[PATCH] yenta: no CardBus if IRQ fails

If probing for the correct interrupt fails on yenta bridges, the driver falls
back to polling for interrupt actions.  However, CardBus cards cannot be used
then.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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, 18 insertions, 7 deletions

diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c
index 4d1cc5304e17..e39178fc59d0 100644
--- a/drivers/pcmcia/cs.c
+++ b/drivers/pcmcia/cs.c
@@ -215,6 +215,13 @@ int pcmcia_register_socket(struct pcmcia_socket *socket)
         list_add_tail(&socket->socket_list, &pcmcia_socket_list);
         up_write(&pcmcia_socket_list_rwsem);
 
+#ifndef CONFIG_CARDBUS
+        /*
+         * If we do not support Cardbus, ensure that
+         * the Cardbus socket capability is disabled.
+         */
+        socket->features &= ~SS_CAP_CARDBUS;
+#endif
 
         /* set proper values in socket->dev */
         socket->dev.class_data = socket;
@@ -448,11 +455,11 @@ static int socket_setup(struct pcmcia_socket *skt, int initial_delay)
         }
 
         if (status & SS_CARDBUS) {
+                if (!(skt->features & SS_CAP_CARDBUS)) {
+                        cs_err(skt, "cardbus cards are not supported.\n");
+                        return CS_BAD_TYPE;
+                }
                 skt->state |= SOCKET_CARDBUS;
-#ifndef CONFIG_CARDBUS
-                cs_err(skt, "cardbus cards are not supported.\n");
-                return CS_BAD_TYPE;
-#endif
         }
 
         /*
diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c
index 1d593e1dc3d9..0e7aa8176692 100644
--- a/drivers/pcmcia/yenta_socket.c
+++ b/drivers/pcmcia/yenta_socket.c
@@ -868,14 +868,11 @@ static int yenta_probe_cb_irq(struct yenta_socket *socket)
  */
 static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
 {
-        socket->socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD | SS_CAP_CARDBUS;
-        socket->socket.map_size = 0x1000;
         socket->socket.pci_irq = socket->cb_irq;
         if (isa_probe)
                 socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
         else
                 socket->socket.irq_mask = 0;
-        socket->socket.cb_dev = socket->dev;
 
         printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n",
                socket->socket.irq_mask, socket->cb_irq);
@@ -941,6 +938,9 @@ static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_i
         socket->socket.dev.dev = &dev->dev;
         socket->socket.driver_data = socket;
         socket->socket.owner = THIS_MODULE;
+        socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
+        socket->socket.map_size = 0x1000;
+        socket->socket.cb_dev = dev;
 
         /* prepare struct yenta_socket */
         socket->dev = dev;
@@ -1011,6 +1011,10 @@ static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_i
                 socket->poll_timer.data = (unsigned long)socket;
                 socket->poll_timer.expires = jiffies + HZ;
                 add_timer(&socket->poll_timer);
+                printk(KERN_INFO "Yenta: no PCI IRQ, CardBus support disabled for this socket.\n"
+                       KERN_INFO "Yenta: check your BIOS CardBus, BIOS IRQ or ACPI settings.\n");
+        } else {
+                socket->socket.features |= SS_CAP_CARDBUS;
         }
 
         /* Figure out what the dang thing can do for the PCMCIA layer... */