]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commitdiff
drm/i915: Add debug info for failed MSI enabling
authorImre Deak <imre.deak@intel.com>
Fri, 29 Jan 2016 12:52:28 +0000 (14:52 +0200)
committerImre Deak <imre.deak@intel.com>
Tue, 2 Feb 2016 16:28:28 +0000 (18:28 +0200)
While not being able to enable MSI interrupts may be a normal
circumstance, for debugging it may still be a useful information, so
emit an info about this.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: David Weinehall <david.weinehall@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1454071949-24677-3-git-send-email-imre.deak@intel.com
drivers/gpu/drm/i915/i915_dma.c

index 4e3c7418729f89e97e8cf280214501b5b49464d9..a42eb58f7c4131feb29736b2bc92ab547d10f1a7 100644 (file)
@@ -1109,8 +1109,10 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
         * be lost or delayed, but we use them anyways to avoid
         * stuck interrupts on some machines.
         */
-       if (!IS_I945G(dev) && !IS_I945GM(dev))
-               pci_enable_msi(dev->pdev);
+       if (!IS_I945G(dev) && !IS_I945GM(dev)) {
+               if (pci_enable_msi(dev->pdev) < 0)
+                       DRM_DEBUG_DRIVER("can't enable MSI");
+       }
 
        intel_device_info_runtime_init(dev);