Merge git://git.denx.de/u-boot-fsl-qoriq

[oweals/u-boot.git] / lib / lzo / lzo1x_decompress.c

diff --git a/lib/lzo/lzo1x_decompress.c b/lib/lzo/lzo1x_decompress.c
index ccc90b8ee53fe8097d26f20d31b34dface2413b1..65fef0b0eb90591d2c03e6acaf8c267e7b2c9021 100644 (file)
--- a/lib/lzo/lzo1x_decompress.c
+++ b/lib/lzo/lzo1x_decompress.c
@@ -30,16 +30,29 @@ static const unsigned char lzop_magic[] = {
 
 #define HEADER_HAS_FILTER      0x00000800L
 
-static inline const unsigned char *parse_header(const unsigned char *src)
+
+bool lzop_is_valid_header(const unsigned char *src)
 {
-       u16 version;
        int i;
-
        /* read magic: 9 first bytes */
        for (i = 0; i < ARRAY_SIZE(lzop_magic); i++) {
                if (*src++ != lzop_magic[i])
-                       return NULL;
+                       return false;
        }
+       return true;
+}
+
+static inline const unsigned char *parse_header(const unsigned char *src)
+{
+       u16 version;
+       int i;
+
+       if (!lzop_is_valid_header(src))
+               return NULL;
+
+       /* skip header */
+       src += 9;
+
        /* get version (2bytes), skip library version (2),
         * 'need to be extracted' version (2) and
         * method (1) */