diff mbox series

[2/2] scsi: ufs: Improve interrupt handling for shared interrupts

Message ID 20200810135548.28213-2-adrian.hunter@intel.com (mailing list archive)
State Superseded
Headers show
Series [1/2] scsi: ufs: Fix interrupt error message for shared interrupts | expand

Commit Message

Adrian Hunter Aug. 10, 2020, 1:55 p.m. UTC
For shared interrupts, the interrupt status might be zero, so check that
first.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 drivers/scsi/ufs/ufshcd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index d7522dba4dcf..fd006340f37a 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -5983,7 +5983,7 @@  static irqreturn_t ufshcd_intr(int irq, void *__hba)
 	 * read, make sure we handle them by checking the interrupt status
 	 * again in a loop until we process all of the reqs before returning.
 	 */
-	do {
+	while (intr_status && retries--) {
 		enabled_intr_status =
 			intr_status & ufshcd_readl(hba, REG_INTERRUPT_ENABLE);
 		if (intr_status)
@@ -5992,7 +5992,7 @@  static irqreturn_t ufshcd_intr(int irq, void *__hba)
 			retval |= ufshcd_sl_intr(hba, enabled_intr_status);
 
 		intr_status = ufshcd_readl(hba, REG_INTERRUPT_STATUS);
-	} while (intr_status && --retries);
+	}
 
 	spin_unlock(hba->host->host_lock);
 	return retval;