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media: v4l2-fwnode: Check subdev count after checking port 

Current implementation of __v4l2_async_notifier_parse_fwnode_endpoints()
checks first whether subdev_count >= subdev_max and only then whether
the port being parsed matches the given port index. This triggers an
error in otherwise valid cases of skipping ports that do not match.

Fix this by moving the check below the port index check.

Fixes: 9ca4653121 ("media: v4l: fwnode: Support generic parsing of graph endpoints in a device")

Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Tomasz Figa 2017-11-15 06:55:22 -05:00 committed by Mauro Carvalho Chehab
parent 2aa4d4985f
commit 3bf393860f
1 changed files with 5 additions and 5 deletions
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10
drivers/media/v4l2-core/v4l2-fwnode.c
View File

@ -458,11 +458,6 @@ static int __v4l2_async_notifier_parse_fwnode_endpoints(
if (!is_available)
continue;
if (WARN_ON(notifier->num_subdevs >= notifier->max_subdevs)) {
ret = -EINVAL;
break;
}
if (has_port) {
struct fwnode_endpoint ep;
@ -474,6 +469,11 @@ static int __v4l2_async_notifier_parse_fwnode_endpoints(
continue;
}
if (WARN_ON(notifier->num_subdevs >= notifier->max_subdevs)) {
ret = -EINVAL;
break;
}
ret = v4l2_async_notifier_fwnode_parse_endpoint(
dev, notifier, fwnode, asd_struct_size, parse_endpoint);
if (ret < 0)