[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 <[email protected]>
Cc: Dominik Brodowski <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
index 599b116d9747211514a6522625e6830756f0d492..c0f4eb49177bfffb2a6b8434c9987243c1c40f32 100644 (file)
--- 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;