Merge branch 'irqclean-submit1' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6

* 'irqclean-submit1' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6:
  drivers/isdn/act2000: kill irq2card_map
  drivers/net/eepro: kill dead code
  Various drivers' irq handlers: kill dead code, needless casts
  drivers/net: eliminate irq handler impossible checks, needless casts
  arch/i386/kernel/time: don't shadow 'irq' function arg

74 files changed, 106 insertions, 329 deletions

diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index 3f221f5eb47e..78af572fd17c 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -201,8 +201,8 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
                 high bit of the PPI port B (0x61).  Note that some PS/2s,
                 notably the 55SX, work fine if this is removed.  */
 
-                irq = inb_p( 0x61 );    /* read the current state */
-                outb_p( irq|0x80, 0x61 );       /* reset the IRQ */
+                u8 irq_v = inb_p( 0x61 );       /* read the current state */
+                outb_p( irq_v|0x80, 0x61 );     /* reset the IRQ */
         }
 
         write_sequnlock(&xtime_lock);
diff --git a/drivers/atm/ambassador.c b/drivers/atm/ambassador.c
index 8ff5c4e50823..323592de047b 100644
--- a/drivers/atm/ambassador.c
+++ b/drivers/atm/ambassador.c
@@ -862,15 +862,10 @@ static inline void interrupts_off (amb_dev * dev) {
 /********** interrupt handling **********/
 
 static irqreturn_t interrupt_handler(int irq, void *dev_id) {
-  amb_dev * dev = (amb_dev *) dev_id;
+  amb_dev * dev = dev_id;
   
   PRINTD (DBG_IRQ|DBG_FLOW, "interrupt_handler: %p", dev_id);
   
-  if (!dev_id) {
-    PRINTD (DBG_IRQ|DBG_ERR, "irq with NULL dev_id: %d", irq);
-    return IRQ_NONE;
-  }
-  
   {
     u32 interrupt = rd_plain (dev, offsetof(amb_mem, interrupt));
   
diff --git a/drivers/atm/horizon.c b/drivers/atm/horizon.c
index 33e9ee47392b..f59349206dd2 100644
--- a/drivers/atm/horizon.c
+++ b/drivers/atm/horizon.c
@@ -1389,15 +1389,6 @@ static irqreturn_t interrupt_handler(int irq, void *dev_id) {
   
   PRINTD (DBG_FLOW, "interrupt_handler: %p", dev_id);
   
-  if (!dev_id) {
-    PRINTD (DBG_IRQ|DBG_ERR, "irq with NULL dev_id: %d", irq);
-    return IRQ_NONE;
-  }
-  if (irq != dev->irq) {
-    PRINTD (DBG_IRQ|DBG_ERR, "irq mismatch: %d", irq);
-    return IRQ_NONE;
-  }
-  
   // definitely for us
   irq_ok = 0;
   while ((int_source = rd_regl (dev, INT_SOURCE_REG_OFF)
diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c
index 8895f026bea7..267825501dfe 100644
--- a/drivers/atm/lanai.c
+++ b/drivers/atm/lanai.c
@@ -1892,11 +1892,9 @@ static inline void lanai_int_1(struct lanai_dev *lanai, u32 reason)
 
 static irqreturn_t lanai_int(int irq, void *devid)
 {
-        struct lanai_dev *lanai = (struct lanai_dev *) devid;
+        struct lanai_dev *lanai = devid;
         u32 reason;
 
-        (void) irq;     /* unused variables */
-
 #ifdef USE_POWERDOWN
         /*
          * If we're powered down we shouldn't be generating any interrupts -
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index 3e8ab84b9447..742d07403101 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -5254,7 +5254,7 @@ static void DAC960_V2_ProcessCompletedCommand(DAC960_Command_T *Command)
 static irqreturn_t DAC960_GEM_InterruptHandler(int IRQ_Channel,
                                        void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
   unsigned long flags;
@@ -5295,7 +5295,7 @@ static irqreturn_t DAC960_GEM_InterruptHandler(int IRQ_Channel,
 static irqreturn_t DAC960_BA_InterruptHandler(int IRQ_Channel,
                                        void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
   unsigned long flags;
@@ -5337,7 +5337,7 @@ static irqreturn_t DAC960_BA_InterruptHandler(int IRQ_Channel,
 static irqreturn_t DAC960_LP_InterruptHandler(int IRQ_Channel,
                                        void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
   unsigned long flags;
@@ -5379,7 +5379,7 @@ static irqreturn_t DAC960_LP_InterruptHandler(int IRQ_Channel,
 static irqreturn_t DAC960_LA_InterruptHandler(int IRQ_Channel,
                                        void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   DAC960_V1_StatusMailbox_T *NextStatusMailbox;
   unsigned long flags;
@@ -5417,7 +5417,7 @@ static irqreturn_t DAC960_LA_InterruptHandler(int IRQ_Channel,
 static irqreturn_t DAC960_PG_InterruptHandler(int IRQ_Channel,
                                        void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   DAC960_V1_StatusMailbox_T *NextStatusMailbox;
   unsigned long flags;
@@ -5455,7 +5455,7 @@ static irqreturn_t DAC960_PG_InterruptHandler(int IRQ_Channel,
 static irqreturn_t DAC960_PD_InterruptHandler(int IRQ_Channel,
                                        void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   unsigned long flags;
 
@@ -5493,7 +5493,7 @@ static irqreturn_t DAC960_PD_InterruptHandler(int IRQ_Channel,
 static irqreturn_t DAC960_P_InterruptHandler(int IRQ_Channel,
                                       void *DeviceIdentifier)
 {
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  DAC960_Controller_T *Controller = DeviceIdentifier;
   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
   unsigned long flags;
 
diff --git a/drivers/cdrom/mcdx.c b/drivers/cdrom/mcdx.c
index 60e1978ec0ea..f574962f4288 100644
--- a/drivers/cdrom/mcdx.c
+++ b/drivers/cdrom/mcdx.c
@@ -850,10 +850,6 @@ static irqreturn_t mcdx_intr(int irq, void *dev_id)
         struct s_drive_stuff *stuffp = dev_id;
         unsigned char b;
 
-        if (stuffp == NULL) {
-                xwarn("mcdx: no device for intr %d\n", irq);
-                return IRQ_NONE;
-        }
 #ifdef AK2
         if (!stuffp->busy && stuffp->pending)
                 stuffp->int_err = 1;
diff --git a/drivers/char/rio/func.h b/drivers/char/rio/func.h
index 6b039186856d..9e7283bd81a0 100644
--- a/drivers/char/rio/func.h
+++ b/drivers/char/rio/func.h
@@ -88,7 +88,7 @@ void RIOHostReset(unsigned int, struct DpRam __iomem *, unsigned int);
 
 /* riointr.c */
 void RIOTxEnable(char *);
-void RIOServiceHost(struct rio_info *, struct Host *, int);
+void RIOServiceHost(struct rio_info *, struct Host *);
 int riotproc(struct rio_info *, struct ttystatics *, int, int);
 
 /* rioparam.c */
diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
index 3bea594600d4..c382df0f82f6 100644
--- a/drivers/char/rio/rio_linux.c
+++ b/drivers/char/rio/rio_linux.c
@@ -368,7 +368,7 @@ static irqreturn_t rio_interrupt(int irq, void *ptr)
         struct Host *HostP;
         func_enter();
 
-        HostP = (struct Host *) ptr;    /* &p->RIOHosts[(long)ptr]; */
+        HostP = ptr;                    /* &p->RIOHosts[(long)ptr]; */
         rio_dprintk(RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n", irq, HostP->Ivec);
 
         /* AAargh! The order in which to do these things is essential and
@@ -402,7 +402,7 @@ static irqreturn_t rio_interrupt(int irq, void *ptr)
                 return IRQ_HANDLED;
         }
 
