Re: [PATCH 1/1] media: pci: mgb4: Fix return value check in debugfs_init()

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On 23. 10. 24 8:36, Zhen Lei wrote:
Fix the incorrect return value check for debugfs_create_dir(), which
returns ERR_PTR(-ERROR) instead of NULL when it fails.

Fixes: 0ab13674a9bd ("media: pci: mgb4: Added Digiteq Automotive MGB4 driver")
Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
---
  drivers/media/pci/mgb4/mgb4_vin.c  | 2 +-
  drivers/media/pci/mgb4/mgb4_vout.c | 2 +-
  2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/pci/mgb4/mgb4_vin.c b/drivers/media/pci/mgb4/mgb4_vin.c
index e9332abb31729ea..808eb51b270c755 100644
--- a/drivers/media/pci/mgb4/mgb4_vin.c
+++ b/drivers/media/pci/mgb4/mgb4_vin.c
@@ -860,7 +860,7 @@ static void debugfs_init(struct mgb4_vin_dev *vindev)
vindev->debugfs = debugfs_create_dir(vindev->vdev.name,
  					     vindev->mgbdev->debugfs);
-	if (!vindev->debugfs)
+	if (IS_ERR(vindev->debugfs))
  		return;
vindev->regs[0].name = "CONFIG";
diff --git a/drivers/media/pci/mgb4/mgb4_vout.c b/drivers/media/pci/mgb4/mgb4_vout.c
index 998edcbd972387d..348c8e01fcbed5a 100644
--- a/drivers/media/pci/mgb4/mgb4_vout.c
+++ b/drivers/media/pci/mgb4/mgb4_vout.c
@@ -683,7 +683,7 @@ static void debugfs_init(struct mgb4_vout_dev *voutdev)
voutdev->debugfs = debugfs_create_dir(voutdev->vdev.name,
  					      voutdev->mgbdev->debugfs);
-	if (!voutdev->debugfs)
+	if (IS_ERR(voutdev->debugfs))
  		return;
voutdev->regs[0].name = "CONFIG";

This issue has already been addressed and fixed, see the v4l2 media.git branch:

https://git.linuxtv.org/media.git/tree/drivers/media/pci/mgb4/mgb4_vin.c https://git.linuxtv.org/media.git/tree/drivers/media/pci/mgb4/mgb4_vout.c

M.




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