X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fstring.c;h=dcbe695695d59851d630afe585569daac30a6620;hb=8fb7e4488e20229828e54187b6aa3ed5cd7cb315;hp=dc4a86341f914f0c26b92977d6f99dcc4df482c2;hpb=b4fdcb02f1e39c27058a885905bd0277370ba441;p=pandora-kernel.git

diff --git a/lib/string.c b/lib/string.c
index dc4a86341f91..dcbe695695d5 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -583,6 +583,22 @@ void *memset(void *s, int c, size_t count)
 EXPORT_SYMBOL(memset);
 #endif
 
+/**
+ * memzero_explicit - Fill a region of memory (e.g. sensitive
+ *		      keying data) with 0s.
+ * @s: Pointer to the start of the area.
+ * @count: The size of the area.
+ *
+ * memzero_explicit() doesn't need an arch-specific version as
+ * it just invokes the one of memset() implicitly.
+ */
+void memzero_explicit(void *s, size_t count)
+{
+	memset(s, 0, count);
+	barrier();
+}
+EXPORT_SYMBOL(memzero_explicit);
+
 #ifndef __HAVE_ARCH_MEMCPY
 /**
  * memcpy - Copy one area of memory to another