linux-kernel - [PATCH 3.2 77/87] target/pscsi: fix return value check

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Message-ID: <lsq.1385387069.619375578@decadent.org.uk>
Date:	Mon, 25 Nov 2013 13:44:29 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Wei Yongjun" <yongjun_wei@...ndmicro.com.cn>,
	"Nicholas Bellinger" <nab@...ux-iscsi.org>
Subject: [PATCH 3.2 77/87] target/pscsi: fix return value check

3.2.53-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

commit 58932e96e438cd78f75e765d7b87ef39d3533d15 upstream.

In case of error, the function scsi_host_lookup() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
Signed-off-by: Nicholas Bellinger <nab@...ux-iscsi.org>
[bwh: Backported to 3.2: pscsi_configure_device() returns a pointer]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/target/target_core_pscsi.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -129,10 +129,10 @@ static int pscsi_pmode_enable_hba(struct
 	 * pSCSI Host ID and enable for phba mode
 	 */
 	sh = scsi_host_lookup(phv->phv_host_id);
-	if (IS_ERR(sh)) {
+	if (!sh) {
 		pr_err("pSCSI: Unable to locate SCSI Host for"
 			" phv_host_id: %d\n", phv->phv_host_id);
-		return PTR_ERR(sh);
+		return -EINVAL;
 	}
 
 	phv->phv_lld_host = sh;
@@ -564,10 +564,10 @@ static struct se_device *pscsi_create_vi
 			sh = phv->phv_lld_host;
 		} else {
 			sh = scsi_host_lookup(pdv->pdv_host_id);
-			if (IS_ERR(sh)) {
+			if (!sh) {
 				pr_err("pSCSI: Unable to locate"
 					" pdv_host_id: %d\n", pdv->pdv_host_id);
-				return ERR_CAST(sh);
+				return ERR_PTR(-EINVAL);
 			}
 		}
 	} else {

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