[PATCH 02/27] m68k/irq: Rename irq_controller to irq_chip

From: Geert Uytterhoeven
Date: Sun Oct 30 2011 - 08:51:56 EST

Make it more similar to the genirq version:
- Remove lock (unused as we don't do SMP anyway),
- Prepend methods with irq_,
- Make irq_startup() return unsigned int.

Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Acked-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/m68k/amiga/amiints.c | 9 ++--
arch/m68k/amiga/cia.c | 18 ++++-----
arch/m68k/apollo/dn_ints.c | 11 ++---
arch/m68k/atari/ataints.c | 15 +++----
arch/m68k/include/asm/irq.h | 15 +++----
arch/m68k/kernel/ints.c | 86 +++++++++++++++++++++----------------------
arch/m68k/mac/macints.c | 9 ++--
arch/m68k/q40/q40ints.c | 17 ++++----
arch/m68k/sun3/sun3ints.c | 13 +++---
9 files changed, 91 insertions(+), 102 deletions(-)

diff --git a/arch/m68k/amiga/amiints.c b/arch/m68k/amiga/amiints.c
index c5b5212..320c5d0 100644
--- a/arch/m68k/amiga/amiints.c
+++ b/arch/m68k/amiga/amiints.c
@@ -52,11 +52,10 @@ static irqreturn_t ami_int3(int irq, void *dev_id);
static irqreturn_t ami_int4(int irq, void *dev_id);
static irqreturn_t ami_int5(int irq, void *dev_id);

-static struct irq_controller amiga_irq_controller = {
+static struct irq_chip amiga_irq_chip = {
.name = "amiga",
- .lock = __SPIN_LOCK_UNLOCKED(amiga_irq_controller.lock),
- .enable = amiga_enable_irq,
- .disable = amiga_disable_irq,
+ .irq_enable = amiga_enable_irq,
+ .irq_disable = amiga_disable_irq,
};

/*
@@ -81,7 +80,7 @@ void __init amiga_init_IRQ(void)
if (request_irq(IRQ_AUTO_5, ami_int5, 0, "int5", NULL))
pr_err("Couldn't register int%d\n", 5);

- m68k_setup_irq_controller(&amiga_irq_controller, IRQ_USER, AMI_STD_IRQS);
+ m68k_setup_irq_chip(&amiga_irq_chip, IRQ_USER, AMI_STD_IRQS);

/* turn off PCMCIA interrupts */
if (AMIGAHW_PRESENT(PCMCIA))
diff --git a/arch/m68k/amiga/cia.c b/arch/m68k/amiga/cia.c
index ecd0f7c..637ef53 100644
--- a/arch/m68k/amiga/cia.c
+++ b/arch/m68k/amiga/cia.c
@@ -121,11 +121,10 @@ static void cia_disable_irq(unsigned int irq)
cia_able_irq(&ciaa_base, 1 << (irq - IRQ_AMIGA_CIAA));
}

-static struct irq_controller cia_irq_controller = {
+static struct irq_chip cia_irq_chip = {
.name = "cia",
- .lock = __SPIN_LOCK_UNLOCKED(cia_irq_controller.lock),
- .enable = cia_enable_irq,
- .disable = cia_disable_irq,
+ .irq_enable = cia_enable_irq,
+ .irq_disable = cia_disable_irq,
};

/*
@@ -158,23 +157,22 @@ static void auto_disable_irq(unsigned int irq)
}
}

-static struct irq_controller auto_irq_controller = {
+static struct irq_chip auto_irq_chip = {
.name = "auto",
- .lock = __SPIN_LOCK_UNLOCKED(auto_irq_controller.lock),
- .enable = auto_enable_irq,
- .disable = auto_disable_irq,
+ .irq_enable = auto_enable_irq,
+ .irq_disable = auto_disable_irq,
};

void __init cia_init_IRQ(struct ciabase *base)
{
- m68k_setup_irq_controller(&cia_irq_controller, base->cia_irq, CIA_IRQS);
+ m68k_setup_irq_chip(&cia_irq_chip, base->cia_irq, CIA_IRQS);

/* clear any pending interrupt and turn off all interrupts */
cia_set_irq(base, CIA_ICR_ALL);
cia_able_irq(base, CIA_ICR_ALL);

