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| author |   Ulf Hansson <ulf.hansson@linaro.org> | 2021-07-02 15:42:29 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2021-08-24 10:15:32 +0200 |
| commit | 6966e6094c6d594044ef1b740dd827e05881331c (patch) | |
| tree | 4a9ba8bc0ecd16dac8a1198d1a491b61adcd888d /drivers/mmc/core/mmc_ops.c | |
| parent | mmc: core: Avoid hogging the CPU while polling for busy for mmc ioctls (diff) | |
| download | linux-dev-6966e6094c6d594044ef1b740dd827e05881331c.tar.xz linux-dev-6966e6094c6d594044ef1b740dd827e05881331c.zip | |
mmc: core: Avoid hogging the CPU while polling for busy after I/O writes
When mmc_blk_card_busy() 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/20210702134229.357717-4-ulf.hansson@linaro.org
Diffstat (limited to 'drivers/mmc/core/mmc_ops.c')
| -rw-r--r-- | drivers/mmc/core/mmc_ops.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index e2c431c0ce5d..90d213a2203f 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -510,6 +510,7 @@ int __mmc_poll_for_busy(struct mmc_card *card, unsigned int timeout_ms, return 0; } +EXPORT_SYMBOL_GPL(__mmc_poll_for_busy); int mmc_poll_for_busy(struct mmc_card *card, unsigned int timeout_ms, bool retry_crc_err, enum mmc_busy_cmd busy_cmd) |