mmc: core: Avoid hogging the CPU while polling for busy in the I/O err path

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When mmc_blk_fix_state() sends a CMD12 to try to move the card into the
transfer state, it calls card_busy_detect() to poll for the card's state
with CMD13. This is done without any delays in between the commands being
sent.

Rather than fixing card_busy_detect() in this regards, let's instead
convert into using the common mmc_poll_for_busy(), which also helps us to
avoid open-coding.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Link: https://lore.kernel.org/r/20210702134229.357717-2-ulf.hansson@linaro.org

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This commit is contained in:

Ulf Hansson 2021-07-02 15:42:27 +02:00

parent 2b8ac062f3

commit 972d508483

3 changed files with 5 additions and 2 deletions

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2

drivers/mmc/core/block.c

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4

drivers/mmc/core/mmc_ops.c

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1

drivers/mmc/core/mmc_ops.h

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