The patch below does not apply to the 4.9-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 <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>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: [PATCH] mmc: sdhci: Update the tuning failed messages to pr_debug
level
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>
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 296d955ede59..42a9c8179da7 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2417,8 +2417,8 @@ static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
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 -ETIMEDOUT;
}
