pcmcia: use pre-determined values

A few PCMCIA network drivers can make use of values provided by the pcmcia
core, instead of tedious, independent CIS parsing.

xirc32ps_cs.c: manf_id

hostap_cs.c: multifunction count

b43/pcmcia.c: ConfigBase address and "Present"

smc91c92_cs.c:  By default, mhz_setup() can use VERS_1 as it is stored
in struct pcmcia_device. Only some cards require workarounds, such as
reading out VERS_1 twice.

CC: David S. Miller <davem@davemloft.net>
CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
Acked-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

2 files changed, 18 insertions, 5 deletions

diff --git a/drivers/net/pcmcia/smc91c92_cs.c b/drivers/net/pcmcia/smc91c92_cs.c
index 7bde2cd..af03759 100644
--- a/drivers/net/pcmcia/smc91c92_cs.c
+++ b/drivers/net/pcmcia/smc91c92_cs.c
@@ -545,6 +545,14 @@ static int mhz_setup(struct pcmcia_device *link)
     u_char *buf, *station_addr;
     int rc;
 
+    /* Read the station address from the CIS.  It is stored as the last
+       (fourth) string in the Version 1 Version/ID tuple. */
+    if ((link->prod_id[3]) &&
+	(cvt_ascii_address(dev, link->prod_id[3]) == 0))
+	    return 0;
+
+    /* Workarounds for broken cards start here. */
+
     cfg_mem = kmalloc(sizeof(struct smc_cfg_mem), GFP_KERNEL);
     if (!cfg_mem)
 	return -1;
@@ -557,8 +565,7 @@ static int mhz_setup(struct pcmcia_device *link)
     tuple->TupleData = (cisdata_t *)buf;
     tuple->TupleDataMax = 255;
 
-    /* Read the station address from the CIS.  It is stored as the last
-       (fourth) string in the Version 1 Version/ID tuple. */
+    /* Ugh -- the EM1144 card has two VERS_1 tuples!?! */
     tuple->DesiredTuple = CISTPL_VERS_1;
     if (first_tuple(link, tuple, parse) != 0) {
 	rc = -1;
diff --git a/drivers/net/pcmcia/xirc2ps_cs.c b/drivers/net/pcmcia/xirc2ps_cs.c
index cf84231..5e20323 100644
--- a/drivers/net/pcmcia/xirc2ps_cs.c
+++ b/drivers/net/pcmcia/xirc2ps_cs.c
@@ -792,13 +792,12 @@ xirc2ps_config(struct pcmcia_device * link)
     tuple.TupleOffset = 0;
 
     /* Is this a valid	card */
-    tuple.DesiredTuple = CISTPL_MANFID;
-    if ((err=first_tuple(link, &tuple, &parse))) {
+    if (link->has_manf_id == 0) {
 	printk(KNOT_XIRC "manfid not found in CIS\n");
 	goto failure;
     }
 
-    switch(parse.manfid.manf) {
+    switch (link->manf_id) {
       case MANFID_XIRCOM:
 	local->manf_str = "Xircom";
 	break;
@@ -822,6 +821,13 @@ xirc2ps_config(struct pcmcia_device * link)
     }
     DEBUG(0, "found %s card\n", local->manf_str);
 
+    /* needed for the additional fields to be parsed by set_card_type() */
+    tuple.DesiredTuple = CISTPL_MANFID;
+    err = first_tuple(link, &tuple, &parse)
+    if (err) {
+	printk(KNOT_XIRC "manfid not found in CIS\n");
+	goto failure;
+    }
     if (!set_card_type(link, buf)) {
 	printk(KNOT_XIRC "this card is not supported\n");
 	goto failure;