From: Daniel Vetter Date: Wed, 9 Oct 2013 19:55:33 +0000 (+0200) Subject: drm/i915: check gem bo size when creating framebuffers X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=53155c0a5949d5cc3bd434d838e5b0c6e0542f9b;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/i915: check gem bo size when creating framebuffers It's better to catch such fallout early, and this way we can rely on the checking done by the drm core on fb->heigh/width at modeset time. If we ever support planar formats on intel we might want to look into a common helper to do all this, but for now this is good enough. v2: Take tiling into account, requested by Ville. v3: Fix tile height on gen2, spotted by Ville. Cc: Ville Syrjälä Requested-by: Chris Wilson Cc: Chris Wilson Reviewed-by: Ville Syrjälä Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 97ee553a81e5..94b39bedc9cc 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -9991,6 +9991,7 @@ int intel_framebuffer_init(struct drm_device *dev, struct drm_mode_fb_cmd2 *mode_cmd, struct drm_i915_gem_object *obj) { + int aligned_height, tile_height; int pitch_limit; int ret; @@ -10084,6 +10085,13 @@ int intel_framebuffer_init(struct drm_device *dev, if (mode_cmd->offsets[0] != 0) return -EINVAL; + tile_height = IS_GEN2(dev) ? 16 : 8; + aligned_height = ALIGN(mode_cmd->height, + obj->tiling_mode ? tile_height : 1); + /* FIXME drm helper for size checks (especially planar formats)? */ + if (obj->base.size < aligned_height * mode_cmd->pitches[0]) + return -EINVAL; + drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd); intel_fb->obj = obj; intel_fb->obj->framebuffer_references++;