aacraid: Fix AIF triggered IOP_RESET

while driver removal is in progress or PCI shutdown is invoked, driver
kills AIF aacraid thread, but IOCTL requests from the management tools
re-start AIF thread leading to IOP_RESET.

Fixed by setting adapter_shutdown flag when PCI shutdown is invoked.

Signed-off-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@pmcs.com>
Reviewed-by: Shane Seymour <shane.seymour@hpe.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

3 files changed, 12 insertions, 4 deletions

diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c
index ebf214b863a4..4b3bb52b5108 100644
--- a/drivers/scsi/aacraid/commctrl.c
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -857,6 +857,11 @@ int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
 
         mutex_lock(&dev->ioctl_mutex);
 
+        if (dev->adapter_shutdown) {
+                status = -EACCES;
+                goto cleanup;
+        }
+
         /*
          *      HBA gets first crack
          */
diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index 0e954e37f0b5..2b4e75380ae6 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -212,8 +212,11 @@ int aac_send_shutdown(struct aac_dev * dev)
                 return -ENOMEM;
         aac_fib_init(fibctx);
 
-        cmd = (struct aac_close *) fib_data(fibctx);
+        mutex_lock(&dev->ioctl_mutex);
+        dev->adapter_shutdown = 1;
+        mutex_unlock(&dev->ioctl_mutex);
 
+        cmd = (struct aac_close *) fib_data(fibctx);
         cmd->command = cpu_to_le32(VM_CloseAll);
         cmd->cid = cpu_to_le32(0xfffffffe);
 
@@ -229,7 +232,6 @@ int aac_send_shutdown(struct aac_dev * dev)
         /* FIB should be freed only after getting the response from the F/W */
         if (status != -ERESTARTSYS)
                 aac_fib_free(fibctx);
-        dev->adapter_shutdown = 1;
         if ((dev->pdev->device == PMC_DEVICE_S7 ||
              dev->pdev->device == PMC_DEVICE_S8 ||
              dev->pdev->device == PMC_DEVICE_S9) &&
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 3f9c7415bd7e..334f2a602fca 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -705,7 +705,7 @@ static long aac_cfg_ioctl(struct file *file,
 {
         struct aac_dev *aac = (struct aac_dev *)file->private_data;
 
-        if (!capable(CAP_SYS_RAWIO) || aac->adapter_shutdown)
+        if (!capable(CAP_SYS_RAWIO))
                 return -EPERM;
 
         return aac_do_ioctl(aac, cmd, (void __user *)arg);
@@ -1072,6 +1072,8 @@ static void __aac_shutdown(struct aac_dev * aac)
         int i;
         int cpu;
 
+        aac_send_shutdown(aac);
+
         if (aac->aif_thread) {
                 int i;
                 /* Clear out events first */
@@ -1083,7 +1085,6 @@ static void __aac_shutdown(struct aac_dev * aac)
                 }
                 kthread_stop(aac->thread);
         }
-        aac_send_shutdown(aac);
         aac_adapter_disable_int(aac);
         cpu = cpumask_first(cpu_online_mask);
         if (aac->pdev->device == PMC_DEVICE_S6 ||