From: Felix Gu <ustc.gu@gmail.com>
To: Thierry Reding <thierry.reding@kernel.org>,
Mikko Perttunen <mperttunen@nvidia.com>,
David Airlie <airlied@gmail.com>,
Simona Vetter <simona@ffwll.ch>,
Sowjanya Komatineni <skomatineni@nvidia.com>
Cc: Thierry Reding <treding@nvidia.com>,
dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org, Felix Gu <ustc.gu@gmail.com>
Subject: [PATCH] gpu: host1x: mipi: Fix device_node reference leak in tegra_mipi_request()
Date: Thu, 16 Apr 2026 20:09:29 +0800 [thread overview]
Message-ID: <20260416-mipi-v1-1-9c027175abdf@gmail.com> (raw)
In tegra_mipi_request(), when provider.np is not equal with args.np, it
returns without calling of_node_put(args.np), causing a reference leak.
Convert to use the existing goto out pattern to ensure proper cleanup.
Fixes: 767598d447aa ("gpu: host1x: mipi: Update tegra_mipi_request() to be node based")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
---
drivers/gpu/host1x/mipi.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/host1x/mipi.c b/drivers/gpu/host1x/mipi.c
index 01513b775d89..988681423981 100644
--- a/drivers/gpu/host1x/mipi.c
+++ b/drivers/gpu/host1x/mipi.c
@@ -114,8 +114,10 @@ struct tegra_mipi_device *tegra_mipi_request(struct device *device,
if (err < 0)
return ERR_PTR(err);
- if (provider.np != args.np)
- return ERR_PTR(-ENODEV);
+ if (provider.np != args.np) {
+ err = -ENODEV;
+ goto out;
+ }
mipidev = kzalloc_obj(*mipidev);
if (!mipidev) {
---
base-commit: 936c21068d7ade00325e40d82bfd2f3f29d9f659
change-id: 20260416-mipi-8dfb3cc647e4
Best regards,
--
Felix Gu <ustc.gu@gmail.com>
reply other threads:[~2026-04-16 12:09 UTC|newest]
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