-        RIOServiceHost(p, HostP, irq);
+        RIOServiceHost(p, HostP);
 
         rio_dprintk(RIO_DEBUG_IFLOW, "riointr() doing host %p type %d\n", ptr, HostP->Type);
 
diff --git a/drivers/char/rio/riointr.c b/drivers/char/rio/riointr.c
index 0bd09040a5c0..eeda40c5e189 100644
--- a/drivers/char/rio/riointr.c
+++ b/drivers/char/rio/riointr.c
@@ -181,7 +181,7 @@ static int RupIntr;
 static int RxIntr;
 static int TxIntr;
 
-void RIOServiceHost(struct rio_info *p, struct Host *HostP, int From)
+void RIOServiceHost(struct rio_info *p, struct Host *HostP)
 {
         rio_spin_lock(&HostP->HostLock);
         if ((HostP->Flags & RUN_STATE) != RC_RUNNING) {
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index be68cfb0ae69..5ab32b38f45a 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -559,11 +559,10 @@ static irqreturn_t rc_interrupt(int irq, void * dev_id)
         int handled = 0;
 
         bp = IRQ_to_board[irq];
-        
-        if (!bp || !(bp->flags & RC_BOARD_ACTIVE))  {
+
+        if (!(bp->flags & RC_BOARD_ACTIVE))
                 return IRQ_NONE;
-        }
-        
+
         while ((++loop < 16) && ((status = ~(rc_in(bp, RC_BSR))) &
                                  (RC_BSR_TOUT | RC_BSR_TINT |
                                   RC_BSR_MINT | RC_BSR_RINT))) {
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index 6022495571ae..d0b88d0e87fd 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -912,7 +912,7 @@ static irqreturn_t sx_interrupt(int irq, void *dev_id)
         spin_lock_irqsave(&bp->lock, flags);
 
         dprintk (SX_DEBUG_FLOW, "enter %s port %d room: %ld\n", __FUNCTION__, port_No(sx_get_port(bp, "INT")), SERIAL_XMIT_SIZE - sx_get_port(bp, "ITN")->xmit_cnt - 1);
-        if (!bp || !(bp->flags & SX_BOARD_ACTIVE)) {
+        if (!(bp->flags & SX_BOARD_ACTIVE)) {
                 dprintk (SX_DEBUG_IRQ, "sx: False interrupt. irq %d.\n", irq);
                 spin_unlock_irqrestore(&bp->lock, flags);
                 func_exit();
diff --git a/drivers/isdn/act2000/act2000_isa.c b/drivers/isdn/act2000/act2000_isa.c
index 3014495b7ff7..3cac23739344 100644
--- a/drivers/isdn/act2000/act2000_isa.c
+++ b/drivers/isdn/act2000/act2000_isa.c
@@ -16,8 +16,6 @@
 #include "act2000_isa.h"
 #include "capi.h"
 
-static act2000_card *irq2card_map[16];
-
 /*
  * Reset Controller, then try to read the Card's signature.
  + Return:
@@ -65,14 +63,9 @@ act2000_isa_detect(unsigned short portbase)
 static irqreturn_t
 act2000_isa_interrupt(int irq, void *dev_id)
 {
-        act2000_card *card = irq2card_map[irq];
+        act2000_card *card = dev_id;
         u_char istatus;
 
-        if (!card) {
-                printk(KERN_WARNING
-                       "act2000: Spurious interrupt!\n");
-                return IRQ_NONE;
-        }
         istatus = (inb(ISA_PORT_ISR) & 0x07);
         if (istatus & ISA_ISR_OUT) {
                 /* RX fifo has data */
@@ -139,17 +132,15 @@ int
 act2000_isa_config_irq(act2000_card * card, short irq)
 {
         if (card->flags & ACT2000_FLAGS_IVALID) {
-                free_irq(card->irq, NULL);
-                irq2card_map[card->irq] = NULL;
+                free_irq(card->irq, card);
         }
         card->flags &= ~ACT2000_FLAGS_IVALID;
         outb(ISA_COR_IRQOFF, ISA_PORT_COR);
         if (!irq)
                 return 0;
 
-        if (!request_irq(irq, &act2000_isa_interrupt, 0, card->regname, NULL)) {
+        if (!request_irq(irq, &act2000_isa_interrupt, 0, card->regname, card)) {
                 card->irq = irq;
-                irq2card_map[card->irq] = card;
                 card->flags |= ACT2000_FLAGS_IVALID;
                 printk(KERN_WARNING
                        "act2000: Could not request irq %d\n",irq);
@@ -188,10 +179,9 @@ act2000_isa_release(act2000_card * card)
         unsigned long flags;
 
         spin_lock_irqsave(&card->lock, flags);
-        if (card->flags & ACT2000_FLAGS_IVALID) {
-                free_irq(card->irq, NULL);
-                irq2card_map[card->irq] = NULL;
-        }
+        if (card->flags & ACT2000_FLAGS_IVALID)
+                free_irq(card->irq, card);
+
         card->flags &= ~ACT2000_FLAGS_IVALID;
         if (card->flags & ACT2000_FLAGS_PVALID)
                 release_region(card->port, ISA_REGION);
diff --git a/drivers/media/video/zoran_device.c b/drivers/media/video/zoran_device.c
index d9d5020a2224..168e431d7c71 100644
--- a/drivers/media/video/zoran_device.c
+++ b/drivers/media/video/zoran_device.c
@@ -1415,7 +1415,7 @@ zoran_irq (int             irq,
         struct zoran *zr;
         unsigned long flags;
 
-        zr = (struct zoran *) dev_id;
+        zr = dev_id;
         count = 0;
 
         if (zr->testing) {
diff --git a/drivers/net/3c509.c b/drivers/net/3c509.c
index 7ad0a54779c4..f791bf026e51 100644
--- a/drivers/net/3c509.c
+++ b/drivers/net/3c509.c
@@ -912,16 +912,11 @@ el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 static irqreturn_t
 el3_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *)dev_id;
+        struct net_device *dev = dev_id;
         struct el3_private *lp;
         int ioaddr, status;
         int i = max_interrupt_work;
 
-        if (dev == NULL) {
-                printk ("el3_interrupt(): irq %d for unknown device.\n", irq);
-                return IRQ_NONE;
-        }
-
         lp = netdev_priv(dev);
         spin_lock(&lp->lock);
 
diff --git a/drivers/net/3c523.c b/drivers/net/3c523.c
index 1c97271112d0..91849469b4f4 100644
--- a/drivers/net/3c523.c
+++ b/drivers/net/3c523.c
@@ -902,14 +902,11 @@ static void *alloc_rfa(struct net_device *dev, void *ptr)
 static irqreturn_t
 elmc_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *) dev_id;
+        struct net_device *dev = dev_id;
         unsigned short stat;
         struct priv *p;
 
-        if (dev == NULL) {
-                printk(KERN_ERR "elmc-interrupt: irq %d for unknown device.\n", irq);
-                return IRQ_NONE;
-        } else if (!netif_running(dev)) {
+        if (!netif_running(dev)) {
                 /* The 3c523 has this habit of generating interrupts during the
                    reset.  I'm not sure if the ni52 has this same problem, but it's
                    really annoying if we haven't finished initializing it.  I was
diff --git a/drivers/net/3c527.c b/drivers/net/3c527.c
index d516c3225ca4..f4aca5386add 100644
--- a/drivers/net/3c527.c
+++ b/drivers/net/3c527.c
@@ -1324,11 +1324,6 @@ static irqreturn_t mc32_interrupt(int irq, void *dev_id)
         int rx_event = 0;
         int tx_event = 0;
 
-        if (dev == NULL) {
-                printk(KERN_WARNING "%s: irq %d for unknown device.\n", cardname, irq);
-                return IRQ_NONE;
-        }
-
         ioaddr = dev->base_addr;
         lp = netdev_priv(dev);
 
diff --git a/drivers/net/8390.c b/drivers/net/8390.c
index fa3442cb1a49..3d1c599ac3cb 100644
--- a/drivers/net/8390.c
+++ b/drivers/net/8390.c
@@ -406,14 +406,8 @@ irqreturn_t ei_interrupt(int irq, void *dev_id)
         int interrupts, nr_serviced = 0;
         struct ei_device *ei_local;
 
