linux-stable.git/drivers/watchdog, branch v3.9.2

watchdog: Revert the AT91RM9200_WATCHDOG dependency

2013-04-14T07:09:10+00:00

Compiling the at91rm9200_wdt.c driver without at91rm9200
support was leading to several errors:

drivers/built-in.o: In function `at91_wdt_close':
at91_adc.c:(.text+0xc9fe4): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91_wdt_write':
at91_adc.c:(.text+0xca004): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91wdt_shutdown':
at91_adc.c:(.text+0xca01c): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91wdt_suspend':
at91_adc.c:(.text+0xca038): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91_wdt_open':
at91_adc.c:(.text+0xca0cc): undefined reference to `at91_st_base'
drivers/built-in.o:at91_adc.c:(.text+0xca2c8): more undefined references to
`at91_st_base' follow

So, reverting the modification of the "depends" Kconfig line
introduced by patch a6a1bcd37 (watchdog: at91rm9200: add DT support)
seems to be the good solution.

Signed-off-by: Nicolas Ferre 
Acked-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: sp5100_tco: Set the AcpiMmioSel bitmask value to 1 instead of 2

2013-03-22T22:21:55+00:00

The AcpiMmioSel bit is bit 1 in the AcpiMmioEn register, but the current
sp5100_tco driver is using bit 2.

See 2.3.3 Power Management (PM) Registers page 150 of the
AMD SB800-Series Southbridges Register Reference Guide [1].

        AcpiMmioEn - RW – 8/16/32 bits - [PM_Reg: 24h]
        Field Name        Bits  Default  Description
        AcpiMMioDecodeEn  0     0b       Set to 1 to enable AcpiMMio space.
        AcpiMMIoSel       1     0b       Set AcpiMMio registers to be memory-mapped or IO-mapped space.
                                         0: Memory-mapped space
                                         1: I/O-mapped space

The sp5100_tco driver expects zero as a value of AcpiMmioSel (bit 1).

Fortunately, no problems were caused by this typo, because the default
value of the undocumented misused bit 2 seems to be zero.

However, the sp5100_tco driver should use the correct bitmask value.

[1] http://support.amd.com/us/Embedded_TechDocs/45482.pdf

Signed-off-by: Takahisa Tanaka 
Signed-off-by: Paul Menzel 
Signed-off-by: Wim Van Sebroeck 
Cc: stable

watchdog: sp5100_tco: Remove code that may cause a boot failure

2013-03-22T22:21:47+00:00

A problem was found on PC's with the SB700 chipset: The PC fails to
load BIOS after running the 3.8.x kernel until the power is completely
cut off. It occurs in all 3.8.x versions and the mainline version as of
2/4. The issue does not occur with the 3.7.x builds.

There are two methods for accessing the watchdog registers.

 1. Re-programming a resource address obtained by allocate_resource()
to chipset.
 2. Use the direct memory-mapped IO access.

The method 1 can be used by all the chipsets (SP5100, SB7x0, SB8x0 or
later). However, experience shows that only PC with the SB8x0 (or
later) chipsets can use the method 2.

This patch removes the method 1, because the critical problem was found.
That's why the watchdog timer was able to be used on SP5100 and SB7x0
chipsets until now.

Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1116835
Link: https://lkml.org/lkml/2013/2/14/271

Signed-off-by: Takahisa Tanaka 
Signed-off-by: Wim Van Sebroeck 
Cc: stable

watchdog: sp805_wdt depends on ARM

2013-03-01T11:56:26+00:00

The SP805 driver is only used by the Spear machines, and uses
writel_relaxed, which is not available on all architectures.

The dependency from CONFIG_ARM avoids compilation problems under
randomconfig when CONFIG_ARM_AMBA is enabled for x86 builds.

Signed-off-by: Alessandro Rubini 
Acked-by: Giancarlo Asnaghi 
Signed-off-by: Davide Ciminaghi 
Acked-by: Linus Walleij 
Acked-by: Viresh Kumar 
Signed-off-by: H. Peter Anvin 
Signed-off-by: Wim Van Sebroeck

watchdog: davinci_wdt: update to devm_* API

2013-03-01T11:56:18+00:00

Update the code to use devm_* API so that driver
core will manage resources.

Signed-off-by: Kumar, Anil 
Signed-off-by: Wim Van Sebroeck

watchdog: davinci_wdt: use devm managed clk get

2013-03-01T11:56:14+00:00

Get the clock using devm_clk_get().

Signed-off-by: Mrugesh Katepallewar 
Signed-off-by: Wim Van Sebroeck

watchdog: at91rm9200: add DT support

2013-03-01T11:55:27+00:00

Add DT support for at91rm9200_wdt.

Signed-off-by: Joachim Eastwood 
Signed-off-by: Wim Van Sebroeck

watchdog: add timeout-sec property binding

2013-03-01T11:53:45+00:00

this patchset add the timeout-sec property to the following drivers:
orion_wdt, pnx4008_wdt, s3c2410_wdt and at91sam9_wdt.

The at91sam9_wdt is tested on evk-pr3,
the other drivers are compile tested only.

Signed-off-by: Fabio Porcedda 
Cc: Andrew Lunn 
Cc: Jason Cooper 
Cc: Wolfram Sang 
Cc: Masanari Iida 
Cc: Ben Dooks 
Cc: Kukjin Kim 
Cc: Andrew Victor 
Cc: Jean-Christophe PLAGNIOL-VILLARD 
Cc: Nicolas Ferre 
Signed-off-by: Wim Van Sebroeck

watchdog: at91sam9_wdt: Convert to use the watchdog framework

2013-03-01T11:49:53+00:00

According to Documentation/watchdog/convert_drivers_to_kernel_api.txt,
remove the file_operations struct, miscdevice, and obsolete includes

Since the at91sam watchdog inherent characteristics, add the watchdog
operations: at91wdt_start, at91wdt_stop and at91wdt_ping.

Signed-off-by: Wenyou Yang 
Signed-off-by: Wim Van Sebroeck 
Cc: linux-watchdog@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

watchdog: omap_wdt: Add option nowayout

2013-03-01T11:49:02+00:00

Like other watchdog drivers, this patch adds new option nowayout
which overwrite WATCHDOG_NOWAYOUT.

Signed-off-by: Pali Rohar 
Signed-off-by: Wim Van Sebroeck