mmc: renesas_sdhi: abort tuning when timeout detected

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: 4f11997 ("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]>

Author: Wolfram Sang

drivers/mmc/host/renesas_sdhi_core.c

@@ -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);