/* override auto int and install CIA handler */
- m68k_setup_irq_controller(&auto_irq_controller, base->handler_irq, 1);
+ m68k_setup_irq_chip(&auto_irq_chip, base->handler_irq, 1);
m68k_irq_startup(base->handler_irq);
if (request_irq(base->handler_irq, cia_handler, IRQF_SHARED,
base->name, base))
diff --git a/arch/m68k/apollo/dn_ints.c b/arch/m68k/apollo/dn_ints.c
index 5d47f3a..d6e8f33 100644
--- a/arch/m68k/apollo/dn_ints.c
+++ b/arch/m68k/apollo/dn_ints.c
@@ -12,7 +12,7 @@ void dn_process_int(unsigned int irq, struct pt_regs *fp)
*(volatile unsigned char *)(picb)=0x20;
}

-int apollo_irq_startup(unsigned int irq)
+unsigned int apollo_irq_startup(unsigned int irq)
{
if (irq < 8)
*(volatile unsigned char *)(pica+1) &= ~(1 << irq);
@@ -29,16 +29,15 @@ void apollo_irq_shutdown(unsigned int irq)
*(volatile unsigned char *)(picb+1) |= (1 << (irq - 8));
}

-static struct irq_controller apollo_irq_controller = {
+static struct irq_chip apollo_irq_chip = {
.name = "apollo",
- .lock = __SPIN_LOCK_UNLOCKED(apollo_irq_controller.lock),
- .startup = apollo_irq_startup,
- .shutdown = apollo_irq_shutdown,
+ .irq_startup = apollo_irq_startup,
+ .irq_shutdown = apollo_irq_shutdown,
};


void __init dn_init_IRQ(void)
{
m68k_setup_user_interrupt(VEC_USER + 96, 16, dn_process_int);
- m68k_setup_irq_controller(&apollo_irq_controller, IRQ_APOLLO, 16);
+ m68k_setup_irq_chip(&apollo_irq_chip, IRQ_APOLLO, 16);
}
diff --git a/arch/m68k/atari/ataints.c b/arch/m68k/atari/ataints.c
index 26a804e..ac0ebdf 100644
--- a/arch/m68k/atari/ataints.c
+++ b/arch/m68k/atari/ataints.c
@@ -320,7 +320,7 @@ extern void atari_microwire_cmd(int cmd);

extern int atari_SCC_reset_done;

-static int atari_startup_irq(unsigned int irq)
+static unsigned int atari_startup_irq(unsigned int irq)
{
m68k_irq_startup(irq);
atari_turnon_irq(irq);
@@ -338,13 +338,12 @@ static void atari_shutdown_irq(unsigned int irq)
vectors[VEC_INT4] = falcon_hblhandler;
}

-static struct irq_controller atari_irq_controller = {
+static struct irq_chip atari_irq_chip = {
.name = "atari",
- .lock = __SPIN_LOCK_UNLOCKED(atari_irq_controller.lock),
- .startup = atari_startup_irq,
- .shutdown = atari_shutdown_irq,
- .enable = atari_enable_irq,
- .disable = atari_disable_irq,
+ .irq_startup = atari_startup_irq,
+ .irq_shutdown = atari_shutdown_irq,
+ .irq_enable = atari_enable_irq,
+ .irq_disable = atari_disable_irq,
};

/*
@@ -361,7 +360,7 @@ static struct irq_controller atari_irq_controller = {
void __init atari_init_IRQ(void)
{
m68k_setup_user_interrupt(VEC_USER, NUM_ATARI_SOURCES - IRQ_USER, NULL);
- m68k_setup_irq_controller(&atari_irq_controller, 1, NUM_ATARI_SOURCES - 1);
+ m68k_setup_irq_chip(&atari_irq_chip, 1, NUM_ATARI_SOURCES - 1);

/* Initialize the MFP(s) */

diff --git a/arch/m68k/include/asm/irq.h b/arch/m68k/include/asm/irq.h
index 69ed0d7..d8c6f68 100644
--- a/arch/m68k/include/asm/irq.h
+++ b/arch/m68k/include/asm/irq.h
@@ -93,16 +93,15 @@ struct irq_handler {
const char *devname;
};

-struct irq_controller {
+struct irq_chip {
const char *name;
- spinlock_t lock;
- int (*startup)(unsigned int irq);
- void (*shutdown)(unsigned int irq);
- void (*enable)(unsigned int irq);
- void (*disable)(unsigned int irq);
+ unsigned int (*irq_startup)(unsigned int irq);
+ void (*irq_shutdown)(unsigned int irq);
+ void (*irq_enable)(unsigned int irq);
+ void (*irq_disable)(unsigned int irq);
};

-extern int m68k_irq_startup(unsigned int);
+extern unsigned int m68k_irq_startup(unsigned int);
extern void m68k_irq_shutdown(unsigned int);

