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drm: Populate fb->dev from drm_helper_mode_fill_fb_struct()

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Populating fb->dev before drm_framebuffer_init() allows us to use
fb->dev already while validating the framebuffer. Let's have
drm_helper_mode_fill_fb_struct() do that for us.

Also make drm_framebuffer_init() warn us if a different device
pointer is passed to it than was passed to
drm_helper_mode_fill_fb_struct().

v2: Reject fbs with invalid fb->dev (Laurent)

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v1)
Link: http://patchwork.freedesktop.org/patch/msgid/1479498793-31021-19-git-send-email-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2016-11-18 21:52:54 +02:00
parent d2e9f5fcc6
commit 95bce76015
2 changed files with 5 additions and 1 deletions
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5
drivers/gpu/drm/drm_framebuffer.c
View File

@ -631,8 +631,11 @@ int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
{
int ret;
if (WARN_ON_ONCE(fb->dev != dev))
return -EINVAL;
INIT_LIST_HEAD(&fb->filp_head);
fb->dev = dev;
fb->funcs = funcs;
ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,

1
drivers/gpu/drm/drm_modeset_helper.c
View File

@ -90,6 +90,7 @@ void drm_helper_mode_fill_fb_struct(struct drm_device *dev,
fb->bits_per_pixel = info->cpp[0] * 8;
}
fb->dev = dev;
fb->width = mode_cmd->width;
fb->height = mode_cmd->height;
for (i = 0; i < 4; i++) {