Hi Marek,
Marek Szyprowski wrote:
Commit 0c426c472b5585ed6e59160359c979506d45ae49 ("[media] media: Always
keep a graph walk large enough around") changed
media_device_register_entity() function to take mdev->graph_mutex. This
causes deadlock in driver probe, which calls (indirectly) this function
with ->graph_mutex taken. This patch removes taking ->graph_mutex in
driver probe to avoid deadlock. Other drivers don't take ->graph_mutex
for entity registration, so this change should be safe.
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Acked-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
You could also add:
Fixes: 0c426c472b55 ("[media] media: Always keep a graph walk large
enough around")
I guess these should go to fixes, the patches in question are already
heading for v4.6. Cc Mauro.
--
Kind regards,
Sakari Ailus
sakari.ailus@xxxxxxxxxxxxxxx
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