diff options
| author | Michal Simek <monstr@monstr.eu> | 2012-06-29 14:21:52 +0200 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2012-09-11 09:24:57 +0200 |
| commit | 8706908a2522f7d38f916e38ee13ca91e9f30bc5 (patch) | |
| tree | 171b55936126f600ae26af35a1f77dc3352442ed /arch | |
| parent | e35c05baa17fc049f32c675b6ee0aaa109980dcb (diff) | |
| download | u-boot-imx-8706908a2522f7d38f916e38ee13ca91e9f30bc5.zip u-boot-imx-8706908a2522f7d38f916e38ee13ca91e9f30bc5.tar.gz u-boot-imx-8706908a2522f7d38f916e38ee13ca91e9f30bc5.tar.bz2 | |
microblaze: intc: Registering interrupt should return value
Return value to find out if un/registration was succesful.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/microblaze/cpu/interrupts.c | 16 | ||||
| -rw-r--r-- | arch/microblaze/include/asm/microblaze_intc.h | 11 |
2 files changed, 19 insertions, 8 deletions
diff --git a/arch/microblaze/cpu/interrupts.c b/arch/microblaze/cpu/interrupts.c index ee67082..08f6bad 100644 --- a/arch/microblaze/cpu/interrupts.c +++ b/arch/microblaze/cpu/interrupts.c @@ -91,14 +91,13 @@ static void disable_one_interrupt(int irq) #endif } -/* adding new handler for interrupt */ -void install_interrupt_handler (int irq, interrupt_handler_t * hdlr, void *arg) +int install_interrupt_handler(int irq, interrupt_handler_t *hdlr, void *arg) { struct irq_action *act; /* irq out of range */ if ((irq < 0) || (irq > irq_no)) { puts ("IRQ out of range\n"); - return; + return -1; } act = &vecs[irq]; if (hdlr) { /* enable */ @@ -106,11 +105,14 @@ void install_interrupt_handler (int irq, interrupt_handler_t * hdlr, void *arg) act->arg = arg; act->count = 0; enable_one_interrupt (irq); - } else { /* disable */ - act->handler = (interrupt_handler_t *) def_hdlr; - act->arg = (void *)irq; - disable_one_interrupt (irq); + return 0; } + + /* Disable */ + act->handler = (interrupt_handler_t *) def_hdlr; + act->arg = (void *)irq; + disable_one_interrupt(irq); + return 1; } /* initialization interrupt controller - hardware */ diff --git a/arch/microblaze/include/asm/microblaze_intc.h b/arch/microblaze/include/asm/microblaze_intc.h index 6142b9c..e9640f5 100644 --- a/arch/microblaze/include/asm/microblaze_intc.h +++ b/arch/microblaze/include/asm/microblaze_intc.h @@ -39,7 +39,16 @@ struct irq_action { int count; /* number of interrupt */ }; -void install_interrupt_handler (int irq, interrupt_handler_t * hdlr, +/** + * Register and unregister interrupt handler rutines + * + * @param irq IRQ number + * @param hdlr Interrupt handler rutine + * @param arg Pointer to argument which is passed to int. handler rutine + * @return 0 if registration pass, 1 if unregistration pass, + * or an error code < 0 otherwise + */ +int install_interrupt_handler(int irq, interrupt_handler_t *hdlr, void *arg); int interrupts_init(void); |