svn commit: r280352 - stable/9/sys/dev/drm2

[Jason A. Harmening]

Author: jah
Date: Sun Mar 22 18:31:28 2015
New Revision: 280352
URL: https://svnweb.freebsd.org/changeset/base/280352

Log:
  MFC r279919: Using parent DMA tag in drm_pci_alloc(). This can allow
  drm2 devices to work with Intel DMAR enabled for the system, as long as
  DMAR is disabled for the drm2 device.
  
  Reviewed by:	kib (mentor)

Modified:
  stable/9/sys/dev/drm2/drm_pci.c
Directory Properties:
  stable/9/sys/   (props changed)
  stable/9/sys/dev/   (props changed)

Modified: stable/9/sys/dev/drm2/drm_pci.c
==============================================================================
--- stable/9/sys/dev/drm2/drm_pci.c	Sun Mar 22 18:17:55 2015	(r280351)
+++ stable/9/sys/dev/drm2/drm_pci.c	Sun Mar 22 18:31:28 2015	(r280352)
@@ -76,7 +76,9 @@ drm_pci_alloc(struct drm_device *dev, si
 	if (mtx_owned(&dev->dma_lock))
 	    DRM_ERROR("called while holding dma_lock\n");
 
-	ret = bus_dma_tag_create(NULL, align, 0, /* tag, align, boundary */
+	ret = bus_dma_tag_create(
+	    bus_get_dma_tag(dev->device), /* parent */
+	    align, 0, /* align, boundary */
 	    maxaddr, BUS_SPACE_MAXADDR, /* lowaddr, highaddr */
 	    NULL, NULL, /* filtfunc, filtfuncargs */
 	    size, 1, size, /* maxsize, nsegs, maxsegsize */