[Qemu-devel] [PATCH] ccid-card-emulated: handle no backend (fixes segfault)

[Alon Levy <alevy@redhat.com>]

During initialization if no "backend=something" attribute is supplied
don't try to call strcmp with second argument being NULL.

Signed-off-by: Alon Levy <alevy@redhat.com>
---
 hw/ccid-card-emulated.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/hw/ccid-card-emulated.c b/hw/ccid-card-emulated.c
index 0b07184..ba56dca 100644
--- a/hw/ccid-card-emulated.c
+++ b/hw/ccid-card-emulated.c
@@ -476,6 +476,9 @@ static uint32_t parse_enumeration(char *str,
 {
     uint32_t ret = not_found_value;
 
+    if (!str) {
+        return ret;
+    }
     while (table->name != NULL) {
         if (strcmp(table->name, str) == 0) {
             ret = table->value;
-- 
1.7.5.1