From: Bart Van Assche bvanassche@acm.org
[ Upstream commit dcd5b7637c6d442d957f73780a03047413ed3a10 ]
Reduce the START STOP UNIT command timeout to one second since on Android devices a kernel panic is triggered if an attempt to suspend the system takes more than 20 seconds. One second should be enough for the START STOP UNIT command since this command completes in less than a millisecond for the UFS devices I have access to.
Signed-off-by: Bart Van Assche bvanassche@acm.org Link: https://lore.kernel.org/r/20221018202958.1902564-7-bvanassche@acm.org Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/ufs/core/ufshcd.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index a202d7d5240d..6a2a187d6f83 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8741,8 +8741,6 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba, struct scsi_device *sdp; unsigned long flags; int ret, retries; - unsigned long deadline; - int32_t remaining;
spin_lock_irqsave(hba->host->host_lock, flags); sdp = hba->ufs_device_wlun; @@ -8775,14 +8773,9 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba, * callbacks hence set the RQF_PM flag so that it doesn't resume the * already suspended childs. */ - deadline = jiffies + 10 * HZ; for (retries = 3; retries > 0; --retries) { - ret = -ETIMEDOUT; - remaining = deadline - jiffies; - if (remaining <= 0) - break; ret = scsi_execute(sdp, cmd, DMA_NONE, NULL, 0, NULL, &sshdr, - remaining / HZ, 0, 0, RQF_PM, NULL); + HZ, 0, 0, RQF_PM, NULL); if (!scsi_status_is_check_condition(ret) || !scsi_sense_valid(&sshdr) || sshdr.sense_key != UNIT_ATTENTION)