linux-kernel - [PATCH v5 01/17] media: v4l2-fwnode: ignore endpoints that have no remote port parent

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1530298220-5097-2-git-send-email-steve_longerbeam@mentor.com>
Date:   Fri, 29 Jun 2018 11:49:45 -0700
From:   Steve Longerbeam <slongerbeam@...il.com>
To:     linux-media@...r.kernel.org
Cc:     Steve Longerbeam <steve_longerbeam@...tor.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v5 01/17] media: v4l2-fwnode: ignore endpoints that have no remote port parent

Documentation/devicetree/bindings/media/video-interfaces.txt states that
the 'remote-endpoint' property is optional.

So v4l2_async_notifier_fwnode_parse_endpoint() should not return error
if the endpoint has no remote port parent. Just ignore the endpoint,
skip adding an asd to the notifier and return 0.
__v4l2_async_notifier_parse_fwnode_endpoints() will then continue
parsing the remaining port endpoints of the device.

Signed-off-by: Steve Longerbeam <steve_longerbeam@...tor.com>
Acked-by: Hans Verkuil <hans.verkuil@...co.com>
---
Changes since v4:
- none
Changes since v3:
- none
Changes since v2:
- none
Changes since v1:
- don't pass an empty endpoint to the parse_endpoint callback,
  v4l2_async_notifier_fwnode_parse_endpoint() now just ignores them
  and returns success. The current users of
  v4l2_async_notifier_parse_fwnode_endpoints() (omap3isp, rcar-vin,
  intel-ipu3) no longer need modification.
---
 drivers/media/v4l2-core/v4l2-fwnode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c
index 3f77aa3..3240c2a 100644
--- a/drivers/media/v4l2-core/v4l2-fwnode.c
+++ b/drivers/media/v4l2-core/v4l2-fwnode.c
@@ -363,7 +363,7 @@ static int v4l2_async_notifier_fwnode_parse_endpoint(
 		fwnode_graph_get_remote_port_parent(endpoint);
 	if (!asd->match.fwnode) {
 		dev_warn(dev, "bad remote port parent\n");
-		ret = -EINVAL;
+		ret = -ENOTCONN;
 		goto out_err;
 	}
 
-- 
2.7.4