media: nuvoton: Fix an error check in npcm_video_ece_init()

commit c4b7779abc6633677e6edb79e2809f4f61fde157 upstream.

When function of_find_device_by_node() fails, it returns NULL instead of
an error code. So the corresponding error check logic should be modified
to check whether the return value is NULL and set the error code to be
returned as -ENODEV.

Fixes: 46c15a4ff1f4 ("media: nuvoton: Add driver for NPCM video capture and encoding engine")
Cc: stable@vger.kernel.org
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20241015014053.669-1-thunder.leizhen@huawei.com
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/media/platform/nuvoton/npcm-video.c b/drivers/media/platform/nuvoton/npcm-video.c
index 60fbb91400355c236b8f0b245cff509fc10516cf..db454c9d2641f8f29da5924eccde9d48c2d065b5 100644 (file)
--- a/drivers/media/platform/nuvoton/npcm-video.c
+++ b/drivers/media/platform/nuvoton/npcm-video.c
@@ -1667,9 +1667,9 @@ static int npcm_video_ece_init(struct npcm_video *video)
                dev_info(dev, "Support HEXTILE pixel format\n");
 
                ece_pdev = of_find_device_by_node(ece_node);
-               if (IS_ERR(ece_pdev)) {
+               if (!ece_pdev) {
                        dev_err(dev, "Failed to find ECE device\n");
-                       return PTR_ERR(ece_pdev);
+                       return -ENODEV;
                }
                of_node_put(ece_node);