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drm/i915: Drop the iomem accessors when writing to the kmapped blt batch

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I presumed that we would be writing to the batch through the GTT having
bound it, so I converted it to use iomem. Even later as I spotted that
we didn't even move the batch to the GTT (now an issue since we default
to uncached memory on SNB) I still didn't realise that using iomem for
kmapped memory was incorrect. Fix it.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2010-11-02 11:17:23 +00:00
parent 8c1812ad48
commit 27153f72d0
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/i915/intel_ringbuffer.c
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@ -899,7 +899,7 @@ static int blt_ring_init(struct intel_ring_buffer *ring)
{
if (NEED_BLT_WORKAROUND(ring->dev)) {
struct drm_i915_gem_object *obj;
u32 __iomem *ptr;
u32 *ptr;
int ret;
obj = to_intel_bo(i915_gem_alloc_object(ring->dev, 4096));
@ -913,8 +913,8 @@ static int blt_ring_init(struct intel_ring_buffer *ring)
}
ptr = kmap(obj->pages[0]);
iowrite32(MI_BATCH_BUFFER_END, ptr);
iowrite32(MI_NOOP, ptr+1);
*ptr++ = MI_BATCH_BUFFER_END;
*ptr++ = MI_NOOP;
kunmap(obj->pages[0]);
ret = i915_gem_object_set_to_gtt_domain(&obj->base, false);