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CLOCKSOURCE: mips-gic: Add missing error returns checks

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This commit adds the required checks on the functions that return
an error. Some of them are not critical, so only a warning is
printed.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: James Hartley <James.Hartley@imgtec.com>
Cc: Govindraj Raja <Govindraj.Raja@imgtec.com>
Cc: Damien Horsley <Damien.Horsley@imgtec.com>
Cc: James Hogan <James.Hogan@imgtec.com>
Cc: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Patchwork: https://patchwork.linux-mips.org/patch/10780/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ezequiel Garcia 2015-07-27 15:00:13 +01:00 committed by Ralf Baechle
parent eb811c73b6
commit f95ac8558b
1 changed files with 13 additions and 3 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

16
drivers/clocksource/mips-gic-timer.c
View file

@ -100,12 +100,18 @@ static struct notifier_block gic_cpu_nb = {
static int gic_clockevent_init(void) static int gic_clockevent_init(void)
{ {
int ret;
if (!cpu_has_counter || !gic_frequency) if (!cpu_has_counter || !gic_frequency)
return -ENXIO; return -ENXIO;
setup_percpu_irq(gic_timer_irq, &gic_compare_irqaction); ret = setup_percpu_irq(gic_timer_irq, &gic_compare_irqaction);
if (ret < 0)
return ret;
register_cpu_notifier(&gic_cpu_nb); ret = register_cpu_notifier(&gic_cpu_nb);
if (ret < 0)
pr_warn("GIC: Unable to register CPU notifier\n");
gic_clockevent_cpu_init(this_cpu_ptr(&gic_clockevent_device)); gic_clockevent_cpu_init(this_cpu_ptr(&gic_clockevent_device));
@ -125,13 +131,17 @@ static struct clocksource gic_clocksource = {
static void __init __gic_clocksource_init(void) static void __init __gic_clocksource_init(void)
{ {
int ret;
/* Set clocksource mask. */ /* Set clocksource mask. */
gic_clocksource.mask = CLOCKSOURCE_MASK(gic_get_count_width()); gic_clocksource.mask = CLOCKSOURCE_MASK(gic_get_count_width());
/* Calculate a somewhat reasonable rating value. */ /* Calculate a somewhat reasonable rating value. */
gic_clocksource.rating = 200 + gic_frequency / 10000000; gic_clocksource.rating = 200 + gic_frequency / 10000000;
clocksource_register_hz(&gic_clocksource, gic_frequency); ret = clocksource_register_hz(&gic_clocksource, gic_frequency);
if (ret < 0)
pr_warn("GIC: Unable to register clocksource\n");
gic_clockevent_init(); gic_clockevent_init();