diff options
| author | Ulf Hansson <ulf.hansson@linaro.org> | 2021-07-02 15:42:28 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2021-08-24 10:15:31 +0200 |
| commit | 468108155b0f89cc08189cc33f9bacfe9da8a125 (patch) | |
| tree | 4767c6ee222375f87704ec26d7f463ee03eac914 /drivers/mmc | |
| parent | 972d5084831dc9ae30f1a4b66cb4a19fb7ba6f09 (diff) | |
mmc: core: Avoid hogging the CPU while polling for busy for mmc ioctls
When __mmc_blk_ioctl_cmd() calls card_busy_detect() to verify that the
card's states moves back into transfer state, the polling with CMD13 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/20210702134229.357717-3-ulf.hansson@linaro.org
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/block.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index 170343411f53..c30d0ab15539 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -605,7 +605,8 @@ static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md, * Ensure RPMB/R1B command has completed by polling CMD13 * "Send Status". */ - err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, NULL); + err = mmc_poll_for_busy(card, MMC_BLK_TIMEOUT_MS, false, + MMC_BUSY_IO); } return err; |