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From 91b8246de8590bac89b03b4fd14c61a8b4053b9e Mon Sep 17 00:00:00 2001
From: Wang Qing <wangqing@vivo.com>
Date: Fri, 6 Nov 2020 17:43:31 +0800
Subject: [PATCH] ntb: idt: fix error check in ntb_hw_idt.c
Git-commit: 91b8246de8590bac89b03b4fd14c61a8b4053b9e
Patch-mainline: v5.11-rc1
References: jsc#SLE-13360

idt_create_dev never return NULL and fix smatch warning.

Signed-off-by: Wang Qing <wangqing@vivo.com>
Acked-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/ntb/hw/idt/ntb_hw_idt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/ntb/hw/idt/ntb_hw_idt.c b/drivers/ntb/hw/idt/ntb_hw_idt.c
index d54261f50851..e7a4c2aa8baa 100644
--- a/drivers/ntb/hw/idt/ntb_hw_idt.c
+++ b/drivers/ntb/hw/idt/ntb_hw_idt.c
@@ -2511,7 +2511,7 @@ static int idt_init_dbgfs(struct idt_ntb_dev *ndev)
 	/* If the top directory is not created then do nothing */
 	if (IS_ERR_OR_NULL(dbgfs_topdir)) {
 		dev_info(&ndev->ntb.pdev->dev, "Top DebugFS directory absent");
-		return PTR_ERR(dbgfs_topdir);
+		return PTR_ERR_OR_ZERO(dbgfs_topdir);
 	}
 
 	/* Create the info file node */
@@ -2756,7 +2756,7 @@ static int idt_pci_probe(struct pci_dev *pdev,
 
 	/* Allocate the memory for IDT NTB device data */
 	ndev = idt_create_dev(pdev, id);
-	if (IS_ERR_OR_NULL(ndev))
+	if (IS_ERR(ndev))
 		return PTR_ERR(ndev);
 
 	/* Initialize the basic PCI subsystem of the device */
-- 
2.26.2