irda: donauboe: Remove casting the return value which is a void pointer

Casting the return value which is a void pointer is redundant.
The conversion from void pointer to any other pointer type is
guaranteed by the C programming language.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/irda/donauboe.c

@@ -1488,7 +1488,7 @@ static void
 toshoboe_close (struct pci_dev *pci_dev)
 {
   int i;
-  struct toshoboe_cb *self = (struct toshoboe_cb*)pci_get_drvdata(pci_dev);
+  struct toshoboe_cb *self = pci_get_drvdata(pci_dev);
 
   IRDA_DEBUG (4, "%s()\n", __func__);
 
@@ -1696,7 +1696,7 @@ toshoboe_open (struct pci_dev *pci_dev, const struct pci_device_id *pdid)
 static int
 toshoboe_gotosleep (struct pci_dev *pci_dev, pm_message_t crap)
 {
-  struct toshoboe_cb *self = (struct toshoboe_cb*)pci_get_drvdata(pci_dev);
+  struct toshoboe_cb *self = pci_get_drvdata(pci_dev);
   unsigned long flags;
   int i = 10;
 
@@ -1725,7 +1725,7 @@ toshoboe_gotosleep (struct pci_dev *pci_dev, pm_message_t crap)
 static int
 toshoboe_wakeup (struct pci_dev *pci_dev)
 {
-  struct toshoboe_cb *self = (struct toshoboe_cb*)pci_get_drvdata(pci_dev);
+  struct toshoboe_cb *self = pci_get_drvdata(pci_dev);
   unsigned long flags;
 
   IRDA_DEBUG (4, "%s()\n", __func__);