mmc: dw_mmc: Cleanup disable of low power mode w/ SDIO interrupts

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In the patch (9623b5b mmc: dw_mmc: Disable low power mode if SDIO
interrupts are used) I added code that disabled the low power mode of
dw_mmc when SDIO interrupts are used.  That code worked but always
felt a little hacky because we ended up disabling low power as a side
effect of the first enable_sdio_irq() call.  That wouldn't be so bad
except that disabling low power involves a complicated process of
writing to the CMD/CMDARG registers and that extra process makes it
difficult to cleanly the read-modify-write race in
dw_mci_enable_sdio_irq() (see future patch in the series).

Change the code to take advantage of the init_card() callback of the
mmc core to do this right at bootup.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

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Doug Anderson 2014-12-02 15:42:46 -08:00 • committed by Ulf Hansson

parent eac86321b5

commit b24c8b2601

2 changed files with 36 additions and 34 deletions

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69

drivers/mmc/host/dw_mmc.c

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1

drivers/mmc/host/dw_mmc.h

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