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path: root/drivers/pcmcia
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Diffstat (limited to 'drivers/pcmcia')
-rw-r--r--drivers/pcmcia/cardbus.c23
1 files changed, 15 insertions, 8 deletions
diff --git a/drivers/pcmcia/cardbus.c b/drivers/pcmcia/cardbus.c
index db77e1f3309..98789c031a7 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)