Merge drm/drm-next into drm-xe-next

Sync with drm-misc and drm-intel-next for common APIs and refactors.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/string.h b/include/linux/string.h
index 9edace076ddb..5855c5626b4b 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -279,6 +279,18 @@ static inline void memcpy_flushcache(void *dst, const void *src, size_t cnt)
 void *memchr_inv(const void *s, int c, size_t n);
 char *strreplace(char *str, char old, char new);
 
+/**
+ * mem_is_zero - Check if an area of memory is all 0's.
+ * @s: The memory area
+ * @n: The size of the area
+ *
+ * Return: True if the area of memory is all 0's.
+ */
+static inline bool mem_is_zero(const void *s, size_t n)
+{
+	return !memchr_inv(s, 0, n);
+}
+
 extern void kfree_const(const void *x);
 
 extern char *kstrdup(const char *s, gfp_t gfp) __malloc;