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

* 'irq-upstream' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6:
  [SPARC, XEN, NET/CXGB3] use irq_handler_t where appropriate
  drivers/char/riscom8: clean up irq handling
  isdn/sc: irq handler clean
  isdn/act2000: fix major bug. clean irq handler.
  char/pcmcia/synclink_cs: trim trailing whitespace
  drivers/char/ip2: separate polling and irq-driven work entry points
  drivers/char/ip2: split out irq core logic into separate function
  [NETDRVR] lib82596, netxen: delete pointless tests from irq handler
  Eliminate pointless casts from void* in a few driver irq handlers.
  [PARPORT] Remove unused 'irq' argument from parport irq functions
  [PARPORT] Kill useful 'irq' arg from parport_{generic_irq,ieee1284_interrupt}
  [PARPORT] Consolidate code copies into a single generic irq handler

arch/sparc/kernel/irq.c

@@ -479,7 +479,7 @@ EXPORT_SYMBOL(pdma_areasize);
 
 extern void floppy_hardint(void);
 
-static irqreturn_t (*floppy_irq_handler)(int irq, void *dev_id);
+static irq_handler_t floppy_irq_handler;
 
 void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs)
 {
@@ -500,7 +500,7 @@ void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs)
 }
 
 int sparc_floppy_request_irq(int irq, unsigned long flags,
-			     irqreturn_t (*irq_handler)(int irq, void *))
+			     irq_handler_t irq_handler)
 {
 	floppy_irq_handler = irq_handler;
 	return request_fast_irq(irq, floppy_hardint, flags, "floppy");

arch/x86/xen/events.c

@@ -383,7 +383,7 @@ static void unbind_from_irq(unsigned int irq)
 }
 
 int bind_evtchn_to_irqhandler(unsigned int evtchn,
-			      irqreturn_t (*handler)(int, void *),
+			      irq_handler_t handler,
 			      unsigned long irqflags,
 			      const char *devname, void *dev_id)
 {
@@ -402,7 +402,7 @@ int bind_evtchn_to_irqhandler(unsigned int evtchn,
 EXPORT_SYMBOL_GPL(bind_evtchn_to_irqhandler);
 
 int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
-			    irqreturn_t (*handler)(int, void *),
+			    irq_handler_t handler,
 			    unsigned long irqflags, const char *devname, void *dev_id)
 {
 	unsigned int irq;

drivers/atm/horizon.c

@@ -1382,8 +1382,9 @@ static inline void rx_data_av_handler (hrz_dev * dev) {
 
 /********** interrupt handler **********/
 
-static irqreturn_t interrupt_handler(int irq, void *dev_id) {
-  hrz_dev * dev = (hrz_dev *) dev_id;
+static irqreturn_t interrupt_handler(int irq, void *dev_id)
+{
+  hrz_dev *dev = dev_id;
   u32 int_source;
   unsigned int irq_ok;
   

drivers/char/ip2/ip2main.c

@@ -752,7 +752,7 @@ retry:
 					continue;
 				rc = request_irq( ip2config.irq[i], ip2_interrupt,
 					IP2_SA_FLAGS | (ip2config.type[i] == PCI ? IRQF_SHARED : 0),
-					pcName, (void *)&pcName);
+					pcName, i2BoardPtrTable[i]);
 				if (rc) {
 					printk(KERN_ERR "IP2: an request_irq failed: error %d\n",rc);
 					ip2config.irq[i] = CIR_POLL;
@@ -1166,12 +1166,37 @@ ip2_interrupt_bh(struct work_struct *work)
 /*                                                                            */
 /*                                                                            */
 /******************************************************************************/
-static irqreturn_t
-ip2_interrupt(int irq, void *dev_id)
+static void
+ip2_irq_work(i2eBordStrPtr pB)
+{
+#ifdef USE_IQI
+	if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) {
+//		Disable his interrupt (will be enabled when serviced)
+//		This is mostly to protect from reentrancy.
+		iiDisableMailIrq(pB);
+
+//		Park the board on the immediate queue for processing.
+		schedule_work(&pB->tqueue_interrupt);
+
+//		Make sure the immediate queue is flagged to fire.
+	}
+#else
+
+//	We are using immediate servicing here.  This sucks and can
+//	cause all sorts of havoc with ppp and others.  The failsafe
+//	check on iiSendPendingMail could also throw a hairball.
+
+	i2ServiceBoard( pB );
+
+#endif /* USE_IQI */
+}
+
+static void
+ip2_polled_interrupt(void)
 {
 	int i;
 	i2eBordStrPtr  pB;
-	int handled = 0;
+	const int irq = 0;
 
 	ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, irq );
 