-        if (dev == NULL)
-        {
-                printk ("net_interrupt(): irq %d for unknown device.\n", irq);
-                return IRQ_NONE;
-        }
-
         e8390_base = dev->base_addr;
-        ei_local = (struct ei_device *) netdev_priv(dev);
+        ei_local = netdev_priv(dev);
 
         /*
          *      Protect the irq test too.
diff --git a/drivers/net/atp.c b/drivers/net/atp.c
index 062f80e20874..2d306fcb7f36 100644
--- a/drivers/net/atp.c
+++ b/drivers/net/atp.c
@@ -598,17 +598,13 @@ static int atp_send_packet(struct sk_buff *skb, struct net_device *dev)
    Handle the network interface interrupts. */
 static irqreturn_t atp_interrupt(int irq, void *dev_instance)
 {
-        struct net_device *dev = (struct net_device *)dev_instance;
+        struct net_device *dev = dev_instance;
         struct net_local *lp;
         long ioaddr;
         static int num_tx_since_rx;
         int boguscount = max_interrupt_work;
         int handled = 0;
 
-        if (dev == NULL) {
-                printk(KERN_ERR "ATP_interrupt(): irq %d for unknown device.\n", irq);
-                return IRQ_NONE;
-        }
         ioaddr = dev->base_addr;
         lp = netdev_priv(dev);
 
diff --git a/drivers/net/de600.c b/drivers/net/de600.c
index d9b006c9e367..690bb40b353d 100644
--- a/drivers/net/de600.c
+++ b/drivers/net/de600.c
@@ -265,12 +265,6 @@ static irqreturn_t de600_interrupt(int irq, void *dev_id)
         int             retrig = 0;
         int             boguscount = 0;
 
-        /* This might just as well be deleted now, no crummy drivers present :-) */
-        if ((dev == NULL) || (DE600_IRQ != irq)) {
-                printk(KERN_ERR "%s: bogus interrupt %d\n", dev?dev->name:"DE-600", irq);
-                return IRQ_NONE;
-        }
-
         spin_lock(&de600_lock);
 
         select_nic();
diff --git a/drivers/net/declance.c b/drivers/net/declance.c
index e179aa1c1ba0..00e2a8a134d7 100644
--- a/drivers/net/declance.c
+++ b/drivers/net/declance.c
@@ -696,7 +696,7 @@ out:
 
 static irqreturn_t lance_dma_merr_int(const int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *) dev_id;
+        struct net_device *dev = dev_id;
 
         printk("%s: DMA error\n", dev->name);
         return IRQ_HANDLED;
@@ -704,7 +704,7 @@ static irqreturn_t lance_dma_merr_int(const int irq, void *dev_id)
 
 static irqreturn_t lance_interrupt(const int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *) dev_id;
+        struct net_device *dev = dev_id;
         struct lance_private *lp = netdev_priv(dev);
         volatile struct lance_regs *ll = lp->ll;
         int csr0;
diff --git a/drivers/net/dgrs.c b/drivers/net/dgrs.c
index 6b1234b09fb3..a79520295fd0 100644
--- a/drivers/net/dgrs.c
+++ b/drivers/net/dgrs.c
@@ -897,8 +897,8 @@ static int dgrs_ioctl(struct net_device *devN, struct ifreq *ifr, int cmd)
 
 static irqreturn_t dgrs_intr(int irq, void *dev_id)
 {
-        struct net_device       *dev0 = (struct net_device *) dev_id;
-        DGRS_PRIV       *priv0 = (DGRS_PRIV *) dev0->priv;
+        struct net_device       *dev0 = dev_id;
+        DGRS_PRIV       *priv0 = dev0->priv;
         I596_CB         *cbp;
         int             cmd;
         int             i;
diff --git a/drivers/net/eepro.c b/drivers/net/eepro.c
index aae454aaa1c6..a4eb0dc99ecf 100644
--- a/drivers/net/eepro.c
+++ b/drivers/net/eepro.c
@@ -994,16 +994,6 @@ static int eepro_open(struct net_device *dev)
                 return -EAGAIN;
         }
 
-#ifdef irq2dev_map
-        if  (((irq2dev_map[dev->irq] != 0)
-                || (irq2dev_map[dev->irq] = dev) == 0) &&
-                (irq2dev_map[dev->irq]!=dev)) {
-                /* printk("%s: IRQ map wrong\n", dev->name); */
-                free_irq(dev->irq, dev);
-                return -EAGAIN;
-        }
-#endif
-
         /* Initialize the 82595. */
 
         eepro_sw2bank2(ioaddr); /* be CAREFUL, BANK 2 now */
@@ -1198,17 +1188,11 @@ static int eepro_send_packet(struct sk_buff *skb, struct net_device *dev)
 static irqreturn_t
 eepro_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev =  (struct net_device *)dev_id;
-                              /* (struct net_device *)(irq2dev_map[irq]);*/
+        struct net_device *dev = dev_id;
         struct eepro_local *lp;
         int ioaddr, status, boguscount = 20;
         int handled = 0;
 
-        if (dev == NULL) {
-                printk (KERN_ERR "eepro_interrupt(): irq %d for unknown device.\\n", irq);
-                return IRQ_NONE;
-        }
-
         lp = netdev_priv(dev);
 
         spin_lock(&lp->lock);
@@ -1288,10 +1272,6 @@ static int eepro_close(struct net_device *dev)
         /* release the interrupt */
         free_irq(dev->irq, dev);
 
-#ifdef irq2dev_map
-        irq2dev_map[dev->irq] = 0;
-#endif
-
         /* Update the statistics here. What statistics? */
 
         return 0;
diff --git a/drivers/net/eexpress.c b/drivers/net/eexpress.c
index 05ca730fe81e..e14be020e562 100644
--- a/drivers/net/eexpress.c
+++ b/drivers/net/eexpress.c
@@ -796,13 +796,6 @@ static irqreturn_t eexp_irq(int irq, void *dev_info)
         unsigned short ioaddr,status,ack_cmd;
         unsigned short old_read_ptr, old_write_ptr;
 
-        if (dev==NULL)
-        {
-                printk(KERN_WARNING "eexpress: irq %d for unknown device\n",
-                       irq);
-                return IRQ_NONE;
-        }
-
         lp = netdev_priv(dev);
         ioaddr = dev->base_addr;
 
diff --git a/drivers/net/irda/ali-ircc.c b/drivers/net/irda/ali-ircc.c
index 971e2dee1e6b..cebf8c374bc5 100644
--- a/drivers/net/irda/ali-ircc.c
+++ b/drivers/net/irda/ali-ircc.c
@@ -662,19 +662,13 @@ static int ali_ircc_read_dongle_id (int i, chipio_t *info)
  */
 static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *) dev_id;
+        struct net_device *dev = dev_id;
         struct ali_ircc_cb *self;
         int ret;
                 
         IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
                 
-        if (!dev) {
-                IRDA_WARNING("%s: irq %d for unknown device.\n",
-                             ALI_IRCC_DRIVER_NAME, irq);
-                return IRQ_NONE;
-        }       
-        
-        self = (struct ali_ircc_cb *) dev->priv;
+        self = dev->priv;
         
         spin_lock(&self->lock);
         
diff --git a/drivers/net/irda/donauboe.c b/drivers/net/irda/donauboe.c
index 7a9128181e68..636d0630fe02 100644
--- a/drivers/net/irda/donauboe.c
+++ b/drivers/net/irda/donauboe.c
@@ -657,12 +657,6 @@ toshoboe_makemttpacket (struct toshoboe_cb *self, void *buf, int mtt)
   return xbofs;
 }
 
-static int toshoboe_invalid_dev(int irq)
-{
-  printk (KERN_WARNING DRIVER_NAME ": irq %d for unknown device.\n", irq);
-  return 1;
-}
-
 #ifdef USE_PROBE
 /***********************************************************************/
 /* Probe code */
@@ -711,12 +705,9 @@ stuff_byte (__u8 byte, __u8 * buf)
 static irqreturn_t
 toshoboe_probeinterrupt (int irq, void *dev_id)
 {
-  struct toshoboe_cb *self = (struct toshoboe_cb *) dev_id;
+  struct toshoboe_cb *self = dev_id;
   __u8 irqstat;
 
