From: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Date: Tue, 26 Dec 2017 20:34:27 -0800
Subject: scsi: aacraid: Allow reset_host sysfs var to recover Panicked Fw
Patch-mainline: v4.16-rc1
Git-commit: d1471eb0faef9edd65cd44c1a3c1ff13c251fead
References: FATE#325927
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>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
drivers/scsi/aacraid/comminit.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -295,12 +295,10 @@ int aac_send_shutdown(struct aac_dev * d
{
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 * d
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);