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[v2,05/30] scsi: aacraid: Fix ioctl reset hang

Message ID 20171227043451.27813-6-RaghavaAditya.Renukunta@microsemi.com (mailing list archive)
State Accepted
Headers show

Commit Message

Raghava Aditya Renukunta Dec. 27, 2017, 4:34 a.m. UTC 
Driver would hang when attempting to send reset from the ioctl interface,
since it would wait to retrieve the ioctl mutex at send shutdown.

Set adapter shutdown and unlock mutex before sending down reset request.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/commctrl.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c
index 9ab0fa9..a2b3430 100644
--- a/drivers/scsi/aacraid/commctrl.c
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -1052,9 +1052,13 @@  static int aac_send_reset_adapter(struct aac_dev *dev, void __user *arg)
 	if (copy_from_user((void *)&reset, arg, sizeof(struct aac_reset_iop)))
 		return -EFAULT;
 
+	dev->adapter_shutdown = 1;
+
+	mutex_unlock(&dev->ioctl_mutex);
 	retval = aac_reset_adapter(dev, 0, reset.reset_type);
-	return retval;
+	mutex_lock(&dev->ioctl_mutex);
 
+	return retval;
 }
 
 int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)