/*
@@ -113,7 +112,7 @@ extern irq_node_t *new_irq_node(void);
extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int, struct pt_regs *));
extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
void (*handler)(unsigned int, struct pt_regs *));
-extern void m68k_setup_irq_controller(struct irq_controller *, unsigned int, unsigned int);
+extern void m68k_setup_irq_chip(struct irq_chip *, unsigned int, unsigned int);

asmlinkage void m68k_handle_int(unsigned int);
asmlinkage void __m68k_handle_int(unsigned int, struct pt_regs *);
diff --git a/arch/m68k/kernel/ints.c b/arch/m68k/kernel/ints.c
index 761ee04..f43ad7b 100644
--- a/arch/m68k/kernel/ints.c
+++ b/arch/m68k/kernel/ints.c
@@ -52,23 +52,21 @@ extern u16 user_irqvec_fixup[];

/* table for system interrupt handlers */
static struct irq_node *irq_list[NR_IRQS];
-static struct irq_controller *irq_controller[NR_IRQS];
+static struct irq_chip *irq_chip[NR_IRQS];
static int irq_depth[NR_IRQS];

static int m68k_first_user_vec;

-static struct irq_controller auto_irq_controller = {
+static struct irq_chip auto_irq_chip = {
.name = "auto",
- .lock = __SPIN_LOCK_UNLOCKED(auto_irq_controller.lock),
- .startup = m68k_irq_startup,
- .shutdown = m68k_irq_shutdown,
+ .irq_startup = m68k_irq_startup,
+ .irq_shutdown = m68k_irq_shutdown,
};

-static struct irq_controller user_irq_controller = {
+static struct irq_chip user_irq_chip = {
.name = "user",
- .lock = __SPIN_LOCK_UNLOCKED(user_irq_controller.lock),
- .startup = m68k_irq_startup,
- .shutdown = m68k_irq_shutdown,
+ .irq_startup = m68k_irq_startup,
+ .irq_shutdown = m68k_irq_shutdown,
};

#define NUM_IRQ_NODES 100
@@ -96,7 +94,7 @@ void __init init_IRQ(void)
}

for (i = IRQ_AUTO_1; i <= IRQ_AUTO_7; i++)
- irq_controller[i] = &auto_irq_controller;
+ irq_chip[i] = &auto_irq_chip;

mach_init_IRQ();
}
@@ -136,7 +134,7 @@ void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
BUG_ON(IRQ_USER + cnt > NR_IRQS);
m68k_first_user_vec = vec;
for (i = 0; i < cnt; i++)
- irq_controller[IRQ_USER + i] = &user_irq_controller;
+ irq_chip[IRQ_USER + i] = &user_irq_chip;
*user_irqvec_fixup = vec - IRQ_USER;
if (handler)
*user_irqhandler_fixup = (u32)handler;
@@ -144,7 +142,7 @@ void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
}

/**
- * m68k_setup_irq_controller
+ * m68k_setup_irq_chip
* @contr: irq controller which controls specified irq
* @irq: first irq to be managed by the controller
*
@@ -153,13 +151,13 @@ void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
* be changed as well, but the controller probably should use m68k_irq_startup/
* m68k_irq_shutdown.
*/
-void m68k_setup_irq_controller(struct irq_controller *contr, unsigned int irq,
+void m68k_setup_irq_chip(struct irq_chip *contr, unsigned int irq,
unsigned int cnt)
{
int i;

for (i = 0; i < cnt; i++)
- irq_controller[irq + i] = contr;
+ irq_chip[irq + i] = contr;
}

irq_node_t *new_irq_node(void)
@@ -180,23 +178,23 @@ irq_node_t *new_irq_node(void)

int setup_irq(unsigned int irq, struct irq_node *node)
{
- struct irq_controller *contr;
+ struct irq_chip *contr;
struct irq_node **prev;
unsigned long flags;

- if (irq >= NR_IRQS || !(contr = irq_controller[irq])) {
+ if (irq >= NR_IRQS || !(contr = irq_chip[irq])) {
printk("%s: Incorrect IRQ %d from %s\n",
__func__, irq, node->devname);
return -ENXIO;
}

- spin_lock_irqsave(&contr->lock, flags);
+ local_irq_save(flags);

prev = irq_list + irq;
if (*prev) {
/* Can't share interrupts unless both agree to */
if (!((*prev)->flags & node->flags & IRQF_SHARED)) {
- spin_unlock_irqrestore(&contr->lock, flags);
+ local_irq_restore(flags);
return -EBUSY;
}
while (*prev)
@@ -204,15 +202,15 @@ int setup_irq(unsigned int irq, struct irq_node *node)
}

if (!irq_list[irq]) {
- if (contr->startup)
- contr->startup(irq);
+ if (contr->irq_startup)
+ contr->irq_startup(irq);
else
- contr->enable(irq);
+ contr->irq_enable(irq);
}
node->next = NULL;
*prev = node;