@@ -1183,32 +1208,28 @@ ip2_interrupt(int irq, void *dev_id)
 //			IRQ = 0 for polled boards, we won't poll "IRQ" boards
 
 		if ( pB && (pB->i2eUsingIrq == irq) ) {
-			handled = 1;
-#ifdef USE_IQI
+			ip2_irq_work(pB);
+		}
+	}
 
-		    if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) {
-//			Disable his interrupt (will be enabled when serviced)
-//			This is mostly to protect from reentrancy.
-			iiDisableMailIrq(pB);
+	++irq_counter;
 
-//			Park the board on the immediate queue for processing.
-			schedule_work(&pB->tqueue_interrupt);
+	ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
+}
 
-//			Make sure the immediate queue is flagged to fire.
-		    }
-#else
-//		We are using immediate servicing here.  This sucks and can
-//		cause all sorts of havoc with ppp and others.  The failsafe
-//		check on iiSendPendingMail could also throw a hairball.
-			i2ServiceBoard( pB );
-#endif /* USE_IQI */
-		}
-	}
+static irqreturn_t
+ip2_interrupt(int irq, void *dev_id)
+{
+	i2eBordStrPtr pB = dev_id;
+
+	ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, pB->i2eUsingIrq );
+
+	ip2_irq_work(pB);
 
 	++irq_counter;
 
 	ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
-	return IRQ_RETVAL(handled);
+	return IRQ_HANDLED;
 }
 
 /******************************************************************************/
@@ -1231,7 +1252,7 @@ ip2_poll(unsigned long arg)
 	// Just polled boards, IRQ = 0 will hit all non-interrupt boards.
 	// It will NOT poll boards handled by hard interrupts.
 	// The issue of queued BH interrups is handled in ip2_interrupt().
-	ip2_interrupt(0, NULL);
+	ip2_polled_interrupt();
 
 	PollTimer.expires = POLL_TIMEOUT;
 	add_timer( &PollTimer );

drivers/char/ppdev.c

@@ -267,9 +267,9 @@ static ssize_t pp_write (struct file * file, const char __user * buf,
 	return bytes_written;
 }
 
-static void pp_irq (int irq, void * private)
+static void pp_irq (void *private)
 {
-	struct pp_struct * pp = (struct pp_struct *) private;
+	struct pp_struct *pp = private;
 
 	if (pp->irqresponse) {
 		parport_write_control (pp->pdev->port, pp->irqctl);

drivers/char/riscom8.c

@@ -79,7 +79,6 @@
 
 #define RS_EVENT_WRITE_WAKEUP	0
 
-static struct riscom_board * IRQ_to_board[16];
 static struct tty_driver *riscom_driver;
 
 static struct riscom_board rc_board[RC_NBOARD] =  {
@@ -537,16 +536,14 @@ static inline void rc_check_modem(struct riscom_board const * bp)
 }
 
 /* The main interrupt processing routine */
-static irqreturn_t rc_interrupt(int irq, void * dev_id)
+static irqreturn_t rc_interrupt(int dummy, void * dev_id)
 {
 	unsigned char status;
 	unsigned char ack;
-	struct riscom_board *bp;
+	struct riscom_board *bp = dev_id;
 	unsigned long loop = 0;
 	int handled = 0;
 
-	bp = IRQ_to_board[irq];
-
 	if (!(bp->flags & RC_BOARD_ACTIVE))
 		return IRQ_NONE;
 
@@ -603,7 +600,7 @@ static irqreturn_t rc_interrupt(int irq, void * dev_id)
  */
 
 /* Called with disabled interrupts */
-static inline int rc_setup_board(struct riscom_board * bp)
+static int rc_setup_board(struct riscom_board * bp)
 {
 	int error;
 
@@ -611,7 +608,7 @@ static inline int rc_setup_board(struct riscom_board * bp)
 		return 0;
 	
 	error = request_irq(bp->irq, rc_interrupt, IRQF_DISABLED,
-			    "RISCom/8", NULL);
+			    "RISCom/8", bp);
 	if (error) 
 		return error;
 	
@@ -619,14 +616,13 @@ static inline int rc_setup_board(struct riscom_board * bp)
 	bp->DTR = ~0;
 	rc_out(bp, RC_DTR, bp->DTR);	        /* Drop DTR on all ports */
 	
-	IRQ_to_board[bp->irq] = bp;
 	bp->flags |= RC_BOARD_ACTIVE;
 	
 	return 0;
 }
 
 /* Called with disabled interrupts */
-static inline void rc_shutdown_board(struct riscom_board *bp)
+static void rc_shutdown_board(struct riscom_board *bp)
 {
 	if (!(bp->flags & RC_BOARD_ACTIVE))
 		return;
@@ -634,7 +630,6 @@ static inline void rc_shutdown_board(struct riscom_board *bp)
 	bp->flags &= ~RC_BOARD_ACTIVE;
 	
 	free_irq(bp->irq, NULL);
-	IRQ_to_board[bp->irq] = NULL;
 	
 	bp->DTR = ~0;
 	rc_out(bp, RC_DTR, bp->DTR);	       /* Drop DTR on all ports */
@@ -1594,7 +1589,6 @@ static inline int rc_init_drivers(void)
 	if (!riscom_driver)	
 		return -ENOMEM;
 	
