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author | Daniel Lezcano <daniel.lezcano@linaro.org> | 2016-06-02 18:20:01 (GMT) |
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committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2016-06-28 08:19:20 (GMT) |
commit | c77b9d44aceed7b85c9951a12df7c2ad865fba02 (patch) | |
tree | 3742f4bda59c65819e97835f782c5bb38eaa5338 /drivers/clocksource/timer-digicolor.c | |
parent | 04410efbb6bc0d0e4de634b02155d1070b102adf (diff) | |
download | linux-c77b9d44aceed7b85c9951a12df7c2ad865fba02.tar.xz |
clocksource/drivers/digicolor: Convert init function to return error
The init functions do not return any error. They behave as the following:
- panic, thus leading to a kernel crash while another timer may work and
make the system boot up correctly
or
- print an error and let the caller unaware if the state of the system
Change that by converting the init functions to return an error conforming
to the CLOCKSOURCE_OF_RET prototype.
Proper error handling (rollback, errno value) will be changed later case
by case, thus this change just return back an error or success in the init
function.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Diffstat (limited to 'drivers/clocksource/timer-digicolor.c')
-rw-r--r-- | drivers/clocksource/timer-digicolor.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/clocksource/timer-digicolor.c b/drivers/clocksource/timer-digicolor.c index 96bb222..b929061 100644 --- a/drivers/clocksource/timer-digicolor.c +++ b/drivers/clocksource/timer-digicolor.c @@ -148,7 +148,7 @@ static u64 notrace digicolor_timer_sched_read(void) return ~readl(dc_timer_dev.base + COUNT(TIMER_B)); } -static void __init digicolor_timer_init(struct device_node *node) +static int __init digicolor_timer_init(struct device_node *node) { unsigned long rate; struct clk *clk; @@ -161,19 +161,19 @@ static void __init digicolor_timer_init(struct device_node *node) dc_timer_dev.base = of_iomap(node, 0); if (!dc_timer_dev.base) { pr_err("Can't map registers"); - return; + return -ENXIO; } irq = irq_of_parse_and_map(node, dc_timer_dev.timer_id); if (irq <= 0) { pr_err("Can't parse IRQ"); - return; + return -EINVAL; } clk = of_clk_get(node, 0); if (IS_ERR(clk)) { pr_err("Can't get timer clock"); - return; + return PTR_ERR(clk); } clk_prepare_enable(clk); rate = clk_get_rate(clk); @@ -190,13 +190,17 @@ static void __init digicolor_timer_init(struct device_node *node) ret = request_irq(irq, digicolor_timer_interrupt, IRQF_TIMER | IRQF_IRQPOLL, "digicolor_timerC", &dc_timer_dev.ce); - if (ret) + if (ret) { pr_warn("request of timer irq %d failed (%d)\n", irq, ret); + return ret; + } dc_timer_dev.ce.cpumask = cpu_possible_mask; dc_timer_dev.ce.irq = irq; clockevents_config_and_register(&dc_timer_dev.ce, rate, 0, 0xffffffff); + + return 0; } -CLOCKSOURCE_OF_DECLARE(conexant_digicolor, "cnxt,cx92755-timer", +CLOCKSOURCE_OF_DECLARE_RET(conexant_digicolor, "cnxt,cx92755-timer", digicolor_timer_init); |