diff options
| author | Sergei Shtylylov <sshtylyov@ru.mvista.com> | 2005-11-18 22:20:31 +0300 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2005-12-01 11:05:10 +0000 |
| commit | 702a96a62b2a37025a752409b0dc08d8473096b1 (patch) | |
| tree | c8be650426703bd8881969493c6d2523a4444bfe /arch/mips/jmr3927 | |
| parent | 5666c0947ede0432ba5148570aa66ffb9febff5b (diff) | |
[MIPS] JMR3927 fixes.
o Check if IRQ is disabled or in progress before reenabling interrupts
in jmr3927_irq_end..
o s/spinlock_irqsave/spin_lock_irqsave/
o s/spinlock_irqrestore/spin_unlock_irqrestore/
o Flush write buffer after setting IRQ mask
o In 2.6 jmr3927_ioc_interrupt interrupt handlers return irqreturn_t
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/jmr3927')
| -rw-r--r-- | arch/mips/jmr3927/rbhma3100/irq.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/arch/mips/jmr3927/rbhma3100/irq.c b/arch/mips/jmr3927/rbhma3100/irq.c index 7cbe14483f13..2810727f1d4e 100644 --- a/arch/mips/jmr3927/rbhma3100/irq.c +++ b/arch/mips/jmr3927/rbhma3100/irq.c @@ -113,7 +113,8 @@ static void jmr3927_irq_ack(unsigned int irq) static void jmr3927_irq_end(unsigned int irq) { - jmr3927_irq_enable(irq); + if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) + jmr3927_irq_enable(irq); } static void jmr3927_irq_disable(unsigned int irq_nr) @@ -121,7 +122,7 @@ static void jmr3927_irq_disable(unsigned int irq_nr) struct tb_irq_space* sp; unsigned long flags; - spinlock_irqsave(&jmr3927_irq_lock, flags); + spin_lock_irqsave(&jmr3927_irq_lock, flags); for (sp = tb_irq_spaces; sp; sp = sp->next) { if (sp->start_irqno <= irq_nr && irq_nr < sp->start_irqno + sp->nr_irqs) { @@ -131,7 +132,7 @@ static void jmr3927_irq_disable(unsigned int irq_nr) break; } } - spinlock_irqrestore(&jmr3927_irq_lock, flags); + spin_unlock_irqrestore(&jmr3927_irq_lock, flags); } static void jmr3927_irq_enable(unsigned int irq_nr) @@ -139,7 +140,7 @@ static void jmr3927_irq_enable(unsigned int irq_nr) struct tb_irq_space* sp; unsigned long flags; - spinlock_irqsave(&jmr3927_irq_lock, flags); + spin_lock_irqsave(&jmr3927_irq_lock, flags); for (sp = tb_irq_spaces; sp; sp = sp->next) { if (sp->start_irqno <= irq_nr && irq_nr < sp->start_irqno + sp->nr_irqs) { @@ -149,7 +150,7 @@ static void jmr3927_irq_enable(unsigned int irq_nr) break; } } - spinlock_irqrestore(&jmr3927_irq_lock, flags); + spin_unlock_irqrestore(&jmr3927_irq_lock, flags); } /* @@ -205,7 +206,10 @@ static void mask_irq_irc(int irq_nr, int space_id) /* update IRCSR */ tx3927_ircptr->imr = 0; tx3927_ircptr->imr = irc_elevel; + /* flush write buffer */ + (void)tx3927_ircptr->ssr; } + static void unmask_irq_irc(int irq_nr, int space_id) { volatile unsigned long *ilrp = &tx3927_ircptr->ilr[irq_nr / 2]; @@ -276,7 +280,7 @@ void jmr3927_irc_irqdispatch(struct pt_regs *regs) do_IRQ(irq + JMR3927_IRQ_IRC, regs); } -static void jmr3927_ioc_interrupt(int irq, void *dev_id, struct pt_regs *regs) +static irqreturn_t jmr3927_ioc_interrupt(int irq, void *dev_id, struct pt_regs *regs) { unsigned char istat = jmr3927_ioc_reg_in(JMR3927_IOC_INTS2_ADDR); int i; @@ -287,13 +291,14 @@ static void jmr3927_ioc_interrupt(int irq, void *dev_id, struct pt_regs *regs) do_IRQ(irq, regs); } } + return IRQ_HANDLED; } static struct irqaction ioc_action = { jmr3927_ioc_interrupt, 0, CPU_MASK_NONE, "IOC", NULL, NULL, }; -static void jmr3927_isac_interrupt(int irq, void *dev_id, struct pt_regs *regs) +static irqreturn_t jmr3927_isac_interrupt(int irq, void *dev_id, struct pt_regs *regs) { unsigned char istat = jmr3927_isac_reg_in(JMR3927_ISAC_INTS2_ADDR); int i; @@ -304,6 +309,7 @@ static void jmr3927_isac_interrupt(int irq, void *dev_id, struct pt_regs *regs) do_IRQ(irq, regs); } } + return IRQ_HANDLED; } static struct irqaction isac_action = { @@ -311,19 +317,23 @@ static struct irqaction isac_action = { }; -static void jmr3927_isaerr_interrupt(int irq, void * dev_id, struct pt_regs * regs) +static irqreturn_t jmr3927_isaerr_interrupt(int irq, void * dev_id, struct pt_regs * regs) { printk(KERN_WARNING "ISA error interrupt (irq 0x%x).\n", irq); + + return IRQ_HANDLED; } static struct irqaction isaerr_action = { jmr3927_isaerr_interrupt, 0, CPU_MASK_NONE, "ISA error", NULL, NULL, }; -static void jmr3927_pcierr_interrupt(int irq, void * dev_id, struct pt_regs * regs) +static irqreturn_t jmr3927_pcierr_interrupt(int irq, void * dev_id, struct pt_regs * regs) { printk(KERN_WARNING "PCI error interrupt (irq 0x%x).\n", irq); printk(KERN_WARNING "pcistat:%02x, lbstat:%04lx\n", tx3927_pcicptr->pcistat, tx3927_pcicptr->lbstat); + + return IRQ_HANDLED; } static struct irqaction pcierr_action = { jmr3927_pcierr_interrupt, 0, CPU_MASK_NONE, "PCI error", NULL, NULL, |