This is a note to let you know that I've just added the patch titled
mmc: sdio: Fix invalid vdd in voltage switch power cycle
to the 3.14-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-sdio-fix-invalid-vdd-in-voltage-switch-power-cycle.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d9bfbb95ed598a09cf336adb0f190ee0ff802f0d Mon Sep 17 00:00:00 2001
From: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Date: Thu, 26 Nov 2015 14:00:47 +0200
Subject: mmc: sdio: Fix invalid vdd in voltage switch power cycle
From: Adrian Hunter <adrian.hunter@xxxxxxxxx>
commit d9bfbb95ed598a09cf336adb0f190ee0ff802f0d upstream.
The 'ocr' parameter passed to mmc_set_signal_voltage()
defines the power-on voltage used when power cycling
after a failure to set the voltage. However, in the
case of mmc_sdio_init_card(), the value passed has the
R4_18V_PRESENT flag set which is not valid for power-on
and results in an invalid vdd. Fix by passing the card's
ocr value which does not have the flag.
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/core/sdio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -670,7 +670,7 @@ try_again:
*/
if (!powered_resume && (rocr & ocr & R4_18V_PRESENT)) {
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180,
- ocr);
+ ocr_card);
if (err == -EAGAIN) {
sdio_reset(host);
mmc_go_idle(host);
Patches currently in stable-queue which might be from adrian.hunter@xxxxxxxxx are
queue-3.14/mmc-sdio-fix-invalid-vdd-in-voltage-switch-power-cycle.patch
queue-3.14/mmc-sdhci-fix-sdhci_runtime_pm_bus_on-off.patch
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