iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/bridge: it66121: Wait for next bridge to be probed

Browse Source 
If run before the next bridge is initialized, of_drm_find_bridge() will
give us a NULL pointer.

If that's the case, return -EPROBE_DEFER; we may have more luck next
time.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Fixes: 988156dc2fc9 ("drm: bridge: add it66121 driver")
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210827163956.27517-2-paul@crapouillou.net
This commit is contained in:
Paul Cercueil 2021-08-27 17:39:56 +01:00 committed by Robert Foss
parent 3a5f3d61de
commit 8b03e3fc79
No known key found for this signature in database
GPG Key ID: 3EFD900F76D1D784
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/bridge/ite-it66121.c
View File

@ -924,6 +924,9 @@ static int it66121_probe(struct i2c_client *client,
ctx->next_bridge = of_drm_find_bridge(ep);
of_node_put(ep);
if (!ctx->next_bridge)
return -EPROBE_DEFER;
i2c_set_clientdata(client, ctx);
mutex_init(&ctx->lock);