From 10e8cb7e79391071b950a28a4d85790dd38fb714 Mon Sep 17 00:00:00 2001 From: Daniel Stone Date: Fri, 22 May 2015 13:34:50 +0100 Subject: [PATCH] drm: Return error value from blob creation Change drm_property_create_blob to return an ERR_PTR-encoded error on failure, so we can pass the failure reason down. Signed-off-by: Daniel Stone Cc: Maarten Lankhorst Tested-by: Sean Paul Signed-off-by: Daniel Vetter --- drivers/gpu/drm/drm_crtc.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 0844108e19e0..f661589b1dea 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -4154,6 +4154,10 @@ done: * @dev: DRM device to create property for * @length: Length to allocate for blob data * @data: If specified, copies data into blob + * + * Returns: + * New blob property with a single reference on success, or an ERR_PTR + * value on failure. */ struct drm_property_blob * drm_property_create_blob(struct drm_device *dev, size_t length, @@ -4163,11 +4167,11 @@ drm_property_create_blob(struct drm_device *dev, size_t length, int ret; if (!length) - return NULL; + return ERR_PTR(-EINVAL); blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); if (!blob) - return NULL; + return ERR_PTR(-ENOMEM); blob->length = length; blob->dev = dev; @@ -4181,7 +4185,7 @@ drm_property_create_blob(struct drm_device *dev, size_t length, if (ret) { kfree(blob); mutex_unlock(&dev->mode_config.blob_lock); - return NULL; + return ERR_PTR(-EINVAL); } kref_init(&blob->refcount); @@ -4370,8 +4374,8 @@ static int drm_property_replace_global_blob(struct drm_device *dev, if (length && data) { new_blob = drm_property_create_blob(dev, length, data); - if (!new_blob) - return -EINVAL; + if (IS_ERR(new_blob)) + return PTR_ERR(new_blob); } /* This does not need to be synchronised with blob_lock, as the