scsi: use pci_zalloc_consistent

Remove the now unnecessary memset too.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Adam Radford <linuxraid@lsi.com>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Cc: Dario Ballabio <ballabio_dario@emc.com>
Cc: Michael Neuffer <mike@i-Connect.Net>
Cc: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
Cc: Neela Syam Kolli <megaraidlinux@lsi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/scsi/mesh.c b/drivers/scsi/mesh.c
index 7a6160f..57a95e2 100644
--- a/drivers/scsi/mesh.c
+++ b/drivers/scsi/mesh.c
@@ -1915,14 +1915,12 @@
 	/* We use the PCI APIs for now until the generic one gets fixed
 	 * enough or until we get some macio-specific versions
 	 */
-	dma_cmd_space = pci_alloc_consistent(macio_get_pci_dev(mdev),
-					     ms->dma_cmd_size,
-					     &dma_cmd_bus);
+	dma_cmd_space = pci_zalloc_consistent(macio_get_pci_dev(mdev),
+					      ms->dma_cmd_size, &dma_cmd_bus);
 	if (dma_cmd_space == NULL) {
 		printk(KERN_ERR "mesh: can't allocate DMA table\n");
 		goto out_unmap;
 	}
-	memset(dma_cmd_space, 0, ms->dma_cmd_size);
 
 	ms->dma_cmds = (struct dbdma_cmd *) DBDMA_ALIGN(dma_cmd_space);
        	ms->dma_cmd_space = dma_cmd_space;