[PATCH] pcmcia: multifunction card handling fixes
s->functions needs to be initialized earlier, for the "let's see
how high it increases" approach means that pcmcia_request_irq()
(which makes use of this value) is confused, and might request
an exclusive IRQ first even though it is not supposed to.
Also, a CIS override autoloaded using the firmware loader may
allow for the use of more or less functions in a multifunction
card. Therefore, we may need to schedule a call to add this
second function later on, or simply remove the other function
(it's always the first -valid- function which reaches this
codepath).
Many thanks to Fabrice Bellet for debugging and testing patches.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
diff --git a/include/pcmcia/ss.h b/include/pcmcia/ss.h
index ede6398..623a0fc 100644
--- a/include/pcmcia/ss.h
+++ b/include/pcmcia/ss.h
@@ -262,9 +262,10 @@
u8 present:1, /* PCMCIA card is present in socket */
busy:1, /* "master" ioctl is used */
dead:1, /* pcmcia module is being unloaded */
- device_add_pending:1, /* a pseudo-multifunction-device
+ device_add_pending:1, /* a multifunction-device
* add event is pending */
- reserved:4;
+ mfc_pfc:1, /* the pending event adds a mfc (1) or pfc (0) */
+ reserved:3;
} pcmcia_state;
struct work_struct device_add; /* for adding further pseudo-multifunction