media: cx18: remove unnecessary (void*) conversions

Pointer variables of void * type do not require type cast.
Signed-off-by: Yu Zhe <yuzhe@nfschina.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/pci/cx18/cx18-gpio.c

@@ -307,7 +307,7 @@ int cx18_gpio_register(struct cx18 *cx, u32 hw)
 
 void cx18_reset_ir_gpio(void *data)
 {
-	struct cx18 *cx = to_cx18((struct v4l2_device *)data);
+	struct cx18 *cx = to_cx18(data);
 
 	if (cx->card->gpio_i2c_slave_reset.ir_reset_mask == 0)
 		return;

drivers/media/pci/cx18/cx18-irq.c

@@ -30,7 +30,7 @@ static void epu_cmd(struct cx18 *cx, u32 sw1)
 
 irqreturn_t cx18_irq_handler(int irq, void *dev_id)
 {
-	struct cx18 *cx = (struct cx18 *)dev_id;
+	struct cx18 *cx = dev_id;
 	u32 sw1, sw2, hw2;
 
 	sw1 = cx18_read_reg(cx, SW1_INT_STATUS) & cx->sw1_irq_mask;