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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2022-03-04 13:56:56 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2022-03-07 13:47:39 +0300 |
| commit | 1760fdb6fe9f796fbdb9b4106b3e0bbacc16b55c (patch) | |
| tree | 67d774297e990266de1677a78957c03cac56594e /drivers/mmc/core/mmc_ops.h | |
| parent | f0d2f15362f02444c5d7ffd5a5eb03e4aa54b685 (diff) | |
| download | linux-1760fdb6fe9f796fbdb9b4106b3e0bbacc16b55c.tar.xz | |
mmc: core: Restore (almost) the busy polling for MMC_SEND_OP_COND
Commit 76bfc7ccc2fa ("mmc: core: adjust polling interval for CMD1"),
significantly decreased the polling period from ~10-12ms into just a couple
of us. The purpose was to decrease the total time spent in the busy polling
loop, but unfortunate it has lead to problems, that causes eMMC cards to
never gets out busy and thus fails to be initialized.
To fix the problem, but also to try to keep some of the new improved
behaviour, let's start by using a polling period of 1-2ms, which then
increases for each loop, according to common polling loop in
__mmc_poll_for_busy().
Reported-by: Jean Rene Dawin <jdawin@math.uni-bielefeld.de>
Reported-by: H. Nikolaus Schaller <hns@goldelico.com>
Cc: Huijin Park <huijin.park@samsung.com>
Fixes: 76bfc7ccc2fa ("mmc: core: adjust polling interval for CMD1")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Jean Rene Dawin <jdawin@math.uni-bielefeld.de>
Tested-by: H. Nikolaus Schaller <hns@goldelico.com>
Link: https://lore.kernel.org/r/20220304105656.149281-1-ulf.hansson@linaro.org
Diffstat (limited to 'drivers/mmc/core/mmc_ops.h')
| -rw-r--r-- | drivers/mmc/core/mmc_ops.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mmc/core/mmc_ops.h b/drivers/mmc/core/mmc_ops.h index 9c813b851d0b..09ffbc00908b 100644 --- a/drivers/mmc/core/mmc_ops.h +++ b/drivers/mmc/core/mmc_ops.h @@ -41,7 +41,8 @@ int mmc_can_ext_csd(struct mmc_card *card); int mmc_switch_status(struct mmc_card *card, bool crc_err_fatal); bool mmc_prepare_busy_cmd(struct mmc_host *host, struct mmc_command *cmd, unsigned int timeout_ms); -int __mmc_poll_for_busy(struct mmc_host *host, unsigned int timeout_ms, +int __mmc_poll_for_busy(struct mmc_host *host, unsigned int period_us, + unsigned int timeout_ms, int (*busy_cb)(void *cb_data, bool *busy), void *cb_data); int mmc_poll_for_busy(struct mmc_card *card, unsigned int timeout_ms, |