq

It is recommended to use managed function devm_request_irq(),
which simplifies driver cleanup paths and driver code.
This patch does the following:
(a) replace platform_get_resource(), request_irq() and corresponding
error handling with platform_get_irq() and devm_request_irq().
(b) remove struct resource pointer(res_irq) in struct ssi_drvdata as
it seems redundant.
(c) change type of member irq in struct ssi_drvdata from unsigned int
to int, as return type of platform_get_irq is int and can be used in
error handling.
(d) remove irq_registered variable from driver probe as it seems
redundant.
(e) free_irq is not required any more, devm_request_irq() free's it
on driver detach.
(f) adjust log messages accordingly and remove any blank lines.

Signed-off-by: Suniel Mahesh <sunil.m@techveda.org>
Acked-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: Convert to devm_ioremap_resource for map, unmap
Suniel Mahesh [Thu, 7 Sep 2017 09:00:10 +0000 (12:00 +0300)]
staging: ccree: Convert to devm_ioremap_resource for map, unmap

It is recommended to use managed function devm_ioremap_resource(),
which simplifies driver cleanup paths and driver code.
This patch does the following:
(a) replace request_mem_region(), ioremap() and corresponding error
handling with devm_ioremap_resource().
(b) remove struct resource pointer(res_mem) in struct ssi_drvdata as it
seems redundant, use struct resource pointer which is defined locally and
adjust return value of platform_get_resource() accordingly.
(c) release_mem_region() and iounmap() are dropped, since devm_ioremap_
resource() releases and unmaps mem region on driver detach.
(d) adjust log messages accordingly and remove any blank lines.

Signed-off-by: Suniel Mahesh <sunil.m@techveda.org>
[gby: rebase on top of latest coding style fixes changes]
Acked-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: Replace kzalloc with devm_kzalloc
Suniel Mahesh [Thu, 7 Sep 2017 09:00:09 +0000 (12:00 +0300)]
staging: ccree: Replace kzalloc with devm_kzalloc

It is recommended to use managed function devm_kzalloc, which
simplifies driver cleanup paths and driver code.
This patch does the following:
(a) replace kzalloc with devm_kzalloc.
(b) drop kfree(), because memory allocated with devm_kzalloc() is
automatically freed on driver detach, otherwise it leads to a double
free.
(c) remove unnecessary blank lines.

Signed-off-by: Suniel Mahesh <sunil.m@techveda.org>
[gby: rebase on top of latest coding style fixes changes]
Acked-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: ccree: Remove unused variable.
Srishti Sharma [Thu, 7 Sep 2017 07:49:21 +0000 (13:19 +0530)]
Staging: ccree: Remove unused variable.

Remove the local variable inflight_counter as it is never used.

Signed-off-by: Srishti Sharma <srishtishar@gmail.com>
Acked-by: Gilad Ben-Yossef <gilad@benyossef.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging/speakup: fix checkpatch.pl warning in speak_char()
Justin Skists [Wed, 6 Sep 2017 12:14:25 +0000 (13:14 +0100)]
staging/speakup: fix checkpatch.pl warning in speak_char()

correct the following warning from checkpatch.pl:-

WARNING: Prefer using '"%s...", __func__' to using 'speak_char', this
function's name, in a string

Signed-off-by: Justin Skists <j.skists@gmail.com>
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging:rtl8188eu:core Fix code Indent
Janani Sankara Babu [Tue, 5 Sep 2017 12:52:20 +0000 (18:22 +0530)]
staging:rtl8188eu:core Fix code Indent

This patch is created to solve the code indentation issue

Signed-off-by: Janani Sankara Babu <jananis37@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging:rtl8188eu Remove unneccessary parenthesis
Janani Sankara Babu [Tue, 5 Sep 2017 12:35:20 +0000 (18:05 +0530)]
staging:rtl8188eu Remove unneccessary parenthesis

This patch is creates in order to correct the coding style issues. It
removes the unwanted parenthesis from the code.

Signed-off-by: Janani Sankara Babu <jananis37@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging:rtl8188eu Fix coding style issues
Janani Sankara Babu [Tue, 5 Sep 2017 10:36:36 +0000 (16:06 +0530)]
staging:rtl8188eu Fix coding style issues

This patch aims to solve coding style issues by placing constants on the
right side of the test

Signed-off-by: Janani Sankara Babu <jananis37@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging:rtl8188eu Fix use __func__ for function name
Janani Sankara Babu [Tue, 5 Sep 2017 10:25:21 +0000 (15:55 +0530)]
staging:rtl8188eu Fix use __func__ for function name

This patch fixes the WARNING: Prefer using '"%s...", __func__' to using
this function's name, in a string

Signed-off-by: Janani Sankara Babu <jananis37@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rts5208: fix gcc-8 logic error warning
Arnd Bergmann [Tue, 5 Sep 2017 07:33:32 +0000 (09:33 +0200)]
staging: rts5208: fix gcc-8 logic error warning

As gcc-8 points out, the bit mask check makes no sense here:

drivers/staging/rts5208/sd.c: In function 'ext_sd_send_cmd_get_rsp':
drivers/staging/rts5208/sd.c:4130:25: error: bitwise comparison always evaluates to true [-Werror=tautological-compare]

However, the code is even more bogus, as we have already
checked for the SD_RSP_TYPE_R0 case earlier in the function
and returned success. As seen in the mmc/sd driver core,
SD_RSP_TYPE_R0 means "no response" anyway, so checking for
a particular response would not help either.

