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| author | Ezequiel Garcia <ezequiel.garcia@imgtec.com> | 2015-07-27 15:00:13 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-09-03 12:08:06 +0200 |
| commit | f95ac8558b88a5e9ae2b1d580a5cc55bffa512fa (patch) | |
| tree | 39fb589fedf27e5baed8770d3bc94859b8d6a49d /drivers/clocksource | |
| parent | eb811c73b69f18cefb7a63f22fe07212c6575650 (diff) | |
| download | linux-f95ac8558b88a5e9ae2b1d580a5cc55bffa512fa.tar.bz2 | |
CLOCKSOURCE: mips-gic: Add missing error returns checks
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>
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/mips-gic-timer.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/clocksource/mips-gic-timer.c b/drivers/clocksource/mips-gic-timer.c index 913585d93466..c4352f078492 100644 --- a/drivers/clocksource/mips-gic-timer.c +++ b/drivers/clocksource/mips-gic-timer.c @@ -100,12 +100,18 @@ static struct notifier_block gic_cpu_nb = { static int gic_clockevent_init(void) { + int ret; + if (!cpu_has_counter || !gic_frequency) 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)); @@ -125,13 +131,17 @@ static struct clocksource gic_clocksource = { static void __init __gic_clocksource_init(void) { + int ret; + /* Set clocksource mask. */ gic_clocksource.mask = CLOCKSOURCE_MASK(gic_get_count_width()); /* Calculate a somewhat reasonable rating value. */ 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(); |