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>

diff --git a/sound/usb/card.h b/sound/usb/card.h
index 1dd7a51..3e16b92 100644 (file)
--- a/sound/usb/card.h
+++ b/sound/usb/card.h
@@ -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];
 

diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index 5d61872..5f1d5f1 100644 (file)
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -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);