From: Imre Deak Date: Fri, 29 Jan 2016 12:52:28 +0000 (+0200) Subject: drm/i915: Add debug info for failed MSI enabling X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b074eae12f1e9f8eb1aafa3d7b922427f9b8e68a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/i915: Add debug info for failed MSI enabling 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 Reviewed-by: David Weinehall Link: http://patchwork.freedesktop.org/patch/msgid/1454071949-24677-3-git-send-email-imre.deak@intel.com --- diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 4e3c7418729f..a42eb58f7c41 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -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);