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Subject[PATCH v2 7/8] [media] exynos4-is: Check v4l2_of_parse_endpoint() return value
Date
The v4l2_of_parse_endpoint() function can fail so check the return value.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---

Changes in v2: None

drivers/media/platform/exynos4-is/media-dev.c | 8 +++++++-
drivers/media/platform/exynos4-is/mipi-csis.c | 10 +++++++---
2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c
index f3b2dd30ec77..662d4a5c584e 100644
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -332,13 +332,19 @@ static int fimc_md_parse_port_node(struct fimc_md *fmd,
struct fimc_source_info *pd = &fmd->sensor[index].pdata;
struct device_node *rem, *ep, *np;
struct v4l2_of_endpoint endpoint;
+ int ret;

/* Assume here a port node can have only one endpoint node. */
ep = of_get_next_child(port, NULL);
if (!ep)
return 0;

- v4l2_of_parse_endpoint(ep, &endpoint);
+ ret = v4l2_of_parse_endpoint(ep, &endpoint);
+ if (ret) {
+ of_node_put(ep);
+ return ret;
+ }
+
if (WARN_ON(endpoint.base.port == 0) || index >= FIMC_MAX_SENSORS)
return -EINVAL;

diff --git a/drivers/media/platform/exynos4-is/mipi-csis.c b/drivers/media/platform/exynos4-is/mipi-csis.c
index ac5e50e595be..bd5c46c3d4b7 100644
--- a/drivers/media/platform/exynos4-is/mipi-csis.c
+++ b/drivers/media/platform/exynos4-is/mipi-csis.c
@@ -736,6 +736,7 @@ static int s5pcsis_parse_dt(struct platform_device *pdev,
{
struct device_node *node = pdev->dev.of_node;
struct v4l2_of_endpoint endpoint;
+ int ret;

if (of_property_read_u32(node, "clock-frequency",
&state->clk_frequency))
@@ -751,7 +752,9 @@ static int s5pcsis_parse_dt(struct platform_device *pdev,
return -EINVAL;
}
/* Get port node and validate MIPI-CSI channel id. */
- v4l2_of_parse_endpoint(node, &endpoint);
+ ret = v4l2_of_parse_endpoint(node, &endpoint);
+ if (ret)
+ goto err;

state->index = endpoint.base.port - FIMC_INPUT_MIPI_CSI2_0;
if (state->index >= CSIS_MAX_ENTITIES)
@@ -764,9 +767,10 @@ static int s5pcsis_parse_dt(struct platform_device *pdev,
"samsung,csis-wclk");

state->num_lanes = endpoint.bus.mipi_csi2.num_data_lanes;
- of_node_put(node);

- return 0;
+err:
+ of_node_put(node);
+ return ret;
}

static int s5pcsis_pm_resume(struct device *dev, bool runtime);
--
2.4.3
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