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Commit 3bc6a261 authored by FUJITA Tomonori's avatar FUJITA Tomonori Committed by James Bottomley
Browse files

[SCSI] add scsi_build_sense_buffer helper function 



This adds scsi_build_sense_buffer, a simple helper function to build
sense data in a buffer.

Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent be3cb3d8

drivers/scsi/scsi_error.c

+28 −0
Original line number Diff line number Diff line
@@ -1993,3 +1993,31 @@ int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len, 
	}

}

EXPORT_SYMBOL(scsi_get_sense_info_fld);



/**

 * scsi_build_sense_buffer - build sense data in a buffer

 * @desc:	Sense format (non zero == descriptor format,

 * 		0 == fixed format)

 * @buf:	Where to build sense data

 * @key:	Sense key

 * @asc:	Additional sense code

 * @ascq:	Additional sense code qualifier

 *

 **/

void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq)

{

	if (desc) {

		buf[0] = 0x72;	/* descriptor, current */

		buf[1] = key;

		buf[2] = asc;

		buf[3] = ascq;

		buf[7] = 0;

	} else {

		buf[0] = 0x70;	/* fixed, current */

		buf[2] = key;

		buf[7] = 0xa;

		buf[12] = asc;

		buf[13] = ascq;

	}

}

EXPORT_SYMBOL(scsi_build_sense_buffer);

include/scsi/scsi_eh.h

+3 −1
Original line number Diff line number Diff line
@@ -58,6 +58,8 @@ extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len, 
extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,

				   u64 * info_out);



extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq);



/*

 * Reset request from external source

 */