platform/kernel/linux-starfive.git
6 years agoARM: dts: r8a7792: sort root sub-nodes alphabetically
Simon Horman [Mon, 18 Dec 2017 21:27:01 +0000 (22:27 +0100)]
ARM: dts: r8a7792: sort root sub-nodes alphabetically

Sort root sub-nodes alphabetically to allow for easier maintenance
of this file.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
6 years agoARM: dts: r8a7745: move timer node out of bus
Simon Horman [Mon, 18 Dec 2017 21:46:57 +0000 (22:46 +0100)]
ARM: dts: r8a7745: move timer node out of bus

The timer node does not have any register properties and thus shouldn't be
placed on the bus.

This problem is flagged by the compiler as follows:
$ make dtbs W=1
...
arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dtb: Warning (simple_bus_reg): Node /soc/timer missing or empty reg/ranges property
arch/arm/boot/dts/r8a7745-iwg22d-sodimm-dbhd-ca.dtb: Warning (simple_bus_reg): Node /soc/timer missing or empty reg/ranges property
  DTC     arch/arm/boot/dts/r8a7745-sk-rzg1e.dtb
arch/arm/boot/dts/r8a7745-sk-rzg1e.dtb: Warning (simple_bus_reg): Node /soc/timer missing or empty reg/ranges property

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
6 years agoARM: dts: r8a7745: sort root sub-nodes alphabetically
Simon Horman [Mon, 18 Dec 2017 21:50:43 +0000 (22:50 +0100)]
ARM: dts: r8a7745: sort root sub-nodes alphabetically

Sort root sub-nodes alphabetically to allow for easier maintenance
of this file.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
6 years agoARM: dts: r8a7745: Add CMT SoC specific support
Fabrizio Castro [Mon, 18 Dec 2017 17:39:03 +0000 (17:39 +0000)]
ARM: dts: r8a7745: Add CMT SoC specific support

Add CMT[01] support to SoC DT.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: Add CMT SoC specific support
Fabrizio Castro [Mon, 18 Dec 2017 17:39:02 +0000 (17:39 +0000)]
ARM: dts: r8a7743: Add CMT SoC specific support

Add CMT[01] support to SoC DT.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7745: Add TPU support
Fabrizio Castro [Mon, 18 Dec 2017 18:06:51 +0000 (18:06 +0000)]
ARM: dts: r8a7745: Add TPU support

Add TPU support to SoC DT.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7745: Add PWM SoC support
Fabrizio Castro [Mon, 18 Dec 2017 18:06:49 +0000 (18:06 +0000)]
ARM: dts: r8a7745: Add PWM SoC support

Add the definitions for pwm[0123456] to the SoC .dtsi.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: Add thermal device to DT
Biju Das [Tue, 19 Dec 2017 13:17:29 +0000 (13:17 +0000)]
ARM: dts: r8a7743: Add thermal device to DT

This patch instantiates the thermal sensor module with thermal-zone
support.

This patch is based on the commit cac68a56e34b
("ARM: dts: r8a7791: enable to use thermal-zone") by Kuninori Morimoto.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: Add TPU support
Fabrizio Castro [Tue, 19 Dec 2017 13:35:00 +0000 (13:35 +0000)]
ARM: dts: r8a7743: Add TPU support

Add TPU support to SoC DT.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: Add PWM SoC support
Fabrizio Castro [Tue, 19 Dec 2017 13:34:58 +0000 (13:34 +0000)]
ARM: dts: r8a7743: Add PWM SoC support

Add the definitions for pwm[0123456] to the SoC .dtsi.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7793: Correct critical CPU temperature
Chris Paterson [Thu, 14 Dec 2017 09:08:41 +0000 (09:08 +0000)]
ARM: dts: r8a7793: Correct critical CPU temperature

The R-Car M2N hardware manual states that Tc = –40°C to +105°C. The
thermal sensor has an accuracy of ±5°C and there can be a temperature
difference of 1 or 2 degrees between Tjmax and the thermal sensor due
to the location of the latter.

This means that 95°C is a safer value to use.

Fixes: 57f9156bc620ac56 ("ARM: dts: r8a7793: enable to use thermal-zone")
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7791: Correct critical CPU temperature
Chris Paterson [Thu, 14 Dec 2017 09:08:40 +0000 (09:08 +0000)]
ARM: dts: r8a7791: Correct critical CPU temperature

The R-Car M2W hardware manual states that Tc = –40°C to +105°C. The
thermal sensor has an accuracy of ±5°C and there can be a temperature
difference of 1 or 2 degrees between Tjmax and the thermal sensor due
to the location of the latter.

This means that 95°C is a safer value to use.

Fixes: cac68a56e34b9810 ("ARM: dts: r8a7791: enable to use thermal-zone")
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7790: Correct critical CPU temperature
Chris Paterson [Thu, 14 Dec 2017 09:08:39 +0000 (09:08 +0000)]
ARM: dts: r8a7790: Correct critical CPU temperature

The R-Car H2 hardware manual states that Tc = –40°C to +105°C. The
thermal sensor has an accuracy of ±5°C and there can be a temperature
difference of 1 or 2 degrees between Tjmax and the thermal sensor due
to the location of the latter.

This means that 95°C is a safer value to use.

Fixes: a8b805f3606f7af7 ("ARM: dts: r8a7790: enable to use thermal-zone")
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: Add sound support
Biju Das [Tue, 12 Dec 2017 18:25:10 +0000 (18:25 +0000)]
ARM: dts: r8a7743: Add sound support

Define the generic r8a7743(RZ/G1M) part of  the sound device node.

This patch is based on the r8a7791 sound work by Kuninori Morimoto.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: Add audio DMAC support
Biju Das [Tue, 12 Dec 2017 18:25:09 +0000 (18:25 +0000)]
ARM: dts: r8a7743: Add audio DMAC support

Instantiate the two audio DMA controllers on the r8a7743 device tree.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: Add audio clocks
Biju Das [Tue, 12 Dec 2017 18:25:08 +0000 (18:25 +0000)]
ARM: dts: r8a7743: Add audio clocks

Describe the external audio clocks required by the sound driver.
Boards that provide audio clocks need to override the clock frequencies.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7745: Add APMU node and second CPU core
Fabrizio Castro [Wed, 6 Dec 2017 12:05:29 +0000 (12:05 +0000)]
ARM: dts: r8a7745: Add APMU node and second CPU core

Add DT node for the Advanced Power Management Unit (APMU), add the
second CPU core, and use "renesas,apmu" as "enable-method".

