[SERIAL] serial_cs: Use clean up multiport card detection

- Use ARRAY_SIZE() instead of home grown based version.
- use parse->manfid.card rather than le16_to_cpu(buf[1]) -
  manfid.card is already converted to this format.
- use info->prodid in subsequent tests rather than
  parse->manfid.card.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 5 insertions, 6 deletions

diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c
index cbf260bc225d..82bb603fc1ae 100644
--- a/drivers/serial/serial_cs.c
+++ b/drivers/serial/serial_cs.c
@@ -95,7 +95,6 @@ static const struct multi_id multi_id[] = {
         { MANFID_INTEL,   PRODID_INTEL_DUAL_RS232,      2 },
         { MANFID_NATINST, PRODID_NATINST_QUAD_RS232,    4 }
 };
-#define MULTI_COUNT (sizeof(multi_id)/sizeof(struct multi_id))
 
 struct serial_info {
         struct pcmcia_device    *p_dev;
@@ -622,13 +621,13 @@ static int serial_config(struct pcmcia_device * link)
         tuple->DesiredTuple = CISTPL_MANFID;
         if (first_tuple(link, tuple, parse) == CS_SUCCESS) {
                 info->manfid = parse->manfid.manf;
-                info->prodid = le16_to_cpu(buf[1]);
-                for (i = 0; i < MULTI_COUNT; i++)
+                info->prodid = parse->manfid.card;
+                for (i = 0; i < ARRAY_SIZE(multi_id); i++)
                         if ((info->manfid == multi_id[i].manfid) &&
-                            (parse->manfid.card == multi_id[i].prodid))
+                            (info->prodid == multi_id[i].prodid)) {
+                                info->multi = multi_id[i].multi;
                                 break;
-                if (i < MULTI_COUNT)
-                        info->multi = multi_id[i].multi;
+                        }
         }
 
         /* Another check for dual-serial cards: look for either serial or