From: sboyd@codeaurora.org (Stephen Boyd)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: EXYNOS: Don't use LDREX and STREX after disabling cache coherency
Date: Tue, 17 Feb 2015 14:24:51 -0800 [thread overview]
Message-ID: <54E3BFB3.5030801@codeaurora.org> (raw)
In-Reply-To: <1424093802-5488-1-git-send-email-k.kozlowski@samsung.com>
On 02/16/15 05:36, Krzysztof Kozlowski wrote:
> 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 <k.kozlowski@samsung.com>
> Fixes: adc548d77c22 ("ARM: EXYNOS: Use MCPM call-backs to support S2R on exynos5420")
> Cc: <stable@vger.kernel.org>
> Reported-by: Stephen Boyd <sboyd@codeaurora.org>
> ---
Looks good to me.
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2015-02-17 22:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-16 13:36 [PATCH] ARM: EXYNOS: Don't use LDREX and STREX after disabling cache coherency Krzysztof Kozlowski
2015-02-17 22:24 ` Stephen Boyd [this message]
2015-02-26 20:52 ` Kukjin Kim
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