/* * Driver for USB Mass Storage compliant devices * Debugging Functions Header File * * Current development and maintenance by: * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * * Initial work by: * (c) 1999 Michael Gee (michael@linuxspecific.com) * * This driver is based on the 'USB Mass Storage Class' document. This * describes in detail the protocol used to communicate with such * devices. Clearly, the designers had SCSI and ATAPI commands in * mind when they created this document. The commands are all very * similar to commands in the SCSI-II and ATAPI specifications. * * It is important to note that in a number of cases this class * exhibits class-specific exemptions from the USB specification. * Notably the usage of NAK, STALL and ACK differs from the norm, in * that they are used to communicate wait, failed and OK on commands. * * Also, for certain devices, the interrupt endpoint is used to convey * status of a command. * * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more * information about this driver. * * 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, or (at your option) any * later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef _DEBUG_H_ #define _DEBUG_H_ #include #define USB_STORAGE "usb-storage: " #ifdef CONFIG_USB_STORAGE_DEBUG void usb_stor_show_command(const struct us_data *us, struct scsi_cmnd *srb); void usb_stor_show_sense(const struct us_data *us, unsigned char key, unsigned char asc, unsigned char ascq); __printf(2, 3) void usb_stor_dbg(const struct us_data *us, const char *fmt, ...); #define US_DEBUG(x) x #else __printf(2, 3) static inline void _usb_stor_dbg(const struct us_data *us, const char *fmt, ...) { } #define usb_stor_dbg(us, fmt, ...) \ do { if (0) _usb_stor_dbg(us, fmt, ##__VA_ARGS__); } while (0) #define US_DEBUG(x) #endif #endif t'>

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arch/x86/kernel/process.c

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