From: Laurent Pinchart Date: Wed, 20 Aug 2025 14:00:20 +0000 (+0300) Subject: media: mc: Fix MUST_CONNECT handling for pads with no links X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=eec81250219a209b863f11d02128ec1dd8e20877;p=users%2Fhch%2Fmisc.git media: mc: Fix MUST_CONNECT handling for pads with no links Commit b3decc5ce7d7 ("media: mc: Expand MUST_CONNECT flag to always require an enabled link") expanded the meaning of the MUST_CONNECT flag to require an enabled link in all cases. To do so, the link exploration code was expanded to cover unconnected pads, in order to reject those that have the MUST_CONNECT flag set. The implementation was however incorrect, ignoring unconnected pads instead of ignoring connected pads. Fix it. Reported-by: Martin Kepplinger-Novaković Closes: https://lore.kernel.org/linux-media/20250205172957.182362-1-martink@posteo.de Reported-by: Maud Spierings Closes: https://lore.kernel.org/linux-media/20250818-imx8_isi-v1-1-e9cfe994c435@gocontroll.com Fixes: b3decc5ce7d7 ("media: mc: Expand MUST_CONNECT flag to always require an enabled link") Cc: stable@vger.kernel.org # 6.1 Signed-off-by: Laurent Pinchart Tested-by: Maud Spierings Tested-by: Martin Kepplinger-Novaković Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil --- diff --git a/drivers/media/mc/mc-entity.c b/drivers/media/mc/mc-entity.c index 045590905582..307920c8b354 100644 --- a/drivers/media/mc/mc-entity.c +++ b/drivers/media/mc/mc-entity.c @@ -691,7 +691,7 @@ done: * (already discovered through iterating over links) and pads * not internally connected. */ - if (origin == local || !local->num_links || + if (origin == local || local->num_links || !media_entity_has_pad_interdep(origin->entity, origin->index, local->index)) continue;