AuxXxilium/linux_dsm_epyc7002
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mmc: mediatek: fix controller busy when plug out SD

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when plug out SD card, may get data CRC error, the MMC core will issue
CMD13 to get card status, then CMD13 timeout(due to card plug out) will
trigger CMD19 tuning, first CMD19 timeout has not call msdc_reset_hw()
and cause the next CMD19 gets controller busy.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Chaotian Jing 2019-08-22 14:47:40 +08:00 committed by Ulf Hansson
parent bb716606ff
commit da6e0f7024
1 changed files with 5 additions and 3 deletions
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8
drivers/mmc/host/mtk-sd.c
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@ -1071,11 +1071,13 @@ static bool msdc_cmd_done(struct msdc_host *host, int events,
}
if (!sbc_error && !(events & MSDC_INT_CMDRDY)) {
if (cmd->opcode != MMC_SEND_TUNING_BLOCK &&
cmd->opcode != MMC_SEND_TUNING_BLOCK_HS200)
if (events & MSDC_INT_CMDTMO ||
(cmd->opcode != MMC_SEND_TUNING_BLOCK &&
cmd->opcode != MMC_SEND_TUNING_BLOCK_HS200))
/*
* should not clear fifo/interrupt as the tune data
* may have alreay come.
* may have alreay come when cmd19/cmd21 gets response
* CRC error.
*/
msdc_reset_hw(host);
if (events & MSDC_INT_RSPCRCERR) {