Re: [PATCH] drm/connector: Set DDC pointer in drmm_connector_init

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Am 19.10.22 um 16:34 schrieb Maxime Ripard:
Commit 35a3b82f1bdd ("drm/connector: Introduce drmm_connector_init")
introduced the function drmm_connector_init() with a parameter for an
optional ddc pointer to the i2c controller used to access the DDC bus.

However, the underlying call to __drm_connector_init() was always
setting it to NULL instead of passing the ddc argument around.

This resulted in unexpected null pointer dereference on platforms
expecting to get a DDC controller.

Fixes: 35a3b82f1bdd ("drm/connector: Introduce drmm_connector_init")
Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>

Reviewed-by: Thomas Zimmermann <tzimmermann@xxxxxxx>

---
  drivers/gpu/drm/drm_connector.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index e3142c8142b3..61c29ce74b03 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -435,7 +435,7 @@ int drmm_connector_init(struct drm_device *dev,
  	if (drm_WARN_ON(dev, funcs && funcs->destroy))
  		return -EINVAL;
- ret = __drm_connector_init(dev, connector, funcs, connector_type, NULL);
+	ret = __drm_connector_init(dev, connector, funcs, connector_type, ddc);
  	if (ret)
  		return ret;

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev

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