From: Yang Xiwen <forbidden405@outlook.com>
Date: Thu, 1 Feb 2024 14:05:43 +0000 (+0800)
Subject: mmc: dw_mmc: Don't return error if data busy timeout
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=1fa6dc2879899a42ba85d4ece617c2356d048308;p=u-boot.git

mmc: dw_mmc: Don't return error if data busy timeout

As described in [1], some poor hardware or cards would fail to release
the bus and keep driving data lines low. Ignore it and send the next cmd
directly seems okay for most cases.

[1]: https://patchwork.kernel.org/project/linux-mmc/patch/1424458179-5456-1-git-send-email-dianders@chromium.org/

Signed-off-by: Yang Xiwen <forbidden405@outlook.com>
Tested-by: Jaehoon Chung <jh80.chung@samsung.com>
---

diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c
index 400066fa99..e103664145 100644
--- a/drivers/mmc/dw_mmc.c
+++ b/drivers/mmc/dw_mmc.c
@@ -262,8 +262,8 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
 
 	while (dwmci_readl(host, DWMCI_STATUS) & DWMCI_BUSY) {
 		if (get_timer(start) > timeout) {
-			debug("%s: Timeout on data busy\n", __func__);
-			return -ETIMEDOUT;
+			debug("%s: Timeout on data busy, continue anyway\n", __func__);
+			break;
 		}
 	}