scsi: Remove unnecessary casts of void ptr returning alloc function return values

The [vk][cmz]alloc(_node) family of functions return void pointers which
it's completely unnecessary/pointless to cast to other pointer types since
that happens implicitly.

This patch removes such casts from drivers/scsi/

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/scsi/aic7xxx/aic7xxx_core.c b/drivers/scsi/aic7xxx/aic7xxx_core.c
index 3f5a542..e021b48 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_core.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_core.c
@@ -4780,7 +4780,7 @@
 	SLIST_INIT(&scb_data->sg_maps);
 
 	/* Allocate SCB resources */
-	scb_data->scbarray = (struct scb *)kmalloc(sizeof(struct scb) * AHC_SCB_MAX_ALLOC, GFP_ATOMIC);
+	scb_data->scbarray = kmalloc(sizeof(struct scb) * AHC_SCB_MAX_ALLOC, GFP_ATOMIC);
 	if (scb_data->scbarray == NULL)
 		return (ENOMEM);
 	memset(scb_data->scbarray, 0, sizeof(struct scb) * AHC_SCB_MAX_ALLOC);
diff --git a/drivers/scsi/osst.c b/drivers/scsi/osst.c
index 54de1d1..521e218 100644
--- a/drivers/scsi/osst.c
+++ b/drivers/scsi/osst.c
@@ -1484,7 +1484,7 @@
 	int			dbg              = debugging;
 #endif
 
-	if ((buffer = (unsigned char *)vmalloc((nframes + 1) * OS_DATA_SIZE)) == NULL)
+	if ((buffer = vmalloc((nframes + 1) * OS_DATA_SIZE)) == NULL)
 		return (-EIO);
 
 	printk(KERN_INFO "%s:I: Reading back %d frames from drive buffer%s\n",
@@ -2296,7 +2296,7 @@
 	if (STp->raw) return 0;
 
 	if (STp->header_cache == NULL) {
-		if ((STp->header_cache = (os_header_t *)vmalloc(sizeof(os_header_t))) == NULL) {
+		if ((STp->header_cache = vmalloc(sizeof(os_header_t))) == NULL) {
 			printk(KERN_ERR "%s:E: Failed to allocate header cache\n", name);
 			return (-ENOMEM);
 		}
@@ -2484,7 +2484,7 @@
 				   name, ppos, update_frame_cntr);
 #endif
 		if (STp->header_cache == NULL) {
-			if ((STp->header_cache = (os_header_t *)vmalloc(sizeof(os_header_t))) == NULL) {
+			if ((STp->header_cache = vmalloc(sizeof(os_header_t))) == NULL) {
 				printk(KERN_ERR "%s:E: Failed to allocate header cache\n", name);
 				return 0;
 			}
@@ -5851,9 +5851,7 @@
 	/* if this is the first attach, build the infrastructure */
 	write_lock(&os_scsi_tapes_lock);
 	if (os_scsi_tapes == NULL) {
-		os_scsi_tapes =
-			(struct osst_tape **)kmalloc(osst_max_dev * sizeof(struct osst_tape *),
-				   GFP_ATOMIC);
+		os_scsi_tapes = kmalloc(osst_max_dev * sizeof(struct osst_tape *), GFP_ATOMIC);
 		if (os_scsi_tapes == NULL) {
 			write_unlock(&os_scsi_tapes_lock);
 			printk(KERN_ERR "osst :E: Unable to allocate array for OnStream SCSI tapes.\n");