- spin_unlock_irqrestore(&contr->lock, flags);
+ local_irq_restore(flags);

return 0;
}
@@ -244,16 +242,16 @@ EXPORT_SYMBOL(request_irq);

void free_irq(unsigned int irq, void *dev_id)
{
- struct irq_controller *contr;
+ struct irq_chip *contr;
struct irq_node **p, *node;
unsigned long flags;

- if (irq >= NR_IRQS || !(contr = irq_controller[irq])) {
+ if (irq >= NR_IRQS || !(contr = irq_chip[irq])) {
printk("%s: Incorrect IRQ %d\n", __func__, irq);
return;
}

- spin_lock_irqsave(&contr->lock, flags);
+ local_irq_save(flags);

p = irq_list + irq;
while ((node = *p)) {
@@ -270,58 +268,58 @@ void free_irq(unsigned int irq, void *dev_id)
__func__, irq);

if (!irq_list[irq]) {
- if (contr->shutdown)
- contr->shutdown(irq);
+ if (contr->irq_shutdown)
+ contr->irq_shutdown(irq);
else
- contr->disable(irq);
+ contr->irq_disable(irq);
}

- spin_unlock_irqrestore(&contr->lock, flags);
+ local_irq_restore(flags);
}

EXPORT_SYMBOL(free_irq);

void enable_irq(unsigned int irq)
{
- struct irq_controller *contr;
+ struct irq_chip *contr;
unsigned long flags;

- if (irq >= NR_IRQS || !(contr = irq_controller[irq])) {
+ if (irq >= NR_IRQS || !(contr = irq_chip[irq])) {
printk("%s: Incorrect IRQ %d\n",
__func__, irq);
return;
}

- spin_lock_irqsave(&contr->lock, flags);
+ local_irq_save(flags);
if (irq_depth[irq]) {
if (!--irq_depth[irq]) {
- if (contr->enable)
- contr->enable(irq);
+ if (contr->irq_enable)
+ contr->irq_enable(irq);
}
} else
WARN_ON(1);
- spin_unlock_irqrestore(&contr->lock, flags);
+ local_irq_restore(flags);
}

EXPORT_SYMBOL(enable_irq);

void disable_irq(unsigned int irq)
{
- struct irq_controller *contr;
+ struct irq_chip *contr;
unsigned long flags;

- if (irq >= NR_IRQS || !(contr = irq_controller[irq])) {
+ if (irq >= NR_IRQS || !(contr = irq_chip[irq])) {
printk("%s: Incorrect IRQ %d\n",
__func__, irq);
return;
}

- spin_lock_irqsave(&contr->lock, flags);
+ local_irq_save(flags);
if (!irq_depth[irq]++) {
- if (contr->disable)
- contr->disable(irq);
+ if (contr->irq_disable)
+ contr->irq_disable(irq);
}
- spin_unlock_irqrestore(&contr->lock, flags);
+ local_irq_restore(flags);
}

EXPORT_SYMBOL(disable_irq);
@@ -330,7 +328,7 @@ void disable_irq_nosync(unsigned int irq) __attribute__((alias("disable_irq")));

EXPORT_SYMBOL(disable_irq_nosync);

-int m68k_irq_startup(unsigned int irq)
+unsigned int m68k_irq_startup(unsigned int irq)
{
if (irq <= IRQ_AUTO_7)
vectors[VEC_SPUR + irq] = auto_inthandler;
@@ -413,13 +411,13 @@ asmlinkage void handle_badint(struct pt_regs *regs)

int show_interrupts(struct seq_file *p, void *v)
{
- struct irq_controller *contr;
+ struct irq_chip *contr;
struct irq_node *node;
int i = *(loff_t *) v;

/* autovector interrupts */
if (irq_list[i]) {
- contr = irq_controller[i];
+ contr = irq_chip[i];
node = irq_list[i];
seq_printf(p, "%-8s %3u: %10u %s", contr->name, i, kstat_cpu(0).irqs[i], node->devname);
while ((node = node->next))
diff --git a/arch/m68k/mac/macints.c b/arch/m68k/mac/macints.c
index f92190c..ffa1b3f 100644
--- a/arch/m68k/mac/macints.c
+++ b/arch/m68k/mac/macints.c
@@ -193,11 +193,10 @@ irqreturn_t mac_debug_handler(int, void *);
void mac_enable_irq(unsigned int irq);
void mac_disable_irq(unsigned int irq);

