diff options
| author | Chaotian Jing <chaotian.jing@mediatek.com> | 2016-05-19 16:47:42 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-03 06:23:24 +0200 |
| commit | 695fc282c337c5f520582eaf3bda9b53319384e4 (patch) | |
| tree | 85b6b244c961e108e3bae8e237e67a25935ed11a | |
| parent | c89eceddfaeb07249b5043d98f8b51e7d04ec386 (diff) | |
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 1f444269ebbe..76b49b9772d0 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -542,7 +542,7 @@ 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); |