diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c
index bc1b13c..5aab7bd 100644
--- a/drivers/atm/eni.c
+++ b/drivers/atm/eni.c
@@ -1832,7 +1832,7 @@
 	/* initialize memory management */
 	buffer_mem = eni_dev->mem - (buf - eni_dev->ram);
 	eni_dev->free_list_size = buffer_mem/MID_MIN_BUF_SIZE/2;
-	eni_dev->free_list = (struct eni_free *) kmalloc(
+	eni_dev->free_list = kmalloc(
 	    sizeof(struct eni_free)*(eni_dev->free_list_size+1),GFP_KERNEL);
 	if (!eni_dev->free_list) {
 		printk(KERN_ERR DEV_LABEL "(itf %d): couldn't get free page\n",
@@ -2232,7 +2232,7 @@
 		goto out0;
 	}
 
-	eni_dev = (struct eni_dev *) kmalloc(sizeof(struct eni_dev),GFP_KERNEL);
+	eni_dev = kmalloc(sizeof(struct eni_dev),GFP_KERNEL);
 	if (!eni_dev) goto out0;
 	if (!cpu_zeroes) {
 		cpu_zeroes = pci_alloc_consistent(pci_dev,ENI_ZEROES_SIZE,
diff --git a/drivers/atm/he.c b/drivers/atm/he.c
index 7d9b4e5..db33f6f 100644
--- a/drivers/atm/he.c
+++ b/drivers/atm/he.c
@@ -2351,7 +2351,7 @@
 
 	cid = he_mkcid(he_dev, vpi, vci);
 
-	he_vcc = (struct he_vcc *) kmalloc(sizeof(struct he_vcc), GFP_ATOMIC);
+	he_vcc = kmalloc(sizeof(struct he_vcc), GFP_ATOMIC);
 	if (he_vcc == NULL) {
 		hprintk("unable to allocate he_vcc during open\n");
 		return -ENOMEM;
diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c
index 2678255..09f477d 100644
--- a/drivers/atm/lanai.c
+++ b/drivers/atm/lanai.c
@@ -2602,7 +2602,7 @@
 	struct atm_dev *atmdev;
 	int result;
 
-	lanai = (struct lanai_dev *) kmalloc(sizeof(*lanai), GFP_KERNEL);
+	lanai = kmalloc(sizeof(*lanai), GFP_KERNEL);
 	if (lanai == NULL) {
 		printk(KERN_ERR DEV_LABEL
 		       ": couldn't allocate dev_data structure!\n");
diff --git a/drivers/atm/nicstar.c b/drivers/atm/nicstar.c
index bd09045..aab9b37 100644
--- a/drivers/atm/nicstar.c
+++ b/drivers/atm/nicstar.c
@@ -997,7 +997,7 @@
    if (size != VBR_SCQSIZE && size != CBR_SCQSIZE)
       return NULL;
 
-   scq = (scq_info *) kmalloc(sizeof(scq_info), GFP_KERNEL);
+   scq = kmalloc(sizeof(scq_info), GFP_KERNEL);
    if (scq == NULL)
       return NULL;
    scq->org = kmalloc(2 * size, GFP_KERNEL);
@@ -1006,7 +1006,7 @@
       kfree(scq);
       return NULL;
    }
-   scq->skb = (struct sk_buff **) kmalloc(sizeof(struct sk_buff *) *
+   scq->skb = kmalloc(sizeof(struct sk_buff *) *
                                           (size / NS_SCQE_SIZE), GFP_KERNEL);
    if (scq->skb == NULL)
    {
diff --git a/drivers/atm/zatm.c b/drivers/atm/zatm.c
index 7df0f37..756d4f7 100644
--- a/drivers/atm/zatm.c
+++ b/drivers/atm/zatm.c
@@ -996,7 +996,7 @@
 
 	DPRINTK("start_tx\n");
 	zatm_dev = ZATM_DEV(dev);
-	zatm_dev->tx_map = (struct atm_vcc **) kmalloc(sizeof(struct atm_vcc *)*
+	zatm_dev->tx_map = kmalloc(sizeof(struct atm_vcc *)*
 	    zatm_dev->chans,GFP_KERNEL);
 	if (!zatm_dev->tx_map) return -ENOMEM;
 	zatm_dev->tx_bw = ATM_OC3_PCR;
@@ -1591,7 +1591,7 @@
 	struct zatm_dev *zatm_dev;
 	int ret = -ENOMEM;
 
-	zatm_dev = (struct zatm_dev *) kmalloc(sizeof(*zatm_dev), GFP_KERNEL);
+	zatm_dev = kmalloc(sizeof(*zatm_dev), GFP_KERNEL);
 	if (!zatm_dev) {
 		printk(KERN_EMERG "%s: memory shortage\n", DEV_LABEL);
 		goto out;