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

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   [off-list ref]   <http://printf.net/>