This just removes the nonsensical code to get rid of the
warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtlwifi: fix parenthesis alignment
Tobin C. Harding [Tue, 5 Sep 2017 06:53:42 +0000 (16:53 +1000)]
staging: rtlwifi: fix parenthesis alignment

Checkpatch emits multiple warnings of type

CHECK:PARENTHESIS_ALIGNMENT: Alignment should match open parenthesis

Fix parenthesis alignment in line with checkpatch suggestion.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoLinux 4.14-rc1
Linus Torvalds [Sat, 16 Sep 2017 22:47:51 +0000 (15:47 -0700)]
Linux 4.14-rc1

7 years agoMerge tag 'upstream-4.14-rc1' of git://git.infradead.org/linux-ubifs
Linus Torvalds [Sat, 16 Sep 2017 19:08:10 +0000 (12:08 -0700)]
Merge tag 'upstream-4.14-rc1' of git://git.infradead.org/linux-ubifs

Pull UBI updates from Richard Weinberger:
 "Minor improvements"

* tag 'upstream-4.14-rc1' of git://git.infradead.org/linux-ubifs:
  UBI: Fix two typos in comments
  ubi: fastmap: fix spelling mistake: "invalidiate" -> "invalidate"
  ubi: pr_err() strings should end with newlines
  ubi: pr_err() strings should end with newlines
  ubi: pr_err() strings should end with newlines

7 years agoMerge branch 'for-linus-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 16 Sep 2017 19:03:25 +0000 (12:03 -0700)]
Merge branch 'for-linus-4.14-rc1' of git://git./linux/kernel/git/rw/uml

Pull UML updates from Richard Weinberger:

 - minor improvements

 - fixes for Debian's new gcc defaults (pie enabled by default)

 - fixes for XSTATE/XSAVE to make UML work again on modern systems

* 'for-linus-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: return negative in tuntap_open_tramp()
  um: remove a stray tab
  um: Use relative modversions with LD_SCRIPT_DYN
  um: link vmlinux with -no-pie
  um: Fix CONFIG_GCOV for modules.
  Fix minor typos and grammar in UML start_up help
  um: defconfig: Cleanup from old Kconfig options
  um: Fix FP register size for XSTATE/XSAVE

7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sat, 16 Sep 2017 18:28:59 +0000 (11:28 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix hotplug deadlock in hv_netvsc, from Stephen Hemminger.

 2) Fix double-free in rmnet driver, from Dan Carpenter.

 3) INET connection socket layer can double put request sockets, fix
    from Eric Dumazet.

 4) Don't match collect metadata-mode tunnels if the device is down,
    from Haishuang Yan.

 5) Do not perform TSO6/GSO on ipv6 packets with extensions headers in
    be2net driver, from Suresh Reddy.

 6) Fix scaling error in gen_estimator, from Eric Dumazet.

 7) Fix 64-bit statistics deadlock in systemport driver, from Florian
    Fainelli.

 8) Fix use-after-free in sctp_sock_dump, from Xin Long.

 9) Reject invalid BPF_END instructions in verifier, from Edward Cree.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits)
  mlxsw: spectrum_router: Only handle IPv4 and IPv6 events
  Documentation: link in networking docs
  tcp: fix data delivery rate
  bpf/verifier: reject BPF_ALU64|BPF_END
  sctp: do not mark sk dumped when inet_sctp_diag_fill returns err
  sctp: fix an use-after-free issue in sctp_sock_dump
  netvsc: increase default receive buffer size
  tcp: update skb->skb_mstamp more carefully
  net: ipv4: fix l3slave check for index returned in IP_PKTINFO
  net: smsc911x: Quieten netif during suspend
  net: systemport: Fix 64-bit stats deadlock
  net: vrf: avoid gcc-4.6 warning
  qed: remove unnecessary call to memset
  tg3: clean up redundant initialization of tnapi
  tls: make tls_sw_free_resources static
  sctp: potential read out of bounds in sctp_ulpevent_type_enabled()
  MAINTAINERS: review Renesas DT bindings as well
  net_sched: gen_estimator: fix scaling error in bytes/packets samples
  nfp: wait for the NSP resource to appear on boot
  nfp: wait for board state before talking to the NSP
  ...

7 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Sat, 16 Sep 2017 18:24:26 +0000 (11:24 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull more input updates from Dmitry Torokhov:
 "A second round of updates for the input subsystem:

   - a new driver for PWM-controlled vibrators

   - ucb1400 touchscreen driver had completely busted suspend/resume
     handling

   - we now handle "home" button found on some devices with Goodix
     touchscreens

   - assorted other fixups"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: i8042 - add Gigabyte P57 to the keyboard reset table
  Input: xpad - validate USB endpoint type during probe
  Input: ucb1400_ts - fix suspend and resume handling
  Input: edt-ft5x06 - fix access to non-existing register
  Input: elantech - make arrays debounce_packet static, reduces object code size
  Input: surface3_spi - make const array header static, reduces object code size
  Input: goodix - add support for capacitive home button
  Input: add a driver for PWM controllable vibrators
  Input: adi - make array seq static, reduces object code size

7 years agofirmware: Restore support for built-in firmware
Markus Trippelsdorf [Sat, 16 Sep 2017 09:01:16 +0000 (11:01 +0200)]
firmware: Restore support for built-in firmware

Commit 5620a0d1aac ("firmware: delete in-kernel firmware") removed the
entire firmware directory.  Unfortunately it thereby also removed the
support for built-in firmware.

This restores the ability to build firmware directly into the kernel by
pruning the original Makefile to the necessary minimum.  The default for
EXTRA_FIRMWARE_DIR is now the standard directory /lib/firmware/.

Fixes: 5620a0d1aac ("firmware: delete in-kernel firmware")
Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Acked-by: Greg K-H <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agomlxsw: spectrum_router: Only handle IPv4 and IPv6 events
Ido Schimmel [Fri, 15 Sep 2017 13:31:07 +0000 (15:31 +0200)]
mlxsw: spectrum_router: Only handle IPv4 and IPv6 events

The driver doesn't support events from address families other than IPv4
and IPv6, so ignore them. Otherwise, we risk queueing a work item before
it's initialized.

This can happen in case a VRF is configured when MROUTE_MULTIPLE_TABLES
is enabled, as the VRF driver will try to add an l3mdev rule for the
IPMR family.

Fixes: 65e65ec137f4 ("mlxsw: spectrum_router: Don't ignore IPv6 notifications")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Andreas Rammhold <andreas@rammhold.de>
Reported-by: Florian Klink <flokli@flokli.de>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoDocumentation: link in networking docs
Pavel Machek [Sat, 16 Sep 2017 14:28:02 +0000 (16:28 +0200)]
Documentation: link in networking docs

Fix link in filter.txt.

Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agotcp: fix data delivery rate
Eric Dumazet [Fri, 15 Sep 2017 23:47:42 +0000 (16:47 -0700)]
tcp: fix data delivery rate

Now skb->mstamp_skb is updated later, we also need to call
tcp_rate_skb_sent() after the update is done.

