diff options
author | Daniel Lezcano <daniel.lezcano@linaro.org> | 2016-05-31 19:38:30 +0200 |
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committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2016-06-28 10:19:18 +0200 |
commit | be5eb33d5d1bd076d98564ba2fea7a4ed36ca24f (patch) | |
tree | 94bd6b3f3741a18ad853c81b0859ebc14ccc0b3a /drivers/clocksource/asm9260_timer.c | |
parent | 5e558ebd3d88d3492e0fd3b021d071fad7e2e3d2 (diff) | |
download | op-kernel-dev-be5eb33d5d1bd076d98564ba2fea7a4ed36ca24f.zip op-kernel-dev-be5eb33d5d1bd076d98564ba2fea7a4ed36ca24f.tar.gz |
clocksource/drivers/asm9260: 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>
Diffstat (limited to 'drivers/clocksource/asm9260_timer.c')
-rw-r--r-- | drivers/clocksource/asm9260_timer.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/clocksource/asm9260_timer.c b/drivers/clocksource/asm9260_timer.c index 217438d..d113c02 100644 --- a/drivers/clocksource/asm9260_timer.c +++ b/drivers/clocksource/asm9260_timer.c @@ -184,7 +184,7 @@ static irqreturn_t asm9260_timer_interrupt(int irq, void *dev_id) * Timer initialization * --------------------------------------------------------------------------- */ -static void __init asm9260_timer_init(struct device_node *np) +static int __init asm9260_timer_init(struct device_node *np) { int irq; struct clk *clk; @@ -192,20 +192,26 @@ static void __init asm9260_timer_init(struct device_node *np) unsigned long rate; priv.base = of_io_request_and_map(np, 0, np->name); - if (IS_ERR(priv.base)) - panic("%s: unable to map resource", np->name); + if (IS_ERR(priv.base)) { + pr_err("%s: unable to map resource", np->name); + return PTR_ERR(priv.base); + } clk = of_clk_get(np, 0); ret = clk_prepare_enable(clk); - if (ret) - panic("Failed to enable clk!\n"); + if (ret) { + pr_err("Failed to enable clk!\n"); + return ret; + } irq = irq_of_parse_and_map(np, 0); ret = request_irq(irq, asm9260_timer_interrupt, IRQF_TIMER, DRIVER_NAME, &event_dev); - if (ret) - panic("Failed to setup irq!\n"); + if (ret) { + pr_err("Failed to setup irq!\n"); + return ret; + } /* set all timers for count-up */ writel_relaxed(BM_DIR_DEFAULT, priv.base + HW_DIR); @@ -229,6 +235,8 @@ static void __init asm9260_timer_init(struct device_node *np) priv.ticks_per_jiffy = DIV_ROUND_CLOSEST(rate, HZ); event_dev.cpumask = cpumask_of(0); clockevents_config_and_register(&event_dev, rate, 0x2c00, 0xfffffffe); + + return 0; } -CLOCKSOURCE_OF_DECLARE(asm9260_timer, "alphascale,asm9260-timer", +CLOCKSOURCE_OF_DECLARE_RET(asm9260_timer, "alphascale,asm9260-timer", asm9260_timer_init); |