From afea2ad53f1fef0b57d0e59fa062f54797158b14 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Tue, 15 May 2012 18:09:00 -0300 Subject: [PATCH] drm: WARN() when drm_connector_attach_property fails Also return void instead of int. We have more than 100 callers and no one checks for the return value. If this function fails the property won't be exposed by the get/set ioctls, but we should probably survive. If this starts happening, the solution will be to increase DRM_CONNECTOR_MAX_PROPERTY and recompile the Kernel. Signed-off-by: Paulo Zanoni Reviewed-by: Rob Clark Tested-by: Rob Clark Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_crtc.c | 10 +++++----- include/drm/drm_crtc.h | 4 ++-- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 0a22ef80d28e..37bb7ab3cbb0 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -2819,7 +2819,7 @@ void drm_property_destroy(struct drm_device *dev, struct drm_property *property) } EXPORT_SYMBOL(drm_property_destroy); -int drm_connector_attach_property(struct drm_connector *connector, +void drm_connector_attach_property(struct drm_connector *connector, struct drm_property *property, uint64_t init_val) { int i; @@ -2828,13 +2828,13 @@ int drm_connector_attach_property(struct drm_connector *connector, if (connector->property_ids[i] == 0) { connector->property_ids[i] = property->base.id; connector->property_values[i] = init_val; - break; + return; } } - if (i == DRM_CONNECTOR_MAX_PROPERTY) - return -EINVAL; - return 0; + WARN(1, "Failed to attach connector property. Please increase " + "DRM_CONNECTOR_MAX_PROPERTY by 1 for each time you see this " + "message\n"); } EXPORT_SYMBOL(drm_connector_attach_property); diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index f35e7edd7de2..036faec8a6fe 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -910,8 +910,8 @@ extern int drmfb_remove(struct drm_device *dev, struct drm_framebuffer *fb); extern void drm_crtc_probe_connector_modes(struct drm_device *dev, int maxX, int maxY); extern bool drm_crtc_in_use(struct drm_crtc *crtc); -extern int drm_connector_attach_property(struct drm_connector *connector, - struct drm_property *property, uint64_t init_val); +extern void drm_connector_attach_property(struct drm_connector *connector, + struct drm_property *property, uint64_t init_val); extern struct drm_property *drm_property_create(struct drm_device *dev, int flags, const char *name, int num_values); extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, -- GitLab