From: Peter Wang peter.wang@mediatek.com
When ufshcd_rtc_work calls ufshcd_rpm_put_sync and the pm's usage_count is 0, it will enter the runtime suspend callback. However, the runtime suspend callback will wait to flush ufshcd_rtc_work, causing a deadlock. Replacing ufshcd_rpm_put_sync with ufshcd_rpm_put can avoid the deadlock.
Fixes: 6bf999e0eb41 ("scsi: ufs: core: Add UFS RTC support") Cc: stable@vger.kernel.org #6.11.x Signed-off-by: Peter Wang peter.wang@mediatek.com Reviewed-by: Bart Van Assche bvanassche@acm.org --- drivers/ufs/core/ufshcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index a63dcf48e59d..f5846598d80e 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8219,7 +8219,7 @@ static void ufshcd_update_rtc(struct ufs_hba *hba)
err = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_WRITE_ATTR, QUERY_ATTR_IDN_SECONDS_PASSED, 0, 0, &val); - ufshcd_rpm_put_sync(hba); + ufshcd_rpm_put(hba);
if (err) dev_err(hba->dev, "%s: Failed to update rtc %d\n", __func__, err);