Various drivers' irq handlers: kill dead code, needless casts

- Eliminate casts to/from void*

- Eliminate checks for conditions that never occur.  These typically
  fall into two classes:

	1) Checking for 'dev_id == NULL', then it is never called with
	NULL as an argument.

	2) Checking for invalid irq number, when the only caller (the
	system) guarantees the irq handler is called with the proper
	'irq' number argument.

Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/spi/pxa2xx_spi.c b/drivers/spi/pxa2xx_spi.c
index 77122edeb206..72025df5561d 100644
--- a/drivers/spi/pxa2xx_spi.c
+++ b/drivers/spi/pxa2xx_spi.c
@@ -669,7 +669,7 @@ static irqreturn_t interrupt_transfer(struct driver_data *drv_data)
 
 static irqreturn_t ssp_int(int irq, void *dev_id)
 {
-        struct driver_data *drv_data = (struct driver_data *)dev_id;
+        struct driver_data *drv_data = dev_id;
         void *reg = drv_data->ioaddr;
 
         if (!drv_data->cur_msg) {