1 files changed, 15 insertions, 8 deletions

diff --git a/drivers/pcmcia/cardbus.c b/drivers/pcmcia/cardbus.c
index 4cd70d056810..a73b040ddbfb 100644
--- a/drivers/pcmcia/cardbus.c
+++ b/drivers/pcmcia/cardbus.c
@@ -184,26 +184,33 @@ fail:
     
 =====================================================================*/
 
-/*
- * Since there is only one interrupt available to CardBus
- * devices, all devices downstream of this device must
- * be using this IRQ.
- */
-static void cardbus_assign_irqs(struct pci_bus *bus, int irq)
+static void cardbus_config_irq_and_cls(struct pci_bus *bus, int irq)
 {
         struct pci_dev *dev;
 
         list_for_each_entry(dev, &bus->devices, bus_list) {
                 u8 irq_pin;
 
+                /*
+                 * Since there is only one interrupt available to
+                 * CardBus devices, all devices downstream of this
+                 * device must be using this IRQ.
+                 */
                 pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &irq_pin);
                 if (irq_pin) {
                         dev->irq = irq;
                         pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
                 }
 
+                /*
+                 * Some controllers transfer very slowly with 0 CLS.
+                 * Configure it.  This may fail as CLS configuration
+                 * is mandatory only for MWI.
+                 */
+                pci_set_cacheline_size(dev);
+
                 if (dev->subordinate)
-                        cardbus_assign_irqs(dev->subordinate, irq);
+                        cardbus_config_irq_and_cls(dev->subordinate, irq);
         }
 }
 
@@ -228,7 +235,7 @@ int __ref cb_alloc(struct pcmcia_socket * s)
          */
         pci_bus_size_bridges(bus);
         pci_bus_assign_resources(bus);
-        cardbus_assign_irqs(bus, s->pci_irq);
+        cardbus_config_irq_and_cls(bus, s->pci_irq);
 
         /* socket specific tune function */
         if (s->tune_bridge)