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clocksource: tcb_clksrc: sanitize IRQ request 

The clock is not unprepared in case of the request IRQ fails.

Also update to request_irq.

Signed-off-by: Gaël PORTAY <gael.portay@gmail.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Gaël PORTAY 2014-09-06 19:52:37 +02:00 committed by Nicolas Ferre
parent 84f462371c
commit d07a1ecdfb
1 changed files with 4 additions and 9 deletions
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13
drivers/clocksource/tcb_clksrc.c
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@ -178,12 +178,6 @@ static irqreturn_t ch2_irq(int irq, void *handle)
return IRQ_NONE;
}
static struct irqaction tc_irqaction = {
.name = "tc_clkevt",
.flags = IRQF_TIMER,
.handler = ch2_irq,
};
static int __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
{
int ret;
@ -198,15 +192,16 @@ static int __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
clkevt.regs = tc->regs;
clkevt.clk = t2_clk;
tc_irqaction.dev_id = &clkevt;
timer_clock = clk32k_divisor_idx;
clkevt.clkevt.cpumask = cpumask_of(0);
ret = setup_irq(irq, &tc_irqaction);
if (ret)
ret = request_irq(irq, ch2_irq, IRQF_TIMER, "tc_clkevt", &clkevt);
if (ret) {
clk_disable_unprepare(t2_clk);
return ret;
}
clockevents_config_and_register(&clkevt.clkevt, 32768, 1, 0xffff);