-	memset(IRQ_to_board, 0, sizeof(IRQ_to_board));
 	riscom_driver->owner = THIS_MODULE;
 	riscom_driver->name = "ttyL";
 	riscom_driver->major = RISCOM8_NORMAL_MAJOR;

drivers/char/tpm/tpm_tis.c

@@ -381,7 +381,7 @@ static struct tpm_vendor_specific tpm_tis = {
 
 static irqreturn_t tis_int_probe(int irq, void *dev_id)
 {
-	struct tpm_chip *chip = (struct tpm_chip *) dev_id;
+	struct tpm_chip *chip = dev_id;
 	u32 interrupt;
 
 	interrupt = ioread32(chip->vendor.iobase +
@@ -401,7 +401,7 @@ static irqreturn_t tis_int_probe(int irq, void *dev_id)
 
 static irqreturn_t tis_int_handler(int irq, void *dev_id)
 {
-	struct tpm_chip *chip = (struct tpm_chip *) dev_id;
+	struct tpm_chip *chip = dev_id;
 	u32 interrupt;
 	int i;
 

drivers/input/serio/parkbd.c

@@ -102,7 +102,7 @@ static int parkbd_write(struct serio *port, unsigned char c)
 	return 0;
 }
 
-static void parkbd_interrupt(int irq, void *dev_id)
+static void parkbd_interrupt(void *dev_id)
 {
 
 	if (parkbd_writing) {

drivers/isdn/act2000/act2000_isa.c

@@ -61,7 +61,7 @@ act2000_isa_detect(unsigned short portbase)
 }
 
 static irqreturn_t
-act2000_isa_interrupt(int irq, void *dev_id)
+act2000_isa_interrupt(int dummy, void *dev_id)
 {
         act2000_card *card = dev_id;
         u_char istatus;
@@ -80,7 +80,7 @@ act2000_isa_interrupt(int irq, void *dev_id)
                 printk(KERN_WARNING "act2000: errIRQ\n");
         }
 	if (istatus)
-		printk(KERN_DEBUG "act2000: ?IRQ %d %02x\n", irq, istatus);
+		printk(KERN_DEBUG "act2000: ?IRQ %d %02x\n", card->irq, istatus);
 	return IRQ_HANDLED;
 }
 
@@ -131,6 +131,8 @@ act2000_isa_enable_irq(act2000_card * card)
 int
 act2000_isa_config_irq(act2000_card * card, short irq)
 {
+	int old_irq;
+
         if (card->flags & ACT2000_FLAGS_IVALID) {
                 free_irq(card->irq, card);
         }
@@ -139,8 +141,10 @@ act2000_isa_config_irq(act2000_card * card, short irq)
         if (!irq)
                 return 0;
 
-	if (!request_irq(irq, &act2000_isa_interrupt, 0, card->regname, card)) {
-		card->irq = irq;
+	old_irq = card->irq;
+	card->irq = irq;
+	if (request_irq(irq, &act2000_isa_interrupt, 0, card->regname, card)) {
+		card->irq = old_irq;
 		card->flags |= ACT2000_FLAGS_IVALID;
                 printk(KERN_WARNING
                        "act2000: Could not request irq %d\n",irq);

drivers/isdn/sc/init.c

@@ -334,7 +334,8 @@ static int __init sc_init(void)
 		 */
 		sc_adapter[cinst]->interrupt = irq[b];
 		if (request_irq(sc_adapter[cinst]->interrupt, interrupt_handler,
-				IRQF_DISABLED, interface->id, NULL))
+				IRQF_DISABLED, interface->id,
+				(void *)(unsigned long) cinst))
 		{
 			kfree(sc_adapter[cinst]->channel);
 			indicate_status(cinst, ISDN_STAT_UNLOAD, 0, NULL);	/* Fix me */

drivers/isdn/sc/interrupt.c

@@ -21,28 +21,15 @@
 #include "card.h"
 #include <linux/interrupt.h>
 
-static int get_card_from_irq(int irq)
-{
-	int i;
-
-	for(i = 0 ; i < cinst ; i++) {
-		if(sc_adapter[i]->interrupt == irq)
-			return i;
-	}
-	return -1;
-}
-
 /*
  * 
  */
-irqreturn_t interrupt_handler(int interrupt, void *cardptr)
+irqreturn_t interrupt_handler(int dummy, void *card_inst)
 {
 
