From ce8e5f202f3e73258dc35d217208c1dd7dc648d3 Mon Sep 17 00:00:00 2001 From: Ruslan Bilovol Date: Sun, 12 Mar 2023 18:28:57 -0400 Subject: [PATCH] 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 Link: https://lore.kernel.org/r/20230312222857.296623-1-ruslan.bilovol@gmail.com Signed-off-by: Takashi Iwai --- sound/usb/card.c | 1 - sound/usb/endpoint.c | 16 +--------------- sound/usb/helper.c | 1 - 3 files changed, 1 insertion(+), 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 &&