FAILED: patch "[PATCH] mmc: renesas_sdhi: abort tuning when timeout detected" failed to apply to 4.19-stable tree

The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 2c9017d0b5d3fbf17e69577a42d9e610ca122810 Mon Sep 17 00:00:00 2001
From: Wolfram Sang <[email protected]>
Date: Wed, 2 Jun 2021 09:34:35 +0200
Subject: [PATCH] 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().

Reported-by Yoshihiro Shimoda <[email protected]>

index 635bf31a6735..9029308c4a0f 100644
@@ -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);