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| author | Sakari Ailus <sakari.ailus@iki.fi> | 2015-03-26 01:57:26 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-04-02 22:37:21 +0300 |
| commit | 8b3aff7cdd6c2e7c9a3df755b23525e393195102 (patch) | |
| tree | 51ec63fcd7afa4129baa1dcc0d13891469d861c6 /drivers/media/platform/omap3isp/isp.c | |
| parent | 697cca21b09ce4c641bce821b90e90b3e95d17f6 (diff) | |
| download | linux-8b3aff7cdd6c2e7c9a3df755b23525e393195102.tar.xz | |
[media] omap3isp: Avoid a BUG_ON() in media_entity_create_link()
If an uninitialised v4l2_subdev struct was passed to
media_entity_create_link(), one of the BUG_ON()'s in the function will be
hit since media_entity.num_pads will be zero. Avoid this by checking whether
the num_pads field is non-zero for the interface.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/platform/omap3isp/isp.c')
| -rw-r--r-- | drivers/media/platform/omap3isp/isp.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index fb193b65b5ce..4ab674dd43c1 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -1946,6 +1946,19 @@ static int isp_register_entities(struct isp_device *isp) goto done; } + /* + * Not all interfaces are available on all revisions + * of the ISP. The sub-devices of those interfaces + * aren't initialised in such a case. Check this by + * ensuring the num_pads is non-zero. + */ + if (!input->num_pads) { + dev_err(isp->dev, "%s: invalid input %u\n", + entity->name, subdevs->interface); + ret = -EINVAL; + goto done; + } + for (i = 0; i < sensor->entity.num_pads; i++) { if (sensor->entity.pads[i].flags & MEDIA_PAD_FL_SOURCE) break; |