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authorMauro Carvalho Chehab <mchehab@s-opensource.com>2017-06-26 14:07:54 -0400
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2017-07-20 16:26:21 -0400
commit4ee236219f6da367093b503b52fcceb609397c6f (patch)
treed7c7b6acba03202f54f9434b827ebcafefcda9df /include/media
parent1ad371deb9b0be142dca205611a56854a37fc48d (diff)
downloadlinux-4ee236219f6da367093b503b52fcceb609397c6f.tar.bz2
media: v4l2-fwnode: suppress a warning at OF parsing logic
smatch produce this warning: drivers/media/v4l2-core/v4l2-fwnode.c:76 v4l2_fwnode_endpoint_parse_csi_bus() error: buffer overflow 'array' 5 <= u16max That's because, in thesis, the routine might have called with some value at bus->num_data_lanes. That's not the current case. Yet, better to shut up this warning, and make the code more reliable if some future changes might cause a bug. While here, simplify the code a little bit by reading only once from lanes-properties array. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/v4l2-fwnode.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/include/media/v4l2-fwnode.h b/include/media/v4l2-fwnode.h
index 29ae22bbbbaf..b373c43f65e8 100644
--- a/include/media/v4l2-fwnode.h
+++ b/include/media/v4l2-fwnode.h
@@ -26,6 +26,8 @@
struct fwnode_handle;
+#define MAX_DATA_LANES 4
+
/**
* struct v4l2_fwnode_bus_mipi_csi2 - MIPI CSI-2 bus data structure
* @flags: media bus (V4L2_MBUS_*) flags
@@ -37,10 +39,10 @@ struct fwnode_handle;
*/
struct v4l2_fwnode_bus_mipi_csi2 {
unsigned int flags;
- unsigned char data_lanes[4];
+ unsigned char data_lanes[MAX_DATA_LANES];
unsigned char clock_lane;
unsigned short num_data_lanes;
- bool lane_polarities[5];
+ bool lane_polarities[MAX_DATA_LANES + 1];
};
/**