This is a note to let you know that I've just added the patch titled mmc: renesas_sdhi: abort tuning when timeout detected to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mmc-renesas_sdhi-abort-tuning-when-timeout-detected.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 2c9017d0b5d3fbf17e69577a42d9e610ca122810 Mon Sep 17 00:00:00 2001 From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Date: Wed, 2 Jun 2021 09:34:35 +0200 Subject: mmc: renesas_sdhi: abort tuning when timeout detected MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> commit 2c9017d0b5d3fbf17e69577a42d9e610ca122810 upstream. 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: 4f11997773b6 ("mmc: tmio: Add tuning support") Reported-by Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> Link: https://lore.kernel.org/r/20210602073435.5955-1-wsa+renesas@xxxxxxxxxxxxxxxxxxxx Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/mmc/host/renesas_sdhi_core.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -660,14 +660,19 @@ static int renesas_sdhi_execute_tuning(s /* 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); Patches currently in stable-queue which might be from wsa+renesas@xxxxxxxxxxxxxxxxxxxx are queue-5.10/mmc-renesas_sdhi-abort-tuning-when-timeout-detected.patch queue-5.10/mmc-renesas_sdhi-fix-hs400-on-r-car-m3-w.patch