[PATCH] mmc: dw_mmc: Fixes timeout issue for FIFO mode

[hmz007]

Clearing the DTO interrupt should be unnecessary, and it would
potentially result in never receiving this interrupt again.

Do power-on or reset from uboot for a while can reproduce the issue:
  dwmci_data_transfer: Timeout waiting for data!
  mmc_load_image_raw_sector: mmc block read error

Tested on NanoPi R4S with SanDisk Extreme PRO 32GB.

Fixes: 8cb9d3ed3a ("mmc: dw_mmc: Fixes data read when receiving DTO interrupt in FIFO mode")
Signed-off-by: hmz007 <hmz007 at gmail.com>
---
 drivers/mmc/dw_mmc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c
index a949dad574..8fa26b340b 100644
--- a/drivers/mmc/dw_mmc.c
+++ b/drivers/mmc/dw_mmc.c
@@ -168,7 +168,7 @@ static int dwmci_data_transfer(struct dwmci_host *host, struct mmc_data *data)
 			if (data->flags == MMC_DATA_READ &&
 			    (mask & (DWMCI_INTMSK_RXDR | DWMCI_INTMSK_DTO))) {
 				dwmci_writel(host, DWMCI_RINTSTS,
-					     DWMCI_INTMSK_RXDR | DWMCI_INTMSK_DTO);
+					     DWMCI_INTMSK_RXDR);
 				while (size) {
 					ret = dwmci_fifo_ready(host,
 							DWMCI_FIFO_EMPTY,
-- 
2.34.1