From 049b77cb2ad8bd36308a4a424ca4f2eb4d65d2af Mon Sep 17 00:00:00 2001 From: Ben Gamari Date: Thu, 11 Jun 2009 00:44:26 -0400 Subject: [PATCH] drm/i915: Warn when inteldrmfb fails to restore its framebuffer config While sifting through the inteldrmfb code trying to solve #22040 I found that the fb restore path doesn't check the return value of drm_crtc_helper_set_config(), which seems to have all sorts of potential failure modes. We should warn someone if one of these is triggered. Signed-Off-By: Ben Gamari Acked-by: Jesse Barnes [anholt: hand-applied, failures are mine] Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/intel_fb.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c index 8e28e59..1af7d68 100644 --- a/drivers/gpu/drm/i915/intel_fb.c +++ b/drivers/gpu/drm/i915/intel_fb.c @@ -870,7 +870,11 @@ static int intelfb_single_fb_probe(struct drm_device *dev) */ void intelfb_restore(void) { - drm_crtc_helper_set_config(&kernelfb_mode); + int ret; + if ((ret = drm_crtc_helper_set_config(&kernelfb_mode)) != 0) { + printk(KERN_ERR "Failed to restore crtc configuration: %d\n", + ret); + } } static void intelfb_restore_work_fn(struct work_struct *ignored) -- 1.8.2.3