linux-kernel - [PATCH 5.1 005/121] mmc: mediatek: fix SDIO IRQ detection issue

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Date:   Mon, 24 Jun 2019 17:55:37 +0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, jjian zhou <jjian.zhou@...iatek.com>,
        Chaotian Jing <chaotian.jing@...iatek.com>,
        Yong Mao <yong.mao@...iatek.com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH 5.1 005/121] mmc: mediatek: fix SDIO IRQ detection issue

From: jjian zhou <jjian.zhou@...iatek.com>

commit 20314ce30af197963b0c239f0952db6aaef73f99 upstream.

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>
Fixes: 5215b2e952f3 ("mmc: mediatek: Add MMC_CAP_SDIO_IRQ support")
Cc: stable@...r.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mmc/host/mtk-sd.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -1003,6 +1003,8 @@ static void msdc_request_done(struct msd
 	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);
 }