scsi: qla2xxx: Fix NULL vs IS_ERR() bug for debugfs_create_dir()

Since both debugfs_create_dir() and debugfs_create_file() return ERR_PTR
and never NULL, use IS_ERR() instead of checking for NULL.

Fixes: 1e98fb0f9208 ("scsi: qla2xxx: Setup debugfs entries for remote ports")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/r/20230831140930.3166359-1-ruanjinjie@huawei.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c
index f060e59..a7a3647 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_dfs.c
+++ b/drivers/scsi/qla2xxx/qla_dfs.c
@@ -116,7 +116,7 @@ qla2x00_dfs_create_rport(scsi_qla_host_t *vha, struct fc_port *fp)
 
        sprintf(wwn, "pn-%016llx", wwn_to_u64(fp->port_name));
        fp->dfs_rport_dir = debugfs_create_dir(wwn, vha->dfs_rport_root);
-       if (!fp->dfs_rport_dir)
+       if (IS_ERR(fp->dfs_rport_dir))
                return;
        if (NVME_TARGET(vha->hw, fp))
                debugfs_create_file("dev_loss_tmo", 0600, fp->dfs_rport_dir,
@@ -708,14 +708,14 @@ create_nodes:
        if (IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha)) {
                ha->tgt.dfs_naqp = debugfs_create_file("naqp",
                    0400, ha->dfs_dir, vha, &dfs_naqp_ops);
-               if (!ha->tgt.dfs_naqp) {
+               if (IS_ERR(ha->tgt.dfs_naqp)) {
                        ql_log(ql_log_warn, vha, 0xd011,
                               "Unable to create debugFS naqp node.\n");
                        goto out;
                }
        }
        vha->dfs_rport_root = debugfs_create_dir("rports", ha->dfs_dir);
-       if (!vha->dfs_rport_root) {
+       if (IS_ERR(vha->dfs_rport_root)) {
                ql_log(ql_log_warn, vha, 0xd012,
                       "Unable to create debugFS rports node.\n");
                goto out;