drm/i915/gvt: fix bad 32 bit shift in gtt

Since ioread32 returns a 32-bit value, it is impossible to left-shift
this value by 32 bits (it produces a compilation error). Casting the
return value of ioread32 fix this issue.

Signed-off-by: Jérémy Lefaure <[email protected]>
Signed-off-by: Zhenyu Wang <[email protected]>

diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 2cc761328569c972cc7cb48962dfe7b53acec5f4..b35bda0ce46b5de2014b30b43ad4caace9cfa32e 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -276,7 +276,7 @@ static u64 read_pte64(struct drm_i915_private *dev_priv, unsigned long index)
        pte = readq(addr);
 #else
        pte = ioread32(addr);
-       pte |= ioread32(addr + 4) << 32;
+       pte |= (u64)ioread32(addr + 4) << 32;
 #endif
        return pte;
 }