From: Ville Syrjälä ville.syrjala@linux.intel.com
Pull all the error checking out from __set_plane_internal() to a helper function. We'll have another user of this soon.
Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com --- drivers/gpu/drm/drm_plane.c | 80 +++++++++++++++++++++++++++------------------ 1 file changed, 49 insertions(+), 31 deletions(-)
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index df0b4ebbedbf..5c97a0131484 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -583,6 +583,52 @@ int drm_plane_check_pixel_format(struct drm_plane *plane, return 0; }
+static int __setplane_check(struct drm_plane *plane, + struct drm_crtc *crtc, + struct drm_framebuffer *fb, + int32_t crtc_x, int32_t crtc_y, + uint32_t crtc_w, uint32_t crtc_h, + uint32_t src_x, uint32_t src_y, + uint32_t src_w, uint32_t src_h) +{ + int ret; + + /* Check whether this plane is usable on this CRTC */ + if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { + DRM_DEBUG_KMS("Invalid crtc for plane\n"); + return -EINVAL; + } + + /* Check whether this plane supports the fb pixel format. */ + ret = drm_plane_check_pixel_format(plane, fb->format->format, + fb->modifier); + if (ret) { + struct drm_format_name_buf format_name; + + DRM_DEBUG_KMS("Invalid pixel format %s, modifier 0x%llx\n", + drm_get_format_name(fb->format->format, + &format_name), + fb->modifier); + return ret; + } + + /* Give drivers some help against integer overflows */ + if (crtc_w > INT_MAX || + crtc_x > INT_MAX - (int32_t) crtc_w || + crtc_h > INT_MAX || + crtc_y > INT_MAX - (int32_t) crtc_h) { + DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", + crtc_w, crtc_h, crtc_x, crtc_y); + return -ERANGE; + } + + ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb); + if (ret) + return ret; + + return 0; +} + /* * __setplane_internal - setplane handler for internal callers * @@ -616,37 +662,9 @@ static int __setplane_internal(struct drm_plane *plane, goto out; }
- /* Check whether this plane is usable on this CRTC */ - if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { - DRM_DEBUG_KMS("Invalid crtc for plane\n"); - ret = -EINVAL; - goto out; - } - - /* Check whether this plane supports the fb pixel format. */ - ret = drm_plane_check_pixel_format(plane, fb->format->format, - fb->modifier); - if (ret) { - struct drm_format_name_buf format_name; - DRM_DEBUG_KMS("Invalid pixel format %s, modifier 0x%llx\n", - drm_get_format_name(fb->format->format, - &format_name), - fb->modifier); - goto out; - } - - /* Give drivers some help against integer overflows */ - if (crtc_w > INT_MAX || - crtc_x > INT_MAX - (int32_t) crtc_w || - crtc_h > INT_MAX || - crtc_y > INT_MAX - (int32_t) crtc_h) { - DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", - crtc_w, crtc_h, crtc_x, crtc_y); - ret = -ERANGE; - goto out; - } - - ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb); + ret = __setplane_check(plane, crtc, fb, + crtc_x, crtc_y, crtc_w, crtc_h, + src_x, src_y, src_w, src_h); if (ret) goto out;