Fixes: 8c72c65b426b ("tcp: update skb->skb_mstamp more carefully")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch '4.14-features' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Linus Torvalds [Sat, 16 Sep 2017 03:43:33 +0000 (20:43 -0700)]
Merge branch '4.14-features' of git://git.linux-mips.org/ralf/upstream-linus

Pull MIPS updates from Ralf Baechle:
 "This is the main pull request for 4.14 for MIPS; below a summary of
  the non-merge commits:

  CM:
   - Rename mips_cm_base to mips_gcr_base
   - Specify register size when generating accessors
   - Use BIT/GENMASK for register fields, order & drop shifts
   - Add cluster & block args to mips_cm_lock_other()

  CPC:
   - Use common CPS accessor generation macros
   - Use BIT/GENMASK for register fields, order & drop shifts
   - Introduce register modify (set/clear/change) accessors
   - Use change_*, set_* & clear_* where appropriate
   - Add CM/CPC 3.5 register definitions
   - Use GlobalNumber macros rather than magic numbers
   - Have asm/mips-cps.h include CM & CPC headers
   - Cluster support for topology functions
   - Detect CPUs in secondary clusters

  CPS:
   - Read GIC_VL_IDENT directly, not via irqchip driver

  DMA:
   - Consolidate coherent and non-coherent dma_alloc code
   - Don't use dma_cache_sync to implement fd_cacheflush

  FPU emulation / FP assist code:
   - Another series of 14 commits fixing corner cases such as NaN
     propgagation and other special input values.
   - Zero bits 32-63 of the result for a CLASS.D instruction.
   - Enhanced statics via debugfs
   - Do not use bools for arithmetic. GCC 7.1 moans about this.
   - Correct user fault_addr type

  Generic MIPS:
   - Enhancement of stack backtraces
   - Cleanup from non-existing options
   - Handle non word sized instructions when examining frame
   - Fix detection and decoding of ADDIUSP instruction
   - Fix decoding of SWSP16 instruction
   - Refactor handling of stack pointer in get_frame_info
   - Remove unreachable code from force_fcr31_sig()
   - Convert to using %pOF instead of full_name
   - Remove the R6000 support.
   - Move FP code from *_switch.S to *_fpu.S
   - Remove unused ST_OFF from r2300_switch.S
   - Allow platform to specify multiple its.S files
   - Add #includes to various files to ensure code builds reliable and
     without warning..
   - Remove __invalidate_kernel_vmap_range
   - Remove plat_timer_setup
   - Declare various variables & functions static
   - Abstract CPU core & VP(E) ID access through accessor functions
   - Store core & VP IDs in GlobalNumber-style variable
   - Unify checks for sibling CPUs
   - Add CPU cluster number accessors
   - Prevent direct use of generic_defconfig
   - Make CONFIG_MIPS_MT_SMP default y
   - Add __ioread64_copy
   - Remove unnecessary inclusions of linux/irqchip/mips-gic.h

  GIC:
   - Introduce asm/mips-gic.h with accessor functions
   - Use new GIC accessor functions in mips-gic-timer
   - Remove counter access functions from irq-mips-gic.c
   - Remove gic_read_local_vp_id() from irq-mips-gic.c
   - Simplify shared interrupt pending/mask reads in irq-mips-gic.c
   - Simplify gic_local_irq_domain_map() in irq-mips-gic.c
   - Drop gic_(re)set_mask() functions in irq-mips-gic.c
   - Remove gic_set_polarity(), gic_set_trigger(), gic_set_dual_edge(),
     gic_map_to_pin() and gic_map_to_vpe() from irq-mips-gic.c.
   - Convert remaining shared reg access, local int mask access and
     remaining local reg access to new accessors
   - Move GIC_LOCAL_INT_* to asm/mips-gic.h
   - Remove GIC_CPU_INT* macros from irq-mips-gic.c
   - Move various definitions to the driver
   - Remove gic_get_usm_range()
   - Remove __gic_irq_dispatch() forward declaration
   - Remove gic_init()
   - Use mips_gic_present() in place of gic_present and remove
     gic_present
   - Move gic_get_c0_*_int() to asm/mips-gic.h
   - Remove linux/irqchip/mips-gic.h
   - Inline __gic_init()
   - Inline gic_basic_init()
   - Make pcpu_masks a per-cpu variable
   - Use pcpu_masks to avoid reading GIC_SH_MASK*
   - Clean up mti, reserved-cpu-vectors handling
   - Use cpumask_first_and() in gic_set_affinity()
   - Let the core set struct irq_common_data affinity

  microMIPS:
   - Fix microMIPS stack unwinding on big endian systems

  MIPS-GIC:
   - SYNC after enabling GIC region

  NUMA:
   - Remove the unused parent_node() macro

  R6:
   - Constify r2_decoder_tables
   - Add accessor & bit definitions for GlobalNumber

  SMP:
   - Constify smp ops
   - Allow boot_secondary SMP op to return errors

  VDSO:
   - Drop gic_get_usm_range() usage
   - Avoid use of linux/irqchip/mips-gic.h

  Platform changes:

  Alchemy:
   - Add devboard machine type to cpuinfo
   - update cpu feature overrides
   - Threaded carddetect irqs for devboards

  AR7:
   - allow NULL clock for clk_get_rate

  BCM63xx:
   - Fix ENETDMA_6345_MAXBURST_REG offset
   - Allow NULL clock for clk_get_rate

  CI20:
   - Enable GPIO and RTC drivers in defconfig
   - Add ethernet and fixed-regulator nodes to DTS

  Generic platform:
   - Move Boston and NI 169445 FIT image source to their own files
   - Include asm/bootinfo.h for plat_fdt_relocated()
   - Include asm/time.h for get_c0_*_int()
   - Include asm/bootinfo.h for plat_fdt_relocated()
   - Include asm/time.h for get_c0_*_int()
   - Allow filtering enabled boards by requirements
   - Don't explicitly disable CONFIG_USB_SUPPORT
   - Bump default NR_CPUS to 16

  JZ4700:
   - Probe the jz4740-rtc driver from devicetree

  Lantiq:
   - Drop check of boot select from the spi-falcon driver.
   - Drop check of boot select from the lantiq-flash MTD driver.
   - Access boot cause register in the watchdog driver through regmap
   - Add device tree binding documentation for the watchdog driver
   - Add docs for the RCU DT bindings.
   - Convert the fpi bus driver to a platform_driver
   - Remove ltq_reset_cause() and ltq_boot_select(
   - Switch to a proper reset driver
   - Switch to a new drivers/soc GPHY driver
   - Add an USB PHY driver for the Lantiq SoCs using the RCU module
   - Use of_platform_default_populate instead of __dt_register_buses
   - Enable MFD_SYSCON to be able to use it for the RCU MFD
   - Replace ltq_boot_select() with dummy implementation.

