+/* Works only for digits and letters, but small and fast */
+#define TOLOWER(x) ((x) | 0x20)
+
+static void __init parse_quirks(void)
+{
+ int n, i;
+ char *p;
+
+ if (!quirks)
+ return;
+
+ /* Count the ':' characters to get 2 * the number of entries */
+ n = 0;
+ for (p = quirks; *p; ++p) {
+ if (*p == ':')
+ ++n;
+ }
+ n /= 2;
+ if (n == 0)
+ return; /* Don't allocate 0 bytes */
+
+ quirks_list = kmalloc(n * sizeof(*quirks_list), GFP_KERNEL);
+ if (!quirks_list)
+ return;
+
+ p = quirks;
+ quirks_end = quirks_list;
+ for (i = 0; i < n && *p; ++i) {
+ unsigned f = 0;
+
+ /* Each entry consists of VID:PID:flags */
+ quirks_end->vid = simple_strtoul(p, &p, 16);
+ if (*p != ':')
+ goto skip_to_next;
+ quirks_end->pid = simple_strtoul(p+1, &p, 16);
+ if (*p != ':')
+ goto skip_to_next;
+
+ while (*++p && *p != ',') {
+ switch (TOLOWER(*p)) {
+ case 'c':
+ f |= US_FL_FIX_CAPACITY;
+ break;
+ case 'i':
+ f |= US_FL_IGNORE_DEVICE;
+ break;
+ case 'l':
+ f |= US_FL_NOT_LOCKABLE;
+ break;
+ case 'm':
+ f |= US_FL_MAX_SECTORS_64;
+ break;
+ case 'r':
+ f |= US_FL_IGNORE_RESIDUE;
+ break;
+ case 's':
+ f |= US_FL_SINGLE_LUN;
+ break;
+ case 'w':
+ f |= US_FL_NO_WP_DETECT;
+ break;
+ /* Ignore unrecognized flag characters */
+ }
+ }
+ quirks_end->fflags = f;
+ ++quirks_end;
+
+ skip_to_next:
+ /* Entries are separated by commas */
+ while (*p) {
+ if (*p++ == ',')
+ break;
+ }
+ } /* for (i = 0; ...) */
+}
+