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| author | Lee Jones <lee.jones@linaro.org> | 2013-05-16 13:15:35 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-05-27 14:08:20 +0200 |
| commit | 2c06897e4597b1cd68ef29e4145917a751c2b4cd (patch) | |
| tree | bde8a6f158143effaaaea6970f6d5b0e1cb54cb6 | |
| parent | Linux 3.10-rc3 (diff) | |
| download | linux-2c06897e4597b1cd68ef29e4145917a751c2b4cd.tar.xz linux-2c06897e4597b1cd68ef29e4145917a751c2b4cd.zip | |
ARM: ux500: Only configure wake-up reasons on ux500 based platforms
Multiplatform calls all enabled platforms' initcalls. In the
ux500_idle_init() initcall we call into the DBx500-PRCMU which in turn
executes some ux500 specific register reads/writes. When running on
some !ux500 platforms this ends up causing a kernel Oops. This patch
ensures the PRCMU call is only invoked when running on ux500 based
platforms.
Reported-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| -rw-r--r-- | arch/arm/mach-ux500/cpuidle.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/cpuidle.c b/arch/arm/mach-ux500/cpuidle.c index 317a2be129fb..a45dd09daed9 100644 --- a/arch/arm/mach-ux500/cpuidle.c +++ b/arch/arm/mach-ux500/cpuidle.c @@ -21,6 +21,7 @@ #include <asm/proc-fns.h> #include "db8500-regs.h" +#include "id.h" static atomic_t master = ATOMIC_INIT(0); static DEFINE_SPINLOCK(master_lock); @@ -114,6 +115,9 @@ static struct cpuidle_driver ux500_idle_driver = { int __init ux500_idle_init(void) { + if (!(cpu_is_u8500_family() || cpu_is_ux540_family())) + return -ENODEV; + /* Configure wake up reasons */ prcmu_enable_wakeups(PRCMU_WAKEUP(ARM) | PRCMU_WAKEUP(RTC) | PRCMU_WAKEUP(ABB)); |