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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152/* 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_DEBUGvoid 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