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| author | Thomas Gleixner <tglx@linutronix.de> | 2014-06-11 23:59:15 +0000 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-06-12 12:58:41 +0200 |
| commit | 2afe8be85c2c79fc574c0d322ab60921d5deed43 (patch) | |
| tree | 484833cf4f0e6424553878c1977ec2a6fcb96a2b /sound/pci | |
| parent | 26204e048d2ee0c65e0539f7cc2b66f845a19a41 (diff) | |
| download | lwn-2afe8be85c2c79fc574c0d322ab60921d5deed43.tar.gz lwn-2afe8be85c2c79fc574c0d322ab60921d5deed43.zip | |
ALSA: intel8x0: Use ktime and ktime_get()
do_posix_clock_monotonic_gettime() is a leftover from the initial
posix timer implementation which maps to ktime_get_ts() and returns
the monotonic time in a timespec.
Use ktime based ktime_get() and use the ktime_delta_us() function to
calculate the delta instead of open coding the timespec math.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/intel8x0.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c index 68340d7df76d..c91860e0a28d 100644 --- a/sound/pci/intel8x0.c +++ b/sound/pci/intel8x0.c @@ -2779,7 +2779,7 @@ static void intel8x0_measure_ac97_clock(struct intel8x0 *chip) unsigned long port; unsigned long pos, pos1, t; int civ, timeout = 1000, attempt = 1; - struct timespec start_time, stop_time; + ktime_t start_time, stop_time; if (chip->ac97_bus->clock != 48000) return; /* specified in module option */ @@ -2813,7 +2813,7 @@ static void intel8x0_measure_ac97_clock(struct intel8x0 *chip) iputbyte(chip, port + ICH_REG_OFF_CR, ICH_IOCE); iputdword(chip, ICHREG(ALI_DMACR), 1 << ichdev->ali_slot); } - do_posix_clock_monotonic_gettime(&start_time); + start_time = ktime_get(); spin_unlock_irq(&chip->reg_lock); msleep(50); spin_lock_irq(&chip->reg_lock); @@ -2837,7 +2837,7 @@ static void intel8x0_measure_ac97_clock(struct intel8x0 *chip) pos += ichdev->position; } chip->in_measurement = 0; - do_posix_clock_monotonic_gettime(&stop_time); + stop_time = ktime_get(); /* stop */ if (chip->device_type == DEVICE_ALI) { iputdword(chip, ICHREG(ALI_DMACR), 1 << (ichdev->ali_slot + 16)); @@ -2865,9 +2865,7 @@ static void intel8x0_measure_ac97_clock(struct intel8x0 *chip) } pos /= 4; - t = stop_time.tv_sec - start_time.tv_sec; - t *= 1000000; - t += (stop_time.tv_nsec - start_time.tv_nsec) / 1000; + t = ktime_us_delta(stop_time, start_time); dev_info(chip->card->dev, "%s: measured %lu usecs (%lu samples)\n", __func__, t, pos); if (t == 0) { |