[PATCH] umem: use DMA_{32,64}BIT_MASK and correct call to pci_set_dma_mask()

From: Tobias Klauser <tklauser@nuerscht.ch>

Since nobody replied to Domen's request for clarification [1], here's a
patch to fix drivers/block/umem.c to correctly evaluate the return value
of pci_set_dma_mask() both times. The function returns non-null on
error, so this seems to be correct.

[1] http://lists.osdl.org/mailman/htdig/kernel-janitors/2005-May/004119.html

Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

Index: linux-kj/drivers/block/umem.c
===================================================================
--- linux-kj.orig/drivers/block/umem.c	2005-10-28 16:25:06.000000000 +0400
+++ linux-kj/drivers/block/umem.c	2005-10-28 16:31:24.000000000 +0400
@@ -892,8 +892,8 @@ static int __devinit mm_pci_probe(struct
 	printk(KERN_INFO "Micro Memory(tm) controller #%d found at %02x:%02x (PCI Mem Module (Battery Backup))\n",
 	       card->card_number, dev->bus->number, dev->devfn);
 
-	if (pci_set_dma_mask(dev, 0xffffffffffffffffLL) &&
-	    !pci_set_dma_mask(dev, 0xffffffffLL)) {
+	if (pci_set_dma_mask(dev, DMA_64BIT_MASK) &&
+	    pci_set_dma_mask(dev, DMA_32BIT_MASK)) {
 		printk(KERN_WARNING "MM%d: NO suitable DMA found\n",num_cards);
 		return  -ENOMEM;
 	}