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[SCSI] Document enhanced error codes
Document the various error codes returned on I/O failure. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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@ -716,6 +716,18 @@ void scsi_release_buffers(struct scsi_cmnd *cmd)
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}
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EXPORT_SYMBOL(scsi_release_buffers);
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/**
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* __scsi_error_from_host_byte - translate SCSI error code into errno
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* @cmd: SCSI command (unused)
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* @result: scsi error code
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*
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* Translate SCSI error code into standard UNIX errno.
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* Return values:
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* -ENOLINK temporary transport failure
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* -EREMOTEIO permanent target failure, do not retry
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* -EBADE permanent nexus failure, retry on other path
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* -EIO unspecified I/O error
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*/
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static int __scsi_error_from_host_byte(struct scsi_cmnd *cmd, int result)
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{
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int error = 0;
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