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: alt: Convert to named i2c-gpio bindings
Geert Uytterhoeven [Thu, 30 Nov 2017 12:57:26 +0000 (13:57 +0100)]
ARM: dts: alt: Convert to named i2c-gpio bindings

Commits 7d29f509d2cfd807 ("dt-bindings: i2c: i2c-gpio: Add support for
named gpios") and 05c74778858d7d99 ("i2c: gpio: Add support for named
gpios in DT") introduced named i2c-gpio DT bindings, and deprecated the
more error-prone unnamed variant.

Switch to the new bindings, and add the missing GPIO_OPEN_DRAIN I/O
flags, which were implicitly assumed before.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: koelsch: Convert to named i2c-gpio bindings
Geert Uytterhoeven [Thu, 30 Nov 2017 12:57:25 +0000 (13:57 +0100)]
ARM: dts: koelsch: Convert to named i2c-gpio bindings

Commits 7d29f509d2cfd807 ("dt-bindings: i2c: i2c-gpio: Add support for
named gpios") and 05c74778858d7d99 ("i2c: gpio: Add support for named
gpios in DT") introduced named i2c-gpio DT bindings, and deprecated the
more error-prone unnamed variant.

Switch to the new bindings, and add the missing GPIO_OPEN_DRAIN I/O
flags, which were implicitly assumed before.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: lager: Convert to named i2c-gpio bindings
Geert Uytterhoeven [Thu, 30 Nov 2017 12:57:24 +0000 (13:57 +0100)]
ARM: dts: lager: Convert to named i2c-gpio bindings

Commits 7d29f509d2cfd807 ("dt-bindings: i2c: i2c-gpio: Add support for
named gpios") and 05c74778858d7d99 ("i2c: gpio: Add support for named
gpios in DT") introduced named i2c-gpio DT bindings, and deprecated the
more error-prone unnamed variant.

Switch to the new bindings, and add the missing GPIO_OPEN_DRAIN I/O
flags, which were implicitly assumed before.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: armadillo800eva: Convert to named i2c-gpio bindings
Geert Uytterhoeven [Thu, 30 Nov 2017 12:57:23 +0000 (13:57 +0100)]
ARM: dts: armadillo800eva: Convert to named i2c-gpio bindings

Commits 7d29f509d2cfd807 ("dt-bindings: i2c: i2c-gpio: Add support for
named gpios") and 05c74778858d7d99 ("i2c: gpio: Add support for named
gpios in DT") introduced named i2c-gpio DT bindings, and deprecated the
more error-prone unnamed variant.

Switch to the new bindings, and add the missing GPIO_OPEN_DRAIN I/O
flags, which were implicitly assumed before.

The latter gets rid of the message:

    gpio-208 (?): enforced open drain please flag it properly in DT/ACPI DSDT/board file
    gpio-91 (?): enforced open drain please flag it properly in DT/ACPI DSDT/board file

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: sh73a0: Remove CMT renesas,channels-mask
Magnus Damm [Tue, 28 Nov 2017 13:47:36 +0000 (14:47 +0100)]
ARM: dts: sh73a0: Remove CMT renesas,channels-mask

Update the DTS to remove the now deprecated "renesas,channels-mask"
property.

The channel information is now kept in the device driver and can easily
be determined based on the compat string.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7794: Remove CMT renesas,channels-mask
Magnus Damm [Tue, 28 Nov 2017 13:47:35 +0000 (14:47 +0100)]
ARM: dts: r8a7794: Remove CMT renesas,channels-mask

Update the DTS to remove the now deprecated "renesas,channels-mask"
property.

The channel information is now kept in the device driver and can easily
be determined based on the compat string.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7793: Remove CMT renesas,channels-mask
Magnus Damm [Tue, 28 Nov 2017 13:47:34 +0000 (14:47 +0100)]
ARM: dts: r8a7793: Remove CMT renesas,channels-mask

Update the DTS to remove the now deprecated "renesas,channels-mask"
property.

The channel information is now kept in the device driver and can easily
be determined based on the compat string.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7791: Remove CMT renesas,channels-mask
Magnus Damm [Tue, 28 Nov 2017 13:47:33 +0000 (14:47 +0100)]
ARM: dts: r8a7791: Remove CMT renesas,channels-mask

Update the DTS to remove the now deprecated "renesas,channels-mask"
property.

The channel information is now kept in the device driver and can easily
be determined based on the compat string.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7790: Remove CMT renesas,channels-mask
Magnus Damm [Tue, 28 Nov 2017 13:47:32 +0000 (14:47 +0100)]
ARM: dts: r8a7790: Remove CMT renesas,channels-mask

Update the DTS to remove the now deprecated "renesas,channels-mask"
property.

The channel information is now kept in the device driver and can easily
be determined based on the compat string.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7740: Remove CMT renesas,channels-mask
Magnus Damm [Tue, 28 Nov 2017 13:47:31 +0000 (14:47 +0100)]
ARM: dts: r8a7740: Remove CMT renesas,channels-mask

Update the DTS to remove the now deprecated "renesas,channels-mask"
property.

The channel information is now kept in the device driver and can easily
be determined based on the compat string.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a73a4: Remove CMT renesas,channels-mask
Magnus Damm [Tue, 28 Nov 2017 13:47:30 +0000 (14:47 +0100)]
ARM: dts: r8a73a4: Remove CMT renesas,channels-mask

Update the DTS to remove the now deprecated "renesas,channels-mask"
property.

The channel information is now kept in the device driver and can easily
be determined based on the compat string.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7794: Update CMT compat strings
Magnus Damm [Tue, 28 Nov 2017 13:47:29 +0000 (14:47 +0100)]
ARM: dts: r8a7794: Update CMT compat strings

Use recently updated R-Car Gen2 CMT0 and CMT1 compat strings.

With this change in place we can keep device-specific configuration in
the driver and the driver can be able to support CMT1 specific features.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7793: Update CMT compat strings
Magnus Damm [Tue, 28 Nov 2017 13:47:28 +0000 (14:47 +0100)]
ARM: dts: r8a7793: Update CMT compat strings

Use recently updated R-Car Gen2 CMT0 and CMT1 compat strings.

With this change in place we can keep device-specific configuration in
the driver and the driver can be able to support CMT1 specific features.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7791: Update CMT compat strings
Magnus Damm [Tue, 28 Nov 2017 13:47:27 +0000 (14:47 +0100)]
ARM: dts: r8a7791: Update CMT compat strings

Use recently updated R-Car Gen2 CMT0 and CMT1 compat strings.

