fix flash/nand name parsing

Start driver.num check from end, and make sure the numeric part is
actually a number.  Fix problems trying to parse bank names.

diff --git a/src/flash/common.c b/src/flash/common.c
index 253ed9d875b4dfda15bd1df21a2da2b60782b41b..072e6912fd45079dff8ca4d76270fd9993233991 100644 (file)
--- a/src/flash/common.c
+++ b/src/flash/common.c
@@ -25,9 +25,11 @@
 
 unsigned get_flash_name_index(const char *name)
 {
-       const char *index = strchr(name, '.');
+       const char *index = strrchr(name, '.');
        if (NULL == index)
                return 0;
+       if (index[1] < '0' || index[1] > '9')
+               return ~0U;
        unsigned requested;
        int retval = parse_uint(index + 1, &requested);
        // detect parsing error by forcing past end of bank list