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mmc: renesas_sdhi: abort tuning when timeout detected

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We have to bring the eMMC from sending-data state back to transfer state
once we detected a CRC error (timeout) during tuning. So, send a stop
command via mmc_abort_tuning().

Fixes: 4f11997773 ("mmc: tmio: Add tuning support")
Reported-by Yoshihiro Shimoda <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
Reviewed-by: Niklas Söderlund <[email protected]>
Reviewed-by: Yoshihiro Shimoda <[email protected]>
Tested-by: Yoshihiro Shimoda <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Cc: [email protected]
Signed-off-by: Ulf Hansson <[email protected]>
This commit is contained in:
Wolfram Sang authored and Ulf Hansson committed 2021-06-08 14:34:27 +02:00
1 parent c4681547bc
commit 2c9017d0b5
1 file changed
+6 -1
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drivers/mmc/host/renesas_sdhi_core.c
+6 -1
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@@ -692,14 +692,19 @@ static int renesas_sdhi_execute_tuning(struct mmc_host *mmc, u32 opcode)
/* Issue CMD19 twice for each tap */
for (i = 0; i < 2 * priv->tap_num; i++) {
int cmd_error;
/* Set sampling clock position */
sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_TAPSET, i % priv->tap_num);
if (mmc_send_tuning(mmc, opcode, NULL) == 0)
if (mmc_send_tuning(mmc, opcode, &cmd_error) == 0)
set_bit(i, priv->taps);
if (sd_scc_read32(host, priv, SH_MOBILE_SDHI_SCC_SMPCMP) == 0)
set_bit(i, priv->smpcmp);
if (cmd_error)
mmc_abort_tuning(mmc, opcode);
}
ret = renesas_sdhi_select_tuning(host);