scsi: pmcraid: Add missing resource releases

Most error branches following the call to pmcraid_get_free_cmd contain a
call to pmcraid_return_cmd. This patch add these calls where they are
missing.

Moreover, most error branches following the call to class_create contain
a call to class_destroy. This patch add these calls where they are
missing.

This issue was found with Hector.

Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index 68a5c347fae9a578fdcacbf6c618a0c15f4f6bb6..cb12b7bad8e606d37ac8e57e65f0ca635959373a 100644 (file)
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -3792,11 +3792,11 @@ static long pmcraid_ioctl_passthrough(
                                                      direction);
                if (rc) {
                        pmcraid_err("couldn't build passthrough ioadls\n");
-                       goto out_free_buffer;
+                       goto out_free_cmd;
                }
        } else if (request_size < 0) {
                rc = -EINVAL;
-               goto out_free_buffer;
+               goto out_free_cmd;
        }
 
        /* If data is being written into the device, copy the data from user
@@ -3913,6 +3913,8 @@ out_handle_response:
 
 out_free_sglist:
        pmcraid_release_passthrough_ioadls(cmd, request_size, direction);
+
+out_free_cmd:
        pmcraid_return_cmd(cmd);
 
 out_free_buffer:
@@ -6023,8 +6025,10 @@ static int __init pmcraid_init(void)
 
        error = pmcraid_netlink_init();
 
-       if (error)
+       if (error) {
+               class_destroy(pmcraid_class);
                goto out_unreg_chrdev;
+       }
 
        error = pci_register_driver(&pmcraid_driver);