 	RspMessage rcvmsg;
 	int channel;
-	int card;
-
-	card = get_card_from_irq(interrupt);
+	int card = (int)(unsigned long) card_inst;
 
 	if(!IS_VALID_CARD(card)) {
 		pr_debug("Invalid param: %d is not a valid card id\n", card);

drivers/mtd/onenand/onenand_base.c

@@ -359,7 +359,7 @@ static int onenand_wait(struct mtd_info *mtd, int state)
  */
 static irqreturn_t onenand_interrupt(int irq, void *data)
 {
-	struct onenand_chip *this = (struct onenand_chip *) data;
+	struct onenand_chip *this = data;
 
 	/* To handle shared interrupt */
 	if (!this->complete.done)

drivers/net/cxgb3/adapter.h

@@ -46,8 +46,6 @@
 #include <asm/semaphore.h>
 #include <asm/io.h>
 
-typedef irqreturn_t(*intr_handler_t) (int, void *);
-
 struct vlan_group;
 struct adapter;
 struct sge_qset;
@@ -270,7 +268,7 @@ void t3_sge_start(struct adapter *adap);
 void t3_sge_stop(struct adapter *adap);
 void t3_free_sge_resources(struct adapter *adap);
 void t3_sge_err_intr_handler(struct adapter *adapter);
-intr_handler_t t3_intr_handler(struct adapter *adap, int polling);
+irq_handler_t t3_intr_handler(struct adapter *adap, int polling);
 int t3_eth_xmit(struct sk_buff *skb, struct net_device *dev);
 int t3_mgmt_tx(struct adapter *adap, struct sk_buff *skb);
 void t3_update_qset_coalesce(struct sge_qset *qs, const struct qset_params *p);

drivers/net/cxgb3/sge.c

@@ -2431,7 +2431,7 @@ static irqreturn_t t3b_intr_napi(int irq, void *cookie)
  *	(MSI-X, MSI, or legacy) and whether NAPI will be used to service the
  *	response queues.
  */
-intr_handler_t t3_intr_handler(struct adapter *adap, int polling)
+irq_handler_t t3_intr_handler(struct adapter *adap, int polling)
 {
 	if (adap->flags & USING_MSIX)
 		return polling ? t3_sge_intr_msix_napi : t3_sge_intr_msix;

drivers/net/hamradio/baycom_epp.c

@@ -325,12 +325,6 @@ static int eppconfig(struct baycom_state *bc)
 
 /* ---------------------------------------------------------------------- */
 
-static void epp_interrupt(int irq, void *dev_id)
-{
-}
-
-/* ---------------------------------------------------------------------- */
-
 static inline void do_kiss_params(struct baycom_state *bc,
 				  unsigned char *data, unsigned long len)
 {
@@ -871,7 +865,7 @@ static int epp_open(struct net_device *dev)
 	}
 	memset(&bc->modem, 0, sizeof(bc->modem));
         bc->pdev = parport_register_device(pp, dev->name, NULL, epp_wakeup, 
-					epp_interrupt, PARPORT_DEV_EXCL, dev);
+					   NULL, PARPORT_DEV_EXCL, dev);
 	parport_put_port(pp);
         if (!bc->pdev) {
                 printk(KERN_ERR "%s: cannot register parport at 0x%lx\n", bc_drvname, pp->base);

drivers/net/hamradio/baycom_par.c

@@ -270,9 +270,9 @@ static __inline__ void par96_rx(struct net_device *dev, struct baycom_state *bc)
 
 /* --------------------------------------------------------------------- */
 
-static void par96_interrupt(int irq, void *dev_id)
+static void par96_interrupt(void *dev_id)
 {
-	struct net_device *dev = (struct net_device *)dev_id;
+	struct net_device *dev = dev_id;
 	struct baycom_state *bc = netdev_priv(dev);
 
 	baycom_int_freq(bc);

drivers/net/lib82596.c

@@ -1124,12 +1124,6 @@ static irqreturn_t i596_interrupt(int irq, void *dev_id)
 	struct i596_dma *dma;
 	unsigned short status, ack_cmd = 0;
 
-	if (dev == NULL) {
-		printk(KERN_WARNING "%s: irq %d for unknown device.\n",
-		       __FUNCTION__, irq);
-		return IRQ_NONE;
-	}
-
 	lp = netdev_priv(dev);
 	dma = lp->dma;
 
@@ -1140,7 +1134,7 @@ static irqreturn_t i596_interrupt(int irq, void *dev_id)
 
 	DEB(DEB_INTS, printk(KERN_DEBUG
 			     "%s: i596 interrupt, IRQ %d, status %4.4x.\n",
-			dev->name, irq, status));
+			dev->name, dev->irq, status));
 
 	ack_cmd = status & 0xf000;
 

drivers/net/netxen/netxen_nic_main.c

@@ -1268,17 +1268,10 @@ netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev)
  */
 irqreturn_t netxen_intr(int irq, void *data)
 {
-	struct netxen_adapter *adapter;
-	struct net_device *netdev;
+	struct netxen_adapter *adapter = data;
+	struct net_device *netdev = adapter->netdev;
 	u32 our_int = 0;
 
