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ALSA: usb-audio: Replace slave/master terms 

Follow the inclusive terminology, just replace sync_master/sync_slave
with sync_source/sync_sink.  It's also a bit clearer from its meaning,
too.

Tested-by: Keith Milner <kamilner@superlative.org>
Tested-by: Dylan Robinson <dylan_robinson@motu.com>
Link: https://lore.kernel.org/r/20201123085347.19667-34-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2020-11-23 09:53:39 +01:00
parent 13ee03361f
commit 53837b4ac2
2 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sound/usb/card.h
View File

@ -71,8 +71,8 @@ struct snd_usb_endpoint {
struct urb *urb);
struct snd_usb_substream *data_subs;
struct snd_usb_endpoint *sync_master;
struct snd_usb_endpoint *sync_slave;
struct snd_usb_endpoint *sync_source;
struct snd_usb_endpoint *sync_sink;
struct snd_urb_ctx urb[MAX_URBS];

28
sound/usb/endpoint.c
View File

@ -175,7 +175,7 @@ int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep,
{
if (ctx->packet_size[idx])
return ctx->packet_size[idx];
else if (ep->sync_master)
else if (ep->sync_source)
return slave_next_packet_size(ep);
else
return next_packet_size(ep);
@ -205,16 +205,16 @@ static void retire_inbound_urb(struct snd_usb_endpoint *ep,
struct snd_urb_ctx *urb_ctx)
{
struct urb *urb = urb_ctx->urb;
struct snd_usb_endpoint *sync_slave;
struct snd_usb_endpoint *sync_sink;
if (unlikely(ep->skip_packets > 0)) {
ep->skip_packets--;
return;
}
sync_slave = READ_ONCE(ep->sync_slave);
if (sync_slave)
snd_usb_handle_sync_urb(sync_slave, ep, urb);
sync_sink = READ_ONCE(ep->sync_sink);
if (sync_sink)
snd_usb_handle_sync_urb(sync_sink, ep, urb);
call_retire_callback(ep, urb);
}
@ -708,7 +708,7 @@ void snd_usb_endpoint_set_sync(struct snd_usb_audio *chip,
struct snd_usb_endpoint *data_ep,
struct snd_usb_endpoint *sync_ep)
{
data_ep->sync_master = sync_ep;
data_ep->sync_source = sync_ep;
}
/*
@ -802,7 +802,7 @@ static int wait_clear_urbs(struct snd_usb_endpoint *ep)
alive, ep->ep_num);
clear_bit(EP_FLAG_STOPPING, &ep->flags);
ep->sync_slave = NULL;
ep->sync_sink = NULL;
snd_usb_endpoint_set_callback(ep, NULL, NULL, NULL);
return 0;
@ -969,9 +969,9 @@ static int data_ep_set_params(struct snd_usb_endpoint *ep)
packs_per_ms = 1;
max_packs_per_urb = MAX_PACKS;
}
if (ep->sync_master && !ep->implicit_fb_sync)
if (ep->sync_source && !ep->implicit_fb_sync)
max_packs_per_urb = min(max_packs_per_urb,
1U << ep->sync_master->syncinterval);
1U << ep->sync_source->syncinterval);
max_packs_per_urb = max(1u, max_packs_per_urb >> ep->datainterval);
/*
@ -1015,7 +1015,7 @@ static int data_ep_set_params(struct snd_usb_endpoint *ep)
minsize = (ep->freqn >> (16 - ep->datainterval)) *
(frame_bits >> 3);
/* with sync from device, assume it can be 12% lower */
if (ep->sync_master)
if (ep->sync_source)
minsize -= minsize >> 3;
minsize = max(minsize, 1u);
@ -1272,8 +1272,8 @@ int snd_usb_endpoint_start(struct snd_usb_endpoint *ep)
if (atomic_read(&ep->chip->shutdown))
return -EBADFD;
if (ep->sync_master)
WRITE_ONCE(ep->sync_master->sync_slave, ep);
if (ep->sync_source)
WRITE_ONCE(ep->sync_source->sync_sink, ep);
usb_audio_dbg(ep->chip, "Starting %s EP 0x%x (running %d)\n",
ep_type_name(ep->type), ep->ep_num,
@ -1366,8 +1366,8 @@ void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep)
if (snd_BUG_ON(!atomic_read(&ep->running)))
return;
if (ep->sync_master)
WRITE_ONCE(ep->sync_master->sync_slave, NULL);
if (ep->sync_source)
WRITE_ONCE(ep->sync_source->sync_sink, NULL);
if (!atomic_dec_return(&ep->running))
stop_and_unlink_urbs(ep, false, false);