linux-kernel - [PATCH] SCSI, Brocade FC HBA: Remember to always release

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Date:	Wed, 12 Jan 2011 23:09:59 +0100 (CET)
From:	Jesper Juhl <jj@...osbits.net>
To:	linux-kernel@...r.kernel.org
cc:	linux-scsi@...r.kernel.org,
	"James E.J. Bottomley" <James.Bottomley@...e.de>,
	Jing Huang <huangj@...cade.com>
Subject: [PATCH] SCSI, Brocade FC HBA: Remember to always release_firmware()
 so we don't leak memory.

Once we've called request_firmware() we must remember to call 
release_firmware() to free memory. We don't currently do this in 
bfad_read_firmware(); causing a memory leak.

Signed-off-by: Jesper Juhl <jj@...osbits.net>
---
 bfad.c |   11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

  Compile tested only.

diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c
index 44524cf..d7bafeb 100644
--- a/drivers/scsi/bfa/bfad.c
+++ b/drivers/scsi/bfa/bfad.c
@@ -1558,23 +1558,22 @@ bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
 
 	if (request_firmware(&fw, fw_name, &pdev->dev)) {
 		printk(KERN_ALERT "Can't locate firmware %s\n", fw_name);
-		goto error;
+		*bfi_image = NULL;
+		goto out;
 	}
 
 	*bfi_image = vmalloc(fw->size);
 	if (NULL == *bfi_image) {
 		printk(KERN_ALERT "Fail to allocate buffer for fw image "
 			"size=%x!\n", (u32) fw->size);
-		goto error;
+		goto out;
 	}
 
 	memcpy(*bfi_image, fw->data, fw->size);
 	*bfi_image_size = fw->size/sizeof(u32);
-
+out:
+	release_firmware(fw);
 	return *bfi_image;
-
-error:
-	return NULL;
 }
 
 u32 *


-- 
Jesper Juhl <jj@...osbits.net>            http://www.chaosbits.net/
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