6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ranjan Kumar <ranjan.kumar@xxxxxxxxxxxx>
commit 3c978492c333f0c08248a8d51cecbe5eb5f617c9 upstream.
The retry loop continues to iterate until the count reaches 30, even after
receiving the correct value. Exit loop when a non-zero value is read.
Fixes: 4ca10f3e3174 ("scsi: mpt3sas: Perform additional retries if doorbell read returns 0")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Ranjan Kumar <ranjan.kumar@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20231020105849.6350-1-ranjan.kumar@xxxxxxxxxxxx
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/mpt3sas/mpt3sas_base.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -223,8 +223,8 @@ _base_readl_ext_retry(const void __iomem
for (i = 0 ; i < 30 ; i++) {
ret_val = readl(addr);
- if (ret_val == 0)
- continue;
+ if (ret_val != 0)
+ break;
}
return ret_val;
