--- zzzz-none-000/linux-2.4.17/drivers/ide/ide-dma.c	2001-09-09 17:43:02.000000000 +0000
+++ sangam-fb-322/linux-2.4.17/drivers/ide/ide-dma.c	2004-11-24 13:23:46.000000000 +0000
@@ -689,11 +689,10 @@
 void ide_setup_dma (ide_hwif_t *hwif, unsigned long dma_base, unsigned int num_ports)
 {
 	printk("    %s: BM-DMA at 0x%04lx-0x%04lx", hwif->name, dma_base, dma_base + num_ports - 1);
-	if (check_region(dma_base, num_ports)) {
+	if (!request_region(dma_base, num_ports, hwif->name)) {
 		printk(" -- ERROR, PORT ADDRESSES ALREADY IN USE\n");
 		return;
 	}
-	request_region(dma_base, num_ports, hwif->name);
 	hwif->dma_base = dma_base;
 	hwif->dmatable_cpu = pci_alloc_consistent(hwif->pci_dev,
 						  PRD_ENTRIES * PRD_BYTES,
@@ -774,9 +773,15 @@
 		hwif->dma_extra = extra;
 
 		switch(dev->device) {
+			/*
+			 * This is buggy.  Device numbers are not unique
+			 * between vendors.  We should be checking
+			 * both dev->vendor and dev->device
+			 */
 			case PCI_DEVICE_ID_AL_M5219:
 			case PCI_DEVICE_ID_AMD_VIPER_7409:
 			case PCI_DEVICE_ID_CMD_643:
+			case PCI_DEVICE_ID_WINBOND_82C105:
 				outb(inb(dma_base+2) & 0x60, dma_base+2);
 				if (inb(dma_base+2) & 0x80) {
 					printk("%s: simplex device: DMA forced\n", name);