The driver may sleep in the interrupt handler.
The function call path is:
esas2r_adapter_tasklet (interrupt handler)
esas2r_do_tasklet_tasks
esas2r_handle_chip_rst_during_tasklet
esas2r_check_adapter
schedule_timeout_interruptible
To fix it, schedule_timeout_uninterruptible is replaced with mdelay.
This bug is found by my static analysis tool(DSAC) and checked by my code review.
Signed-off-by: Jia-Ju Bai <baijiaju1990@xxxxxxx>
---
drivers/scsi/esas2r/esas2r_init.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/esas2r/esas2r_init.c b/drivers/scsi/esas2r/esas2r_init.c
index 5b14dd2..0b9f547 100644
--- a/drivers/scsi/esas2r/esas2r_init.c
+++ b/drivers/scsi/esas2r/esas2r_init.c
@@ -1068,7 +1068,7 @@ bool esas2r_check_adapter(struct esas2r_adapter *a)
break;
}
- schedule_timeout_interruptible(msecs_to_jiffies(100));
+ mdelay(100);
if ((jiffies_to_msecs(jiffies) - starttime) > 180000) {
esas2r_hdebug("FW ready TMO");
@@ -1091,7 +1091,7 @@ bool esas2r_check_adapter(struct esas2r_adapter *a)
break;
}
- schedule_timeout_interruptible(msecs_to_jiffies(50));
+ mdelay(50);
if ((jiffies_to_msecs(jiffies) - starttime) > 3000) {
esas2r_hdebug("timeout waiting for interface down");
@@ -1180,7 +1180,7 @@ bool esas2r_check_adapter(struct esas2r_adapter *a)
break;
}
- schedule_timeout_interruptible(msecs_to_jiffies(100));
+ mdelay(100);
if ((jiffies_to_msecs(jiffies) - starttime) > 3000) {
esas2r_hdebug(
--
1.7.9.5
