diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index c8c4112de110..9070f503d332 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -121,6 +121,8 @@ i915_l3_read(struct file *filp, struct kobject *kobj,
 	uint32_t misccpctl;
 	int i, ret;
 
+	count = round_down(count, 4);
+
 	ret = l3_access_valid(drm_dev, offset);
 	if (ret)
 		return ret;