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| author |   Leela Krishna Amudala <leela.krishna@linaro.org> | 2014-05-28 00:43:21 +0900 |
|---|---|---|
| committer |   Kukjin Kim <kgene.kim@samsung.com> | 2014-06-17 00:23:28 +0900 |
| commit | b92ad209c26a1891c4e04cd75fc771dcb002603f (patch) | |
| tree | 8d8df78d3b94d1b8d3a833c729852a6042d32e12 /arch/arm/mach-exynos | |
| parent | Linux 3.16-rc1 (diff) | |
| download | linux-dev-b92ad209c26a1891c4e04cd75fc771dcb002603f.tar.xz linux-dev-b92ad209c26a1891c4e04cd75fc771dcb002603f.zip | |
ARM: EXYNOS: Use wfi macro in platform_do_lowpower
This patch is originally based on commit b3377d186572 ("ARM: 7064/1:
vexpress: Use wfi macro in platform_do_lowpower.")
Current Exynos CPU hotplug code includes a hardcoded WFI instruction,
in ARM encoding. When the kernel is compiled in Thumb-2 mode, this
is invalid and causes the machine to hang hard when a CPU is offlined.
Use wfi macro instead of the hardcoded WFI instruction.
Signed-off-by: Leela Krishna Amudala <leela.krishna@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-exynos')
| -rw-r--r-- | arch/arm/mach-exynos/hotplug.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/arch/arm/mach-exynos/hotplug.c b/arch/arm/mach-exynos/hotplug.c index 69fa48397394..8a134d019cb3 100644 --- a/arch/arm/mach-exynos/hotplug.c +++ b/arch/arm/mach-exynos/hotplug.c @@ -46,13 +46,7 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious) if (cpu == 1) exynos_cpu_power_down(cpu); - /* - * here's the WFI - */ - asm(".word 0xe320f003\n" - : - : - : "memory", "cc"); + wfi(); if (pen_release == cpu_logical_map(cpu)) { /* |