[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <tip-447fbbdc2cd58cdaf410fefef365a9ce38833157@git.kernel.org>
Date: Wed, 22 Apr 2015 12:05:37 -0700
From: tip-bot for Thomas Gleixner <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: hpa@...or.com, linux-kernel@...r.kernel.org, tglx@...utronix.de,
preeti@...ux.vnet.ibm.com, mingo@...nel.org, mtosatti@...hat.com,
fweisbec@...il.com, perex@...ex.cz, viresh.kumar@...aro.org,
tiwai@...e.de, peterz@...radead.org
Subject: [tip:timers/core] sound:
Use hrtimer_resolution instead of hrtimer_get_res()
Commit-ID: 447fbbdc2cd58cdaf410fefef365a9ce38833157
Gitweb: http://git.kernel.org/tip/447fbbdc2cd58cdaf410fefef365a9ce38833157
Author: Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Tue, 14 Apr 2015 21:08:30 +0000
Committer: Thomas Gleixner <tglx@...utronix.de>
CommitDate: Wed, 22 Apr 2015 17:06:48 +0200
sound: Use hrtimer_resolution instead of hrtimer_get_res()
No point in converting a timespec now that the value is directly
accessible. Get rid of the null check while at it. Resolution is
guaranteed to be > 0.
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Acked-by: Takashi Iwai <tiwai@...e.de>
Acked-by: Peter Zijlstra <peterz@...radead.org>
Cc: Preeti U Murthy <preeti@...ux.vnet.ibm.com>
Cc: Viresh Kumar <viresh.kumar@...aro.org>
Cc: Marcelo Tosatti <mtosatti@...hat.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jaroslav Kysela <perex@...ex.cz>
Cc: alsa-devel@...a-project.org
Link: http://lkml.kernel.org/r/20150414203500.799133359@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
sound/core/hrtimer.c | 9 +--------
sound/drivers/pcsp/pcsp.c | 15 ++++++---------
2 files changed, 7 insertions(+), 17 deletions(-)
diff --git a/sound/core/hrtimer.c b/sound/core/hrtimer.c
index 886be7d..f845ecf 100644
--- a/sound/core/hrtimer.c
+++ b/sound/core/hrtimer.c
@@ -121,16 +121,9 @@ static struct snd_timer *mytimer;
static int __init snd_hrtimer_init(void)
{
struct snd_timer *timer;
- struct timespec tp;
int err;
- hrtimer_get_res(CLOCK_MONOTONIC, &tp);
- if (tp.tv_sec > 0 || !tp.tv_nsec) {
- pr_err("snd-hrtimer: Invalid resolution %u.%09u",
- (unsigned)tp.tv_sec, (unsigned)tp.tv_nsec);
- return -EINVAL;
- }
- resolution = tp.tv_nsec;
+ resolution = hrtimer_resolution;
/* Create a new timer and set up the fields */
err = snd_timer_global_new("hrtimer", SNDRV_TIMER_GLOBAL_HRTIMER,
diff --git a/sound/drivers/pcsp/pcsp.c b/sound/drivers/pcsp/pcsp.c
index d9647bd..eb54702 100644
--- a/sound/drivers/pcsp/pcsp.c
+++ b/sound/drivers/pcsp/pcsp.c
@@ -42,16 +42,13 @@ struct snd_pcsp pcsp_chip;
static int snd_pcsp_create(struct snd_card *card)
{
static struct snd_device_ops ops = { };
- struct timespec tp;
- int err;
- int div, min_div, order;
-
- hrtimer_get_res(CLOCK_MONOTONIC, &tp);
+ unsigned int resolution = hrtimer_resolution;
+ int err, div, min_div, order;
if (!nopcm) {
- if (tp.tv_sec || tp.tv_nsec > PCSP_MAX_PERIOD_NS) {
+ if (resolution > PCSP_MAX_PERIOD_NS) {
printk(KERN_ERR "PCSP: Timer resolution is not sufficient "
- "(%linS)\n", tp.tv_nsec);
+ "(%linS)\n", resolution);
printk(KERN_ERR "PCSP: Make sure you have HPET and ACPI "
"enabled.\n");
printk(KERN_ERR "PCSP: Turned into nopcm mode.\n");
@@ -59,13 +56,13 @@ static int snd_pcsp_create(struct snd_card *card)
}
}
- if (loops_per_jiffy >= PCSP_MIN_LPJ && tp.tv_nsec <= PCSP_MIN_PERIOD_NS)
+ if (loops_per_jiffy >= PCSP_MIN_LPJ && resolution <= PCSP_MIN_PERIOD_NS)
min_div = MIN_DIV;
else
min_div = MAX_DIV;
#if PCSP_DEBUG
printk(KERN_DEBUG "PCSP: lpj=%li, min_div=%i, res=%li\n",
- loops_per_jiffy, min_div, tp.tv_nsec);
+ loops_per_jiffy, min_div, resolution);
#endif
div = MAX_DIV / min_div;
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists