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| author | thompsa <thompsa@FreeBSD.org> | 2010-06-22 21:13:36 +0000 |
|---|---|---|
| committer | thompsa <thompsa@FreeBSD.org> | 2010-06-22 21:13:36 +0000 |
| commit | df538682b552d82402963a79fd98799af1fbfcdf (patch) | |
| tree | 6cf02114652eb013e1bf0324c7b0226f6b129231 /sys/dev/sound | |
| parent | d85631a5e387f1c1929c0289214236f7794f373f (diff) | |
| download | FreeBSD-src-df538682b552d82402963a79fd98799af1fbfcdf.zip FreeBSD-src-df538682b552d82402963a79fd98799af1fbfcdf.tar.gz | |
Reduce MIDI input buffer size to one USB packet, hence some USB devices don't
properly short terminate their transfers. This fixes a problem where input
appears several seconds late.
Reported by: Alexander Yerenkow
Submitted by: Hans Petter Selasky
Diffstat (limited to 'sys/dev/sound')
| -rw-r--r-- | sys/dev/sound/usb/uaudio.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/sys/dev/sound/usb/uaudio.c b/sys/dev/sound/usb/uaudio.c index 1613266..6ca6459 100644 --- a/sys/dev/sound/usb/uaudio.c +++ b/sys/dev/sound/usb/uaudio.c @@ -507,8 +507,8 @@ static const struct usb_config .type = UE_BULK, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_IN, - .bufsize = UMIDI_BULK_SIZE, - .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, + .bufsize = 4, /* bytes */ + .flags = {.pipe_bof = 1,.short_xfer_ok = 1,.proxy_buffer = 1,}, .callback = &umidi_bulk_read_callback, }, @@ -3366,10 +3366,6 @@ umidi_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) DPRINTF("actlen=%d bytes\n", actlen); - if (actlen == 0) { - /* should not happen */ - goto tr_error; - } pos = 0; pc = usbd_xfer_get_frame(xfer, 0); @@ -3404,8 +3400,6 @@ umidi_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) return; default: -tr_error: - DPRINTF("error=%s\n", usbd_errstr(error)); if (error != USB_ERR_CANCELLED) { |