-  if (self == NULL && toshoboe_invalid_dev(irq))
-    return IRQ_NONE;
-
   irqstat = INB (OBOE_ISR);
 
 /* was it us */
diff --git a/drivers/net/irda/irport.c b/drivers/net/irda/irport.c
index 6ea78ececca7..654a68b490ae 100644
--- a/drivers/net/irda/irport.c
+++ b/drivers/net/irda/irport.c
@@ -766,18 +766,14 @@ static inline void irport_receive(struct irport_cb *self)
  */
 static irqreturn_t irport_interrupt(int irq, void *dev_id) 
 {
-        struct net_device *dev = (struct net_device *) dev_id;
+        struct net_device *dev = dev_id;
         struct irport_cb *self;
         int boguscount = 0;
         int iobase;
         int iir, lsr;
         int handled = 0;
 
-        if (!dev) {
-                IRDA_WARNING("%s() irq %d for unknown device.\n", __FUNCTION__, irq);
-                return IRQ_NONE;
-        }
-        self = (struct irport_cb *) dev->priv;
+        self = dev->priv;
 
         spin_lock(&self->lock);
 
diff --git a/drivers/net/irda/irport.h b/drivers/net/irda/irport.h
index 4393168347e3..3f46b84c6c85 100644
--- a/drivers/net/irda/irport.h
+++ b/drivers/net/irda/irport.h
@@ -74,7 +74,7 @@ struct irport_cb {
         /* For piggyback drivers */
         void *priv;                
         void (*change_speed)(void *priv, __u32 speed);
-        int (*interrupt)(int irq, void *dev_id);
+        irqreturn_t (*interrupt)(int irq, void *dev_id);
 };
 
 #endif /* IRPORT_H */
diff --git a/drivers/net/irda/nsc-ircc.c b/drivers/net/irda/nsc-ircc.c
index ea12e999814a..29b5ccd29d0b 100644
--- a/drivers/net/irda/nsc-ircc.c
+++ b/drivers/net/irda/nsc-ircc.c
@@ -2068,17 +2068,12 @@ static void nsc_ircc_fir_interrupt(struct nsc_ircc_cb *self, int iobase,
  */
 static irqreturn_t nsc_ircc_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *) dev_id;
+        struct net_device *dev = dev_id;
         struct nsc_ircc_cb *self;
         __u8 bsr, eir;
         int iobase;
 
-        if (!dev) {
-                IRDA_WARNING("%s: irq %d for unknown device.\n",
-                             driver_name, irq);
-                return IRQ_NONE;
-        }
-        self = (struct nsc_ircc_cb *) dev->priv;
+        self = dev->priv;
 
         spin_lock(&self->lock); 
 
diff --git a/drivers/net/irda/w83977af_ir.c b/drivers/net/irda/w83977af_ir.c
index b4fb92a7baa8..4212657fa4f9 100644
--- a/drivers/net/irda/w83977af_ir.c
+++ b/drivers/net/irda/w83977af_ir.c
@@ -1113,17 +1113,12 @@ static __u8 w83977af_fir_interrupt(struct w83977af_ir *self, int isr)
  */
 static irqreturn_t w83977af_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *) dev_id;
+        struct net_device *dev = dev_id;
         struct w83977af_ir *self;
         __u8 set, icr, isr;
         int iobase;
 
-        if (!dev) {
-                printk(KERN_WARNING "%s: irq %d for unknown device.\n", 
-                        driver_name, irq);
-                return IRQ_NONE;
-        }
-        self = (struct w83977af_ir *) dev->priv;
+        self = dev->priv;
 
         iobase = self->io.fir_base;
 
diff --git a/drivers/net/lance.c b/drivers/net/lance.c
index 7afac47e59ad..6efbd499d752 100644
--- a/drivers/net/lance.c
+++ b/drivers/net/lance.c
@@ -1019,11 +1019,6 @@ static irqreturn_t lance_interrupt(int irq, void *dev_id)
         int csr0, ioaddr, boguscnt=10;
         int must_restart;
 
-        if (dev == NULL) {
-                printk ("lance_interrupt(): irq %d for unknown device.\n", irq);
-                return IRQ_NONE;
-        }
-
         ioaddr = dev->base_addr;
         lp = dev->priv;
 
diff --git a/drivers/net/pcmcia/axnet_cs.c b/drivers/net/pcmcia/axnet_cs.c
index e5f366910914..5ddd5742f779 100644
--- a/drivers/net/pcmcia/axnet_cs.c
+++ b/drivers/net/pcmcia/axnet_cs.c
@@ -1201,14 +1201,8 @@ static irqreturn_t ax_interrupt(int irq, void *dev_id)
         struct ei_device *ei_local;
         int handled = 0;
 
-        if (dev == NULL) 
-        {
-                printk ("net_interrupt(): irq %d for unknown device.\n", irq);
-                return IRQ_NONE;
-        }
-    
         e8390_base = dev->base_addr;
-        ei_local = (struct ei_device *) netdev_priv(dev);
+        ei_local = netdev_priv(dev);
 
         /*
          *      Protect the irq test too.
diff --git a/drivers/net/pcnet32.c b/drivers/net/pcnet32.c
index c73e2f210774..36f9d988278f 100644
--- a/drivers/net/pcnet32.c
+++ b/drivers/net/pcnet32.c
@@ -2569,13 +2569,6 @@ pcnet32_interrupt(int irq, void *dev_id)
         u16 csr0;
         int boguscnt = max_interrupt_work;
 
-        if (!dev) {
-                if (pcnet32_debug & NETIF_MSG_INTR)
-                        printk(KERN_DEBUG "%s(): irq %d for unknown device\n",
-                               __FUNCTION__, irq);
-                return IRQ_NONE;
-        }
-
         ioaddr = dev->base_addr;
         lp = dev->priv;
 
diff --git a/drivers/net/plip.c b/drivers/net/plip.c
index c0b333d2917a..71afb274498f 100644
--- a/drivers/net/plip.c
+++ b/drivers/net/plip.c
@@ -909,11 +909,6 @@ plip_interrupt(int irq, void *dev_id)
         struct plip_local *rcv;
         unsigned char c0;
 
-        if (dev == NULL) {
-                printk(KERN_DEBUG "plip_interrupt: irq %d for unknown device.\n", irq);
-                return;
-        }
-
         nl = netdev_priv(dev);
         rcv = &nl->rcv_data;
 
diff --git a/drivers/net/saa9730.c b/drivers/net/saa9730.c
index c9efad8a917e..b269513cde45 100644
--- a/drivers/net/saa9730.c
+++ b/drivers/net/saa9730.c
@@ -747,7 +747,7 @@ static int lan_saa9730_rx(struct net_device *dev)
 
 static irqreturn_t lan_saa9730_interrupt(const int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *) dev_id;
+        struct net_device *dev = dev_id;
         struct lan_saa9730_private *lp = netdev_priv(dev);
 
         if (lan_saa9730_debug > 5)
diff --git a/drivers/net/sb1000.c b/drivers/net/sb1000.c
index dc30dee5537f..b9fa4fbb1398 100644
--- a/drivers/net/sb1000.c
+++ b/drivers/net/sb1000.c
@@ -1084,19 +1084,13 @@ static irqreturn_t sb1000_interrupt(int irq, void *dev_id)
         char *name;
         unsigned char st;
         int ioaddr[2];
-        struct net_device *dev = (struct net_device *) dev_id;
+        struct net_device *dev = dev_id;
         struct sb1000_private *lp = netdev_priv(dev);
 
         const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00};
         const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00};
         const int MaxRxErrorCount = 6;
 
