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 400066f..e103664 100644
--- a/drivers/mmc/dw_mmc.c
+++ b/drivers/mmc/dw_mmc.c
@@ -262,8 +262,8 @@
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;
}
}