On Fri, January 17, 2014, Kevin Hilman wrote:

Zhangfei Gao [off-list ref] writes:

quoted

Introduced from commit bf626e5550f24aec24975a0e85ad8e572ca76a6b
CDETECT is ignored since negated return value of mmc_gpio_get_cd(mmc)
can not be checked by IS_ERR_VALUE.
Add spin_lock_bh(&host->lock) for atomic accessing DW_MMC_CARD_PRESENT,
otherwise sd detect may occasionally fail.

Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Reported-by: Kevin Hilman <redacted>
Reviewed-by: Sachin Kamat <redacted>
Tested-by: Sachin Kamat <redacted>

I didn't look at the patch in detail, but can at least confirm that
Arndale boots again in -next with this patch applied.

Tested-by: Kevin Hilman <redacted>

Acked-by: Seungwon Jeon <redacted>

Thanks,
Seungwon Jeon