mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 21:24:00 +08:00
ddb6b5a964
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. Cc: stable@vger.kernel.org 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>
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/*
|
|
* Linux driver for TerraTec DMX 6Fire USB
|
|
*
|
|
* Author: Torsten Schenk <torsten.schenk@zoho.com>
|
|
* 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_COMM_H
|
|
#define USB6FIRE_COMM_H
|
|
|
|
#include "common.h"
|
|
|
|
enum /* settings for comm */
|
|
{
|
|
COMM_RECEIVER_BUFSIZE = 64,
|
|
};
|
|
|
|
struct comm_runtime {
|
|
struct sfire_chip *chip;
|
|
|
|
struct urb receiver;
|
|
u8 *receiver_buffer;
|
|
|
|
u8 serial; /* urb serial */
|
|
|
|
void (*init_urb)(struct comm_runtime *rt, struct urb *urb, u8 *buffer,
|
|
void *context, void(*handler)(struct urb *urb));
|
|
/* writes control data to the device */
|
|
int (*write8)(struct comm_runtime *rt, u8 request, u8 reg, u8 value);
|
|
int (*write16)(struct comm_runtime *rt, u8 request, u8 reg,
|
|
u8 vh, u8 vl);
|
|
};
|
|
|
|
int usb6fire_comm_init(struct sfire_chip *chip);
|
|
void usb6fire_comm_abort(struct sfire_chip *chip);
|
|
void usb6fire_comm_destroy(struct sfire_chip *chip);
|
|
#endif /* USB6FIRE_COMM_H */
|
|
|