With this change in place we can keep device-specific configuration in
the driver and the driver can be able to support CMT1 specific features.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7790: Update CMT compat strings
Magnus Damm [Tue, 28 Nov 2017 13:47:26 +0000 (14:47 +0100)]
ARM: dts: r8a7790: Update CMT compat strings

Use recently updated R-Car Gen2 CMT0 and CMT1 compat strings.

With this change in place we can keep device-specific configuration in
the driver and the driver can be able to support CMT1 specific features.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a73a4: Update CMT compat string
Magnus Damm [Tue, 28 Nov 2017 13:47:25 +0000 (14:47 +0100)]
ARM: dts: r8a73a4: Update CMT compat string

Use the recently updated r8a73a4 CMT1 compat string.

With this change in place we can keep device-specific configuration in
the driver and the driver can be able to support CMT1 specific features.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7794: Add SMP support
Sergei Shtylyov [Tue, 28 Nov 2017 13:39:01 +0000 (14:39 +0100)]
ARM: dts: r8a7794: Add SMP support

Add the device tree node for the Advanced Power Management Unit (APMU).
Use the "enable-method" prop to  point out that the APMU should be used
for the SMP support.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: genmai: Correct primary compatible value for eeprom
Geert Uytterhoeven [Thu, 16 Nov 2017 13:51:36 +0000 (14:51 +0100)]
ARM: dts: genmai: Correct primary compatible value for eeprom

The Renesas part number of the two-wire serial interface EEPROM is not
24C128, but R1EX24128ASA00A.

Hence change its primary compatible value to "renesas,r1ex24128".

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: koelsch: Correct primary compatible value for eeprom
Geert Uytterhoeven [Thu, 16 Nov 2017 13:51:35 +0000 (14:51 +0100)]
ARM: dts: koelsch: Correct primary compatible value for eeprom

The Renesas part number of the two-wire serial interface EEPROM is not
24C02, but R1EX24002ATAS0G.

Hence change its primary compatible value to "renesas,r1ex24002", like
on Gose.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7745: add VIN dt support
Fabrizio Castro [Thu, 16 Nov 2017 18:22:51 +0000 (18:22 +0000)]
ARM: dts: r8a7745: add VIN dt support

Add VIN[01] support to SoC dt. Also, add aliases.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: add VIN dt support
Fabrizio Castro [Thu, 16 Nov 2017 18:22:50 +0000 (18:22 +0000)]
ARM: dts: r8a7743: add VIN dt support

Add VIN[012] support to SoC dt. Also, add aliases.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: iwg20d-q7: Enable PCIe Controller
Biju Das [Mon, 13 Nov 2017 17:43:12 +0000 (17:43 +0000)]
ARM: dts: iwg20d-q7: Enable PCIe Controller

Enable PCIe Controller & set PCIe bus clock frequency.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: Add PCIe Controller device node
Biju Das [Mon, 13 Nov 2017 17:43:11 +0000 (17:43 +0000)]
ARM: dts: r8a7743: Add PCIe Controller device node

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: Add default PCIe bus clock
Biju Das [Mon, 13 Nov 2017 17:43:10 +0000 (17:43 +0000)]
ARM: dts: r8a7743: Add default PCIe bus clock

This patch adds a default PCIe bus clock node.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: iwg20d-q7-dbcm-ca: Add can1 support to camera DB
Fabrizio Castro [Tue, 7 Nov 2017 15:10:49 +0000 (15:10 +0000)]
ARM: dts: iwg20d-q7-dbcm-ca: Add can1 support to camera DB

CAN1 interface is exposed via connector J3 found on the camera daughter
board. This patch enables can1 DT node from within the daughter board
specific dtsi.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: iwg20d-q7-common: Add can0 support to carrier board
Fabrizio Castro [Tue, 7 Nov 2017 15:10:48 +0000 (15:10 +0000)]
ARM: dts: iwg20d-q7-common: Add can0 support to carrier board

This patch enables CAN0 interface exposed through connector J20 on the
carrier board.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: Add CAN[01] SoC support
Fabrizio Castro [Tue, 7 Nov 2017 15:10:47 +0000 (15:10 +0000)]
ARM: dts: r8a7743: Add CAN[01] SoC support

Add the definitions for can0 and can1 to the SoC .dtsi.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: iwg22d-sodimm-dbhd-ca: Add can1 support to HDMI DB
Fabrizio Castro [Tue, 7 Nov 2017 15:10:46 +0000 (15:10 +0000)]
ARM: dts: iwg22d-sodimm-dbhd-ca: Add can1 support to HDMI DB

CAN1 interface is exposed via connector J1 found on the HDMI daughter
board. This patch enables can1 DT node from within the daughter board
specific device tree.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: iwg22d-sodimm: Add can0 support to carrier board
Fabrizio Castro [Tue, 7 Nov 2017 15:10:45 +0000 (15:10 +0000)]
ARM: dts: iwg22d-sodimm: Add can0 support to carrier board

This patch enables CAN0 interface exposed through connector J15 on the
carrier board.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7745: Add CAN[01] SoC support
Fabrizio Castro [Tue, 7 Nov 2017 15:10:44 +0000 (15:10 +0000)]
ARM: dts: r8a7745: Add CAN[01] SoC support

Add the definitions for can0 and can1 to the SoC .dtsi.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: iwg22d-sodimm-dbhd-ca: Add HDMI video output
Fabrizio Castro [Mon, 6 Nov 2017 18:26:54 +0000 (18:26 +0000)]
ARM: dts: iwg22d-sodimm-dbhd-ca: Add HDMI video output

This patch enables the HDMI interface found on the expansion board.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7745: Add DU support
Fabrizio Castro [Mon, 6 Nov 2017 18:26:53 +0000 (18:26 +0000)]
ARM: dts: r8a7745: Add DU support

Add du node to r8a7745 SoC DT. Boards that want to enable the DU
need to specify the output topology.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: koelsch: Move cec_clock to root node
Simon Horman [Thu, 2 Nov 2017 09:18:05 +0000 (10:18 +0100)]
ARM: dts: koelsch: Move cec_clock to root node

cec-clock is a fixed clock generator that is not controlled by i2c5 and
thus should not be a child of the i2c5 bus node. Rather, it should be
a child of the root node of the DT.

