Thread (3 messages) 3 messages, 3 authors, 2015-02-26

[PATCH] ARM: EXYNOS: Don't use LDREX and STREX after disabling cache coherency

From: kgene@kernel.org (Kukjin Kim)
Date: 2015-02-26 20:53:01
Also in: linux-samsung-soc, lkml, stable

On 02/18/15 07:24, Stephen Boyd wrote:
On 02/16/15 05:36, Krzysztof Kozlowski wrote:
quoted
During CPU shutdown the exynos_cpu_power_down() is called after
disabling cache coherency and it uses LDREX and STREX instructions (by
calling of_machine_is_compatible() -> kobject_get() -> kref_get()).

The LDREX and STREX should not be used after disabling the cache
coherency so just use soc_is_exynos().

Signed-off-by: Krzysztof Kozlowski <redacted>
Fixes: adc548d77c22 ("ARM: EXYNOS: Use MCPM call-backs to support S2R on exynos5420")
Cc: <redacted>
Reported-by: Stephen Boyd <redacted>
---
Looks good to me.

Reviewed-by: Stephen Boyd <redacted>
Thanks for this fix, applied.

- Kukjin
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