From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: [PATCH 1/4] scsi: Document enhanced error codes Date: Mon, 1 Jul 2013 15:16:23 +0200 Message-ID: <1372684586-41829-2-git-send-email-hare@suse.de> References: <1372684586-41829-1-git-send-email-hare@suse.de> Cc: linux-scsi@vger.kernel.org, Dave Chinner , Ren Mingxin , Theodore Tso , linux-fsdevel@vger.kernel.org, Hannes Reinecke To: James Bottomley Return-path: Received: from cantor2.suse.de ([195.135.220.15]:57330 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753669Ab3GANQd (ORCPT ); Mon, 1 Jul 2013 09:16:33 -0400 In-Reply-To: <1372684586-41829-1-git-send-email-hare@suse.de> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Document the various error codes returned on I/O failure. Signed-off-by: Hannes Reinecke --- drivers/scsi/scsi_lib.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 86d5220..d3fc50f 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -700,6 +700,18 @@ void scsi_release_buffers(struct scsi_cmnd *cmd) } EXPORT_SYMBOL(scsi_release_buffers); +/** + * __scsi_error_from_host_byte - translate SCSI error code into errno + * @cmd: SCSI command (unused) + * @result: scsi error code + * + * Translate SCSI error code into standard UNIX errno. + * Return values: + * -ENOLINK temporary transport failure + * -EREMOTEIO permanent target failure, do not retry + * -EBADE permanent nexus failure, retry on other path + * -EIO unspecified I/O error + */ static int __scsi_error_from_host_byte(struct scsi_cmnd *cmd, int result) { int error = 0; -- 1.7.12.4