Fixes: 02a5ab18d366 ("ARM: dts: koelsch: Add CEC clock for HDMI transmitter")
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
6 years agoARM: dts: iwg20d-q7: Add support for ttySC3
Fabrizio Castro [Mon, 9 Oct 2017 09:06:21 +0000 (10:06 +0100)]
ARM: dts: iwg20d-q7: Add support for ttySC3

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7794: Use R-Car SDHI Gen2 fallback compat string
Simon Horman [Tue, 17 Oct 2017 06:09:59 +0000 (08:09 +0200)]
ARM: dts: r8a7794: Use R-Car SDHI Gen2 fallback compat string

Use newly added R-Car SDHI Gen2 fallback compat string
in the DT of the r8a7794 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7793: Use R-Car SDHI Gen2 fallback compat string
Simon Horman [Tue, 17 Oct 2017 06:09:58 +0000 (08:09 +0200)]
ARM: dts: r8a7793: Use R-Car SDHI Gen2 fallback compat string

Use newly added R-Car SDHI Gen2 fallback compat string
in the DT of the r8a7793 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7792: Use R-Car SDHI Gen2 fallback compat string
Simon Horman [Tue, 17 Oct 2017 06:09:57 +0000 (08:09 +0200)]
ARM: dts: r8a7792: Use R-Car SDHI Gen2 fallback compat string

Use newly added R-Car SDHI Gen2 fallback compat string
in the DT of the r8a7792 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7791: Use R-Car SDHI Gen2 fallback compat string
Simon Horman [Tue, 17 Oct 2017 06:09:56 +0000 (08:09 +0200)]
ARM: dts: r8a7791: Use R-Car SDHI Gen2 fallback compat string

Use newly added R-Car SDHI Gen2 fallback compat string
in the DT of the r8a7791 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7790: Use R-Car SDHI Gen2 fallback compat string
Simon Horman [Tue, 17 Oct 2017 06:09:55 +0000 (08:09 +0200)]
ARM: dts: r8a7790: Use R-Car SDHI Gen2 fallback compat string

Use newly added R-Car SDHI Gen2 fallback compat string
in the DT of the r8a7790 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7779: Use R-Car SDHI Gen1 fallback compat string
Simon Horman [Tue, 17 Oct 2017 06:09:54 +0000 (08:09 +0200)]
ARM: dts: r8a7779: Use R-Car SDHI Gen1 fallback compat string

Use newly added R-Car SDHI Gen1 fallback compat string
in the DT of the r8a7779 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7778: Use R-Car SDHI Gen1 fallback compat string
Simon Horman [Tue, 17 Oct 2017 06:09:53 +0000 (08:09 +0200)]
ARM: dts: r8a7778: Use R-Car SDHI Gen1 fallback compat string

Use newly added R-Car SDHI Gen1 fallback compat string
in the DT of the r8a7778 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7745: Use R-Car SDHI Gen2 fallback compat string
Simon Horman [Tue, 17 Oct 2017 06:09:52 +0000 (08:09 +0200)]
ARM: dts: r8a7745: Use R-Car SDHI Gen2 fallback compat string

Use newly added R-Car SDHI Gen2 fallback compat string
in the DT of the r8a7745 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: Use R-Car SDHI Gen2 fallback compat string
Simon Horman [Tue, 17 Oct 2017 06:09:51 +0000 (08:09 +0200)]
ARM: dts: r8a7743: Use R-Car SDHI Gen2 fallback compat string

Use newly added R-Car SDHI Gen2 fallback compat string
in the DT of the r8a7743 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7745: Add IIC cores to dtsi
Fabrizio Castro [Mon, 23 Oct 2017 17:09:30 +0000 (18:09 +0100)]
ARM: dts: r8a7745: Add IIC cores to dtsi

Add iic0 and iic1 nodes to SoC dtsi. Also, define aliases i2c6
and i2c7. Board specific DT files will enable the interfaces
if needed.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Chris Paterson <chris.paterson2@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: iwg22d-sodimm: Enable HS-USB
Biju Das [Mon, 23 Oct 2017 17:09:29 +0000 (18:09 +0100)]
ARM: dts: iwg22d-sodimm: Enable HS-USB

From: Biju Das <biju.das@bp.renesas.com>

Enable HS-USB on iWave RZ/G1E carrier board.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7745: Enable DMA for HSUSB
Biju Das [Mon, 23 Oct 2017 17:09:28 +0000 (18:09 +0100)]
ARM: dts: r8a7745: Enable DMA for HSUSB

From: Biju Das <biju.das@bp.renesas.com>

This patch adds DMA properties to the HSUSB node.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7745: Add USB-DMAC device nodes
Biju Das [Mon, 23 Oct 2017 17:09:27 +0000 (18:09 +0100)]
ARM: dts: r8a7745: Add USB-DMAC device nodes

From: Biju Das <biju.das@bp.renesas.com>

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7745: Add HS-USB device node
Biju Das [Mon, 23 Oct 2017 17:09:26 +0000 (18:09 +0100)]
ARM: dts: r8a7745: Add HS-USB device node

From: Biju Das <biju.das@bp.renesas.com>

Define the R8A7745 generic part of the HS-USB device node. It is up to the
board file to enable the device.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: iwg22d-sodimm: sort dt nodes
Fabrizio Castro [Mon, 23 Oct 2017 17:09:25 +0000 (18:09 +0100)]
ARM: dts: iwg22d-sodimm: sort dt nodes

Improve the layout of r8a7745-iwg22d-sodimm.dts by sorting the
nodes alphabetically.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: iwg22d-sodimm-dbhd-ca: Add device tree for HDMI DB
Fabrizio Castro [Mon, 23 Oct 2017 17:09:24 +0000 (18:09 +0100)]
ARM: dts: iwg22d-sodimm-dbhd-ca: Add device tree for HDMI DB

Add file r8a7745-iwg22d-sodimm-dbhd-ca.dts to provide support for
iW-RainboW-G22D with HDMI daughter board plugged in.

The interfaces defined in the new .dts file are: scif1, scif5,
and hscif2.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: iwg22d: Add /dev/ttySC5 support
Fabrizio Castro [Mon, 23 Oct 2017 17:09:23 +0000 (18:09 +0100)]
ARM: dts: iwg22d: Add /dev/ttySC5 support

Add support for HSCIF1 as /dev/ttySC5, keeping the same naming
scheme adopted by iWave in their BSP release. This interface
uses RTS/CTS.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: iwg22d: Use /dev/ttySC3 as debug console
Fabrizio Castro [Mon, 23 Oct 2017 17:09:22 +0000 (18:09 +0100)]
ARM: dts: iwg22d: Use /dev/ttySC3 as debug console

The BSP release from iWave uses /dev/ttySC3 as debug console, this patch
renames the alias accordingly for compatibility.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: iwg20d-q7-dbcm-ca: Add HDMI video output
Fabrizio Castro [Mon, 23 Oct 2017 18:09:22 +0000 (19:09 +0100)]
ARM: dts: iwg20d-q7-dbcm-ca: Add HDMI video output

Although there is a HDMI connector on the q7 carrier board it is not
connected to the RZ/G1M SoC. One must use the HDMI connector on the
camera daughter board.

