mmc: core: Fix select power class after resume

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Use the saved values in card->ext_csd when selecting power class.
By doing this the power class will be selected even if mmc_init_card
is called with oldcard != NULL, which is the case after a suspend/resume.

Today ext_csd is NULL if mmc_init_card is called with oldcard != NULL
and power class will not be selected.

According to the eMMC specification the POWER_CLASS value is reset after
power failure, H/W reset assertion and any CMD0 reset.

Signed-off-by: Fredrik Soderstedt <fredrik.soderstedt@stericsson.com>
Reviewed-by: Johan Rudholm <jrudholm@gmail.com>
Acked By: Girish K S <girish.shivananjappa@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

...

This commit is contained in:

Fredrik Soderstedt 2013-04-23 16:27:07 +02:00 • committed by Chris Ball

parent 07a6821608

commit 6044371219

2 changed files with 59 additions and 25 deletions

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74

drivers/mmc/core/mmc.c

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10

include/linux/mmc/card.h

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