tree e39393572c85170eaa3d3b5920c6a8c2386fc418
parent d4a384cb563e555ce00255f5f496b503e6cc6358
author yong mao <yong.mao@mediatek.com> 1585299097 +0800
committer Ulf Hansson <ulf.hansson@linaro.org> 1585311690 +0100

mmc: mediatek: fix SDIO irq issue

SDIO irq is not triggered by low level, but by falling edge in our
previous IC. This mechanism only have one chance to catch the SDIO irq
if a SDIO irq comes within the multiple block transmission. This SDIO
irq may be easily lost, because falling edge appears only once within 2
clock after data transmission is completed.

SDIO irq recheck mechanism will make sure all irqs can be
processed correctly.

Signed-off-by: Yong Mao <yong.mao@mediatek.com>
Link: https://lore.kernel.org/r/1585299097-6897-2-git-send-email-yong.mao@mediatek.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>