diff options
| author | Chaotian Jing <chaotian.jing@mediatek.com> | 2016-05-19 11:47:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-03 07:22:11 +0300 |
| commit | f93063f1575b3534055989ab606714f2bb09771a (patch) | |
| tree | 8413a6301fb5315578bfefc4f359b12c7e2d7e1a | |
| parent | 08422dc1dd3169b8b0e4ff4abaf165b5a8e9b63c (diff) | |
| download | linux-f93063f1575b3534055989ab606714f2bb09771a.tar.xz | |
mmc: mmc: fix switch timeout issue caused by jiffies precision
[ Upstream commit 987aa5f8059613bf85cbb6f64ffbd34f5cb7a9d1 ]
with CONFIG_HZ=100, the precision of jiffies is 10ms, and the
generic_cmd6_time of some card is also 10ms. then, may be current
time is only 5ms, but already timed out caused by jiffies precision.
Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/mmc/core/mmc_ops.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 7911e0510a1d..16a39a8d2e7e 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -490,7 +490,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, timeout_ms = MMC_OPS_TIMEOUT_MS; /* Must check status to be sure of no errors. */ - timeout = jiffies + msecs_to_jiffies(timeout_ms); + timeout = jiffies + msecs_to_jiffies(timeout_ms) + 1; do { if (send_status) { err = __mmc_send_status(card, &status, ignore_crc); |