diff mbox series

mmc: mediatek: add wait dma stop done flow

Message ID 20210806023055.29524-1-derong.liu@mediatek.com
State Superseded
Headers show
Series mmc: mediatek: add wait dma stop done flow | expand

Commit Message

Derong Liu Aug. 6, 2021, 2:30 a.m. UTC 
From: mtk13858 <derong.liu@mediatek.com>

it needs to wait for dma stop done after set dma stop.

Signed-off-by: mtk13858 <derong.liu@mediatek.com>
---
 drivers/mmc/host/mtk-sd.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 4dfc246c5f95..1dfd2842471b 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -2339,6 +2339,8 @@  static void msdc_cqe_disable(struct mmc_host *mmc, bool recovery)
 	if (recovery) {
 		sdr_set_field(host->base + MSDC_DMA_CTRL,
 			      MSDC_DMA_CTRL_STOP, 1);
+		while (readl(host->base + MSDC_DMA_CFG) & MSDC_DMA_CFG_STS)
+			cpu_relax();
 		msdc_reset_hw(host);
 	}
 }