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scsi: aacraid: Allow reset_host sysfs var to recover Panicked Fw 

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>
This commit is contained in:
Raghava Aditya Renukunta 2017-12-26 20:34:27 -08:00 committed by Martin K. Petersen
parent f3a2327725
commit d1471eb0fa
1 changed files with 8 additions and 5 deletions
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13
drivers/scsi/aacraid/comminit.c
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@ -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);