Clemens Ladisch 1ca8b20130 ALSA: usb-audio: prevent CH345 multiport output SysEx corruption ... The CH345 USB MIDI chip has two output ports. However, they are multiplexed through one pin, and the number of ports cannot be reduced even for hardware that implements only one connector, so for those devices, data sent to either port ends up on the same hardware output. This becomes a problem when both ports are used at the same time, as longer MIDI commands (such as SysEx messages) are likely to be interrupted by messages from the other port, and thus to get lost. It would not be possible for the driver to detect how many ports the device actually has, except that in practice, _all_ devices built with the CH345 have only one port. So we can just ignore the device's descriptors, and hardcode one output port. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Cc: stable@vger.kernel.org Signed-off-by: Takashi Iwai <tiwai@suse.de>		2015-11-16 08:59:24 +01:00
..
6fire	ALSA: 6fire: Convert byte_rev_table uses to bitrev8	2014-11-14 08:01:53 +01:00
bcd2000	ALSA: bcd2000: Make local data static	2015-05-26 13:00:01 +02:00
caiaq	ALSA: snd-usb-caiaq: fix stream count check	2015-01-05 08:56:19 +01:00
hiface	ALSA: usb: Convert to snd_card_new() with a device pointer	2014-02-12 11:18:00 +01:00
line6	ALSA: line6: Fix -EBUSY error during active monitoring	2015-07-14 15:19:37 +02:00
misc	ALSA: pcm: Add snd_pcm_stop_xrun() helper	2014-11-09 18:20:40 +01:00
usx2y	ALSA: usx2y: Move UAPI definition into include/uapi/sound/usb_stream.h	2015-01-28 17:33:49 +01:00
Kconfig	ALSA: move line6 usb driver into sound/usb	2015-01-12 22:29:57 +01:00
Makefile	ALSA: line6: Split to each driver	2015-01-20 08:14:17 +01:00
card.c	ALSA: usb-audio: Handle normal and auto-suspend equally	2015-08-26 16:12:25 +02:00
card.h	ALSA: USB-audio: Add quirk for Zoom R16/24 playback	2015-10-19 12:38:09 +02:00
clock.c	ALSA: usb-audio: Don't attempt to get Lifecam HD-5000 sample rate	2015-02-17 07:20:04 +01:00
clock.h	ALSA: usb-audio: UAC2: do clock validity check earlier	2013-04-04 08:30:59 +02:00
debug.h	ALSA: usb-audio: make hwc_debug a noop in case HW_CONST_DEBUG is not set	2011-05-18 11:44:35 +02:00
endpoint.c	ALSA: USB-audio: Adjust max packet size calculation for tx_length_quirk	2015-10-19 12:38:10 +02:00
endpoint.h	ALSA: usb-audio: Pass direct struct pointer instead of list_head	2014-11-04 15:09:10 +01:00
format.c	ALSA: usb-audio: Fix audio output on Roland SC-D70 sound module	2015-04-21 07:59:10 +02:00
format.h	ALSA: usb-audio: store protocol version in struct audioformat	2013-06-27 21:59:47 +02:00
helper.c	ALSA: usb-audio: support wireless devices in snd_usb_parse_datainterval	2013-10-07 12:52:21 +02:00
helper.h	ALSA: usb-audio: increase control transfer timeout	2011-09-27 09:21:48 +02:00
midi.c	ALSA: usb-audio: prevent CH345 multiport output SysEx corruption	2015-11-16 08:59:24 +01:00
midi.h	ALSA: usb-audio: Whitespace cleanups for sound/usb/midi.*	2014-08-05 20:08:00 +02:00
mixer.c	ALSA: usb-audio: correct the value cache check.	2015-08-28 10:38:25 +02:00
mixer.h	ALSA: usb-audio: Fix parameter block size for UAC2 control requests	2015-08-14 16:26:50 +02:00
mixer_maps.c	ALSA: usb-audio: add dB range mapping for some devices	2015-07-29 09:28:02 +02:00
mixer_quirks.c	ALSA: usb-audio: harmless underflow in snd_audigy2nx_led_put()	2015-09-28 14:33:03 +02:00
mixer_quirks.h	ALSA: usb-mixer: factor out quirks	2010-03-12 12:20:26 +01:00
mixer_scarlett.c	ALSA: usb-audio: Fix Scarlett 6i6 initialization typo	2014-12-18 08:39:17 +01:00
mixer_scarlett.h	ALSA: usb-audio: Scarlett mixer interface for 6i6, 18i6, 18i8 and 18i20	2014-11-13 07:32:39 +01:00
pcm.c	ALSA: USB-audio: Add quirk for Zoom R16/24 playback	2015-10-19 12:38:09 +02:00
pcm.h	ALSA: usb: refine delay information with USB frame counter	2011-09-12 10:30:20 +02:00
power.h	ALSA: usbaudio: implement USB autosuspend	2011-03-11 14:59:29 +01:00
proc.c	ALSA: usb-audio: Avoid nested autoresume calls	2015-08-26 15:38:25 +02:00
proc.h	ALSA: usb-audio: refactor code	2010-03-05 08:17:14 +01:00
quirks-table.h	ALSA: usb-audio: prevent CH345 multiport output SysEx corruption	2015-11-16 08:59:24 +01:00
quirks.c	ALSA: usb-audio: prevent CH345 multiport output SysEx corruption	2015-11-16 08:59:24 +01:00
quirks.h	ALSA: usb-audio: Don't attempt to get Lifecam HD-5000 sample rate	2015-02-17 07:20:04 +01:00
stream.c	ALSA: USB-audio: Add quirk for Zoom R16/24 playback	2015-10-19 12:38:09 +02:00
stream.h	ALSA: snd-usb: re-order code	2011-09-14 17:07:02 +02:00
usbaudio.h	ALSA: usb-audio: prevent CH345 multiport output SysEx corruption	2015-11-16 08:59:24 +01:00