-	if (unlikely(!irq)) {
-		return IRQ_NONE;	/* Not our interrupt */
-	}
-
-	adapter = (struct netxen_adapter *)data;
-	netdev  = adapter->netdev;
-
 	if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
 		our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
 		/* not our interrupt */

drivers/net/plip.c

@@ -143,7 +143,7 @@ static void plip_bh(struct work_struct *work);
 static void plip_timer_bh(struct work_struct *work);
 
 /* Interrupt handler */
-static void plip_interrupt(int irq, void *dev_id);
+static void plip_interrupt(void *dev_id);
 
 /* Functions for DEV methods */
 static int plip_tx_packet(struct sk_buff *skb, struct net_device *dev);
@@ -380,7 +380,7 @@ plip_timer_bh(struct work_struct *work)
 		container_of(work, struct net_local, timer.work);
 
 	if (!(atomic_read (&nl->kill_timer))) {
-		plip_interrupt (-1, nl->dev);
+		plip_interrupt (nl->dev);
 
 		schedule_delayed_work(&nl->timer, 1);
 	}
@@ -897,7 +897,7 @@ plip_error(struct net_device *dev, struct net_local *nl,
 
 /* Handle the parallel port interrupts. */
 static void
-plip_interrupt(int irq, void *dev_id)
+plip_interrupt(void *dev_id)
 {
 	struct net_device *dev = dev_id;
 	struct net_local *nl;

drivers/net/typhoon.c

@@ -1801,7 +1801,7 @@ typhoon_poll(struct napi_struct *napi, int budget)
 static irqreturn_t
 typhoon_interrupt(int irq, void *dev_instance)
 {
-	struct net_device *dev = (struct net_device *) dev_instance;
+	struct net_device *dev = dev_instance;
 	struct typhoon *tp = dev->priv;
 	void __iomem *ioaddr = tp->ioaddr;
 	u32 intr_status;

drivers/net/ucc_geth.c

@@ -3607,7 +3607,7 @@ static int ucc_geth_poll(struct napi_struct *napi, int budget)
 
 static irqreturn_t ucc_geth_irq_handler(int irq, void *info)
 {
-	struct net_device *dev = (struct net_device *)info;
+	struct net_device *dev = info;
 	struct ucc_geth_private *ugeth = netdev_priv(dev);
 	struct ucc_fast_private *uccf;
 	struct ucc_geth_info *ug_info;

drivers/net/wan/sbni.c

@@ -502,8 +502,8 @@ sbni_start_xmit( struct sk_buff  *skb,  struct net_device  *dev )
 static irqreturn_t
 sbni_interrupt( int  irq,  void  *dev_id )
 {
-	struct net_device	  *dev = (struct net_device *) dev_id;
-	struct net_local  *nl  = (struct net_local *) dev->priv;
+	struct net_device	  *dev = dev_id;
+	struct net_local  *nl  = dev->priv;
 	int	repeat;
 
 	spin_lock( &nl->lock );

drivers/parport/daisy.c

@@ -199,11 +199,6 @@ void parport_daisy_fini(struct parport *port)
  *	parport_open - find a device by canonical device number
  *	@devnum: canonical device number
  *	@name: name to associate with the device
- *	@pf: preemption callback
- *	@kf: kick callback
- *	@irqf: interrupt handler
- *	@flags: registration flags
- *	@handle: driver data
  *
  *	This function is similar to parport_register_device(), except
  *	that it locates a device by its number rather than by the port
@@ -214,10 +209,7 @@ void parport_daisy_fini(struct parport *port)
  *	for parport_register_device().
  **/
 
-struct pardevice *parport_open(int devnum, const char *name,
-				int (*pf) (void *), void (*kf) (void *),
-				void (*irqf) (int, void *),
-				int flags, void *handle)
+struct pardevice *parport_open(int devnum, const char *name)
 {
 	struct daisydev *p = topology;
 	struct parport *port;
@@ -237,8 +229,7 @@ struct pardevice *parport_open(int devnum, const char *name,
 	port = parport_get_port(p->port);
 	spin_unlock(&topology_lock);
 
-	dev = parport_register_device(port, name, pf, kf,
-				       irqf, flags, handle);
+	dev = parport_register_device(port, name, NULL, NULL, NULL, 0, NULL);
 	parport_put_port(port);
 	if (!dev)
 		return NULL;

drivers/parport/ieee1284.c

@@ -571,7 +571,7 @@ static int parport_ieee1284_ack_data_avail (struct parport *port)
 #endif /* IEEE1284 support */
 
 /* Handle an interrupt. */
-void parport_ieee1284_interrupt (int which, void *handle)
+void parport_ieee1284_interrupt (void *handle)
 {
 	struct parport *port = handle;
 	parport_ieee1284_wakeup (port);

drivers/parport/parport_amiga.c

@@ -137,13 +137,6 @@ static unsigned char amiga_read_status(struct parport *p)
 	return status;
 }
 
-/* as this ports irq handling is already done, we use a generic funktion */
-static irqreturn_t amiga_interrupt(int irq, void *dev_id)
-{
-	parport_generic_irq(irq, (struct parport *) dev_id);
-	return IRQ_HANDLED;
-}
-
 static void amiga_enable_irq(struct parport *p)
 {
 	enable_irq(IRQ_AMIGA_CIAA_FLG);
@@ -255,7 +248,7 @@ static int __init parport_amiga_init(void)
 	if (!p)
 		goto out_port;
 
-	err = request_irq(IRQ_AMIGA_CIAA_FLG, amiga_interrupt, 0, p->name, p);
+	err = request_irq(IRQ_AMIGA_CIAA_FLG, parport_irq_handler, 0, p->name, p);
 	if (err)
 		goto out_irq;
 

drivers/parport/parport_atari.c

@@ -103,13 +103,6 @@ parport_atari_restore_state(struct parport *p, struct parport_state *s)
 {
 }
 
-static irqreturn_t
-parport_atari_interrupt(int irq, void *dev_id)
-{
-	parport_generic_irq(irq, (struct parport *) dev_id);
-	return IRQ_HANDLED;
-}
-
 static void
 parport_atari_enable_irq(struct parport *p)
 {
@@ -208,7 +201,7 @@ static int __init parport_atari_init(void)
 					  &parport_atari_ops);
 		if (!p)
 			return -ENODEV;
-		if (request_irq(IRQ_MFP_BUSY, parport_atari_interrupt,
+		if (request_irq(IRQ_MFP_BUSY, parport_irq_handler,
 				IRQ_TYPE_SLOW, p->name, p)) {
 			parport_put_port (p);
 			return -ENODEV;

drivers/parport/parport_ax88796.c

@@ -232,14 +232,6 @@ parport_ax88796_restore_state(struct parport *p, struct parport_state *s)
 	writeb(s->u.ax88796.cpr, dd->spp_cpr);
 }
 
-static irqreturn_t
-parport_ax88796_interrupt(int irq, void *dev_id)
-{
-        parport_generic_irq(irq, dev_id);
-        return IRQ_HANDLED;
-}
-
-
 static struct parport_operations parport_ax88796_ops = {
 	.write_data	= parport_ax88796_write_data,
 	.read_data	= parport_ax88796_read_data,
@@ -344,7 +336,7 @@ static int parport_ax88796_probe(struct platform_device *pdev)
 
 	if (irq >= 0) {
 		/* request irq */
-		ret = request_irq(irq, parport_ax88796_interrupt,
+		ret = request_irq(irq, parport_irq_handler,
 				  IRQF_TRIGGER_FALLING, pdev->name, pp);
 
 		if (ret < 0)

drivers/parport/parport_gsc.c

@@ -80,12 +80,6 @@ static int clear_epp_timeout(struct parport *pb)
  * of these are in parport_gsc.h.
  */
 
-static irqreturn_t parport_gsc_interrupt(int irq, void *dev_id)
-{
-	parport_generic_irq(irq, (struct parport *) dev_id);
-	return IRQ_HANDLED;
-}
-
 void parport_gsc_init_state(struct pardevice *dev, struct parport_state *s)
 {
 	s->u.pc.ctr = 0xc | (dev->irq_func ? 0x10 : 0x0);
@@ -324,7 +318,7 @@ struct parport *__devinit parport_gsc_probe_port (unsigned long base,
 	printk("]\n");
 
 	if (p->irq != PARPORT_IRQ_NONE) {
-		if (request_irq (p->irq, parport_gsc_interrupt,
+		if (request_irq (p->irq, parport_irq_handler,
 				 0, p->name, p)) {
 			printk (KERN_WARNING "%s: irq %d in use, "
 				"resorting to polled operation\n",

drivers/parport/parport_ip32.c

@@ -778,14 +778,16 @@ static irqreturn_t parport_ip32_interrupt(int irq, void *dev_id)
 	struct parport * const p = dev_id;
 	struct parport_ip32_private * const priv = p->physport->private_data;
 	enum parport_ip32_irq_mode irq_mode = priv->irq_mode;
+
 	switch (irq_mode) {
 	case PARPORT_IP32_IRQ_FWD:
-		parport_generic_irq(irq, p);
-		break;
+		return parport_irq_handler(irq, dev_id);
+
 	case PARPORT_IP32_IRQ_HERE:
 		parport_ip32_wakeup(p);
 		break;
 	}
+
 	return IRQ_HANDLED;
 }
 

drivers/parport/parport_mfc3.c

@@ -219,7 +219,7 @@ static irqreturn_t mfc3_interrupt(int irq, void *dev_id)
 		if (this_port[i] != NULL)
 			if (pia(this_port[i])->crb & 128) { /* Board caused interrupt */
 				dummy = pia(this_port[i])->pprb; /* clear irq bit */
-				parport_generic_irq(irq, this_port[i]);
+				parport_generic_irq(this_port[i]);
 			}
 	return IRQ_HANDLED;
 }

drivers/parport/parport_pc.c

@@ -272,13 +272,6 @@ static int clear_epp_timeout(struct parport *pb)
  * of these are in parport_pc.h.
  */
 
-static irqreturn_t parport_pc_interrupt(int irq, void *dev_id)
-{
-	parport_generic_irq(irq, (struct parport *) dev_id);
-	/* FIXME! Was it really ours? */
-	return IRQ_HANDLED;
-}
-
 static void parport_pc_init_state(struct pardevice *dev, struct parport_state *s)
 {
 	s->u.pc.ctr = 0xc;
@@ -2301,7 +2294,7 @@ struct parport *parport_pc_probe_port (unsigned long int base,
 		EPP_res = NULL;
 	}
 	if (p->irq != PARPORT_IRQ_NONE) {
-		if (request_irq (p->irq, parport_pc_interrupt,
+		if (request_irq (p->irq, parport_irq_handler,
 				 0, p->name, p)) {
 			printk (KERN_WARNING "%s: irq %d in use, "
 				"resorting to polled operation\n",

drivers/parport/parport_sunbpp.c

@@ -46,12 +46,6 @@
 #define dprintk(x)
 #endif
 
-static irqreturn_t parport_sunbpp_interrupt(int irq, void *dev_id)
-{
-	parport_generic_irq(irq, (struct parport *) dev_id);
-	return IRQ_HANDLED;
-}
-
 static void parport_sunbpp_disable_irq(struct parport *p)
 {
 	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
@@ -324,7 +318,7 @@ static int __devinit init_one_port(struct sbus_dev *sdev)
 	p->size = size;
 	p->dev = &sdev->ofdev.dev;
 
-	if ((err = request_irq(p->irq, parport_sunbpp_interrupt,
+	if ((err = request_irq(p->irq, parport_irq_handler,
 			       IRQF_SHARED, p->name, p)) != 0) {
 		goto out_put_port;
 	}

drivers/parport/probe.c

@@ -255,8 +255,7 @@ static ssize_t parport_read_device_id (struct parport *port, char *buffer,
 ssize_t parport_device_id (int devnum, char *buffer, size_t count)
 {
 	ssize_t retval = -ENXIO;
-	struct pardevice *dev = parport_open (devnum, "Device ID probe",
-					      NULL, NULL, NULL, 0, NULL);
+	struct pardevice *dev = parport_open (devnum, "Device ID probe");
 	if (!dev)
 		return -ENXIO;
 

drivers/parport/share.c

@@ -524,7 +524,7 @@ void parport_remove_port(struct parport *port)
 struct pardevice *
 parport_register_device(struct parport *port, const char *name,
 			int (*pf)(void *), void (*kf)(void *),
-			void (*irq_func)(int, void *), 
+			void (*irq_func)(void *), 
 			int flags, void *handle)
 {
 	struct pardevice *tmp;
@@ -995,6 +995,15 @@ void parport_release(struct pardevice *dev)
 	}
 }
 
+irqreturn_t parport_irq_handler(int irq, void *dev_id)
+{
+	struct parport *port = dev_id;
+
+	parport_generic_irq(port);
+
+	return IRQ_HANDLED;
+}
+
 /* Exported symbols for modules. */
 
 EXPORT_SYMBOL(parport_claim);
@@ -1011,5 +1020,6 @@ EXPORT_SYMBOL(parport_get_port);
 EXPORT_SYMBOL(parport_put_port);
 EXPORT_SYMBOL(parport_find_number);
 EXPORT_SYMBOL(parport_find_base);
+EXPORT_SYMBOL(parport_irq_handler);
 
 MODULE_LICENSE("GPL");

drivers/usb/misc/uss720.c

@@ -128,7 +128,7 @@ static void async_complete(struct urb *urb)
 #endif
 		/* if nAck interrupts are enabled and we have an interrupt, call the interrupt procedure */
 		if (rq->reg[2] & rq->reg[1] & 0x10 && pp)
-			parport_generic_irq(0, pp);
+			parport_generic_irq(pp);
 	}
 	complete(&rq->compl);
 	kref_put(&rq->ref_count, destroy_async);
@@ -337,7 +337,7 @@ static int uss720_irq(int usbstatus, void *buffer, int len, void *dev_id)
 	memcpy(priv->reg, buffer, 4);
 	/* if nAck interrupts are enabled and we have an interrupt, call the interrupt procedure */
 	if (priv->reg[2] & priv->reg[1] & 0x10)
-		parport_generic_irq(0, pp);
+		parport_generic_irq(pp);
 	return 1;
 }
 #endif

include/linux/parport.h

@@ -100,6 +100,7 @@ typedef enum {
 #include <linux/proc_fs.h>
 #include <linux/spinlock.h>
 #include <linux/wait.h>
+#include <linux/irqreturn.h>
 #include <asm/system.h>
 #include <asm/ptrace.h>
 #include <asm/semaphore.h>
@@ -229,7 +230,7 @@ struct pardevice {
 	int (*preempt)(void *);
 	void (*wakeup)(void *);
 	void *private;
-	void (*irq_func)(int, void *);
+	void (*irq_func)(void *);
 	unsigned int flags;
 	struct pardevice *next;
 	struct pardevice *prev;
@@ -366,6 +367,9 @@ extern void parport_unregister_driver (struct parport_driver *);
 extern struct parport *parport_find_number (int);
 extern struct parport *parport_find_base (unsigned long);
 
+/* generic irq handler, if it suits your needs */
+extern irqreturn_t parport_irq_handler(int irq, void *dev_id);
+
 /* Reference counting for ports. */
 extern struct parport *parport_get_port (struct parport *);
 extern void parport_put_port (struct parport *);
@@ -379,7 +383,7 @@ extern void parport_put_port (struct parport *);
 struct pardevice *parport_register_device(struct parport *port, 
 			  const char *name,
 			  int (*pf)(void *), void (*kf)(void *),
-			  void (*irq_func)(int, void *), 
+			  void (*irq_func)(void *), 
 			  int flags, void *handle);
 
 /* parport_unregister unlinks a device from the chain. */
@@ -461,7 +465,7 @@ static __inline__ int parport_yield_blocking(struct pardevice *dev)
 #define PARPORT_FLAG_EXCL		(1<<1)	/* EXCL driver registered. */
 
 /* IEEE1284 functions */
-extern void parport_ieee1284_interrupt (int, void *);
+extern void parport_ieee1284_interrupt (void *);
 extern int parport_negotiate (struct parport *, int mode);
 extern ssize_t parport_write (struct parport *, const void *buf, size_t len);
 extern ssize_t parport_read (struct parport *, void *buf, size_t len);
@@ -503,23 +507,19 @@ extern size_t parport_ieee1284_epp_read_addr (struct parport *,
 /* IEEE1284.3 functions */
 extern int parport_daisy_init (struct parport *port);
 extern void parport_daisy_fini (struct parport *port);
-extern struct pardevice *parport_open (int devnum, const char *name,
-				       int (*pf) (void *),
-				       void (*kf) (void *),
-				       void (*irqf) (int, void *),
-				       int flags, void *handle);
+extern struct pardevice *parport_open (int devnum, const char *name);
 extern void parport_close (struct pardevice *dev);
 extern ssize_t parport_device_id (int devnum, char *buffer, size_t len);
 extern void parport_daisy_deselect_all (struct parport *port);
 extern int parport_daisy_select (struct parport *port, int daisy, int mode);
 
 /* Lowlevel drivers _can_ call this support function to handle irqs.  */
-static __inline__ void parport_generic_irq(int irq, struct parport *port)
+static inline void parport_generic_irq(struct parport *port)
 {
-	parport_ieee1284_interrupt (irq, port);
+	parport_ieee1284_interrupt (port);
 	read_lock(&port->cad_lock);
 	if (port->cad && port->cad->irq_func)
-		port->cad->irq_func(irq, port->cad->private);
+		port->cad->irq_func(port->cad->private);
 	read_unlock(&port->cad_lock);
 }
 

sound/drivers/mts64.c

@@ -830,7 +830,7 @@ static int __devinit snd_mts64_rawmidi_create(struct snd_card *card)
 /*********************************************************************
  * parport stuff
  *********************************************************************/
-static void snd_mts64_interrupt(int irq, void *private)
+static void snd_mts64_interrupt(void *private)
 {
 	struct mts64 *mts = ((struct snd_card*)private)->private_data;
 	u16 ret;

sound/drivers/portman2x4.c

@@ -611,7 +611,7 @@ static int __devinit snd_portman_rawmidi_create(struct snd_card *card)
 /*********************************************************************
  * parport stuff
  *********************************************************************/
-static void snd_portman_interrupt(int irq, void *userdata)
+static void snd_portman_interrupt(void *userdata)
 {
 	unsigned char midivalue = 0;
 	struct portman *pm = ((struct snd_card*)userdata)->private_data;