This patch adds support for this connector.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7743: Add DU support
Fabrizio Castro [Mon, 23 Oct 2017 18:09:21 +0000 (19:09 +0100)]
ARM: dts: r8a7743: Add DU support

Add du node to r8a7743 SoC DT. Boards that want to enable the DU
need to specify the output topology.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoARM: dts: r8a7794: Use R-Car Gen2 Ether fallback compat string
Simon Horman [Wed, 18 Oct 2017 07:27:28 +0000 (09:27 +0200)]
ARM: dts: r8a7794: Use R-Car Gen2 Ether fallback compat string

Use newly added R-Car Gen2 Ether fallback compat string
in the DT of the r8a7794 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
6 years agoARM: dts: r8a7793: Use R-Car Gen2 Ether fallback compat string
Simon Horman [Wed, 18 Oct 2017 07:27:27 +0000 (09:27 +0200)]
ARM: dts: r8a7793: Use R-Car Gen2 Ether fallback compat string

Use newly added R-Car Gen2 Ether fallback compat string
in the DT of the r8a7793 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
6 years agoARM: dts: r8a7791: Use R-Car Gen2 Ether fallback compat string
Simon Horman [Wed, 18 Oct 2017 07:27:26 +0000 (09:27 +0200)]
ARM: dts: r8a7791: Use R-Car Gen2 Ether fallback compat string

Use newly added R-Car Gen2 Ether fallback compat string
in the DT of the r8a7791 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
6 years agoARM: dts: r8a7790: Use R-Car Gen2 Ether fallback compat string
Simon Horman [Wed, 18 Oct 2017 07:27:25 +0000 (09:27 +0200)]
ARM: dts: r8a7790: Use R-Car Gen2 Ether fallback compat string

Use newly added R-Car Gen2 Ether fallback compat string
in the DT of the r8a7790 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
6 years agoARM: dts: r8a7778: Use R-Car Gen1 Ether fallback compat string
Simon Horman [Wed, 18 Oct 2017 07:27:24 +0000 (09:27 +0200)]
ARM: dts: r8a7778: Use R-Car Gen1 Ether fallback compat string

Use newly added R-Car Gen1 Ether fallback compat string
in the DT of the r8a7778 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
6 years agoARM: dts: r8a7745: Use R-Car Gen2 Ether fallback compat string
Simon Horman [Wed, 18 Oct 2017 07:27:23 +0000 (09:27 +0200)]
ARM: dts: r8a7745: Use R-Car Gen2 Ether fallback compat string

Use newly added R-Car Gen2 Ether fallback compat string
in the DT of the r8a7745 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
6 years agoARM: dts: r8a7743: Use R-Car Gen2 Ether fallback compat string
Simon Horman [Wed, 18 Oct 2017 07:27:22 +0000 (09:27 +0200)]
ARM: dts: r8a7743: Use R-Car Gen2 Ether fallback compat string

Use newly added R-Car Gen2 Ether fallback compat string
in the DT of the r8a7743 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before considering the fallback compat string.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
6 years agoLinux 4.15-rc1
Linus Torvalds [Mon, 27 Nov 2017 00:01:47 +0000 (16:01 -0800)]
Linux 4.15-rc1

6 years agoMerge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Linus Torvalds [Sun, 26 Nov 2017 23:03:49 +0000 (15:03 -0800)]
Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:

 - LPAE fixes for kernel-readonly regions

 - Fix for get_user_pages_fast on LPAE systems

 - avoid tying decompressor to a particular platform if DEBUG_LL is
   enabled

 - BUG if we attempt to return to userspace but the to-be-restored PSR
   value keeps us in privileged mode (defeating an issue that ftracetest
   found)

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: BUG if jumping to usermode address in kernel mode
  ARM: 8722/1: mm: make STRICT_KERNEL_RWX effective for LPAE
  ARM: 8721/1: mm: dump: check hardware RO bit for LPAE
  ARM: make decompressor debug output user selectable
  ARM: fix get_user_pages_fast

6 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Nov 2017 22:39:20 +0000 (14:39 -0800)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Thomas Glexiner:

 - unbreak the irq trigger type check for legacy platforms

 - a handful fixes for ARM GIC v3/4 interrupt controllers

 - a few trivial fixes all over the place

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq/matrix: Make - vs ?: Precedence explicit
  irqchip/imgpdc: Use resource_size function on resource object
  irqchip/qcom: Fix u32 comparison with value less than zero
  irqchip/exiu: Fix return value check in exiu_init()
  irqchip/gic-v3-its: Remove artificial dependency on PCI
  irqchip/gic-v4: Add forward definition of struct irq_domain_ops
  irqchip/gic-v3: pr_err() strings should end with newlines
  irqchip/s3c24xx: pr_err() strings should end with newlines
  irqchip/gic-v3: Fix ppi-partitions lookup
  irqchip/gic-v4: Clear IRQ_DISABLE_UNLAZY again if mapping fails
  genirq: Track whether the trigger type has been set

6 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Nov 2017 22:11:54 +0000 (14:11 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull misc x86 fixes from Ingo Molnar:
 - topology enumeration fixes
 - KASAN fix
 - two entry fixes (not yet the big series related to KASLR)
 - remove obsolete code
 - instruction decoder fix
 - better /dev/mem sanity checks, hopefully working better this time
 - pkeys fixes
 - two ACPI fixes
 - 5-level paging related fixes
 - UMIP fixes that should make application visible faults more debuggable
 - boot fix for weird virtualization environment

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
  x86/decoder: Add new TEST instruction pattern
  x86/PCI: Remove unused HyperTransport interrupt support
  x86/umip: Fix insn_get_code_seg_params()'s return value
  x86/boot/KASLR: Remove unused variable
  x86/entry/64: Add missing irqflags tracing to native_load_gs_index()
  x86/mm/kasan: Don't use vmemmap_populate() to initialize shadow
  x86/entry/64: Fix entry_SYSCALL_64_after_hwframe() IRQ tracing
  x86/pkeys/selftests: Fix protection keys write() warning
  x86/pkeys/selftests: Rename 'si_pkey' to 'siginfo_pkey'
  x86/mpx/selftests: Fix up weird arrays
  x86/pkeys: Update documentation about availability
  x86/umip: Print a warning into the syslog if UMIP-protected instructions are used
  x86/smpboot: Fix __max_logical_packages estimate
  x86/topology: Avoid wasting 128k for package id array
  perf/x86/intel/uncore: Cache logical pkg id in uncore driver
  x86/acpi: Reduce code duplication in mp_override_legacy_irq()
  x86/acpi: Handle SCI interrupts above legacy space gracefully
  x86/boot: Fix boot failure when SMP MP-table is based at 0
  x86/mm: Limit mmap() of /dev/mem to valid physical addresses
  x86/selftests: Add test for mapping placement for 5-level paging
  ...

