[PATCH V2 2/2] mmc: mediatek: fix SDIO IRQ detection issue

Jjian Zhou jjian.zhou at mediatek.com
Mon Jun 17 04:04:08 PDT 2019

From: jjian zhou <jjian.zhou at mediatek.com>

If cmd19 timeout or response crcerr occurs during execute_tuning(),
it need invoke msdc_reset_hw(). Otherwise SDIO IRQ can't be detected.

Signed-off-by: jjian zhou <jjian.zhou at mediatek.com>
Signed-off-by: Chaotian Jing <chaotian.jing at mediatek.com>
Signed-off-by: Yong Mao <yong.mao at mediatek.com>
 drivers/mmc/host/mtk-sd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index fa7d420..ba1ad5e 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -1031,6 +1031,8 @@ static void msdc_request_done(struct msdc_host *host, struct mmc_request *mrq)
 	msdc_track_cmd_data(host, mrq->cmd, mrq->data);
 	if (mrq->data)
 		msdc_unprepare_data(host, mrq);
+	if (host->error)
+		msdc_reset_hw(host);
 	mmc_request_done(host->mmc, mrq);


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