[PATCH] mmc: sdhci: request irq after sdhci_init() is called

[Chris Ball]

Hi Shawn,

On Fri, Jul 05 2013, Shawn Guo wrote:
> Generally request_irq() should be called after hardware has been
> initialized into a sane state.  However, sdhci driver currently calls
> request_irq() before sdhci_init().  At least, the following kernel panic
> seen on i.MX6 is caused by that.  The sdhci controller on i.MX6 may have
> noisy glitch on DAT1 line, which will trigger SDIO interrupt handling
> once request_irq() is called.  But at this point, the SDIO interrupt
> handler host->sdio_irq_thread has not been registered yet.  Thus, we
> see the NULL pointer access with wake_up_process(host->sdio_irq_thread)
> in mmc_signal_sdio_irq().

Thanks, pushed to mmc-next for 3.12.

- Chris.
-- 
Chris Ball   <cjb at laptop.org>   <http://printf.net/>