From: Ulf Hansson Date: Tue, 17 May 2022 10:10:46 +0000 (+0200) Subject: mmc: core: Fix busy polling for MMC_SEND_OP_COND again X-Git-Tag: baikal/aarch64/sdk6.1~4042^2 X-Git-Url: https://git.baikalelectronics.ru/?a=commitdiff_plain;h=d05875b15e3f18be39a121de4b15c95192eb39e2;p=kernel.git mmc: core: Fix busy polling for MMC_SEND_OP_COND again It turned out that polling period for MMC_SEND_OP_COND, that currently is set to 1ms, still isn't sufficient. In particular a Micron eMMC on a Beaglebone platform, is reported to sometimes fail to initialize. Additional test, shows that extending the period to 4ms is working fine, so let's make that change. Reported-by: Jean Rene Dawin Tested-by: Jean Rene Dawin Fixes: 1aa0d7d2e8ee (mmc: core: Restore (almost) the busy polling for MMC_SEND_OP_COND") Fixes: 8b3cac84c8c1 ("mmc: core: adjust polling interval for CMD1") Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson Link: https://lore.kernel.org/r/20220517101046.27512-1-ulf.hansson@linaro.org --- diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 180d7e9d3400a..81c55bfd6e0c2 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -21,7 +21,7 @@ #define MMC_BKOPS_TIMEOUT_MS (120 * 1000) /* 120s */ #define MMC_SANITIZE_TIMEOUT_MS (240 * 1000) /* 240s */ -#define MMC_OP_COND_PERIOD_US (1 * 1000) /* 1ms */ +#define MMC_OP_COND_PERIOD_US (4 * 1000) /* 4ms */ #define MMC_OP_COND_TIMEOUT_MS 1000 /* 1s */ static const u8 tuning_blk_pattern_4bit[] = {