  Loongson 2F:
   - Allow NULL clock for clk_get_rate

  Malta:
   - Use new GIC accessor functions

  NI 169445:
   - Add support for NI 169445 board.
   - Only include in 32r2el kernels

  Octeon:
   - Add support for watchdog of 78XX SOCs.
   - Add support for watchdog of CN68XX SOCs.
   - Expose support for mips32r1, mips32r2 and mips64r1
   - Enable more drivers in config file
   - Add support for accessing the boot vector.
   - Remove old boot vector code from watchdog driver
   - Define watchdog registers for 70xx, 73xx, 78xx, F75xx.
   - Make CSR functions node aware.
   - Allow access to CIU3 IRQ domains.
   - Misc cleanups in the watchdog driver

  Omega2+:
   - New board, add support and defconfig

  Pistachio:
   - Enable Root FS on NFS in defconfig

  Ralink:
   - Add Mediatek MT7628A SoC
   - Allow NULL clock for clk_get_rate
   - Explicitly request exclusive reset control in the pci-mt7620 PCI driver.

  SEAD3:
   - Only include in 32 bit kernels by default

  VoCore:
   - Add VoCore as a vendor t0 dt-bindings
   - Add defconfig file"

* '4.14-features' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (167 commits)
  MIPS: Refactor handling of stack pointer in get_frame_info
  MIPS: Stacktrace: Fix microMIPS stack unwinding on big endian systems
  MIPS: microMIPS: Fix decoding of swsp16 instruction
  MIPS: microMIPS: Fix decoding of addiusp instruction
  MIPS: microMIPS: Fix detection of addiusp instruction
  MIPS: Handle non word sized instructions when examining frame
  MIPS: ralink: allow NULL clock for clk_get_rate
  MIPS: Loongson 2F: allow NULL clock for clk_get_rate
  MIPS: BCM63XX: allow NULL clock for clk_get_rate
  MIPS: AR7: allow NULL clock for clk_get_rate
  MIPS: BCM63XX: fix ENETDMA_6345_MAXBURST_REG offset
  mips: Save all registers when saving the frame
  MIPS: Add DWARF unwinding to assembly
  MIPS: Make SAVE_SOME more standard
  MIPS: Fix issues in backtraces
  MIPS: jz4780: DTS: Probe the jz4740-rtc driver from devicetree
  MIPS: Ci20: Enable RTC driver
  watchdog: octeon-wdt: Add support for 78XX SOCs.
  watchdog: octeon-wdt: Add support for cn68XX SOCs.
  watchdog: octeon-wdt: File cleaning.
  ...

7 years agoMerge tag 'pci-v4.14-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Sat, 16 Sep 2017 03:25:06 +0000 (20:25 -0700)]
Merge tag 'pci-v4.14-fixes-1' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fix from Bjorn Helgaas:
 "Revert an attempt to fix a race while enabling upstream bridges
  because it broke iwlwifi firmware loading"

* tag 'pci-v4.14-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  Revert "PCI: Avoid race while enabling upstream bridges"

7 years agoMerge tag 'drm-fixes-for-v4.14-rc1' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sat, 16 Sep 2017 00:52:52 +0000 (17:52 -0700)]
Merge tag 'drm-fixes-for-v4.14-rc1' of git://people.freedesktop.org/~airlied/linux

Pull drm AMD fixes from Dave Airlie:
 "Just had a single AMD fixes pull from Alex for rc1"

* tag 'drm-fixes-for-v4.14-rc1' of git://people.freedesktop.org/~airlied/linux:
  drm/amdgpu: revert "fix deadlock of reservation between cs and gpu reset v2"
  drm/amdgpu: remove duplicate return statement
  drm/amdgpu: check memory allocation failure
  drm/amd/amdgpu: fix BANK_SELECT on Vega10 (v2)
  drm/amdgpu: inline amdgpu_ttm_do_bind again
  drm/amdgpu: fix amdgpu_ttm_bind
  drm/amdgpu: remove the GART copy hack
  drm/ttm:fix wrong decoding of bo_count
  drm/ttm: fix missing inc bo_count
  drm/amdgpu: set sched_hw_submission higher for KIQ (v3)
  drm/amdgpu: move default gart size setting into gmc modules
  drm/amdgpu: refine default gart size
  drm/amd/powerplay: ACG frequency added in PPTable
  drm/amdgpu: discard commands of killed processes
  drm/amdgpu: fix and cleanup shadow handling
  drm/amdgpu: add automatic per asic settings for gart_size
  drm/amdgpu/gfx8: fix spelling typo in mqd allocation
  drm/amd/powerplay: unhalt mec after loading
  drm/amdgpu/virtual_dce: Virtual display doesn't support disable vblank immediately
  drm/amdgpu: Fix huge page updates with CPU

7 years agoMerge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 16 Sep 2017 00:49:46 +0000 (17:49 -0700)]
Merge branch 'i2c/for-next' of git://git./linux/kernel/git/wsa/linux

Pull more i2c updates from Wolfram Sang:
 "I2C has two more new drivers: Altera FPGA and STM32F7"

* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: i2c-stm32f7: add driver
  i2c: i2c-stm32f4: use generic definition of speed enum
  dt-bindings: i2c-stm32: Document the STM32F7 I2C bindings
  i2c: altera: Add Altera I2C Controller driver
  dt-bindings: i2c: Add Altera I2C Controller

7 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 15 Sep 2017 22:43:55 +0000 (15:43 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull more KVM updates from Paolo Bonzini:
 - PPC bugfixes
 - RCU splat fix
 - swait races fix
 - pointless userspace-triggerable BUG() fix
 - misc fixes for KVM_RUN corner cases
 - nested virt correctness fixes + one host DoS
 - some cleanups
 - clang build fix
 - fix AMD AVIC with default QEMU command line options
 - x86 bugfixes

