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| author |   Paul Cercueil <paul@crapouillou.net> | 2021-08-27 17:39:56 +0100 |
|---|---|---|
| committer |   Robert Foss <robert.foss@linaro.org> | 2021-08-31 16:12:52 +0200 |
| commit | 8b03e3fc79189b17d31a82f5e175698802a11e87 (patch) | |
| tree | 41daad41a2e7739f335c4e908bf0294993e7c6f3 /drivers/gpu/drm/bridge | |
| parent | drm/bridge: it66121: Initialize {device,vendor}_ids (diff) | |
| download | linux-dev-8b03e3fc79189b17d31a82f5e175698802a11e87.tar.xz linux-dev-8b03e3fc79189b17d31a82f5e175698802a11e87.zip | |
drm/bridge: it66121: Wait for next bridge to be probed
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
Diffstat (limited to 'drivers/gpu/drm/bridge')
| -rw-r--r-- | drivers/gpu/drm/bridge/ite-it66121.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/ite-it66121.c b/drivers/gpu/drm/bridge/ite-it66121.c index b130d01147c6..9dc41a7b9136 100644 --- a/drivers/gpu/drm/bridge/ite-it66121.c +++ b/drivers/gpu/drm/bridge/ite-it66121.c @@ -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); |