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

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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>
This commit is contained in:
Yang Xiwen 2024-02-01 22:05:43 +08:00 committed by Jaehoon Chung
parent 4685d6fbe4
commit 1fa6dc2879
1 changed files with 2 additions and 2 deletions
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4
drivers/mmc/dw_mmc.c
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@ -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;
}
}