| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 100/130] mmc: sdio: Fix invalid vdd in voltage switch power cycle | Date | Tue, 01 Mar 2016 23:53:32 +0000 |
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3.14-stable review patch. If anyone has any objections, please let me know.
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From: Adrian Hunter <adrian.hunter@intel.com>
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@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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);
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