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits)
  kvm: nVMX: Handle deferred early VMLAUNCH/VMRESUME failure properly
  kvm: vmx: Handle VMLAUNCH/VMRESUME failure properly
  kvm: nVMX: Remove nested_vmx_succeed after successful VM-entry
  kvm,mips: Fix potential swait_active() races
  kvm,powerpc: Serialize wq active checks in ops->vcpu_kick
  kvm: Serialize wq active checks in kvm_vcpu_wake_up()
  kvm,x86: Fix apf_task_wake_one() wq serialization
  kvm,lapic: Justify use of swait_active()
  kvm,async_pf: Use swq_has_sleeper()
  sched/wait: Add swq_has_sleeper()
  KVM: VMX: Do not BUG() on out-of-bounds guest IRQ
  KVM: Don't accept obviously wrong gsi values via KVM_IRQFD
  kvm: nVMX: Don't allow L2 to access the hardware CR8
  KVM: trace events: update list of exit reasons
  KVM: async_pf: Fix #DF due to inject "Page not Present" and "Page Ready" exceptions simultaneously
  KVM: X86: Don't block vCPU if there is pending exception
  KVM: SVM: Add irqchip_split() checks before enabling AVIC
  KVM: Add struct kvm_vcpu pointer parameter to get_enable_apicv()
  KVM: SVM: Refactor AVIC vcpu initialization into avic_init_vcpu()
  KVM: x86: fix clang build
  ...

7 years agobpf/verifier: reject BPF_ALU64|BPF_END
Edward Cree [Fri, 15 Sep 2017 13:37:38 +0000 (14:37 +0100)]
bpf/verifier: reject BPF_ALU64|BPF_END

Neither ___bpf_prog_run nor the JITs accept it.
Also adds a new test case.

Fixes: 17a5267067f3 ("bpf: verifier (add verifier core)")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosctp: do not mark sk dumped when inet_sctp_diag_fill returns err
Xin Long [Fri, 15 Sep 2017 03:02:48 +0000 (11:02 +0800)]
sctp: do not mark sk dumped when inet_sctp_diag_fill returns err

sctp_diag would not actually dump out sk/asoc if inet_sctp_diag_fill
returns err, in which case it shouldn't mark sk dumped by setting
cb->args[3] as 1 in sctp_sock_dump().

Otherwise, it could cause some asocs to have no parent's sk dumped
in 'ss --sctp'.

So this patch is to not set cb->args[3] when inet_sctp_diag_fill()
returns err in sctp_sock_dump().

Fixes: 8f840e47f190 ("sctp: add the sctp_diag.c file")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosctp: fix an use-after-free issue in sctp_sock_dump
Xin Long [Fri, 15 Sep 2017 03:02:21 +0000 (11:02 +0800)]
sctp: fix an use-after-free issue in sctp_sock_dump

Commit 86fdb3448cc1 ("sctp: ensure ep is not destroyed before doing the
dump") tried to fix an use-after-free issue by checking !sctp_sk(sk)->ep
with holding sock and sock lock.

But Paolo noticed that endpoint could be destroyed in sctp_rcv without
sock lock protection. It means the use-after-free issue still could be
triggered when sctp_rcv put and destroy ep after sctp_sock_dump checks
!ep, although it's pretty hard to reproduce.

I could reproduce it by mdelay in sctp_rcv while msleep in sctp_close
and sctp_sock_dump long time.

This patch is to add another param cb_done to sctp_for_each_transport
and dump ep->assocs with holding tsp after jumping out of transport's
traversal in it to avoid this issue.

It can also improve sctp diag dump to make it run faster, as no need
to save sk into cb->args[5] and keep calling sctp_for_each_transport
any more.

This patch is also to use int * instead of int for the pos argument
in sctp_for_each_transport, which could make postion increment only
in sctp_for_each_transport and no need to keep changing cb->args[2]
in sctp_sock_filter and sctp_sock_dump any more.

Fixes: 86fdb3448cc1 ("sctp: ensure ep is not destroyed before doing the dump")
Reported-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonetvsc: increase default receive buffer size
Stephen Hemminger [Thu, 14 Sep 2017 16:31:07 +0000 (09:31 -0700)]
netvsc: increase default receive buffer size

The default receive buffer size was reduced by recent change
to a value which was appropriate for 10G and Windows Server 2016.
But the value is too small for full performance with 40G on Azure.
Increase the default back to maximum supported by host.

Fixes: 8b5327975ae1 ("netvsc: allow controlling send/recv buffer size")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agotcp: update skb->skb_mstamp more carefully
Eric Dumazet [Thu, 14 Sep 2017 03:30:39 +0000 (20:30 -0700)]
tcp: update skb->skb_mstamp more carefully

liujian reported a problem in TCP_USER_TIMEOUT processing with a patch
in tcp_probe_timer() :
      https://www.spinics.net/lists/netdev/msg454496.html

After investigations, the root cause of the problem is that we update
skb->skb_mstamp of skbs in write queue, even if the attempt to send a
clone or copy of it failed. One reason being a routing problem.

This patch prevents this, solving liujian issue.

It also removes a potential RTT miscalculation, since
__tcp_retransmit_skb() is not OR-ing TCP_SKB_CB(skb)->sacked with
TCPCB_EVER_RETRANS if a failure happens, but skb->skb_mstamp has
been changed.

A future ACK would then lead to a very small RTT sample and min_rtt
would then be lowered to this too small value.

Tested:

# cat user_timeout.pkt
--local_ip=192.168.102.64

    0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
   +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
   +0 bind(3, ..., ...) = 0
   +0 listen(3, 1) = 0

   +0 `ifconfig tun0 192.168.102.64/16; ip ro add 192.0.2.1 dev tun0`

   +0 < S 0:0(0) win 0 <mss 1460>
   +0 > S. 0:0(0) ack 1 <mss 1460>

  +.1 < . 1:1(0) ack 1 win 65530
   +0 accept(3, ..., ...) = 4

   +0 setsockopt(4, SOL_TCP, TCP_USER_TIMEOUT, [3000], 4) = 0
   +0 write(4, ..., 24) = 24
   +0 > P. 1:25(24) ack 1 win 29200
   +.1 < . 1:1(0) ack 25 win 65530

//change the ipaddress
   +1 `ifconfig tun0 192.168.0.10/16`

   +1 write(4, ..., 24) = 24
   +1 write(4, ..., 24) = 24
   +1 write(4, ..., 24) = 24
   +1 write(4, ..., 24) = 24

   +0 `ifconfig tun0 192.168.102.64/16`
   +0 < . 1:2(1) ack 25 win 65530
   +0 `ifconfig tun0 192.168.0.10/16`

   +3 write(4, ..., 24) = -1

# ./packetdrill user_timeout.pkt

Signed-off-by: Eric Dumazet <edumazet@googl.com>
Reported-by: liujian <liujian56@huawei.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: ipv4: fix l3slave check for index returned in IP_PKTINFO
David Ahern [Thu, 14 Sep 2017 00:11:37 +0000 (17:11 -0700)]
net: ipv4: fix l3slave check for index returned in IP_PKTINFO

rt_iif is only set to the actual egress device for the output path. The
recent change to consider the l3slave flag when returning IP_PKTINFO
works for local traffic (the correct device index is returned), but it
broke the more typical use case of packets received from a remote host
always returning the VRF index rather than the original ingress device.
Update the fixup to consider l3slave and rt_iif actually getting set.

