linux-kernel - [PATCH 2/2] mmc: mediatek: fix SDIO IRQ detection issue

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Date:   Fri, 14 Jun 2019 13:26:10 +0800
From:   Jjian Zhou <jjian.zhou@...iatek.com>
To:     <ulf.hansson@...aro.org>, <chaotian.jing@...iatek.com>,
        <matthias.bgg@...il.com>, <linux-mmc@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
CC:     <yong.mao@...iatek.com>, <srv_heupstream@...iatek.com>,
        jjian zhou <jjian.zhou@...iatek.com>
Subject: [PATCH 2/2] mmc: mediatek: fix SDIO IRQ detection issue

From: jjian zhou <jjian.zhou@...iatek.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@...iatek.com>
Signed-off-by: Chaotian Jing <chaotian.jing@...iatek.com>
Signed-off-by: Yong Mao <yong.mao@...iatek.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 29992ae..df8f09d 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);
 }

--
1.9.1