/* * 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 */ ate-remove&id=66cd794e3c30b8af3b6befe42a378557efb3114a'>commitdiff
path: root/sound/soc/sh
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authorAl Viro <viro@zeniv.linux.org.uk>2016-08-17 16:02:32 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2016-09-09 19:34:32 -0400
commit2561d309dfd1555e781484af757ed0115035ddb3 (patch)
tree6d96d75a4e35e2280edc0e47af670a31b0da4660 /Documentation
parent694d0d0bb2030d2e36df73e2d23d5770511dbc8d (diff)
alpha: fix copy_from_user()
it should clear the destination even when access_ok() fails. Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'Documentation')