mmc: Add .multi_io_quirk callback for multi I/O HW bug

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Historically, we have been using MMC_CAP* to handle host HW issues and
currently the block layer uses MMC_CAP2_NO_MULTI_READ flag for a multi
I/O HW bug workaround.

There are a few tweaks needed to make MMC_CAP2_NO_MULTI_READ suite all
situations. Therefore let's add an optional host ops callback to enable
host drivers to return the number of blocks it allows per request.

In a future patch and when host drivers have converted to the new
callback, MMC_CAP2_NO_MULTI_READ shall be removed.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

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Kuninori Morimoto 2014-09-02 19:08:53 -07:00 • committed by Ulf Hansson

parent adc828556d

commit 2e47e84245

2 changed files with 17 additions and 0 deletions

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7

include/linux/mmc/host.h

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