linux/drivers/usb/storage/debug.h
Nishad Kamdar 59b4e0cd4d USB: Storage: Use the correct style for SPDX License Identifier
This patch corrects the SPDX License Identifier style in
header files related to USB Storage driver configuration.
For C header files Documentation/process/license-rules.rst
mandates C-like comments (opposed to C source files where
C++ style should be used).

Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Link: https://lore.kernel.org/r/20200419131653.GA6611@nishad
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-23 15:28:14 +02:00

52 lines
1.6 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.
*/
#ifndef _DEBUG_H_
#define _DEBUG_H_
#include <linux/kernel.h>
#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