6 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Nov 2017 21:43:25 +0000 (13:43 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc fixes: a documentation fix, a Sparse warning fix and a debugging
  fix"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/debug: Fix task state recording/printout
  sched/deadline: Don't use dubious signed bitfields
  sched/deadline: Fix the description of runtime accounting in the documentation

6 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Nov 2017 21:41:48 +0000 (13:41 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Misc fixes: two PMU driver fixes and a memory leak fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Fix memory leak triggered by perf --namespace
  perf/x86/intel/uncore: Add event constraint for BDX PCU
  perf/x86/intel: Hide TSX events when RTM is not supported

6 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Nov 2017 21:36:54 +0000 (13:36 -0800)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull static key fix from Ingo Molnar:
 "Fix a boot warning related to bad init ordering of the static keys
  self-test"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  jump_label: Invoke jump_label_test() via early_initcall()

6 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Nov 2017 21:11:18 +0000 (13:11 -0800)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull objtool fixes from Ingo Molnar:
 "A handful of objtool fixes, most of them related to making the UAPI
  header-syncing warnings easier to read and easier to act upon"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools/headers: Sync objtool UAPI header
  objtool: Fix cross-build
  objtool: Move kernel headers/code sync check to a script
  objtool: Move synced files to their original relative locations
  objtool: Make unreachable annotation inline asms explicitly volatile
  objtool: Add a comment for the unreachable annotation macros

6 years agoARM: BUG if jumping to usermode address in kernel mode
Russell King [Fri, 24 Nov 2017 23:49:34 +0000 (23:49 +0000)]
ARM: BUG if jumping to usermode address in kernel mode

Detect if we are returning to usermode via the normal kernel exit paths
but the saved PSR value indicates that we are in kernel mode.  This
could occur due to corrupted stack state, which has been observed with
"ftracetest".

This ensures that we catch the problem case before we get to user code.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
6 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 25 Nov 2017 18:37:16 +0000 (08:37 -1000)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer updates from Thomas Gleixner:

 - The final conversion of timer wheel timers to timer_setup().

   A few manual conversions and a large coccinelle assisted sweep and
   the removal of the old initialization mechanisms and the related
   code.

 - Remove the now unused VSYSCALL update code

 - Fix permissions of /proc/timer_list. I still need to get rid of that
   file completely

 - Rename a misnomed clocksource function and remove a stale declaration

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
  m68k/macboing: Fix missed timer callback assignment
  treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts
  timer: Remove redundant __setup_timer*() macros
  timer: Pass function down to initialization routines
  timer: Remove unused data arguments from macros
  timer: Switch callback prototype to take struct timer_list * argument
  timer: Pass timer_list pointer to callbacks unconditionally
  Coccinelle: Remove setup_timer.cocci
  timer: Remove setup_*timer() interface
  timer: Remove init_timer() interface
  treewide: setup_timer() -> timer_setup() (2 field)
  treewide: setup_timer() -> timer_setup()
  treewide: init_timer() -> setup_timer()
  treewide: Switch DEFINE_TIMER callbacks to struct timer_list *
  s390: cmm: Convert timers to use timer_setup()
  lightnvm: Convert timers to use timer_setup()
  drivers/net: cris: Convert timers to use timer_setup()
  drm/vc4: Convert timers to use timer_setup()
  block/laptop_mode: Convert timers to use timer_setup()
  net/atm/mpc: Avoid open-coded assignment of timer callback function
  ...

6 years agoMerge tag 'arc-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Linus Torvalds [Sat, 25 Nov 2017 18:21:54 +0000 (08:21 -1000)]
Merge tag 'arc-4.15-rc1' of git://git./linux/kernel/git/vgupta/arc

Pull ARC updates from Vineet Gupta:

 - more changes for HS48 cores: supporting MMUv5, detecting new
   micro-arch gizmos

 - axs10x platform wiring up reset driver merged in this cycle

 - ARC perf driver optimizations

* tag 'arc-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: perf: avoid vmalloc backed mmap
  ARCv2: perf: optimize given that num counters <= 32
  ARCv2: perf: tweak overflow interrupt
  ARC: [plat-axs10x] DTS: Add reset controller node to manage ethernet reset
  ARCv2: boot log: updates for HS48: dual-issue, ECC, Loop Buffer
  ARCv2: Accomodate HS48 MMUv5 by relaxing MMU ver checking
  ARC: [plat-axs10x] auto-select AXS101 or AXS103 given the  ISA config

6 years agoMerge tag 'kbuild-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy...
Linus Torvalds [Sat, 25 Nov 2017 18:06:30 +0000 (08:06 -1000)]
Merge tag 'kbuild-v4.15-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull more Kbuild updates from Masahiro Yamada:

 - use 'pwd' instead of '/bin/pwd' for portability

 - clean up Makefiles

 - fix ld-option for clang

 - fix malloc'ed data size in Kconfig

 - fix parallel building along with coccicheck

 - fix a minor issue of package building

 - prompt to use "rpm-pkg" instead of "rpm"

 - clean up *.i and *.lst patterns by "make clean"

* tag 'kbuild-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: drop $(extra-y) from real-objs-y
  kbuild: clean up *.i and *.lst patterns by make clean
  kbuild: rpm: prompt to use "rpm-pkg" if "rpm" target is used
  kbuild: pkg: use --transform option to prefix paths in tar
  coccinelle: fix parallel build with CHECK=scripts/coccicheck
  kconfig/symbol.c: use correct pointer type argument for sizeof
  kbuild: Set KBUILD_CFLAGS before incl. arch Makefile
  kbuild: remove all dummy assignments to obj-
  kbuild: create built-in.o automatically if parent directory wants it
  kbuild: /bin/pwd -> pwd

6 years agoMerge tag 'afs-fixes-20171124' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowe...
Linus Torvalds [Sat, 25 Nov 2017 17:58:25 +0000 (07:58 -1000)]
Merge tag 'afs-fixes-20171124' of git://git./linux/kernel/git/dhowells/linux-fs

Pull AFS fixes from David Howells:

 - Make AFS file locking work again.

 - Don't write to a page that's being written out, but wait for it to
   complete.

 - Do d_drop() and d_add() in the right places.

