This has very little effect other than log the errors in case of failure,
and we then hope for the best.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/intel_display.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index d0082a025c83..7db292c469af 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11336,12 +11336,21 @@ int intel_modeset_vga_set_state(struct drm_device
*dev, bool state)
struct drm_i915_private *dev_priv = dev->dev_private;
u16 gmch_ctrl;
- pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
+ if (pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL,
&gmch_ctrl)) {
+ DRM_ERROR("failed to read control word\n");
+ return -EIO;
+ }
+
if (state)
gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
else
gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
- pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);
+
+ if (pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL,
gmch_ctrl)) {
+ DRM_ERROR("failed to write control word\n");
+ return -EIO;
+ }
+
return 0;
}
--
1.8.5.1
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