openwrt/target/linux/brcm47xx/patches-2.6.33/940-bcm47xx-yenta.patch

--- a/drivers/pcmcia/yenta_socket.c
+++ b/drivers/pcmcia/yenta_socket.c
@@ -911,6 +911,8 @@ static unsigned int yenta_probe_irq(stru
 	 * Probe for usable interrupts using the force
 	 * register to generate bogus card status events.
 	 */
+#ifndef CONFIG_BCM47XX
+	/* WRT54G3G does not like this */
 	cb_writel(socket, CB_SOCKET_EVENT, -1);
 	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
 	exca_writeb(socket, I365_CSCINT, 0);
@@ -925,6 +927,7 @@ static unsigned int yenta_probe_irq(stru
 	}
 	cb_writel(socket, CB_SOCKET_MASK, 0);
 	exca_writeb(socket, I365_CSCINT, 0);
+#endif
 
 	mask = probe_irq_mask(val) & 0xffff;
 
@@ -1005,6 +1008,10 @@ static void yenta_get_socket_capabilitie
 	else
 		socket->socket.irq_mask = 0;
 
+	/* irq mask probing is broken for the WRT54G3G */
+	if (socket->socket.irq_mask == 0)
+		socket->socket.irq_mask = 0x6f8;
+
 	dev_printk(KERN_INFO, &socket->dev->dev,
 		   "ISA IRQ mask 0x%04x, PCI irq %d\n",
 		   socket->socket.irq_mask, socket->cb_irq);
@@ -1243,6 +1250,15 @@ static int __devinit yenta_probe(struct 
 	dev_printk(KERN_INFO, &dev->dev,
 		   "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
 
+	/* Generate an interrupt on card insert/remove */
+	config_writew(socket, CB_SOCKET_MASK, CB_CSTSMASK | CB_CDMASK);
+
+	/* Set up Multifunction Routing Status Register */
+	config_writew(socket, 0x8C, 0x1000 /* MFUNC3 to GPIO3 */ | 0x2 /* MFUNC0 to INTA */);
+
+	/* Switch interrupts to parallelized */
+	config_writeb(socket, 0x92, 0x64);
+
 	yenta_fixup_parent_bridge(dev->subordinate);
 
 	/* Register it with the pcmcia layer.. */