patch-2.4.22 linux-2.4.22/arch/mips64/kernel/pci-dma.c

• Lines: 19
• Date: 2003-08-25 04:44:40.000000000 -0700
• Orig file: linux-2.4.21/arch/mips64/kernel/pci-dma.c
• Orig date: 2002-11-28 15:53:10.000000000 -0800

diff -urN linux-2.4.21/arch/mips64/kernel/pci-dma.c linux-2.4.22/arch/mips64/kernel/pci-dma.c
@@ -21,6 +21,7 @@
 {
 	void *ret;
 	int gfp = GFP_ATOMIC;
+	struct pci_bus *bus = NULL;
 
 #ifdef CONFIG_ISA
 	if (hwdev == NULL || hwdev->dma_mask != 0xffffffff)
@@ -30,7 +31,9 @@
 
 	if (ret != NULL) {
 		memset(ret, 0, size);
-		*dma_handle = bus_to_baddr(hwdev->bus->number, __pa(ret));
+		if (hwdev)
+			bus = hwdev->bus;
+		*dma_handle = bus_to_baddr(bus, __pa(ret));
 #ifdef CONFIG_NONCOHERENT_IO
 		dma_cache_wback_inv((unsigned long) ret, size);
 		ret = UNCAC_ADDR(ret);