diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 33cb97388fc93b875cecf4965bfaf8c42f287642..ed9262c42b7b0701d3beb91e69e73287de9c516d 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -798,28 +798,29 @@ static int i965_reset_complete(struct drm_device *dev) static int i965_do_reset(struct drm_device *dev) { int ret; - u8 gdrst; /* * Set the domains we want to reset (GRDOM/bits 2 and 3) as * well as the reset bit (GR/bit 0). Setting the GR bit * triggers the reset; when done, the hardware will clear it. */ - pci_read_config_byte(dev->pdev, I965_GDRST, &gdrst); pci_write_config_byte(dev->pdev, I965_GDRST, - gdrst | GRDOM_RENDER | - GRDOM_RESET_ENABLE); + GRDOM_RENDER | GRDOM_RESET_ENABLE); ret = wait_for(i965_reset_complete(dev), 500); if (ret) return ret; /* We can't reset render&media without also resetting display ... */ - pci_read_config_byte(dev->pdev, I965_GDRST, &gdrst); pci_write_config_byte(dev->pdev, I965_GDRST, - gdrst | GRDOM_MEDIA | - GRDOM_RESET_ENABLE); + GRDOM_MEDIA | GRDOM_RESET_ENABLE); - return wait_for(i965_reset_complete(dev), 500); + ret = wait_for(i965_reset_complete(dev), 500); + if (ret) + return ret; + + pci_write_config_byte(dev->pdev, I965_GDRST, 0); + + return 0; } static int ironlake_do_reset(struct drm_device *dev)