在 2015年09月30日 18:08, Daniel Lezcano 写道:
The current code assumes the 'irq_of_parse_and_map' will return NO_IRQ in case of failure. Unfortunately, the NO_IRQ is not consistent across the different architectures and we must not rely on it. NO_IRQ is equal to '-1' on ARM and 'irq_of_parse_and_map' returns '0' in case of an error. Hence, the latter won't be detected and will lead to a crash. Fix this by just checking 'irq' is different from zero. Signed-off-by: Daniel Lezcano <daniel.lezc...@linaro.org>
As Per- discuss, you can free add my test tag. Tested-by: Caesar Wang <w...@rock-chips.com>
--- drivers/clocksource/rockchip_timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clocksource/rockchip_timer.c b/drivers/clocksource/rockchip_timer.c index bb2c2b0..d3c1742 100644 --- a/drivers/clocksource/rockchip_timer.c +++ b/drivers/clocksource/rockchip_timer.c @@ -148,7 +148,7 @@ static void __init rk_timer_init(struct device_node *np) bc_timer.freq = clk_get_rate(timer_clk);irq = irq_of_parse_and_map(np, 0);- if (irq == NO_IRQ) { + if (!irq) { pr_err("Failed to map interrupts for '%s'\n", TIMER_NAME); return; }
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