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-rw-r--r--include/drm/i915_drm.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index b1755f8..4e1b274 100644
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -93,6 +93,6 @@ extern bool i915_gpu_turbo_disable(void);
#define I845_TSEG_SIZE_1M (3 << 1)
#define INTEL_BSM 0x5c
-#define INTEL_BSM_MASK (0xFFFF << 20)
+#define INTEL_BSM_MASK (-(1u << 20))
#endif /* _I915_DRM_H_ */
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