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| author | Takashi Iwai <tiwai@suse.de> | 2020-09-03 12:41:24 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2020-09-09 18:33:15 +0200 |
| commit | 45e4d67f8a53e713833292cc5fef3603294a5914 (patch) | |
| tree | 146333ec90d978866cc7b859c6f9b3dce6d87dab /sound/usb/misc | |
| parent | ALSA: usb-audio: Replace tasklet with work (diff) | |
| download | linux-45e4d67f8a53e713833292cc5fef3603294a5914.tar.xz linux-45e4d67f8a53e713833292cc5fef3603294a5914.zip | |
ALSA: ua101: Replace tasklet with work
The tasklet is an old API that should be deprecated, usually can be
converted to another decent API. In UA101 driver, a tasklet is still
used for handling the output URBs. It can be achieved gracefully with
a work queued in the high-prio system workqueue, too.
This patch replaces the tasklet usage in UA101 driver with a simple
work.
Link: https://lore.kernel.org/r/20200903104131.21097-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/misc')
| -rw-r--r-- | sound/usb/misc/ua101.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/sound/usb/misc/ua101.c b/sound/usb/misc/ua101.c index 3b2dce1043f5..6b30155964ec 100644 --- a/sound/usb/misc/ua101.c +++ b/sound/usb/misc/ua101.c @@ -96,7 +96,7 @@ struct ua101 { u8 rate_feedback[MAX_QUEUE_LENGTH]; struct list_head ready_playback_urbs; - struct tasklet_struct playback_tasklet; + struct work_struct playback_work; wait_queue_head_t alsa_capture_wait; wait_queue_head_t rate_feedback_wait; wait_queue_head_t alsa_playback_wait; @@ -188,7 +188,7 @@ static void playback_urb_complete(struct urb *usb_urb) spin_lock_irqsave(&ua->lock, flags); list_add_tail(&urb->ready_list, &ua->ready_playback_urbs); if (ua->rate_feedback_count > 0) - tasklet_schedule(&ua->playback_tasklet); + queue_work(system_highpri_wq, &ua->playback_work); ua->playback.substream->runtime->delay -= urb->urb.iso_frame_desc[0].length / ua->playback.frame_bytes; @@ -247,9 +247,9 @@ static inline void add_with_wraparound(struct ua101 *ua, *value -= ua->playback.queue_length; } -static void playback_tasklet(struct tasklet_struct *t) +static void playback_work(struct work_struct *work) { - struct ua101 *ua = from_tasklet(ua, t, playback_tasklet); + struct ua101 *ua = container_of(work, struct ua101, playback_work); unsigned long flags; unsigned int frames; struct ua101_urb *urb; @@ -401,7 +401,7 @@ static void capture_urb_complete(struct urb *urb) } if (test_bit(USB_PLAYBACK_RUNNING, &ua->states) && !list_empty(&ua->ready_playback_urbs)) - tasklet_schedule(&ua->playback_tasklet); + queue_work(system_highpri_wq, &ua->playback_work); } spin_unlock_irqrestore(&ua->lock, flags); @@ -532,7 +532,7 @@ static void stop_usb_playback(struct ua101 *ua) kill_stream_urbs(&ua->playback); - tasklet_kill(&ua->playback_tasklet); + cancel_work_sync(&ua->playback_work); disable_iso_interface(ua, INTF_PLAYBACK); } @@ -550,7 +550,7 @@ static int start_usb_playback(struct ua101 *ua) return 0; kill_stream_urbs(&ua->playback); - tasklet_kill(&ua->playback_tasklet); + cancel_work_sync(&ua->playback_work); err = enable_iso_interface(ua, INTF_PLAYBACK); if (err < 0) @@ -1218,7 +1218,7 @@ static int ua101_probe(struct usb_interface *interface, spin_lock_init(&ua->lock); mutex_init(&ua->mutex); INIT_LIST_HEAD(&ua->ready_playback_urbs); - tasklet_setup(&ua->playback_tasklet, playback_tasklet); + INIT_WORK(&ua->playback_work, playback_work); init_waitqueue_head(&ua->alsa_capture_wait); init_waitqueue_head(&ua->rate_feedback_wait); init_waitqueue_head(&ua->alsa_playback_wait); |