scsi: ufs: Fix interrupt error message for shared interrupts

The interrupt might be shared, in which case it is not an error for the
interrupt handler to be called when the interrupt status is zero, so don't
print the message unless there was enabled interrupt status.

Link: https://lore.kernel.org/r/20200811133936.19171-1-adrian.hunter@intel.com
Fixes: 9333d7757348 ("scsi: ufs: Fix irq return code")
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index b4f9480..22f8014 100644 (file)
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -5969,7 +5969,7 @@ static irqreturn_t ufshcd_intr(int irq, void *__hba)
                intr_status = ufshcd_readl(hba, REG_INTERRUPT_STATUS);
        } while (intr_status && --retries);
 
-       if (retval == IRQ_NONE) {
+       if (enabled_intr_status && retval == IRQ_NONE) {
                dev_err(hba->dev, "%s: Unhandled interrupt 0x%08x\n",
                                        __func__, intr_status);
                ufshcd_dump_regs(hba, 0, UFSHCI_REG_SPACE_SIZE, "host_regs: ");