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authorRuslan Bilovol <ruslan.bilovol@gmail.com>2023-03-12 18:28:57 -0400
committerTakashi Iwai <tiwai@suse.de>2023-03-14 17:00:57 +0100
commitce8e5f202f3e73258dc35d217208c1dd7dc648d3 (patch)
tree8783ff1f62ab7551ecf2f99736463aa861e54e26 /sound
parent1a0cc0520b14c345b16b4af366de4dc238da1e6c (diff)
ALSA: usb-audio: remove Wireless USB dead code
Wireless USB host controller support has been removed from Linux Kernel more than 3 years ago in commit caa6772db4c1 ("Staging: remove wusbcore and UWB from the kernel tree."), and the associated code in the snd-usb-audio driver became unused and untested. If in the future somebody will return WUSB/UWB support back to the kernel, the snd-usb-audio driver will reject Wireless USB audio devices at probe stage, and this patch should be reverted. Signed-off-by: Ruslan Bilovol <ruslan.bilovol@gmail.com> Link: https://lore.kernel.org/r/20230312222857.296623-1-ruslan.bilovol@gmail.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/usb/card.c1
-rw-r--r--sound/usb/endpoint.c16
-rw-r--r--sound/usb/helper.c1
3 files changed, 1 insertions, 17 deletions
diff --git a/sound/usb/card.c b/sound/usb/card.c
index 26268ffb8274..f6e99ced8068 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -609,7 +609,6 @@ static int snd_usb_audio_create(struct usb_interface *intf,
case USB_SPEED_LOW:
case USB_SPEED_FULL:
case USB_SPEED_HIGH:
- case USB_SPEED_WIRELESS:
case USB_SPEED_SUPER:
case USB_SPEED_SUPER_PLUS:
break;
diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index 419302e2057e..1e0af1179ca8 100644
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -1173,22 +1173,8 @@ static int data_ep_set_params(struct snd_usb_endpoint *ep)
*/
if (usb_pipein(ep->pipe) || ep->implicit_fb_sync) {
- urb_packs = packs_per_ms;
- /*
- * Wireless devices can poll at a max rate of once per 4ms.
- * For dataintervals less than 5, increase the packet count to
- * allow the host controller to use bursting to fill in the
- * gaps.
- */
- if (snd_usb_get_speed(chip->dev) == USB_SPEED_WIRELESS) {
- int interval = ep->datainterval;
- while (interval < 5) {
- urb_packs <<= 1;
- ++interval;
- }
- }
/* make capture URBs <= 1 ms and smaller than a period */
- urb_packs = min(max_packs_per_urb, urb_packs);
+ urb_packs = min(max_packs_per_urb, packs_per_ms);
while (urb_packs > 1 && urb_packs * maxsize >= ep->cur_period_bytes)
urb_packs >>= 1;
ep->nurbs = MAX_URBS;
diff --git a/sound/usb/helper.c b/sound/usb/helper.c
index a4410267bf70..bf80e55d013a 100644
--- a/sound/usb/helper.c
+++ b/sound/usb/helper.c
@@ -108,7 +108,6 @@ unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip,
{
switch (snd_usb_get_speed(chip->dev)) {
case USB_SPEED_HIGH:
- case USB_SPEED_WIRELESS:
case USB_SPEED_SUPER:
case USB_SPEED_SUPER_PLUS:
if (get_endpoint(alts, 0)->bInterval >= 1 &&