kernel/sys.c: call disable_nonboot_cpus() in kernel_restart()
authorShawn Guo <shawn.guo@linaro.org>
Fri, 5 Oct 2012 00:12:23 +0000 (17:12 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 5 Oct 2012 18:04:47 +0000 (03:04 +0900)
commitf96972f2dc6365421cf2366ebd61ee4cf060c8d5
tree8a8aa56a74371a8b39f55184631ea34030a147a4
parent9f6547a3209b78689ab8183630df87ca5e13fec0
kernel/sys.c: call disable_nonboot_cpus() in kernel_restart()

As kernel_power_off() calls disable_nonboot_cpus(), we may also want to
have kernel_restart() call disable_nonboot_cpus().  Doing so can help
machines that require boot cpu be the last alive cpu during reboot to
survive with kernel restart.

This fixes one reboot issue seen on imx6q (Cortex-A9 Quad).  The machine
requires that the restart routine be run on the primary cpu rather than
secondary ones.  Otherwise, the secondary core running the restart
routine will fail to come to online after reboot.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/sys.c