-static struct irq_controller mac_irq_controller = {
+static struct irq_chip mac_irq_chip = {
.name = "mac",
- .lock = __SPIN_LOCK_UNLOCKED(mac_irq_controller.lock),
- .enable = mac_enable_irq,
- .disable = mac_disable_irq,
+ .irq_enable = mac_enable_irq,
+ .irq_disable = mac_disable_irq,
};

void __init mac_init_IRQ(void)
@@ -205,7 +204,7 @@ void __init mac_init_IRQ(void)
#ifdef DEBUG_MACINTS
printk("mac_init_IRQ(): Setting things up...\n");
#endif
- m68k_setup_irq_controller(&mac_irq_controller, IRQ_USER,
+ m68k_setup_irq_chip(&mac_irq_chip, IRQ_USER,
NUM_MAC_SOURCES - IRQ_USER);
/* Make sure the SONIC interrupt is cleared or things get ugly */
#ifdef SHUTUP_SONIC
diff --git a/arch/m68k/q40/q40ints.c b/arch/m68k/q40/q40ints.c
index 9f0e3d5..fa05a03 100644
--- a/arch/m68k/q40/q40ints.c
+++ b/arch/m68k/q40/q40ints.c
@@ -41,14 +41,14 @@ static void q40_disable_irq(unsigned int);
unsigned short q40_ablecount[35];
unsigned short q40_state[35];

-static int q40_irq_startup(unsigned int irq)
+static unsigned int q40_irq_startup(unsigned int irq)
{
/* test for ISA ints not implemented by HW */
switch (irq) {
case 1: case 2: case 8: case 9:
case 11: case 12: case 13:
printk("%s: ISA IRQ %d not implemented by HW\n", __func__, irq);
- return -ENXIO;
+ /* FIXME return -ENXIO; */
}
return 0;
}
@@ -57,13 +57,12 @@ static void q40_irq_shutdown(unsigned int irq)
{
}

-static struct irq_controller q40_irq_controller = {
+static struct irq_chip q40_irq_chip = {
.name = "q40",
- .lock = __SPIN_LOCK_UNLOCKED(q40_irq_controller.lock),
- .startup = q40_irq_startup,
- .shutdown = q40_irq_shutdown,
- .enable = q40_enable_irq,
- .disable = q40_disable_irq,
+ .irq_startup = q40_irq_startup,
+ .irq_shutdown = q40_irq_shutdown,
+ .irq_enable = q40_enable_irq,
+ .irq_disable = q40_disable_irq,
};

/*
@@ -81,7 +80,7 @@ static int disabled;

void __init q40_init_IRQ(void)
{
- m68k_setup_irq_controller(&q40_irq_controller, 1, Q40_IRQ_MAX);
+ m68k_setup_irq_chip(&q40_irq_chip, 1, Q40_IRQ_MAX);

/* setup handler for ISA ints */
m68k_setup_auto_interrupt(q40_irq_handler);
diff --git a/arch/m68k/sun3/sun3ints.c b/arch/m68k/sun3/sun3ints.c
index 6464ad3..97fa9ed 100644
--- a/arch/m68k/sun3/sun3ints.c
+++ b/arch/m68k/sun3/sun3ints.c
@@ -86,13 +86,12 @@ static void sun3_inthandle(unsigned int irq, struct pt_regs *fp)
__m68k_handle_int(irq, fp);
}

-static struct irq_controller sun3_irq_controller = {
+static struct irq_chip sun3_irq_chip = {
.name = "sun3",
- .lock = __SPIN_LOCK_UNLOCKED(sun3_irq_controller.lock),
- .startup = m68k_irq_startup,
- .shutdown = m68k_irq_shutdown,
- .enable = sun3_enable_irq,
- .disable = sun3_disable_irq,
+ .irq_startup = m68k_irq_startup,
+ .irq_shutdown = m68k_irq_shutdown,
+ .irq_enable = sun3_enable_irq,
+ .irq_disable = sun3_disable_irq,
};

void __init sun3_init_IRQ(void)
@@ -100,7 +99,7 @@ void __init sun3_init_IRQ(void)
*sun3_intreg = 1;

m68k_setup_auto_interrupt(sun3_inthandle);
- m68k_setup_irq_controller(&sun3_irq_controller, IRQ_AUTO_1, 7);
+ m68k_setup_irq_chip(&sun3_irq_chip, IRQ_AUTO_1, 7);
m68k_setup_user_interrupt(VEC_USER, 128, NULL);

if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "int5", NULL))
--
1.7.0.4

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