[PATCH] fix pcmcia_request_irq() for multifunction card

multifunction cards need to have the same irq assigned to both functions.
the code tries that but fails because ret is still set to CS_IN_USE which
results in the function having the CB irq assigned.  yenta_set_socket then
just changes the irq routing to use the PCI interrupt but the first
functions irq handler is registered on an ISA interrupt.  boom.

Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
index 599b116d9747..c0f4eb49177b 100644
--- a/drivers/pcmcia/pcmcia_resource.c
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -832,7 +832,8 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
                 }
         }
 #endif
-        if (ret) {
+        /* only assign PCI irq if no IRQ already assigned */
+        if (ret && !s->irq.AssignedIRQ) {
                 if (!s->pci_irq)
                         return ret;
                 irq = s->pci_irq;