Fixes: 1dfa76390bf05 ("net: ipv4: add check for l3slave for index returned in IP_PKTINFO")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: smsc911x: Quieten netif during suspend
Geert Uytterhoeven [Wed, 13 Sep 2017 17:42:05 +0000 (19:42 +0200)]
net: smsc911x: Quieten netif during suspend

If the network interface is kept running during suspend, the net core
may call net_device_ops.ndo_start_xmit() while the Ethernet device is
still suspended, which may lead to a system crash.

E.g. on sh73a0/kzm9g and r8a73a4/ape6evm, the external Ethernet chip is
driven by a PM controlled clock.  If the Ethernet registers are accessed
while the clock is not running, the system will crash with an imprecise
external abort.

As this is a race condition with a small time window, it is not so easy
to trigger at will.  Using pm_test may increase your chances:

    # echo 0 > /sys/module/printk/parameters/console_suspend
    # echo platform > /sys/power/pm_test
    # echo mem > /sys/power/state

To fix this, make sure the network interface is quietened during
suspend.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: systemport: Fix 64-bit stats deadlock
Florian Fainelli [Tue, 12 Sep 2017 20:14:26 +0000 (13:14 -0700)]
net: systemport: Fix 64-bit stats deadlock

We can enter a deadlock situation because there is no sufficient protection
when ndo_get_stats64() runs in process context to guard against RX or TX NAPI
contexts running in softirq, this can lead to the following lockdep splat and
actual deadlock was experienced as well with an iperf session in the background
and a while loop doing ifconfig + ethtool.

[    5.780350] ================================
[    5.784679] WARNING: inconsistent lock state
[    5.789011] 4.13.0-rc7-02179-g32fae27c725d #70 Not tainted
[    5.794561] --------------------------------
[    5.798890] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[    5.804971] swapper/0/0 [HC0[0]:SC1[1]:HE0:SE0] takes:
[    5.810175]  (&syncp->seq#2){+.?...}, at: [<c0768a28>] bcm_sysport_tx_reclaim+0x30/0x54
[    5.818327] {SOFTIRQ-ON-W} state was registered at:
[    5.823278]   bcm_sysport_get_stats64+0x17c/0x258
[    5.828053]   dev_get_stats+0x38/0xac
[    5.831776]   rtnl_fill_stats+0x30/0x118
[    5.835761]   rtnl_fill_ifinfo+0x538/0xe24
[    5.839921]   rtmsg_ifinfo_build_skb+0x6c/0xd8
[    5.844430]   rtmsg_ifinfo_event.part.5+0x14/0x44
[    5.849201]   rtmsg_ifinfo+0x20/0x28
[    5.852837]   register_netdevice+0x628/0x6b8
[    5.857171]   register_netdev+0x14/0x24
[    5.861051]   bcm_sysport_probe+0x30c/0x438
[    5.865280]   platform_drv_probe+0x50/0xb0
[    5.869418]   driver_probe_device+0x2e8/0x450
[    5.873817]   __driver_attach+0x104/0x120
[    5.877871]   bus_for_each_dev+0x7c/0xc0
[    5.881834]   bus_add_driver+0x1b0/0x270
[    5.885797]   driver_register+0x78/0xf4
[    5.889675]   do_one_initcall+0x54/0x190
[    5.893646]   kernel_init_freeable+0x144/0x1d0
[    5.898135]   kernel_init+0x8/0x110
[    5.901665]   ret_from_fork+0x14/0x2c
[    5.905363] irq event stamp: 24263
[    5.908804] hardirqs last  enabled at (24262): [<c08eecf0>] net_rx_action+0xc4/0x4e4
[    5.916624] hardirqs last disabled at (24263): [<c0a7da00>] _raw_spin_lock_irqsave+0x1c/0x98
[    5.925143] softirqs last  enabled at (24258): [<c022a7fc>] irq_enter+0x84/0x98
[    5.932524] softirqs last disabled at (24259): [<c022a918>] irq_exit+0x108/0x16c
[    5.939985]
[    5.939985] other info that might help us debug this:
[    5.946576]  Possible unsafe locking scenario:
[    5.946576]
[    5.952556]        CPU0
[    5.955031]        ----
[    5.957506]   lock(&syncp->seq#2);
[    5.960955]   <Interrupt>
[    5.963604]     lock(&syncp->seq#2);
[    5.967227]
[    5.967227]  *** DEADLOCK ***
[    5.967227]
[    5.973222] 1 lock held by swapper/0/0:
[    5.977092]  #0:  (&(&ring->lock)->rlock){..-...}, at: [<c0768a18>] bcm_sysport_tx_reclaim+0x20/0x54

So just remove the u64_stats_update_begin()/end() pair in ndo_get_stats64()
since it does not appear to be useful for anything. No inconsistency was
observed with either ifconfig or ethtool, global TX counts equal the sum of
per-queue TX counts on a 32-bit architecture.

Fixes: 10377ba7673d ("net: systemport: Support 64bit statistics")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: vrf: avoid gcc-4.6 warning
Arnd Bergmann [Tue, 12 Sep 2017 20:10:53 +0000 (22:10 +0200)]
net: vrf: avoid gcc-4.6 warning

When building an allmodconfig kernel with gcc-4.6, we get a rather
odd warning:

drivers/net/vrf.c: In function ‘vrf_ip6_input_dst’:
drivers/net/vrf.c:964:3: error: initialized field with side-effects overwritten [-Werror]
drivers/net/vrf.c:964:3: error: (near initialization for ‘fl6’) [-Werror]

I have no idea what this warning is even trying to say, but it does
seem like a false positive. Reordering the initialization in to match
the structure definition gets rid of the warning, and might also avoid
whatever gcc thinks is wrong here.

