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authorKeith Packard <keithp@keithp.com>2011-10-28 10:28:00 -0700
committerDave Airlie <airlied@redhat.com>2011-11-08 10:50:27 +0000
commita08185a3eb658854b29c05bcbfac0f85038ffe9f (patch)
tree9411bc4cd2dc3dd5e4f29654b7b32669fe1434bb /drivers/char
parent35b09c9bf619c4fc6040c52dcea6bd5bd6af7679 (diff)
downloadlinux-a08185a3eb658854b29c05bcbfac0f85038ffe9f.tar.bz2
agp: iommu_gfx_mapped only available if CONFIG_INTEL_IOMMU is set
Kernels with no iommu support cannot ever need the Ironlake work-around, so never enable it in that case. Might be better to completely remove the work-around from the kernel in this case? Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/agp/intel-gtt.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 3a8d44886010..c92424ca1a55 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -1186,10 +1186,11 @@ static void gen6_cleanup(void)
/* Certain Gen5 chipsets require require idling the GPU before
* unmapping anything from the GTT when VT-d is enabled.
*/
-extern int intel_iommu_gfx_mapped;
static inline int needs_idle_maps(void)
{
+#ifdef CONFIG_INTEL_IOMMU
const unsigned short gpu_devid = intel_private.pcidev->device;
+ extern int intel_iommu_gfx_mapped;
/* Query intel_iommu to see if we need the workaround. Presumably that
* was loaded first.
@@ -1198,7 +1199,7 @@ static inline int needs_idle_maps(void)
gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG) &&
intel_iommu_gfx_mapped)
return 1;
-
+#endif
return 0;
}