[PATCHv2 4/4] clocksource: tcb_clksrc: unprepare clock in case of failure

From: GaÃl PORTAY
Date: Fri Aug 29 2014 - 12:26:39 EST


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

Also update to request_irq.

Signed-off-by: GaÃl PORTAY <g.portay@xxxxxxxxxxx>
---
drivers/clocksource/tcb_clksrc.c | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/drivers/clocksource/tcb_clksrc.c b/drivers/clocksource/tcb_clksrc.c
index f922e81..8bdbc45 100644
--- a/drivers/clocksource/tcb_clksrc.c
+++ b/drivers/clocksource/tcb_clksrc.c
@@ -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);

--
1.9.3

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