Fixes: 9ff74384600a ("net: vrf: Handle ipv6 multicast and link-local addresses")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqed: remove unnecessary call to memset
Himanshu Jha [Tue, 12 Sep 2017 11:19:22 +0000 (16:49 +0530)]
qed: remove unnecessary call to memset

call to memset to assign 0 value immediately after allocating
memory with kzalloc is unnecesaary as kzalloc allocates the memory
filled with 0 value.

Semantic patch used to resolve this issue:

@@
expression e,e2; constant c;
statement S;
@@

  e = kzalloc(e2, c);
  if(e == NULL) S
- memset(e, 0, e2);

Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Acked-by: Sudarsana Kalluru <sudarsana.kalluru@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'firmware_removal-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 15 Sep 2017 19:58:55 +0000 (12:58 -0700)]
Merge tag 'firmware_removal-4.14-rc1' of git://git./linux/kernel/git/gregkh/driver-core

Pull firmware removal from Greg KH:
 "Many many years ago (at the kernel summit in Boston), we all came to
  the agreement that the firmware/ tree should be dropped from the
  kernel, and everyone use the linux-firmware package instead. For some
  minor reason, David Woodhouse didn't send the pull request at that
  point in time, and everyone forgot about this.

  The topic came up in the hallway track at the Plumbers conference this
  week, so here's a single patch that drops the whole firmware tree. The
  last firmware update was back in 2013, and all distros have been using
  linux-firmware instead since at least that year, if not before. The
  only commits to that directory since 2013 was some kbuild fixups for
  various build tool issues.

  So lets finally drop this, we don't need to lug them around in the
  kernel source tree anymore, especially as no one wants or uses them.

  This has passed build testing with 0-day, I don't think it made it
  into linux-next this week, but I figured it was good to get in before
  4.14-rc1 was out"

* tag 'firmware_removal-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  firmware: delete in-kernel firmware

7 years agoMerge tag 'nios2-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan...
Linus Torvalds [Fri, 15 Sep 2017 19:47:21 +0000 (12:47 -0700)]
Merge tag 'nios2-v4.14-rc1' of git://git./linux/kernel/git/lftan/nios2

Pull arch/nios2 update from Ley Foon Tan.

* tag 'nios2-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
  nios2: time: Read timer in get_cycles only if initialized
  nios2: add earlycon support to 3c120 devboard DTS

7 years agoMerge tag 'powerpc-4.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Fri, 15 Sep 2017 19:44:59 +0000 (12:44 -0700)]
Merge tag 'powerpc-4.14-2' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:
 "Just one fix, for the handling of alignment interrupts on dcbz
  instructions.

  Thanks to Paul Mackerras, Christian Zigotzky, Michal Sojka"

* tag 'powerpc-4.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc: Fix handling of alignment interrupt on dcbz instruction

7 years agoMerge tag 'for-linus-4.14-ofs2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 15 Sep 2017 19:16:18 +0000 (12:16 -0700)]
Merge tag 'for-linus-4.14-ofs2' of git://git./linux/kernel/git/hubcap/linux

Pull orangefs updates from Mike Marshall:
 "Some cleanups and a big bug fix for ACLs.

  When I was reviewing Jan Kara's ACL patch, I realized that Orangefs
  ACL code was busted, not just in the kernel module, but in the server
  as well. I've been working on the code in the server mostly, but
  here's one kernel patch, there will be more"

* tag 'for-linus-4.14-ofs2' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
  orangefs: Adjust three checks for null pointers
  orangefs: Use kcalloc() in orangefs_prepare_cdm_array()
  orangefs: Delete error messages for a failed memory allocation in five functions
  orangefs: constify xattr_handler structure
  orangefs: don't call filemap_write_and_wait from fsync
  orangefs: off by ones in xattr size checks
  orangefs: documentation clean up
  orangefs: react properly to posix_acl_update_mode's aftermath.
  orangefs: Don't clear SGID when inheriting ACLs

7 years agoMerge branch 'next' into for-linus
Dmitry Torokhov [Fri, 15 Sep 2017 16:52:21 +0000 (09:52 -0700)]
Merge branch 'next' into for-linus

Prepare second round of input updates for 4.14 merge window.

7 years agoInput: i8042 - add Gigabyte P57 to the keyboard reset table
Kai-Heng Feng [Fri, 15 Sep 2017 16:36:16 +0000 (09:36 -0700)]
Input: i8042 - add Gigabyte P57 to the keyboard reset table

Similar to other Gigabyte laptops, the touchpad on P57 requires a
keyboard reset to detect Elantech touchpad correctly.

BugLink: https://bugs.launchpad.net/bugs/1594214
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
7 years agokvm: nVMX: Handle deferred early VMLAUNCH/VMRESUME failure properly
Jim Mattson [Thu, 14 Sep 2017 23:31:44 +0000 (16:31 -0700)]
kvm: nVMX: Handle deferred early VMLAUNCH/VMRESUME failure properly

When emulating a nested VM-entry from L1 to L2, several control field
validation checks are deferred to the hardware. Should one of these
validation checks fail, vcpu_vmx_run will set the vmx->fail flag. When
this happens, the L2 guest state is not loaded (even in part), and
execution should continue in L1 with the next instruction after the
VMLAUNCH/VMRESUME.

The VMCS12 is not modified (except for the VM-instruction error
field), the VMCS12 MSR save/load lists are not processed, and the CPU
state is not loaded from the VMCS12 host area. Moreover, the vmcs02
exit reason is stale, so it should not be consulted for any reason.

Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
7 years agokvm: vmx: Handle VMLAUNCH/VMRESUME failure properly
Jim Mattson [Thu, 14 Sep 2017 23:31:42 +0000 (16:31 -0700)]
kvm: vmx: Handle VMLAUNCH/VMRESUME failure properly

On an early VMLAUNCH/VMRESUME failure (i.e. one which sets the
VM-instruction error field of the current VMCS), the launch state of
the current VMCS is not set to "launched," and the VM-exit information
fields of the current VMCS (including IDT-vectoring information and
exit reason) are stale.

On a late VMLAUNCH/VMRESUME failure (i.e. one which sets the high bit
of the exit reason field), the launch state of the current VMCS is not
set to "launched," and only two of the VM-exit information fields of
the current VMCS are modified (exit reason and exit
qualification). The remaining VM-exit information fields of the
current VMCS (including IDT-vectoring information, in particular) are
stale.

Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
7 years agokvm: nVMX: Remove nested_vmx_succeed after successful VM-entry
Jim Mattson [Thu, 14 Sep 2017 23:31:40 +0000 (16:31 -0700)]
kvm: nVMX: Remove nested_vmx_succeed after successful VM-entry

After a successful VM-entry, RFLAGS is cleared, with the exception of
bit 1, which is always set. This is handled by load_vmcs12_host_state.

Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
7 years agokvm,mips: Fix potential swait_active() races
Davidlohr Bueso [Wed, 13 Sep 2017 20:08:24 +0000 (13:08 -0700)]
kvm,mips: Fix potential swait_active() races

For example, the following could occur, making us miss a wakeup:

CPU0 CPU1
kvm_vcpu_block kvm_mips_comparecount_func
  [L] swait_active(&vcpu->wq)
  [S] prepare_to_swait(&vcpu->wq)
  [L] if (!kvm_vcpu_has_pending_timer(vcpu))
         schedule()                       [S] queue_timer_int(vcpu)

Ensure that the swait_active() check is not hoisted over the interrupt.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
7 years agokvm,powerpc: Serialize wq active checks in ops->vcpu_kick
Davidlohr Bueso [Wed, 13 Sep 2017 20:08:23 +0000 (13:08 -0700)]
kvm,powerpc: Serialize wq active checks in ops->vcpu_kick

Particularly because kvmppc_fast_vcpu_kick_hv() is a callback,
ensure that we properly serialize wq active checks in order to
avoid potentially missing a wakeup due to racing with the waiter
side.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
7 years agokvm: Serialize wq active checks in kvm_vcpu_wake_up()
Davidlohr Bueso [Wed, 13 Sep 2017 20:08:22 +0000 (13:08 -0700)]
kvm: Serialize wq active checks in kvm_vcpu_wake_up()

This is a generic call and can be suceptible to races
in reading the wq task_list while another task is adding
itself to the list. Add a full barrier by using the
swq_has_sleeper() helper.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
7 years agokvm,x86: Fix apf_task_wake_one() wq serialization
Davidlohr Bueso [Wed, 13 Sep 2017 20:08:21 +0000 (13:08 -0700)]
kvm,x86: Fix apf_task_wake_one() wq serialization

During code inspection, the following potential race was seen:

CPU0                    CPU1
kvm_async_pf_task_wait apf_task_wake_one
  [L] swait_active(&n->wq)
  [S] prepare_to_swait(&n.wq)
  [L] if (!hlist_unhahed(&n.link))
schedule()   [S] hlist_del_init(&n->link);

Properly serialize swait_active() checks such that a wakeup is
not missed.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
7 years agokvm,lapic: Justify use of swait_active()
Davidlohr Bueso [Wed, 13 Sep 2017 20:08:20 +0000 (13:08 -0700)]
kvm,lapic: Justify use of swait_active()

A comment might serve future readers.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
7 years agokvm,async_pf: Use swq_has_sleeper()
Davidlohr Bueso [Wed, 13 Sep 2017 20:08:19 +0000 (13:08 -0700)]
kvm,async_pf: Use swq_has_sleeper()

... as we've got the new helper now. This caller already
does the right thing, hence no changes in semantics.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
7 years agosched/wait: Add swq_has_sleeper()
Davidlohr Bueso [Wed, 13 Sep 2017 20:08:18 +0000 (13:08 -0700)]
sched/wait: Add swq_has_sleeper()

Which is the equivalent of what we have in regular waitqueues.
I'm not crazy about the name, but this also helps us get both
apis closer -- which iirc comes originally from the -net folks.

We also duplicate the comments for the lockless swait_active(),
from wait.h. Future users will make use of this interface.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
7 years agoKVM: VMX: Do not BUG() on out-of-bounds guest IRQ
Jan H. Schönherr [Thu, 7 Sep 2017 18:02:30 +0000 (19:02 +0100)]
KVM: VMX: Do not BUG() on out-of-bounds guest IRQ

The value of the guest_irq argument to vmx_update_pi_irte() is
ultimately coming from a KVM_IRQFD API call. Do not BUG() in
vmx_update_pi_irte() if the value is out-of bounds. (Especially,
since KVM as a whole seems to hang after that.)

Instead, print a message only once if we find that we don't have a
route for a certain IRQ (which can be out-of-bounds or within the
array).

This fixes CVE-2017-1000252.

Fixes: efc644048ecde54 ("KVM: x86: Update IRTE for posted-interrupts")
Signed-off-by: Jan H. Schönherr <jschoenh@amazon.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
7 years agoKVM: Don't accept obviously wrong gsi values via KVM_IRQFD
Jan H. Schönherr [Thu, 7 Sep 2017 18:02:48 +0000 (19:02 +0100)]
KVM: Don't accept obviously wrong gsi values via KVM_IRQFD

We cannot add routes for gsi values >= KVM_MAX_IRQ_ROUTES -- see
kvm_set_irq_routing(). Hence, there is no sense in accepting them
via KVM_IRQFD. Prevent them from entering the system in the first
place.

Signed-off-by: Jan H. Schönherr <jschoenh@amazon.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
7 years agonios2: time: Read timer in get_cycles only if initialized
Guenter Roeck [Tue, 12 Sep 2017 03:45:26 +0000 (20:45 -0700)]
nios2: time: Read timer in get_cycles only if initialized

Mainline crashes as follows when running nios2 images.

On node 0 totalpages: 65536
free_area_init_node: node 0, pgdat c8408fa0, node_mem_map c8726000
  Normal zone: 512 pages used for memmap
  Normal zone: 0 pages reserved
  Normal zone: 65536 pages, LIFO batch:15
Unable to handle kernel NULL pointer dereference at virtual address 00000000
ea = c8003cb0, ra = c81cbf40, cause = 15
Kernel panic - not syncing: Oops

Problem is seen because get_cycles() is called before the timer it depends
on is initialized. Returning 0 in that situation fixes the problem.

Fixes: 33d72f3822d7 ("init/main.c: extract early boot entropy from the ..")
Cc: Laura Abbott <labbott@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Daniel Micay <danielmicay@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
7 years agonios2: add earlycon support to 3c120 devboard DTS
Tobias Klauser [Tue, 20 Jun 2017 07:43:18 +0000 (09:43 +0200)]
nios2: add earlycon support to 3c120 devboard DTS

Allow earlycon to be used on the JTAG UART present in the 3c120 GHRD.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>