[PATCH] pcmcia: match "anonymous" cards

If a card doesn't provide _any_ information about itself, assume it is a
so-called "anonymous" card.  pcmciamtd will bind to it if it is configured to
do so.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 10 insertions, 0 deletions

diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index f657a2a77b2b..66680699e913 100644
--- a/drivers/pcmcia/ds.c
+++ b/drivers/pcmcia/ds.c
@@ -746,6 +746,15 @@ static inline int pcmcia_devmatch(struct pcmcia_device *dev,
                 }
         }
 
+        if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
+                int i;
+                for (i=0; i<4; i++)
+                        if (dev->prod_id[i])
+                                return 0;
+                if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
+                        return 0;
+        }
+
         dev->dev.driver_data = (void *) did;
 
         return 1;
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index c0106d68bb6d..8a8dc82a941d 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -209,5 +209,6 @@ struct pcmcia_device_id {
 #define PCMCIA_DEV_ID_MATCH_PROD_ID4    0x0080
 #define PCMCIA_DEV_ID_MATCH_DEVICE_NO   0x0100
 #define PCMCIA_DEV_ID_MATCH_FAKE_CIS    0x0200
+#define PCMCIA_DEV_ID_MATCH_ANONYMOUS   0x0400
 
 #endif /* LINUX_MOD_DEVICETABLE_H */