target/pscsi: fix return value check

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@trendmicro.com.cn>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
[bwh: Backported to 3.2: pscsi_configure_device() returns a pointer]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index 5c12137..e813227 100644 (file)
--- 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 se_hba *hba, unsigned long mode_flag)
         * 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_virtdevice(
                        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 {