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[v2,06/30] scsi: aacraid: Allow reset_host sysfs var to recover Panicked Fw

Message ID 20171227043451.27813-7-RaghavaAditya.Renukunta@microsemi.com (mailing list archive)
State Accepted
Headers show

Commit Message

Raghava Aditya Renukunta Dec. 27, 2017, 4:34 a.m. UTC 
It is possible to restart the controller via the use of the reset_host
sysfs variable. This does work for controllers that can no longer respond,
since driver will attempt to send down a shutdown in this path.

Check if the controller is able to receive commands before sending down
a shutdown

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

---
Changes in V2:
None

 drivers/scsi/aacraid/comminit.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)
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Patch

diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index 1bc623a..9eff246 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -295,12 +295,10 @@  int aac_send_shutdown(struct aac_dev * dev)
 {
 	struct fib * fibctx;
 	struct aac_close *cmd;
-	int status;
+	int status = 0;
 
-	fibctx = aac_fib_alloc(dev);
-	if (!fibctx)
-		return -ENOMEM;
-	aac_fib_init(fibctx);
+	if (aac_adapter_check_health(dev))
+		return status;
 
 	if (!dev->adapter_shutdown) {
 		mutex_lock(&dev->ioctl_mutex);
@@ -308,6 +306,11 @@  int aac_send_shutdown(struct aac_dev * dev)
 		mutex_unlock(&dev->ioctl_mutex);
 	}
 
+	fibctx = aac_fib_alloc(dev);
+	if (!fibctx)
+		return -ENOMEM;
+	aac_fib_init(fibctx);
+
 	cmd = (struct aac_close *) fib_data(fibctx);
 	cmd->command = cpu_to_le32(VM_CloseAll);
 	cmd->cid = cpu_to_le32(0xfffffffe);