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

Also update to request_irq.

Signed-off-by: Gaël PORTAY <gael.por...@gmail.com>
Acked-by: Daniel Lezcano <daniel.lezc...@linaro.org>
Acked-by: Boris Brezillon <boris.brezil...@free-electrons.com>
---
 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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