-        if (dev == NULL) {
-                printk(KERN_ERR "sb1000_interrupt(): irq %d for unknown device.\n",
-                        irq);
-                return IRQ_NONE;
-        }
-
         ioaddr[0] = dev->base_addr;
         /* mem_start holds the second I/O address */
         ioaddr[1] = dev->mem_start;
diff --git a/drivers/net/skfp/skfddi.c b/drivers/net/skfp/skfddi.c
index 06ea2626c6f4..9733a11c6146 100644
--- a/drivers/net/skfp/skfddi.c
+++ b/drivers/net/skfp/skfddi.c
@@ -616,15 +616,10 @@ static int skfp_close(struct net_device *dev)
 
 irqreturn_t skfp_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *) dev_id;
+        struct net_device *dev = dev_id;
         struct s_smc *smc;      /* private board structure pointer */
         skfddi_priv *bp;
 
-        if (dev == NULL) {
-                printk("%s: irq %d for unknown device\n", dev->name, irq);
-                return IRQ_NONE;
-        }
-
         smc = netdev_priv(dev);
         bp = &smc->os;
 
diff --git a/drivers/net/sonic.c b/drivers/net/sonic.c
index cfece9676aff..ed7aa0a5acca 100644
--- a/drivers/net/sonic.c
+++ b/drivers/net/sonic.c
@@ -295,15 +295,10 @@ static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
  */
 static irqreturn_t sonic_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *) dev_id;
+        struct net_device *dev = dev_id;
         struct sonic_local *lp = netdev_priv(dev);
         int status;
 
-        if (dev == NULL) {
-                printk(KERN_ERR "sonic_interrupt: irq %d for unknown device.\n", irq);
-                return IRQ_NONE;
-        }
-
         if (!(status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT))
                 return IRQ_NONE;
 
diff --git a/drivers/net/sunhme.c b/drivers/net/sunhme.c
index 45d07faf7b96..9d7cd130c19d 100644
--- a/drivers/net/sunhme.c
+++ b/drivers/net/sunhme.c
@@ -2095,8 +2095,8 @@ static void happy_meal_rx(struct happy_meal *hp, struct net_device *dev)
 
 static irqreturn_t happy_meal_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *) dev_id;
-        struct happy_meal *hp  = dev->priv;
+        struct net_device *dev = dev_id;
+        struct happy_meal *hp  = netdev_priv(dev);
         u32 happy_status       = hme_read32(hp, hp->gregs + GREG_STAT);
 
         HMD(("happy_meal_interrupt: status=%08x ", happy_status));
diff --git a/drivers/net/sunlance.c b/drivers/net/sunlance.c
index 9207e19cac34..5b00d79b5573 100644
--- a/drivers/net/sunlance.c
+++ b/drivers/net/sunlance.c
@@ -822,7 +822,7 @@ out:
 
 static irqreturn_t lance_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *)dev_id;
+        struct net_device *dev = dev_id;
         struct lance_private *lp = netdev_priv(dev);
         int csr0;
 
diff --git a/drivers/net/sunqe.c b/drivers/net/sunqe.c
index 020e78170595..7874eb1ef043 100644
--- a/drivers/net/sunqe.c
+++ b/drivers/net/sunqe.c
@@ -468,7 +468,7 @@ static void qe_tx_reclaim(struct sunqe *qep);
  */
 static irqreturn_t qec_interrupt(int irq, void *dev_id)
 {
-        struct sunqec *qecp = (struct sunqec *) dev_id;
+        struct sunqec *qecp = dev_id;
         u32 qec_status;
         int channel = 0;
 
diff --git a/drivers/net/tokenring/smctr.c b/drivers/net/tokenring/smctr.c
index 9bd4cba87872..46dabdb12071 100644
--- a/drivers/net/tokenring/smctr.c
+++ b/drivers/net/tokenring/smctr.c
@@ -1990,15 +1990,8 @@ static irqreturn_t smctr_interrupt(int irq, void *dev_id)
         __u8 isb_type, isb_subtype;
         __u16 isb_index;
 
-        if(dev == NULL)
-        {
-                printk(KERN_CRIT "%s: irq %d for unknown device.\n", dev->name, irq);
-                return IRQ_NONE;
-        }
-
         ioaddr = dev->base_addr;
         tp = netdev_priv(dev);
-        
 
         if(tp->status == NOT_INITIALIZED)
                 return IRQ_NONE;
diff --git a/drivers/net/tokenring/tms380tr.c b/drivers/net/tokenring/tms380tr.c
index c0ab6e44eb1f..ea797ca2b988 100644
--- a/drivers/net/tokenring/tms380tr.c
+++ b/drivers/net/tokenring/tms380tr.c
@@ -751,11 +751,6 @@ irqreturn_t tms380tr_interrupt(int irq, void *dev_id)
         unsigned short irq_type;
         int handled = 0;
 
-        if(dev == NULL) {
-                printk(KERN_INFO "%s: irq %d for unknown device.\n", dev->name, irq);
-                return IRQ_NONE;
-        }
-
         tp = netdev_priv(dev);
 
         irq_type = SIFREADW(SIFSTS);
diff --git a/drivers/net/tulip/de4x5.c b/drivers/net/tulip/de4x5.c
index e17f9779ead2..3f4b6408b755 100644
--- a/drivers/net/tulip/de4x5.c
+++ b/drivers/net/tulip/de4x5.c
@@ -1540,16 +1540,12 @@ de4x5_queue_pkt(struct sk_buff *skb, struct net_device *dev)
 static irqreturn_t
 de4x5_interrupt(int irq, void *dev_id)
 {
-    struct net_device *dev = (struct net_device *)dev_id;
+    struct net_device *dev = dev_id;
     struct de4x5_private *lp;
     s32 imr, omr, sts, limit;
     u_long iobase;
     unsigned int handled = 0;
 
-    if (dev == NULL) {
-        printk ("de4x5_interrupt(): irq %d for unknown device.\n", irq);
-        return IRQ_NONE;
-    }
     lp = netdev_priv(dev);
     spin_lock(&lp->lock);
     iobase = dev->base_addr;
diff --git a/drivers/net/wan/cycx_main.c b/drivers/net/wan/cycx_main.c
index 12363e056b63..6e5f1c898517 100644
--- a/drivers/net/wan/cycx_main.c
+++ b/drivers/net/wan/cycx_main.c
@@ -303,9 +303,9 @@ out:	return ret;
  */
 static irqreturn_t cycx_isr(int irq, void *dev_id)
 {
-        struct cycx_device *card = (struct cycx_device *)dev_id;
+        struct cycx_device *card = dev_id;
 
-        if (!card || card->wandev.state == WAN_UNCONFIGURED)
+        if (card->wandev.state == WAN_UNCONFIGURED)
                 goto out;
 
         if (card->in_isr) {
diff --git a/drivers/net/wan/sdla.c b/drivers/net/wan/sdla.c
index 5715d25271f1..6a485f0556f4 100644
--- a/drivers/net/wan/sdla.c
+++ b/drivers/net/wan/sdla.c
@@ -875,13 +875,7 @@ static irqreturn_t sdla_isr(int irq, void *dev_id)
 
         dev = dev_id;
 
-        if (dev == NULL)
-        {
-                printk(KERN_WARNING "sdla_isr(): irq %d for unknown device.\n", irq);
-                return IRQ_NONE;
-        }
-
-        flp = dev->priv;
+        flp = netdev_priv(dev);
 
         if (!flp->initialized)
         {
diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c
index 793da5f69344..b779c7dcc1a8 100644
--- a/drivers/net/wireless/orinoco.c
+++ b/drivers/net/wireless/orinoco.c
@@ -1954,7 +1954,7 @@ static void __orinoco_ev_wterr(struct net_device *dev, hermes_t *hw)
 
 irqreturn_t orinoco_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *)dev_id;
+        struct net_device *dev = dev_id;
         struct orinoco_private *priv = netdev_priv(dev);
         hermes_t *hw = &priv->hw;
         int count = MAX_IRQLOOPS_PER_IRQ;
diff --git a/drivers/net/wireless/wavelan_cs.c b/drivers/net/wireless/wavelan_cs.c
index cadfe132db84..aafb301041b1 100644
--- a/drivers/net/wireless/wavelan_cs.c
+++ b/drivers/net/wireless/wavelan_cs.c
@@ -4119,21 +4119,12 @@ static irqreturn_t
 wavelan_interrupt(int           irq,
                   void *        dev_id)
 {
-  struct net_device *   dev;
+  struct net_device *   dev = dev_id;
   net_local *   lp;
   kio_addr_t    base;
   int           status0;
   u_int         tx_status;
 
