linux-kernel - [PATCH v3 2/5] st: clean up dev cleanup in st

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Message-ID: <4FBACC57.6080503@suse.com>
Date:	Mon, 21 May 2012 16:14:31 -0700
From:	Lee Duncan <lduncan@...e.com>
To:	linux-scsi@...r.kernel.org
CC:	linux-kernel@...r.kernel.org, kai.makisara@...umbus.fi,
	jeffm@...e.com
Subject: [PATCH v3 2/5] st: clean up dev cleanup in st_probe

From: Jeff Mahoney <jeffm@...e.com>

st_probe leaves a cdev pointer hanging around that is compared
during the error path and freed later. There's no need for the pointer
to hang around at all. So we free it immediately and simplify the error
handling.

Signed-off-by: Jeff Mahoney <jeffm@...e.com>
Signed-off-by: Lee Duncan <lduncan@...e.com>
---
 drivers/scsi/st.c |   11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 662f9a0..f437b7f 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -4156,6 +4156,7 @@ static int st_probe(struct device *dev)
 				printk(KERN_ERR
 				       "st%d: out of memory. Device not attached.\n",
 				       dev_num);
+				cdev_del(cdev);
 				goto out_free_tape;
 			}
 			cdev->owner = THIS_MODULE;
@@ -4194,17 +4195,13 @@ out_free_tape:
 				  "tape");
 		for (j=0; j < 2; j++) {
 			if (STm->cdevs[j]) {
-				if (cdev == STm->cdevs[j])
-					cdev = NULL;
-					device_destroy(&st_sysfs_class,
-						       MKDEV(SCSI_TAPE_MAJOR,
-							     TAPE_MINOR(i, mode, j)));
+				device_destroy(&st_sysfs_class,
+					       MKDEV(SCSI_TAPE_MAJOR,
+						     TAPE_MINOR(i, mode, j)));
 				cdev_del(STm->cdevs[j]);
 			}
 		}
 	}
-	if (cdev)
-		cdev_del(cdev);
 	write_lock(&st_dev_arr_lock);
 	scsi_tapes[dev_num] = NULL;
 	st_nr_dev--;
-- 
1.7.9.2

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