/* * Linux driver for TerraTec DMX 6Fire USB * * Author: Torsten Schenk * Created: Jan 01, 2011 * Copyright: (C) Torsten Schenk * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #ifndef USB6FIRE_PCM_H #define USB6FIRE_PCM_H #include #include #include "common.h" enum /* settings for pcm */ { /* maximum of EP_W_MAX_PACKET_SIZE[] (see firmware.c) */ PCM_N_URBS = 16, PCM_N_PACKETS_PER_URB = 8, PCM_MAX_PACKET_SIZE = 604 }; struct pcm_urb { struct sfire_chip *chip; /* BEGIN DO NOT SEPARATE */ struct urb instance; struct usb_iso_packet_descriptor packets[PCM_N_PACKETS_PER_URB]; /* END DO NOT SEPARATE */ u8 *buffer; struct pcm_urb *peer; }; struct pcm_substream { spinlock_t lock; struct snd_pcm_substream *instance; bool active; snd_pcm_uframes_t dma_off; /* current position in alsa dma_area */ snd_pcm_uframes_t period_off; /* current position in current period */ }; struct pcm_runtime { struct sfire_chip *chip; struct snd_pcm *instance; struct pcm_substream playback; struct pcm_substream capture; bool panic; /* if set driver won't do anymore pcm on device */ struct pcm_urb in_urbs[PCM_N_URBS]; struct pcm_urb out_urbs[PCM_N_URBS]; int in_packet_size; int out_packet_size; int in_n_analog; /* number of analog channels soundcard sends */ int out_n_analog; /* number of analog channels soundcard receives */ struct mutex stream_mutex; u8 stream_state; /* one of STREAM_XXX (pcm.c) */ u8 rate; /* one of PCM_RATE_XXX */ wait_queue_head_t stream_wait_queue; bool stream_wait_cond; }; int usb6fire_pcm_init(struct sfire_chip *chip); void usb6fire_pcm_abort(struct sfire_chip *chip); void usb6fire_pcm_destroy(struct sfire_chip *chip); #endif /* USB6FIRE_PCM_H */ t/sound/pci/pcxhr/pcxhr_mixer.c?id=eeeefd41843218c55a8782a6920f044d9bf6207a'>commitdiff
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authorChristoph Hellwig <hch@lst.de>2017-02-05 18:10:35 +0100
committerJens Axboe <axboe@fb.com>2017-02-06 09:34:46 -0700
commiteeeefd41843218c55a8782a6920f044d9bf6207a (patch)
treec342eac46626e62745aa8e1a982626efca8b121d /sound/pci/pcxhr/pcxhr_mixer.c
parentc14024dbb156c8392908aaa822097d27c6af8ec8 (diff)
block: don't try Write Same from __blkdev_issue_zeroout
Write Same can return an error asynchronously if it turns out the underlying SCSI device does not support Write Same, which makes a proper fallback to other methods in __blkdev_issue_zeroout impossible. Thus only issue a Write Same from blkdev_issue_zeroout an don't try it at all from __blkdev_issue_zeroout as a non-invasive workaround. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Fixes: e73c23ff ("block: add async variant of blkdev_issue_zeroout") Tested-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'sound/pci/pcxhr/pcxhr_mixer.c')