From 1760fdb6fe9f796fbdb9b4106b3e0bbacc16b55c Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Fri, 4 Mar 2022 11:56:56 +0100 Subject: 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 Reported-by: H. Nikolaus Schaller Cc: Huijin Park Fixes: 76bfc7ccc2fa ("mmc: core: adjust polling interval for CMD1") Signed-off-by: Ulf Hansson Tested-by: Jean Rene Dawin Tested-by: H. Nikolaus Schaller Link: https://lore.kernel.org/r/20220304105656.149281-1-ulf.hansson@linaro.org --- drivers/mmc/core/sd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mmc/core/sd.c') diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index bd87012c220c..bfbfed30dc4d 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -1672,7 +1672,7 @@ static int sd_poweroff_notify(struct mmc_card *card) cb_data.card = card; cb_data.reg_buf = reg_buf; - err = __mmc_poll_for_busy(card->host, SD_POWEROFF_NOTIFY_TIMEOUT_MS, + err = __mmc_poll_for_busy(card->host, 0, SD_POWEROFF_NOTIFY_TIMEOUT_MS, &sd_busy_poweroff_notify_cb, &cb_data); out: -- cgit v1.2.3-70-g09d2