[netdrvr] irq handler minor cleanups in several drivers

* use irq_handler_t where appropriate

* no need to use 'irq' function arg, its already stored in a data struct

* rename irq handler 'irq' argument to 'dummy', where the function
  has been analyzed and proven not to use its first argument.

* remove always-false "dev_id == NULL" test from irq handlers

* remove pointless casts from void*

* declance: irq argument is not const

* add KERN_xxx printk prefix

* fix minor whitespace weirdness

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

3 files changed, 5 insertions, 4 deletions

diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
index e3eca6d047c7..d8948bf8a275 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -3177,8 +3177,9 @@ static int airo_thread(void *data) {
         return 0;
 }
 
-static irqreturn_t airo_interrupt ( int irq, void* dev_id) {
-        struct net_device *dev = (struct net_device *)dev_id;
+static irqreturn_t airo_interrupt(int irq, void *dev_id)
+{
+        struct net_device *dev = dev_id;
         u16 status;
         u16 fid;
         struct airo_info *apriv = dev->priv;
diff --git a/drivers/net/wireless/hostap/hostap_hw.c b/drivers/net/wireless/hostap/hostap_hw.c
index c592641e914e..286b46c516ce 100644
--- a/drivers/net/wireless/hostap/hostap_hw.c
+++ b/drivers/net/wireless/hostap/hostap_hw.c
@@ -2624,7 +2624,7 @@ static void prism2_check_magic(local_info_t *local)
 /* Called only from hardware IRQ */
 static irqreturn_t prism2_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *) dev_id;
+        struct net_device *dev = dev_id;
         struct hostap_interface *iface;
         local_info_t *local;
         int events = 0;
diff --git a/drivers/net/wireless/libertas/if_cs.c b/drivers/net/wireless/libertas/if_cs.c
index ba4fc2b3bf0a..d383c0f9fe3e 100644
--- a/drivers/net/wireless/libertas/if_cs.c
+++ b/drivers/net/wireless/libertas/if_cs.c
@@ -243,7 +243,7 @@ static inline void if_cs_disable_ints(struct if_cs_card *card)
 
 static irqreturn_t if_cs_interrupt(int irq, void *data)
 {
-        struct if_cs_card *card = (struct if_cs_card *)data;
+        struct if_cs_card *card = data;
         u16 int_cause;
 
         lbs_deb_enter(LBS_DEB_CS);