-  if ((dev = dev_id) == NULL)
-    {
-#ifdef DEBUG_INTERRUPT_ERROR
-      printk(KERN_WARNING "wavelan_interrupt(): irq %d for unknown device.\n",
-             irq);
-#endif
-      return IRQ_NONE;
-    }
-
 #ifdef DEBUG_INTERRUPT_TRACE
   printk(KERN_DEBUG "%s: ->wavelan_interrupt()\n", dev->name);
 #endif
diff --git a/drivers/net/wireless/wl3501_cs.c b/drivers/net/wireless/wl3501_cs.c
index a1430352169b..5b98a7876982 100644
--- a/drivers/net/wireless/wl3501_cs.c
+++ b/drivers/net/wireless/wl3501_cs.c
@@ -1155,25 +1155,18 @@ static inline void wl3501_ack_interrupt(struct wl3501_card *this)
  */
 static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
 {
-        struct net_device *dev = (struct net_device *)dev_id;
+        struct net_device *dev = dev_id;
         struct wl3501_card *this;
-        int handled = 1;
 
-        if (!dev)
-                goto unknown;
-        this = dev->priv;
+        this = netdev_priv(dev);
         spin_lock(&this->lock);
         wl3501_ack_interrupt(this);
         wl3501_block_interrupt(this);
         wl3501_rx_interrupt(dev);
         wl3501_unblock_interrupt(this);
         spin_unlock(&this->lock);
-out:
-        return IRQ_RETVAL(handled);
-unknown:
-        handled = 0;
-        printk(KERN_ERR "%s: irq %d for unknown device.\n", __FUNCTION__, irq);
-        goto out;
+
+        return IRQ_HANDLED;
 }
 
 static int wl3501_reset_board(struct wl3501_card *this)
diff --git a/drivers/net/yellowfin.c b/drivers/net/yellowfin.c
index ac600212d9a9..2412ce4917f2 100644
--- a/drivers/net/yellowfin.c
+++ b/drivers/net/yellowfin.c
@@ -896,13 +896,6 @@ static irqreturn_t yellowfin_interrupt(int irq, void *dev_instance)
         int boguscnt = max_interrupt_work;
         unsigned int handled = 0;
 
-#ifndef final_version                   /* Can never occur. */
-        if (dev == NULL) {
-                printk (KERN_ERR "yellowfin_interrupt(): irq %d for unknown device.\n", irq);
-                return IRQ_NONE;
-        }
-#endif
-
         yp = netdev_priv(dev);
         ioaddr = yp->base;
 
diff --git a/drivers/net/znet.c b/drivers/net/znet.c
index 2068a109a86c..b24b0727108c 100644
--- a/drivers/net/znet.c
+++ b/drivers/net/znet.c
@@ -610,11 +610,6 @@ static irqreturn_t znet_interrupt(int irq, void *dev_id)
         int boguscnt = 20;
         int handled = 0;
 
-        if (dev == NULL) {
-                printk(KERN_WARNING "znet_interrupt(): IRQ %d for unknown device.\n", irq);
-                return IRQ_NONE;
-        }
-
         spin_lock (&znet->lock);
 
         ioaddr = dev->base_addr;
diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c
index 991e084db2d6..7f5df9a9f393 100644
--- a/drivers/pcmcia/at91_cf.c
+++ b/drivers/pcmcia/at91_cf.c
@@ -66,7 +66,7 @@ static int at91_cf_ss_init(struct pcmcia_socket *s)
 
 static irqreturn_t at91_cf_irq(int irq, void *_cf)
 {
-        struct at91_cf_socket   *cf = (struct at91_cf_socket *) _cf;
+        struct at91_cf_socket *cf = _cf;
 
         if (irq == cf->board->det_pin) {
                 unsigned present = at91_cf_present(cf);
diff --git a/drivers/pcmcia/hd64465_ss.c b/drivers/pcmcia/hd64465_ss.c
index db3c26b5de14..caca0dc9d30f 100644
--- a/drivers/pcmcia/hd64465_ss.c
+++ b/drivers/pcmcia/hd64465_ss.c
@@ -650,7 +650,7 @@ static int hs_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *mem)
  */
 static int hs_irq_demux(int irq, void *dev)
 {
-        hs_socket_t *sp = (hs_socket_t *)dev;
+        hs_socket_t *sp = dev;
         u_int cscr;
         
         DPRINTK("hs_irq_demux(irq=%d)\n", irq);
@@ -673,11 +673,10 @@ static int hs_irq_demux(int irq, void *dev)
  
 static irqreturn_t hs_interrupt(int irq, void *dev)
 {
-        hs_socket_t *sp = (hs_socket_t *)dev;
+        hs_socket_t *sp = dev;
         u_int events = 0;
         u_int cscr;
-        
-        
+
         cscr = hs_in(sp, CSCR);
         
         DPRINTK("hs_interrupt, cscr=%04x\n", cscr);
diff --git a/drivers/scsi/NCR53c406a.c b/drivers/scsi/NCR53c406a.c
index 3896278594c7..d4613815f685 100644
--- a/drivers/scsi/NCR53c406a.c
+++ b/drivers/scsi/NCR53c406a.c
@@ -168,7 +168,7 @@ enum Phase {
 };
 
 /* Static function prototypes */
-static void NCR53c406a_intr(int, void *);
+static void NCR53c406a_intr(void *);
 static irqreturn_t do_NCR53c406a_intr(int, void *);
 static void chip_init(void);
 static void calc_port_addr(void);
@@ -685,7 +685,7 @@ static void wait_intr(void)
                 return;
         }
 
-        NCR53c406a_intr(0, NULL, NULL);
+        NCR53c406a_intr(NULL);
 }
 #endif
 
@@ -767,12 +767,12 @@ static irqreturn_t do_NCR53c406a_intr(int unused, void *dev_id)
         struct Scsi_Host *dev = dev_id;
 
         spin_lock_irqsave(dev->host_lock, flags);
-        NCR53c406a_intr(0, dev_id);
+        NCR53c406a_intr(dev_id);
         spin_unlock_irqrestore(dev->host_lock, flags);
         return IRQ_HANDLED;
 }
 
-static void NCR53c406a_intr(int unused, void *dev_id)
+static void NCR53c406a_intr(void *dev_id)
 {
         DEB(unsigned char fifo_size;
             )
diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index e04c2bc1932b..a0d1cee0be77 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -759,12 +759,7 @@ static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, Scsi_Cmnd *SCp)
 
 static irqreturn_t swintr(int irqno, void *dev_id)
 {
-        struct Scsi_Host *shpnt = (struct Scsi_Host *)dev_id;
-
-        if (!shpnt) {
-                printk(KERN_ERR "aha152x: catched software interrupt %d for unknown controller.\n", irqno);
-                return IRQ_NONE;
-        }
+        struct Scsi_Host *shpnt = dev_id;
 
         HOSTDATA(shpnt)->swint++;
 
diff --git a/drivers/scsi/aic7xxx_old.c b/drivers/scsi/aic7xxx_old.c
index 7f0adf9c4c7e..bcd7fffab907 100644
--- a/drivers/scsi/aic7xxx_old.c
+++ b/drivers/scsi/aic7xxx_old.c
@@ -6345,12 +6345,12 @@ aic7xxx_handle_command_completion_intr(struct aic7xxx_host *p)
  *   SCSI controller interrupt handler.
  *-F*************************************************************************/
 static void
-aic7xxx_isr(int irq, void *dev_id)
+aic7xxx_isr(void *dev_id)
 {
   struct aic7xxx_host *p;
   unsigned char intstat;
 
-  p = (struct aic7xxx_host *)dev_id;
+  p = dev_id;
 
