From: Arnd Bergmann <arnd@xxxxxxxx>
Randconfig builds on 32-bit machines show lots of warnings for
the i915 driver for incorrect bit masks like:
drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:2584:9: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
return hweight64(VDBOX_MASK(&i915->gt));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64'
#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
Since this is a 64-bit mask, use GENMASK_ULL instead of GENMASK.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 0a3ee4f9dc0a..ca32fa0d6a57 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1624,7 +1624,7 @@ tgl_revids_get(struct drm_i915_private *dev_priv)
unsigned int first__ = (first); \
unsigned int count__ = (count); \
((gt)->info.engine_mask & \
- GENMASK(first__ + count__ - 1, first__)) >> first__; \
+ GENMASK_ULL(first__ + count__ - 1, first__)) >> first__; \
})
#define VDBOX_MASK(gt) \
ENGINE_INSTANCES_MASK(gt, VCS0, I915_MAX_VCS)
--
2.29.2
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel
