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    SubjectRe: [PATCH 4/9] irq-remove: driver non-trivial
    Date
    Jeff Garzik <jeff@garzik.org> writes:

    > commit 654f4a242cac0148ffe98ce288c9116e65b08e44
    > Author: Jeff Garzik <jeff@garzik.org>
    > Date: Fri Oct 19 00:47:17 2007 -0400
    >
    > [IRQ ARG REMOVAL] non-trivial driver updates

    Ok. You have some random cleanups as buried in this patch
    as well as the necessary changes to remove the irq argument
    of the interrupt handler.

    > drivers/atm/ambassador.c | 5 +++--
    > drivers/bluetooth/btuart_cs.c | 2 +-
    > drivers/bluetooth/dtl1_cs.c | 2 +-
    > drivers/char/cyclades.c | 21 +++------------------
    > drivers/char/ip2/ip2main.c | 10 +++++-----
    > drivers/char/mwave/tp3780i.c | 10 ++++++----
    > drivers/char/pcmcia/synclink_cs.c | 8 ++++----
    > drivers/char/rio/rio_linux.c | 14 ++++++++------
    > drivers/char/riscom8.c | 4 ++--
    > drivers/char/specialix.c | 7 ++++---
    > drivers/char/sx.c | 14 +++++++-------
    > drivers/char/synclink.c | 4 ++--
    > drivers/char/synclink_gt.c | 9 ++++-----
    > drivers/char/synclinkmp.c | 7 +++----
    > drivers/char/tpm/tpm_tis.c | 6 +++---
    > drivers/ide/ide-io.c | 8 ++++----
    > drivers/input/serio/i8042.c | 9 +++++----
    > drivers/isdn/act2000/act2000_isa.c | 3 ++-
    > drivers/isdn/hisax/amd7930_fn.c | 2 +-
    > drivers/isdn/hisax/hisax.h | 2 +-
    > drivers/isdn/hisax/icc.c | 2 +-
    > drivers/isdn/hisax/isac.c | 2 +-
    > drivers/isdn/hisax/w6692.c | 4 ++--
    > drivers/isdn/sc/interrupt.c | 3 ++-
    > drivers/macintosh/via-macii.c | 6 +++---
    > drivers/macintosh/via-maciisi.c | 9 ++++-----
    > drivers/macintosh/via-pmu68k.c | 10 +++++-----
    > drivers/media/video/planb.c | 7 ++++---
    > drivers/net/eexpress.c | 5 +++--
    > drivers/net/forcedeth.c | 26 +++++++++++++-------------
    > drivers/net/hamradio/scc.c | 6 +++---
    > drivers/net/irda/au1k_ir.c | 8 +++++---
    > drivers/net/irda/smsc-ircc2.c | 6 +++---
    > drivers/net/irda/via-ircc.c | 6 +++---
    > drivers/net/lib82596.c | 2 +-
    > drivers/net/netxen/netxen_nic_main.c | 4 ++--
    > drivers/net/pcmcia/fmvj18x_cs.c | 6 +++---
    > drivers/net/phy/phy.c | 4 ++--
    > drivers/net/wan/sdla.c | 5 +++--
    > drivers/pcmcia/i82365.c | 13 +++++++------
    > drivers/pcmcia/tcic.c | 10 +++++-----
    > drivers/rtc/rtc-ds1374.c | 3 ++-
    > drivers/scsi/NCR5380.c | 6 +++---
    > drivers/scsi/NCR53C9x.c | 7 ++++---
    > drivers/scsi/aha152x.c | 4 ++--
    > drivers/scsi/aha1542.c | 5 +++--
    > drivers/scsi/eata.c | 19 ++++++++++---------
    > drivers/scsi/psi240i.c | 10 +++++-----
    > drivers/scsi/sym53c416.c | 3 ++-
    > drivers/scsi/u14-34f.c | 12 +++++++-----
    > drivers/serial/8250.c | 4 ++--
    > include/linux/uio_driver.h | 3 ++-
    > sound/drivers/mts64.c | 2 ++
    > sound/drivers/portman2x4.c | 2 ++
    > 54 files changed, 190 insertions(+), 181 deletions(-)

    >
    > 654f4a242cac0148ffe98ce288c9116e65b08e44
    > diff --git a/drivers/atm/ambassador.c b/drivers/atm/ambassador.c
    > index c2b9464..8f6a8a2 100644
    > --- a/drivers/atm/ambassador.c
    > +++ b/drivers/atm/ambassador.c
    > @@ -862,9 +862,10 @@ static inline void interrupts_off (amb_dev * dev) {
    >
    > /********** interrupt handling **********/
    >
    > -static irqreturn_t interrupt_handler(int irq, void *dev_id) {
    > +static irqreturn_t interrupt_handler(void *dev_id)
    > +{
    > amb_dev * dev = dev_id;
    > -
    > +
    > PRINTD (DBG_IRQ|DBG_FLOW, "interrupt_handler: %p", dev_id);
    >
    > {

    White space cleanup.

    > diff --git a/drivers/bluetooth/btuart_cs.c b/drivers/bluetooth/btuart_cs.c
    > index 08f48d5..1fdf756 100644
    > --- a/drivers/bluetooth/btuart_cs.c
    > +++ b/drivers/bluetooth/btuart_cs.c
    > @@ -287,7 +287,7 @@ static void btuart_receive(btuart_info_t *info)
    > }
    >
    >
    > -static irqreturn_t btuart_interrupt(int irq, void *dev_inst)
    > +static irqreturn_t btuart_interrupt(void *dev_inst)
    > {
    > btuart_info_t *info = dev_inst;
    > unsigned int iobase;

    Trivial

    > diff --git a/drivers/bluetooth/dtl1_cs.c b/drivers/bluetooth/dtl1_cs.c
    > index dae45cd..3f9d5b9 100644
    > --- a/drivers/bluetooth/dtl1_cs.c
    > +++ b/drivers/bluetooth/dtl1_cs.c
    > @@ -290,7 +290,7 @@ static void dtl1_receive(dtl1_info_t *info)
    > }
    >
    >
    > -static irqreturn_t dtl1_interrupt(int irq, void *dev_inst)
    > +static irqreturn_t dtl1_interrupt(void *dev_inst)
    > {
    > dtl1_info_t *info = dev_inst;
    > unsigned int iobase;

    Trivial

    > diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
    > index d15234c..7e8fe35 100644
    > --- a/drivers/char/cyclades.c
    > +++ b/drivers/char/cyclades.c
    > @@ -1312,7 +1312,7 @@ end:
    > whenever the card wants its hand held--chars
    > received, out buffer empty, modem change, etc.
    > */
    > -static irqreturn_t cyy_interrupt(int irq, void *dev_id)
    > +static irqreturn_t cyy_interrupt(void *dev_id)
    > {
    > int status;
    > struct cyclades_card *cinfo = dev_id;
    > @@ -1320,13 +1320,6 @@ static irqreturn_t cyy_interrupt(int irq, void *dev_id)
    > unsigned int chip, too_many, had_work;
    > int index;
    >
    > - if (unlikely(cinfo == NULL)) {
    > -#ifdef CY_DEBUG_INTERRUPTS
    > - printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n",irq);
    > -#endif
    > - return IRQ_NONE; /* spurious interrupt */
    > - }
    > -
    > card_base_addr = cinfo->base_addr;
    > index = cinfo->bus_index;
    >
    > @@ -1728,21 +1721,13 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo)
    > }
    >
    > #ifdef CONFIG_CYZ_INTR
    > -static irqreturn_t cyz_interrupt(int irq, void *dev_id)
    > +static irqreturn_t cyz_interrupt(void *dev_id)
    > {
    > struct cyclades_card *cinfo = dev_id;
    >
    > - if (unlikely(cinfo == NULL)) {
    > -#ifdef CY_DEBUG_INTERRUPTS
    > - printk(KERN_DEBUG "cyz_interrupt: spurious interrupt %d\n",irq);
    > -#endif
    > - return IRQ_NONE; /* spurious interrupt */
    > - }
    > -
    > if (unlikely(!ISZLOADED(*cinfo))) {
    > #ifdef CY_DEBUG_INTERRUPTS
    > - printk(KERN_DEBUG "cyz_interrupt: board not yet loaded "
    > - "(IRQ%d).\n", irq);
    > + printk(KERN_DEBUG "cyz_interrupt: board not yet loaded\n");
    > #endif
    > return IRQ_NONE;
    > }


    Removal of impossible case? aka cleanup.

    > diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c
    > index 2124dce..1d4c528 100644
    > --- a/drivers/char/ip2/ip2main.c
    > +++ b/drivers/char/ip2/ip2main.c
    > @@ -190,7 +190,7 @@ static int ip2_tiocmset(struct tty_struct *tty, struct file
    > *file,
    >
    > static void set_irq(int, int);
    > static void ip2_interrupt_bh(struct work_struct *work);
    > -static irqreturn_t ip2_interrupt(int irq, void *dev_id);
    > +static irqreturn_t ip2_interrupt(void *dev_id);
    > static void ip2_poll(unsigned long arg);
    > static inline void service_all_boards(void);
    > static void do_input(struct work_struct *);
    > @@ -1149,7 +1149,7 @@ ip2_interrupt_bh(struct work_struct *work)
    >
    >
    > /******************************************************************************/
    > -/* Function: ip2_interrupt(int irq, void *dev_id) */
    > +/* Function: ip2_interrupt(void *dev_id) */
    > /* Parameters: irq - interrupt number */
    > /* pointer to optional device ID structure */
    > /* Returns: Nothing */
    > @@ -1167,7 +1167,7 @@ ip2_interrupt_bh(struct work_struct *work)
    > /* */
    > /******************************************************************************/
    > static irqreturn_t
    > -ip2_interrupt(int irq, void *dev_id)
    > +ip2_interrupt(void *dev_id)
    > {
    > int i;
    > i2eBordStrPtr pB;
    > @@ -1182,7 +1182,7 @@ ip2_interrupt(int irq, void *dev_id)
    > // Only process those boards which match our IRQ.
    > // IRQ = 0 for polled boards, we won't poll "IRQ" boards
    >
    > - if ( pB && (pB->i2eUsingIrq == irq) ) {
    > + if ( pB && (pB->i2eUsingIrq == get_irqfunc_irq()) ) {
    > handled = 1;
    > #ifdef USE_IQI
    >
    > @@ -1231,7 +1231,7 @@ 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_interrupt(NULL);

    Ouch! What will get_irqfunc return here?

    > PollTimer.expires = POLL_TIMEOUT;
    > add_timer( &PollTimer );
    > diff --git a/drivers/char/mwave/tp3780i.c b/drivers/char/mwave/tp3780i.c
    > index f282976..ff57eb1 100644
    > --- a/drivers/char/mwave/tp3780i.c
    > +++ b/drivers/char/mwave/tp3780i.c
    > @@ -95,14 +95,15 @@ static void EnableSRAM(THINKPAD_BD_DATA * pBDData)
    > }
    >
    >
    > -static irqreturn_t UartInterrupt(int irq, void *dev_id)
    > +static irqreturn_t UartInterrupt(void *dev_id)
    > {
    > PRINTK_3(TRACE_TP3780I,
    > - "tp3780i::UartInterrupt entry irq %x dev_id %p\n", irq, dev_id);
    > + "tp3780i::UartInterrupt entry irq %x dev_id %p\n",
    > + get_irqfunc_irq(), dev_id);
    > return IRQ_HANDLED;
    > }
    >
    > -static irqreturn_t DspInterrupt(int irq, void *dev_id)
    > +static irqreturn_t DspInterrupt(void *dev_id)
    > {
    > pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
    > DSP_3780I_CONFIG_SETTINGS *pSettings = &pDrvData->rBDData.rDspSettings;
    > @@ -110,7 +111,8 @@ static irqreturn_t DspInterrupt(int irq, void *dev_id)
    > unsigned short usIPCSource = 0, usIsolationMask, usPCNum;
    >
    > PRINTK_3(TRACE_TP3780I,
    > - "tp3780i::DspInterrupt entry irq %x dev_id %p\n", irq, dev_id);
    > + "tp3780i::DspInterrupt entry irq %x dev_id %p\n",
    > + get_irqfunc_irq(), dev_id);
    >
    > if (dsp3780I_GetIPCSource(usDspBaseIO, &usIPCSource) == 0) {
    > PRINTK_2(TRACE_TP3780I,

    Needed but just printk seems to be the only user.

    > diff --git a/drivers/char/pcmcia/synclink_cs.c
    > b/drivers/char/pcmcia/synclink_cs.c
    > index 2b88931..922cf60 100644
    > --- a/drivers/char/pcmcia/synclink_cs.c
    > +++ b/drivers/char/pcmcia/synclink_cs.c
    > @@ -417,7 +417,7 @@ static void rx_reset_buffers(MGSLPC_INFO *info);
    > static int rx_alloc_buffers(MGSLPC_INFO *info);
    > static void rx_free_buffers(MGSLPC_INFO *info);
    >
    > -static irqreturn_t mgslpc_isr(int irq, void *dev_id);
    > +static irqreturn_t mgslpc_isr(void *dev_id);
    >
    > /*
    > * Bottom half interrupt handlers
    > @@ -1226,7 +1226,7 @@ static void ri_change(MGSLPC_INFO *info)
    > * irq interrupt number that caused interrupt
    > * dev_id device ID supplied during interrupt registration
    > */
    > -static irqreturn_t mgslpc_isr(int irq, void *dev_id)
    > +static irqreturn_t mgslpc_isr(void *dev_id)
    > {
    > MGSLPC_INFO * info = (MGSLPC_INFO *)dev_id;
    > unsigned short isr;
    > @@ -1234,7 +1234,7 @@ static irqreturn_t mgslpc_isr(int irq, void *dev_id)
    > int count=0;
    >
    > if (debug_level >= DEBUG_LEVEL_ISR)
    > - printk("mgslpc_isr(%d) entry.\n", irq);
    > + printk("mgslpc_isr(%d) entry.\n", get_irqfunc_irq());
    > if (!info)
    > return IRQ_NONE;
    >
    > @@ -1328,7 +1328,7 @@ static irqreturn_t mgslpc_isr(int irq, void *dev_id)
    >
    > if (debug_level >= DEBUG_LEVEL_ISR)
    > printk("%s(%d):mgslpc_isr(%d)exit.\n",
    > - __FILE__,__LINE__,irq);
    > + __FILE__, __LINE__, get_irqfunc_irq());
    >
    > return IRQ_HANDLED;
    > }

    Ok. Just fixing printk again.

    > diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
    > index 0ce9667..616a1cf 100644
    > --- a/drivers/char/rio/rio_linux.c
    > +++ b/drivers/char/rio/rio_linux.c
    > @@ -363,13 +363,14 @@ static void rio_reset_interrupt(struct Host *HostP)
    > }
    >
    >
    > -static irqreturn_t rio_interrupt(int irq, void *ptr)
    > +static irqreturn_t rio_interrupt(void *ptr)
    > {
    > struct Host *HostP;
    > func_enter();
    >
    > - HostP = ptr; /* &p->RIOHosts[(long)ptr]; */
    > - rio_dprintk(RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n", irq,
    > HostP->Ivec);
    > + HostP = ptr; /* &p->RIOHosts[(long)ptr]; */
    > + rio_dprintk(RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n",
    > + get_irqfunc_irq(), HostP->Ivec);
    >
    > /* AAargh! The order in which to do these things is essential and
    > not trivial.
    > @@ -389,7 +390,7 @@ static irqreturn_t rio_interrupt(int irq, void *ptr)
    > */
    >
    > rio_dprintk(RIO_DEBUG_IFLOW, "rio: We've have noticed the interrupt\n");
    > - if (HostP->Ivec == irq) {
    > + if (HostP->Ivec == get_irqfunc_irq()) {
    > /* Tell the card we've noticed the interrupt. */
    > rio_reset_interrupt(HostP);
    > }

    Ok. This is to detect to see if we are being called from the poll
    function, ouch.


    > @@ -407,7 +408,8 @@ static irqreturn_t rio_interrupt(int irq, void *ptr)
    > rio_dprintk(RIO_DEBUG_IFLOW, "riointr() doing host %p type %d\n", ptr,
    > HostP->Type);
    >
    > clear_bit(RIO_BOARD_INTR_LOCK, &HostP->locks);
    > - rio_dprintk(RIO_DEBUG_IFLOW, "rio: exit rio_interrupt (%d/%d)\n", irq,
    > HostP->Ivec);
    > + rio_dprintk(RIO_DEBUG_IFLOW, "rio: exit rio_interrupt (%d/%d)\n",
    > + get_irqfunc_irq(), HostP->Ivec);
    > func_exit();
    > return IRQ_HANDLED;
    > }
    > @@ -417,7 +419,7 @@ static void rio_pollfunc(unsigned long data)
    > {
    > func_enter();
    >
    > - rio_interrupt(0, &p->RIOHosts[data]);
    > + rio_interrupt(&p->RIOHosts[data]);
    Bug because now we don't know if we are being called from the poll
    function.
    > mod_timer(&p->RIOHosts[data].timer, jiffies + rio_poll);
    >
    > func_exit();
    > diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
    > index b37e626..1c0741a 100644
    > --- a/drivers/char/riscom8.c
    > +++ b/drivers/char/riscom8.c
    > @@ -537,7 +537,7 @@ 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(void * dev_id)
    > {
    > unsigned char status;
    > unsigned char ack;
    > @@ -545,7 +545,7 @@ static irqreturn_t rc_interrupt(int irq, void * dev_id)
    > unsigned long loop = 0;
    > int handled = 0;
    >
    > - bp = IRQ_to_board[irq];
    > + bp = IRQ_to_board[get_irqfunc_irq()];
    >
    > if (!(bp->flags & RC_BOARD_ACTIVE))
    > return IRQ_NONE;

    Reasonable. Grumble we should just pass bp to request_irq.

    > diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
    > index 4558556..bad86e0 100644
    > --- a/drivers/char/specialix.c
    > +++ b/drivers/char/specialix.c
    > @@ -195,7 +195,7 @@ static struct specialix_port sx_port[SX_NBOARD * SX_NPORT];
    >
    > #ifdef SPECIALIX_TIMER
    > static struct timer_list missed_irq_timer;
    > -static irqreturn_t sx_interrupt(int irq, void * dev_id);
    > +static irqreturn_t sx_interrupt(void * dev_id);
    > #endif
    >
    >
    > @@ -876,7 +876,7 @@ static inline void sx_check_modem(struct specialix_board *
    > bp)
    >
    >
    > /* The main interrupt processing routine */
    > -static irqreturn_t sx_interrupt(int irq, void *dev_id)
    > +static irqreturn_t sx_interrupt(void *dev_id)
    > {
    > unsigned char status;
    > unsigned char ack;
    > @@ -892,7 +892,8 @@ static irqreturn_t sx_interrupt(int irq, void *dev_id)
    >
    > 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->flags & SX_BOARD_ACTIVE)) {
    > - dprintk (SX_DEBUG_IRQ, "sx: False interrupt. irq %d.\n", irq);
    > + dprintk (SX_DEBUG_IRQ, "sx: False interrupt. irq %d.\n",
    > + get_irqfunc_irq());
    > spin_unlock_irqrestore(&bp->lock, flags);
    > func_exit();
    > return IRQ_NONE;

    Ok...

    > diff --git a/drivers/char/sx.c b/drivers/char/sx.c
    > index 85a2328..ff7fac3 100644
    > --- a/drivers/char/sx.c
    > +++ b/drivers/char/sx.c
    > @@ -1241,15 +1241,15 @@ static inline void sx_check_modem_signals(struct sx_port
    > *port)
    > * Small, elegant, clear.
    > */
    >
    > -static irqreturn_t sx_interrupt(int irq, void *ptr)
    > +static irqreturn_t sx_interrupt(void *ptr)
    > {
    > struct sx_board *board = ptr;
    > struct sx_port *port;
    > int i;
    >
    > func_enter();
    > - sx_dprintk(SX_DEBUG_FLOW, "sx: enter sx_interrupt (%d/%d)\n", irq,
    > - board->irq);
    > + sx_dprintk(SX_DEBUG_FLOW, "sx: enter sx_interrupt (%d/%d)\n",
    > + get_irqfunc_irq(), board->irq);
    >
    > /* AAargh! The order in which to do these things is essential and
    > not trivial.
    > @@ -1293,7 +1293,7 @@ static irqreturn_t sx_interrupt(int irq, void *ptr)
    > }
    > #endif
    >
    > - if (board->irq == irq) {
    > + if (board->irq == get_irqfunc_irq()) {
    > /* Tell the card we've noticed the interrupt. */
    >
    > sx_write_board_word(board, cc_int_pending, 0);
    > @@ -1339,8 +1339,8 @@ static irqreturn_t sx_interrupt(int irq, void *ptr)
    >
    > clear_bit(SX_BOARD_INTR_LOCK, &board->locks);
    >
    > - sx_dprintk(SX_DEBUG_FLOW, "sx: exit sx_interrupt (%d/%d)\n", irq,
    > - board->irq);
    > + sx_dprintk(SX_DEBUG_FLOW, "sx: exit sx_interrupt (%d/%d)\n",
    > + get_irqfunc_irq(), board->irq);
    > func_exit();
    > return IRQ_HANDLED;
    > }
    > @@ -1351,7 +1351,7 @@ static void sx_pollfunc(unsigned long data)
    >
    > func_enter();
    >
    > - sx_interrupt(0, board);
    > + sx_interrupt(board);
    Bug because we can't detect if we are being called from the poll
    function after this change.
    >
    > mod_timer(&board->timer, jiffies + sx_poll);
    > func_exit();

    [snip] Found issues and ran out of review bandwidth.

    > diff --git a/sound/drivers/mts64.c b/sound/drivers/mts64.c
    > index dcc90f9..4990b35 100644
    > --- a/sound/drivers/mts64.c
    > +++ b/sound/drivers/mts64.c
    > @@ -853,6 +853,8 @@ static void snd_mts64_interrupt(void *private)
    > }
    > __out:
    > spin_unlock(&mts->lock);
    > +
    > + return IRQ_HANDLED;

    Missing parport code change, see below.
    > }
    >
    > static int __devinit snd_mts64_probe_port(struct parport *p)
    > diff --git a/sound/drivers/portman2x4.c b/sound/drivers/portman2x4.c
    > index e065b2a..7e4ac0b 100644
    > --- a/sound/drivers/portman2x4.c
    > +++ b/sound/drivers/portman2x4.c
    > @@ -645,6 +645,8 @@ static void snd_portman_interrupt(void *userdata)
    > }
    >
    > spin_unlock(&pm->reg_lock);
    > +
    > + return IRQ_HANDLED;

    Hmm. The corresponding change to prototype is missing and
    the change to the parport code is missing.

    Eric
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