   /*
    * Just a few sanity checks.  Make sure that we have an int pending.
@@ -6489,7 +6489,7 @@ do_aic7xxx_isr(int irq, void *dev_id)
   p->flags |= AHC_IN_ISR;
   do
   {
-    aic7xxx_isr(irq, dev_id);
+    aic7xxx_isr(dev_id);
   } while ( (aic_inb(p, INTSTAT) & INT_PEND) );
   aic7xxx_done_cmds_complete(p);
   aic7xxx_run_waiting_queues(p);
@@ -10377,7 +10377,7 @@ static int __aic7xxx_bus_device_reset(struct scsi_cmnd *cmd)
 
   hscb = scb->hscb;
 
-  aic7xxx_isr(p->irq, (void *)p);
+  aic7xxx_isr(p);
   aic7xxx_done_cmds_complete(p);
   /* If the command was already complete or just completed, then we didn't
    * do a reset, return FAILED */
@@ -10608,7 +10608,7 @@ static int __aic7xxx_abort(struct scsi_cmnd *cmd)
   else
     return FAILED;
 
-  aic7xxx_isr(p->irq, (void *)p);
+  aic7xxx_isr(p);
   aic7xxx_done_cmds_complete(p);
   /* If the command was already complete or just completed, then we didn't
    * do a reset, return FAILED */
@@ -10863,7 +10863,7 @@ static int aic7xxx_reset(struct scsi_cmnd *cmd)
 
   while((aic_inb(p, INTSTAT) & INT_PEND) && !(p->flags & AHC_IN_ISR))
   {
-    aic7xxx_isr(p->irq, p);
+    aic7xxx_isr(p);
     pause_sequencer(p);
   }
   aic7xxx_done_cmds_complete(p);
diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index 81e3ee51d897..23f5e418ab55 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -1815,7 +1815,7 @@ static void dc395x_handle_interrupt(struct AdapterCtlBlk *acb,
 
 static irqreturn_t dc395x_interrupt(int irq, void *dev_id)
 {
-        struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)dev_id;
+        struct AdapterCtlBlk *acb = dev_id;
         u16 scsi_status;
         u8 dma_status;
         irqreturn_t handled = IRQ_NONE;
diff --git a/drivers/scsi/qlogicfas408.c b/drivers/scsi/qlogicfas408.c
index 1a7de3bd796f..e0725353c99c 100644
--- a/drivers/scsi/qlogicfas408.c
+++ b/drivers/scsi/qlogicfas408.c
@@ -405,10 +405,10 @@ static unsigned int ql_pcmd(Scsi_Cmnd * cmd)
  *      Interrupt handler 
  */
 
-static void ql_ihandl(int irq, void *dev_id)
+static void ql_ihandl(void *dev_id)
 {
         Scsi_Cmnd *icmd;
-        struct Scsi_Host *host = (struct Scsi_Host *)dev_id;
+        struct Scsi_Host *host = dev_id;
         struct qlogicfas408_priv *priv = get_priv_by_host(host);
         int qbase = priv->qbase;
         REG0;
@@ -438,7 +438,7 @@ irqreturn_t qlogicfas408_ihandl(int irq, void *dev_id)
         struct Scsi_Host *host = dev_id;
 
         spin_lock_irqsave(host->host_lock, flags);
-        ql_ihandl(irq, dev_id);
+        ql_ihandl(dev_id);
         spin_unlock_irqrestore(host->host_lock, flags);
         return IRQ_HANDLED;
 }
diff --git a/drivers/scsi/tmscsim.c b/drivers/scsi/tmscsim.c
index 0f0ac925d319..d03aa6ce8fe8 100644
--- a/drivers/scsi/tmscsim.c
+++ b/drivers/scsi/tmscsim.c
@@ -700,9 +700,9 @@ dc390_InvalidCmd(struct dc390_acb* pACB)
 
 
 static irqreturn_t __inline__
-DC390_Interrupt(int irq, void *dev_id)
+DC390_Interrupt(void *dev_id)
 {
-    struct dc390_acb *pACB = (struct dc390_acb*)dev_id;
+    struct dc390_acb *pACB = dev_id;
     struct dc390_dcb *pDCB;
     struct dc390_srb *pSRB;
     u8  sstatus=0;
@@ -811,12 +811,12 @@ DC390_Interrupt(int irq, void *dev_id)
     return IRQ_HANDLED;
 }
 
-static irqreturn_t do_DC390_Interrupt( int irq, void *dev_id)
+static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id)
 {
     irqreturn_t ret;
     DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
     /* Locking is done in DC390_Interrupt */
-    ret = DC390_Interrupt(irq, dev_id);
+    ret = DC390_Interrupt(dev_id);
     DEBUG1(printk (".. IRQ returned\n"));
     return ret;
 }
diff --git a/drivers/scsi/ultrastor.c b/drivers/scsi/ultrastor.c
index 107f0fc34949..56906aba5ee3 100644
--- a/drivers/scsi/ultrastor.c
+++ b/drivers/scsi/ultrastor.c
@@ -287,7 +287,7 @@ static const unsigned short ultrastor_ports_14f[] = {
 };
 #endif
 
-static void ultrastor_interrupt(int, void *);
+static void ultrastor_interrupt(void *);
 static irqreturn_t do_ultrastor_interrupt(int, void *);
 static inline void build_sg_list(struct mscp *, struct scsi_cmnd *SCpnt);
 
@@ -893,7 +893,7 @@ static int ultrastor_abort(struct scsi_cmnd *SCpnt)
         
         spin_lock_irqsave(host->host_lock, flags);
         /* FIXME: Ewww... need to think about passing host around properly */
-        ultrastor_interrupt(0, NULL);
+        ultrastor_interrupt(NULL);
         spin_unlock_irqrestore(host->host_lock, flags);
         return SUCCESS;
       }
@@ -1039,7 +1039,7 @@ int ultrastor_biosparam(struct scsi_device *sdev, struct block_device *bdev,
     return 0;
 }
 
-static void ultrastor_interrupt(int irq, void *dev_id)
+static void ultrastor_interrupt(void *dev_id)
 {
     unsigned int status;
 #if ULTRASTOR_MAX_CMDS > 1
@@ -1177,7 +1177,7 @@ static irqreturn_t do_ultrastor_interrupt(int irq, void *dev_id)
     struct Scsi_Host *dev = dev_id;
     
     spin_lock_irqsave(dev->host_lock, flags);
-    ultrastor_interrupt(irq, dev_id);
+    ultrastor_interrupt(dev_id);
     spin_unlock_irqrestore(dev->host_lock, flags);
     return IRQ_HANDLED;
 }
diff --git a/drivers/serial/68360serial.c b/drivers/serial/68360serial.c
index 4e56ec803861..634ecca36a77 100644
--- a/drivers/serial/68360serial.c
+++ b/drivers/serial/68360serial.c
@@ -620,7 +620,7 @@ static void rs_360_interrupt(int vec, void *dev_id)
         volatile struct smc_regs *smcp;
         volatile struct scc_regs *sccp;
         
-        info = (ser_info_t *)dev_id;
+        info = dev_id;
 
         idx = PORT_NUM(info->state->smc_scc_num);
         if (info->state->smc_scc_num & NUM_IS_SCC) {
diff --git a/drivers/serial/jsm/jsm_neo.c b/drivers/serial/jsm/jsm_neo.c
index 8fa31e68989a..8be8da37f629 100644
--- a/drivers/serial/jsm/jsm_neo.c
+++ b/drivers/serial/jsm/jsm_neo.c
@@ -1116,7 +1116,7 @@ static void neo_param(struct jsm_channel *ch)
  */
 static irqreturn_t neo_intr(int irq, void *voidbrd)
 {
-        struct jsm_board *brd = (struct jsm_board *) voidbrd;
+        struct jsm_board *brd = voidbrd;
         struct jsm_channel *ch;
         int port = 0;
         int type = 0;
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c
index 039c2fd6d496..4f80c5b4a753 100644
--- a/drivers/serial/mpc52xx_uart.c
+++ b/drivers/serial/mpc52xx_uart.c
@@ -512,19 +512,11 @@ mpc52xx_uart_int_tx_chars(struct uart_port *port)
 static irqreturn_t 
 mpc52xx_uart_int(int irq, void *dev_id)
 {
-        struct uart_port *port = (struct uart_port *) dev_id;
+        struct uart_port *port = dev_id;
         unsigned long pass = ISR_PASS_LIMIT;
         unsigned int keepgoing;
         unsigned short status;
         
