Re: [RFC PATCH v2] ARM: OMAP4/highbank: Flush L2 cache before disabling

On Friday 04 October 2013 04:57 PM, Taras Kondratiuk wrote:

Kexec disables outer cache before jumping to reboot code, but it doesn't flush it explicitly. Flush is done implicitly inside of l2x0_disable(). But some SoC's override default .disable handler and don't flush cache. This may lead to a corrupted memory during Kexec reboot on these platforms.

This patch adds cache flush inside of OMAP4 and Highbank outer_cache.disable() handlers to make it consistent with default l2x0_disable(). Also it removes redundant outer_flush_all() call just before outer_disable().

Signed-off-by: Taras Kondratiuk taras.kondratiuk@linaro.org

v2: Make the fix specific to platforms that don't use l2x0_disable(). v1: https://patchwork.kernel.org/patch/2974431/

---

Acked-by: Santosh Shilimkar santosh.shilimkar@ti.com