This is a note to let you know that I've just added the patch titled mmc: sdhci: Update the tuning failed messages to pr_debug level to the 4.19-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-sdhci-update-the-tuning-failed-messages-to-pr_debug-level.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 2c92dd20304f505b6ef43d206fff21bda8f1f0ae Mon Sep 17 00:00:00 2001 From: Faiz Abbas <faiz_abbas@xxxxxx> Date: Fri, 6 Dec 2019 17:13:26 +0530 Subject: mmc: sdhci: Update the tuning failed messages to pr_debug level From: Faiz Abbas <faiz_abbas@xxxxxx> commit 2c92dd20304f505b6ef43d206fff21bda8f1f0ae upstream. Tuning support in DDR50 speed mode was added in SD Specifications Part1 Physical Layer Specification v3.01. Its not possible to distinguish between v3.00 and v3.01 from the SCR and that is why since commit 4324f6de6d2e ("mmc: core: enable CMD19 tuning for DDR50 mode") tuning failures are ignored in DDR50 speed mode. Cards compatible with v3.00 don't respond to CMD19 in DDR50 and this error gets printed during enumeration and also if retune is triggered at any time during operation. Update the printk level to pr_debug so that these errors don't lead to false error reports. Signed-off-by: Faiz Abbas <faiz_abbas@xxxxxx> Cc: stable@xxxxxxxxxxxxxxx # v4.4+ Link: https://lore.kernel.org/r/20191206114326.15856-1-faiz_abbas@xxxxxx Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/mmc/host/sdhci.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2244,8 +2244,8 @@ static void __sdhci_execute_tuning(struc sdhci_send_tuning(host, opcode); if (!host->tuning_done) { - pr_info("%s: Tuning timeout, falling back to fixed sampling clock\n", - mmc_hostname(host->mmc)); + pr_debug("%s: Tuning timeout, falling back to fixed sampling clock\n", + mmc_hostname(host->mmc)); sdhci_abort_tuning(host, opcode); return; } Patches currently in stable-queue which might be from faiz_abbas@xxxxxx are queue-4.19/revert-mmc-sdhci-fix-incorrect-switch-to-hs-mode.patch queue-4.19/mmc-sdhci-update-the-tuning-failed-messages-to-pr_debug-level.patch