From: Chuck Ebbert <cebbert@redhat.com>
Date: Thu, 14 Feb 2008 00:47:11 +0000 (-0500)
Subject: Fix station address detection in smc
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=a1a98b72dbd17e53cd92b8e78f404525ebcfd981;p=openwrt%2Fstaging%2Fblogic.git

Fix station address detection in smc

Megahertz EM1144 PCMCIA ethernet adapter needs special handling
because it has two VERS_1 tuples and the station address is in
the second one. Conversion to generic handling of these fields
broke it. Reverting that fixes the device.

  https://bugzilla.redhat.com/show_bug.cgi?id=233255

Thanks go to Jon Stanley for not giving up on this one until the
problem was found.

Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---

diff --git a/drivers/net/pcmcia/smc91c92_cs.c b/drivers/net/pcmcia/smc91c92_cs.c
index f18eca9831e8..250eb1954c34 100644
--- a/drivers/net/pcmcia/smc91c92_cs.c
+++ b/drivers/net/pcmcia/smc91c92_cs.c
@@ -559,8 +559,16 @@ static int mhz_setup(struct pcmcia_device *link)
 
     /* 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]) {
-	station_addr = link->prod_id[3];
+    tuple->DesiredTuple = CISTPL_VERS_1;
+    if (first_tuple(link, tuple, parse) != CS_SUCCESS) {
+	rc = -1;
+	goto free_cfg_mem;
+    }
+    /* Ugh -- the EM1144 card has two VERS_1 tuples!?! */
+    if (next_tuple(link, tuple, parse) != CS_SUCCESS)
+	first_tuple(link, tuple, parse);
+    if (parse->version_1.ns > 3) {
+	station_addr = parse->version_1.str + parse->version_1.ofs[3];
 	if (cvt_ascii_address(dev, station_addr) == 0) {
 		rc = 0;
 		goto free_cfg_mem;