[PATCH V2 1/2] mmc: sdhci-esdhc-imx: fix access hardirq-unsafe lock in atomic context

[Chris Ball]

Hi,

On Thu, Dec 26 2013, Dong Aisheng wrote:
> Sometimes we may meet the following lockdep issue.
> The root cause is .set_clock callback is executed with spin_lock_irqsave
> in sdhci_do_set_ios. However, the IMX set_clock callback will try to access
> clk_get_rate which is using a mutex lock.
>
> The fix avoids access mutex in .set_clock callback by initializing the
> pltfm_host->clock at probe time and use it later instead of calling
> clk_get_rate again in atomic context.
>
> [ INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected ]

Thanks, pushed to mmc-next.

- Chris.
-- 
Chris Ball   <chris at printf.net>   <http://printf.net/>