linux/drivers/usb/storage/debug.h
Greg Kroah-Hartman 7cb2d993c4 USB: storage: Remove redundant license text
Now that the SPDX tag is in all USB files, that identifies the license
in a specific and legally-defined manner.  So the extra GPL text wording
can be removed as it is no longer needed at all.

This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text.  And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.

No copyright headers or other non-license-description text was removed.

Cc: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-04 11:55:38 +01:00

57 lines
1.8 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* 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.
*/
#ifndef _DEBUG_H_
#define _DEBUG_H_
#include <linux/kernel.h>
#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