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[1/4] drm/i915: Fix the sgt.pfn sanity check

Message ID 20210119133106.66294-1-matthew.auld@intel.com (mailing list archive)
State New, archived
Headers show
Series [1/4] drm/i915: Fix the sgt.pfn sanity check | expand

Commit Message

Matthew Auld Jan. 19, 2021, 1:31 p.m. UTC 
From: Kui Wen <kui.wen@intel.com>

For the device local-memory case, sgt.pfn will always be equal to zero,
since we instead use sgt.dma. Also, for device local-memory it is
perfectly valid for it to start from zero anyway, so no need to add a
new check for that either.

Signed-off-by: Kui Wen <kui.wen@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_mm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/i915/i915_mm.c b/drivers/gpu/drm/i915/i915_mm.c
index 43039dc8c607..666808cb3a32 100644
--- a/drivers/gpu/drm/i915/i915_mm.c
+++ b/drivers/gpu/drm/i915/i915_mm.c
@@ -62,7 +62,7 @@  static int remap_sg(pte_t *pte, unsigned long addr, void *data)
 {
 	struct remap_pfn *r = data;
 
-	if (GEM_WARN_ON(!r->sgt.pfn))
+	if (GEM_WARN_ON(!r->sgt.sgp))
 		return -EINVAL;
 
 	/* Special PTE are not associated with any struct page */