This is a note to let you know that I've just added the patch titled

watchdog: indydog: Add dependency on SGI_HAS_INDYDOG

to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: watchdog-indydog-add-dependency-on-sgi_has_indydog.patch and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 24f8d233074badd4c18e4dafd2fb97d65838afed Mon Sep 17 00:00:00 2001

From: Matt Redfearn matt.redfearn@mips.com Date: Tue, 14 Nov 2017 10:52:54 +0000 Subject: watchdog: indydog: Add dependency on SGI_HAS_INDYDOG

From: Matt Redfearn matt.redfearn@mips.com

commit 24f8d233074badd4c18e4dafd2fb97d65838afed upstream.

Commit da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") enabled building the Indy watchdog driver when COMPILE_TEST is enabled. However, the driver makes reference to symbols that are only defined for certain platforms are selected in the config. These platforms select SGI_HAS_INDYDOG. Without this, link time errors result, for example when building a MIPS allyesconfig.

drivers/watchdog/indydog.o: In function `indydog_write': indydog.c:(.text+0x18): undefined reference to `sgimc' indydog.c:(.text+0x1c): undefined reference to `sgimc' drivers/watchdog/indydog.o: In function `indydog_start': indydog.c:(.text+0x54): undefined reference to `sgimc' indydog.c:(.text+0x58): undefined reference to `sgimc' drivers/watchdog/indydog.o: In function `indydog_stop': indydog.c:(.text+0xa4): undefined reference to `sgimc' drivers/watchdog/indydog.o:indydog.c:(.text+0xa8): more undefined references to `sgimc' follow make: *** [Makefile:1005: vmlinux] Error 1

Fix this by ensuring that CONFIG_INDIDOG can only be selected when the necessary dependent platform symbols are built in.

Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Matt Redfearn matt.redfearn@mips.com Signed-off-by: Ralf Baechle ralf@linux-mips.org Suggested-by: James Hogan james.hogan@mips.com Reviewed-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Wim Van Sebroeck wim@iguana.be Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/watchdog/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -1451,7 +1451,7 @@ config RC32434_WDT

config INDYDOG tristate "Indy/I2 Hardware Watchdog" - depends on SGI_HAS_INDYDOG || (MIPS && COMPILE_TEST) + depends on SGI_HAS_INDYDOG help Hardware driver for the Indy's/I2's watchdog. This is a watchdog timer that will reboot the machine after a 60 second

Patches currently in stable-queue which might be from matt.redfearn@mips.com are

queue-4.15/watchdog-indydog-add-dependency-on-sgi_has_indydog.patch