 - Put keys on error paths.

 - Remove some redundant code.

* tag 'afs-fixes-20171124' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  afs: remove redundant assignment of dvnode to itself
  afs: cell: Remove unnecessary code in afs_lookup_cell
  afs: Fix signal handling in some file ops
  afs: Fix some dentry handling in dir ops and missing key_puts
  afs: Make afs_write_begin() avoid writing to a page that's being stored
  afs: Fix file locking

6 years agoMerge tag 'kvm-4.15-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 25 Nov 2017 05:44:25 +0000 (19:44 -1000)]
Merge tag 'kvm-4.15-2' of git://git./virt/kvm/kvm

Pull KVM updates from Radim Krčmář:
 "Trimmed second batch of KVM changes for Linux 4.15:

   - GICv4 Support for KVM/ARM

   - re-introduce support for CPUs without virtual NMI (cc stable) and
     allow testing of KVM without virtual NMI on available CPUs

   - fix long-standing performance issues with assigned devices on AMD
     (cc stable)"

* tag 'kvm-4.15-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (30 commits)
  kvm: vmx: Allow disabling virtual NMI support
  kvm: vmx: Reinstate support for CPUs without virtual NMI
  KVM: SVM: obey guest PAT
  KVM: arm/arm64: Don't queue VLPIs on INV/INVALL
  KVM: arm/arm64: Fix GICv4 ITS initialization issues
  KVM: arm/arm64: GICv4: Theory of operations
  KVM: arm/arm64: GICv4: Enable VLPI support
  KVM: arm/arm64: GICv4: Prevent userspace from changing doorbell affinity
  KVM: arm/arm64: GICv4: Prevent a VM using GICv4 from being saved
  KVM: arm/arm64: GICv4: Enable virtual cpuif if VLPIs can be delivered
  KVM: arm/arm64: GICv4: Hook vPE scheduling into vgic flush/sync
  KVM: arm/arm64: GICv4: Use the doorbell interrupt as an unblocking source
  KVM: arm/arm64: GICv4: Add doorbell interrupt handling
  KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint
  KVM: arm/arm64: GICv4: Handle INVALL applied to a vPE
  KVM: arm/arm64: GICv4: Propagate property updates to VLPIs
  KVM: arm/arm64: GICv4: Handle MOVALL applied to a vPE
  KVM: arm/arm64: GICv4: Handle CLEAR applied to a VLPI
  KVM: arm/arm64: GICv4: Propagate affinity changes to the physical ITS
  KVM: arm/arm64: GICv4: Unmap VLPI when freeing an LPI
  ...

6 years agoMerge tag 'powerpc-4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sat, 25 Nov 2017 05:40:12 +0000 (19:40 -1000)]
Merge tag 'powerpc-4.15-2' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "A small batch of fixes, about 50% tagged for stable and the rest for
  recently merged code.

  There's one more fix for the >128T handling on hash. Once a process
  had requested a single mmap above 128T we would then always search
  above 128T. The correct behaviour is to consider the hint address in
  isolation for each mmap request.

  Then a couple of fixes for the IMC PMU, a missing EXPORT_SYMBOL in
  VAS, a fix for STRICT_KERNEL_RWX on 32-bit, and a fix to correctly
  identify P9 DD2.1 but in code that is currently not used by default.

  Thanks to: Aneesh Kumar K.V, Christophe Leroy, Madhavan Srinivasan,
  Sukadev Bhattiprolu"

* tag 'powerpc-4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s: Fix Power9 DD2.1 logic in DT CPU features
  powerpc/perf: Fix IMC_MAX_PMU macro
  powerpc/perf: Fix pmu_count to count only nest imc pmus
  powerpc: Fix boot on BOOK3S_32 with CONFIG_STRICT_KERNEL_RWX
  powerpc/perf/imc: Use cpu_to_node() not topology_physical_package_id()
  powerpc/vas: Export chip_to_vas_id()
  powerpc/64s/slice: Use addr limit when computing slice mask

6 years agoMerge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...
Linus Torvalds [Sat, 25 Nov 2017 05:19:20 +0000 (19:19 -1000)]
Merge branch 'for-next' of git://git./linux/kernel/git/nab/target-pending

Pull SCSI target updates from Nicholas Bellinger:

 "This series is predominantly bug-fixes, with a few small improvements
  that have been outstanding over the last release cycle.

  As usual, the associated bug-fixes have CC' tags for stable.

  Also, things have been particularly quiet wrt new developments the
  last months, with most folks continuing to focus on stability atop 4.x
  stable kernels for their respective production configurations.

  Also at this point, the stable trees have been synced up with
  mainline. This will continue to be a priority, as production users
  tend to run exclusively atop stable kernels, a few releases behind
  mainline.

  The highlights include:

   - Fix PR PREEMPT_AND_ABORT null pointer dereference regression in
     v4.11+ (tangwenji)

   - Fix OOPs during removing TCMU device (Xiubo Li + Zhang Zhuoyu)

   - Add netlink command reply supported option for each device (Kenjiro
     Nakayama)

   - cxgbit: Abort the TCP connection in case of data out timeout (Varun
     Prakash)

   - Fix PR/ALUA file path truncation (David Disseldorp)

   - Fix double se_cmd completion during ->cmd_time_out (Mike Christie)

   - Fix QUEUE_FULL + SCSI task attribute handling in 4.1+ (Bryant Ly +
     nab)

   - Fix quiese during transport_write_pending_qf endless loop (nab)

   - Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK in 3.14+
     (Don White + nab)"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (35 commits)
  tcmu: Add a missing unlock on an error path
  tcmu: Fix some memory corruption
  iscsi-target: Fix non-immediate TMR reference leak
  iscsi-target: Make TASK_REASSIGN use proper se_cmd->cmd_kref
  target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK
  target: Fix quiese during transport_write_pending_qf endless loop
  target: Fix caw_sem leak in transport_generic_request_failure
  target: Fix QUEUE_FULL + SCSI task attribute handling
  iSCSI-target: Use common error handling code in iscsi_decode_text_input()
  target/iscsi: Detect conn_cmd_list corruption early
  target/iscsi: Fix a race condition in iscsit_add_reject_from_cmd()
  target/iscsi: Modify iscsit_do_crypto_hash_buf() prototype
  target/iscsi: Fix endianness in an error message
  target/iscsi: Use min() in iscsit_dump_data_payload() instead of open-coding it
  target/iscsi: Define OFFLOAD_BUF_SIZE once
  target: Inline transport_put_cmd()
  target: Suppress gcc 7 fallthrough warnings
  target: Move a declaration of a global variable into a header file
  tcmu: fix double se_cmd completion
  target: return SAM_STAT_TASK_SET_FULL for TCM_OUT_OF_RESOURCES
  ...

