// 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> #define USB_STORAGE "usb-storage: " #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