linux-toradex.git/sound/usb/6fire/comm.c, branch v3.2.62 Linux kernel for Apalis and Colibri modules ALSA: 6fire: fix DMA issues with URB transfer_buffer usage 2013-09-10T00:57:20+00:00 Jussi Kivilinna jussi.kivilinna@iki.fi 2013-08-06T11:53:24+00:00 4f440a7abb7c4b81192be3e192af8feec8e02ff3 commit ddb6b5a964371e8e52e696b2b258bda144c8bd3f upstream. Patch fixes 6fire not to use stack as URB transfer_buffer. URB buffers need to be DMA-able, which stack is not. Furthermore, transfer_buffer should not be allocated as part of larger device structure because DMA coherency issues and patch fixes this issue too. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Tested-by: Torsten Schenk <torsten.schenk@zoho.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit ddb6b5a964371e8e52e696b2b258bda144c8bd3f upstream.

Patch fixes 6fire not to use stack as URB transfer_buffer. URB buffers need to
be DMA-able, which stack is not. Furthermore, transfer_buffer should not be
allocated as part of larger device structure because DMA coherency issues and
patch fixes this issue too.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Tested-by: Torsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
ALSA: usb/6fire - Driver for TerraTec DMX 6Fire USB 2011-01-24T17:45:30+00:00 Torsten Schenk torsten.schenk@zoho.com 2011-01-24T17:45:30+00:00 c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 What is working: Everything except SPDIF - Hardware Master volume - PCM 44-192kHz@24 bits, 6 channels out, 4 channels in (analog) - MIDI in/out - firmware loading after cold start - phono/line switching Signed-off-by: Torsten Schenk <torsten.schenk@zoho.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> 
What is working: Everything except SPDIF
- Hardware Master volume
- PCM 44-192kHz@24 bits, 6 channels out, 4 channels in (analog)
- MIDI in/out
- firmware loading after cold start
- phono/line switching

Signed-off-by: Torsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>