[Libva] [PATCH V3 2/3] Use the strncasecmp instead of strcasecmp to make it more robust

[Zhao Yakui]

At the same time the extra string arrary is removed.

Signed-off-by: Zhao Yakui <yakui.zhao at intel.com>
---
 src/i965_device_info.c |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/i965_device_info.c b/src/i965_device_info.c
index 690d4e2..29757e2 100755
--- a/src/i965_device_info.c
+++ b/src/i965_device_info.c
@@ -430,13 +430,12 @@ const static char *hsw_cpu_hook_list[] =  {
 
 static void hsw_hw_codec_preinit(VADriverContextP ctx, struct hw_codec_info *codec_info)
 {
-    char model_string[64], model_id[64];
+    char model_string[64];
     char *model_ptr, *tmp_ptr;
     int i, model_len, list_len;
     bool found;
 
     memset(model_string, 0, sizeof(model_string));
-    memset(model_id, 0, sizeof(model_id));
 
     /* If it can't detect cpu model_string, leave it alone */
     if (intel_driver_detect_cpustring(model_string))
@@ -448,7 +447,7 @@ static void hsw_hw_codec_preinit(VADriverContextP ctx, struct hw_codec_info *cod
     *tmp_ptr = '\0';
 
     /* strip the space character and convert to the lower case */
-    model_ptr = model_id;
+    model_ptr = model_string;
     model_len = strlen(model_string);
     for (i = 0; i < model_len; i++) {
          if (model_string[i] != ' ') {
@@ -460,9 +459,14 @@ static void hsw_hw_codec_preinit(VADriverContextP ctx, struct hw_codec_info *cod
 
     found = false;
     list_len = sizeof(hsw_cpu_hook_list) / sizeof(char *);
+    model_len = strlen(model_string);
     for (i = 0; i < list_len; i++) {
         model_ptr = (char *)hsw_cpu_hook_list[i];
-        if (strcasecmp(model_id, model_ptr) == 0) {
+
+        if (strlen(model_ptr) != model_len)
+	    continue;
+
+        if (strncasecmp(model_string, model_ptr, model_len) == 0) {
             found = true;
             break;
 	}
-- 
1.7.10.1