-        if ( irq != port->irq ) {
-                printk( KERN_WARNING
-                        "mpc52xx_uart_int : " \
-                        "Received wrong int %d. Waiting for %d\n",
-                       irq, port->irq);
-                return IRQ_NONE;
-        }
-        
         spin_lock(&port->lock);
         
         /* While we have stuff to do, we continue */
diff --git a/drivers/serial/netx-serial.c b/drivers/serial/netx-serial.c
index e92d7e1c22cf..062bad457b1a 100644
--- a/drivers/serial/netx-serial.c
+++ b/drivers/serial/netx-serial.c
@@ -247,7 +247,7 @@ static void netx_rxint(struct uart_port *port)
 
 static irqreturn_t netx_int(int irq, void *dev_id)
 {
-        struct uart_port *port = (struct uart_port *)dev_id;
+        struct uart_port *port = dev_id;
         unsigned long flags;
         unsigned char status;
 
diff --git a/drivers/serial/pxa.c b/drivers/serial/pxa.c
index 846089f222d4..415fe9633a9b 100644
--- a/drivers/serial/pxa.c
+++ b/drivers/serial/pxa.c
@@ -232,7 +232,7 @@ static inline void check_modem_status(struct uart_pxa_port *up)
  */
 static inline irqreturn_t serial_pxa_irq(int irq, void *dev_id)
 {
-        struct uart_pxa_port *up = (struct uart_pxa_port *)dev_id;
+        struct uart_pxa_port *up = dev_id;
         unsigned int iir, lsr;
 
         iir = serial_in(up, UART_IIR);
diff --git a/drivers/sn/ioc3.c b/drivers/sn/ioc3.c
index 3d91b6b9287d..cd6b65333b71 100644
--- a/drivers/sn/ioc3.c
+++ b/drivers/sn/ioc3.c
@@ -401,7 +401,7 @@ static inline uint32_t get_pending_intrs(struct ioc3_driver_data *idd)
 static irqreturn_t ioc3_intr_io(int irq, void *arg)
 {
         unsigned long flags;
-        struct ioc3_driver_data *idd = (struct ioc3_driver_data *)arg;
+        struct ioc3_driver_data *idd = arg;
         int handled = 1, id;
         unsigned int pending;
 
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) {
diff --git a/sound/isa/gus/gusmax.c b/sound/isa/gus/gusmax.c
index 52498c9d411e..c1c69e3cbfd0 100644
--- a/sound/isa/gus/gusmax.c
+++ b/sound/isa/gus/gusmax.c
@@ -107,7 +107,7 @@ static int __init snd_gusmax_detect(struct snd_gus_card * gus)
 
 static irqreturn_t snd_gusmax_interrupt(int irq, void *dev_id)
 {
-        struct snd_gusmax *maxcard = (struct snd_gusmax *) dev_id;
+        struct snd_gusmax *maxcard = dev_id;
         int loop, max = 5;
         int handled = 0;
 
diff --git a/sound/isa/gus/interwave.c b/sound/isa/gus/interwave.c
index 5c474b831edc..f12cd09d1fcc 100644
--- a/sound/isa/gus/interwave.c
+++ b/sound/isa/gus/interwave.c
@@ -301,7 +301,7 @@ static int __devinit snd_interwave_detect(struct snd_interwave *iwcard,
 
 static irqreturn_t snd_interwave_interrupt(int irq, void *dev_id)
 {
-        struct snd_interwave *iwcard = (struct snd_interwave *) dev_id;
+        struct snd_interwave *iwcard = dev_id;
         int loop, max = 5;
         int handled = 0;
 
diff --git a/sound/oss/es1371.c b/sound/oss/es1371.c
index 2562f4769b90..ddf6b0a0bca5 100644
--- a/sound/oss/es1371.c
+++ b/sound/oss/es1371.c
@@ -1102,7 +1102,7 @@ static void es1371_handle_midi(struct es1371_state *s)
 
 static irqreturn_t es1371_interrupt(int irq, void *dev_id)
 {
-        struct es1371_state *s = (struct es1371_state *)dev_id;
+        struct es1371_state *s = dev_id;
         unsigned int intsrc, sctl;
         
         /* fastpath out, to ease interrupt sharing */
diff --git a/sound/oss/hal2.c b/sound/oss/hal2.c
index 7807abac0625..784bdd707055 100644
--- a/sound/oss/hal2.c
+++ b/sound/oss/hal2.c
@@ -372,7 +372,7 @@ static void hal2_adc_interrupt(struct hal2_codec *adc)
 
 static irqreturn_t hal2_interrupt(int irq, void *dev_id)
 {
-        struct hal2_card *hal2 = (struct hal2_card*)dev_id;
+        struct hal2_card *hal2 = dev_id;
         irqreturn_t ret = IRQ_NONE;
 
         /* decide what caused this interrupt */
diff --git a/sound/oss/i810_audio.c b/sound/oss/i810_audio.c
index a48af879b466..240cc7939b69 100644
--- a/sound/oss/i810_audio.c
+++ b/sound/oss/i810_audio.c
@@ -1525,7 +1525,7 @@ static void i810_channel_interrupt(struct i810_card *card)
 
 static irqreturn_t i810_interrupt(int irq, void *dev_id)
 {
-        struct i810_card *card = (struct i810_card *)dev_id;
+        struct i810_card *card = dev_id;
         u32 status;
 
         spin_lock(&card->lock);
diff --git a/sound/oss/mpu401.c b/sound/oss/mpu401.c
index 58d4a5d05a27..e96220541971 100644
--- a/sound/oss/mpu401.c
+++ b/sound/oss/mpu401.c
@@ -435,7 +435,7 @@ static void mpu401_input_loop(struct mpu_config *devc)
 static irqreturn_t mpuintr(int irq, void *dev_id)
 {
         struct mpu_config *devc;
-        int dev = (int) dev_id;
+        int dev = (int)(unsigned long) dev_id;
         int handled = 0;
 
         devc = &dev_conf[dev];
diff --git a/sound/oss/vwsnd.c b/sound/oss/vwsnd.c
index 0cd4d6ec9862..6dfb9f4b03ec 100644
--- a/sound/oss/vwsnd.c
+++ b/sound/oss/vwsnd.c
@@ -2235,7 +2235,7 @@ static void vwsnd_audio_write_intr(vwsnd_dev_t *devc, unsigned int status)
 
 static irqreturn_t vwsnd_audio_intr(int irq, void *dev_id)
 {
-        vwsnd_dev_t *devc = (vwsnd_dev_t *) dev_id;
+        vwsnd_dev_t *devc = dev_id;
         unsigned int status;
 
         DBGEV("(irq=%d, dev_id=0x%p)\n", irq, dev_id);
diff --git a/sound/pci/korg1212/korg1212.c b/sound/pci/korg1212/korg1212.c
index 398aa10a06e8..fa8cd8cecc21 100644
--- a/sound/pci/korg1212/korg1212.c
+++ b/sound/pci/korg1212/korg1212.c
@@ -1124,9 +1124,6 @@ static irqreturn_t snd_korg1212_interrupt(int irq, void *dev_id)
         u32 doorbellValue;
         struct snd_korg1212 *korg1212 = dev_id;
 
-        if(irq != korg1212->irq)
-                return IRQ_NONE;
-
         doorbellValue = readl(korg1212->inDoorbellPtr);
 
         if (!doorbellValue)
@@ -1140,7 +1137,6 @@ static irqreturn_t snd_korg1212_interrupt(int irq, void *dev_id)
 
         korg1212->inIRQ++;
 
-
         switch (doorbellValue) {
                 case K1212_DB_DSPDownloadDone:
                         K1212_DEBUG_PRINTK("K1212_DEBUG: IRQ DNLD count - %ld, %x, [%s].\n",