6 years agom68k/macboing: Fix missed timer callback assignment
Kees Cook [Thu, 23 Nov 2017 22:19:02 +0000 (14:19 -0800)]
m68k/macboing: Fix missed timer callback assignment

This fixes a missed function prototype callback from the timer conversions.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20171123221902.GA75727@beast
6 years agoafs: remove redundant assignment of dvnode to itself
Colin Ian King [Mon, 20 Nov 2017 13:58:20 +0000 (13:58 +0000)]
afs: remove redundant assignment of dvnode to itself

The assignment of dvnode to itself is redundant and can be removed.
Cleans up warning detected by cppcheck:

fs/afs/dir.c:975: (warning) Redundant assignment of 'dvnode' to itself.

Fixes: d2ddc776a458 ("afs: Overhaul volume and server record caching and fileserver rotation")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David Howells <dhowells@redhat.com>
6 years agoafs: cell: Remove unnecessary code in afs_lookup_cell
Gustavo A. R. Silva [Fri, 17 Nov 2017 22:40:32 +0000 (16:40 -0600)]
afs: cell: Remove unnecessary code in afs_lookup_cell

Due to recent changes this piece of code is no longer needed.

Addresses-Coverity-ID: 1462033
Link: https://lkml.kernel.org/r/4923.1510957307@warthog.procyon.org.uk
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
6 years agoafs: Fix signal handling in some file ops
David Howells [Mon, 20 Nov 2017 22:41:00 +0000 (22:41 +0000)]
afs: Fix signal handling in some file ops

afs_mkdir(), afs_create(), afs_link() and afs_symlink() all need to drop
the target dentry if a signal causes the operation to be killed immediately
before we try to contact the server.

Signed-off-by: David Howells <dhowells@redhat.com>
6 years agoafs: Fix some dentry handling in dir ops and missing key_puts
David Howells [Mon, 20 Nov 2017 23:04:08 +0000 (23:04 +0000)]
afs: Fix some dentry handling in dir ops and missing key_puts

Fix some of dentry handling in AFS directory ops:

 (1) Do d_drop() on the new_dentry before assigning a new inode to it in
     afs_vnode_new_inode().  It's fine to do this before calling afs_iget()
     because the operation has taken place on the server.

 (2) Replace d_instantiate()/d_rehash() with d_add().

 (3) Don't d_drop() the new_dentry in afs_rename() on error.

Also fix afs_link() and afs_rename() to call key_put() on all error paths
where the key is taken.

Signed-off-by: David Howells <dhowells@redhat.com>
6 years agoafs: Make afs_write_begin() avoid writing to a page that's being stored
David Howells [Sat, 18 Nov 2017 00:13:30 +0000 (00:13 +0000)]
afs: Make afs_write_begin() avoid writing to a page that's being stored

Make afs_write_begin() wait for a page that's marked PG_writeback because:

 (1) We need to avoid interference with the data being stored so that the
     data on the server ends up in a defined state.

 (2) page->private is used to track the window of dirty data within a page,
     but it's also used by the storage code to track what's being written,
     being cleared by the completion notification.  Ownership can't be
     relinquished by the storage code until completion because it a store
     fails, the data must be remarked dirty.

Tracing shows something like the following (edited):

 x86_64-linux-gn-15940 [1] afs_page_dirty: vn=ffff8800bef33800 9c75 begin 0-125
    kworker/u8:3-114   [2] afs_page_dirty: vn=ffff8800bef33800 9c75 store+ 0-125
 x86_64-linux-gn-15940 [1] afs_page_dirty: vn=ffff8800bef33800 9c75 begin 0-2052
    kworker/u8:3-114   [2] afs_page_dirty: vn=ffff8800bef33800 9c75 clear 0-2052
    kworker/u8:3-114   [2] afs_page_dirty: vn=ffff8800bef33800 9c75 store 0-0
    kworker/u8:3-114   [2] afs_page_dirty: vn=ffff8800bef33800 9c75 WARN 0-0

The clear (completion) corresponding to the store+ (store continuation from
a previous page) happens between the second begin (afs_write_begin) and the
store corresponding to that.  This results in the second store not seeing
any data to write back, leading to the following warning:

WARNING: CPU: 2 PID: 114 at ../fs/afs/write.c:403 afs_write_back_from_locked_page+0x19d/0x76c [kafs]
Modules linked in: kafs(E)
CPU: 2 PID: 114 Comm: kworker/u8:3 Tainted: G            E   4.14.0-fscache+ #242
Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014
Workqueue: writeback wb_workfn (flush-afs-2)
task: ffff8800cad72600 task.stack: ffff8800cad44000
RIP: 0010:afs_write_back_from_locked_page+0x19d/0x76c [kafs]
RSP: 0018:ffff8800cad47aa0 EFLAGS: 00010246
RAX: 0000000000000001 RBX: ffff8800bef33a20 RCX: 0000000000000000
RDX: 000000000000000f RSI: ffffffff81c5d0e0 RDI: ffff8800cad72e78
RBP: ffff8800d31ea1e8 R08: ffff8800c1358000 R09: ffff8800ca00e400
R10: ffff8800cad47a38 R11: ffff8800c5d9e400 R12: 0000000000000000
R13: ffffea0002d9df00 R14: ffffffffa0023c1c R15: 0000000000007fdf
FS:  0000000000000000(0000) GS:ffff8800ca700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f85ac6c4000 CR3: 0000000001c10001 CR4: 00000000001606e0
Call Trace:
 ? clear_page_dirty_for_io+0x23a/0x267
 afs_writepages_region+0x1be/0x286 [kafs]
 afs_writepages+0x60/0x127 [kafs]
 do_writepages+0x36/0x70
 __writeback_single_inode+0x12f/0x635
 writeback_sb_inodes+0x2cc/0x452
 __writeback_inodes_wb+0x68/0x9f
 wb_writeback+0x208/0x470
 ? wb_workfn+0x22b/0x565
 wb_workfn+0x22b/0x565
 ? worker_thread+0x230/0x2ac
 process_one_work+0x2cc/0x517
 ? worker_thread+0x230/0x2ac
 worker_thread+0x1d4/0x2ac
 ? rescuer_thread+0x29b/0x29b
 kthread+0x15d/0x165
 ? kthread_create_on_node+0x3f/0x3f
 ? call_usermodehelper_exec_async+0x118/0x11f
 ret_from_fork+0x24/0x30

Signed-off-by: David Howells <dhowells@redhat.com>