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[SCSI] expose eh_timed_out to the host template

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It looks like megaraid_sas at least needs this to throttle its commands
as they begin to time out.  The code keeps the existing transport
template use of eh_timed_out (and allows the transport to override the
host if they both have this callback).

Signed-off-by: James Bottomley <[email protected]>
This commit is contained in:
James Bottomley 2007-03-16 17:44:41 -05:00 • committed by James Bottomley
commit 6c5f8ce1fb
2 changed files with 23 additions and 1 deletions
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13
include/scsi/scsi_host.h
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@ -325,6 +325,19 @@ struct scsi_host_template {
*/
int (*proc_info)(struct Scsi_Host *, char *, char **, off_t, int, int);
/*
* This is an optional routine that allows the transport to become
* involved when a scsi io timer fires. The return value tells the
* timer routine how to finish the io timeout handling:
* EH_HANDLED: I fixed the error, please complete the command
* EH_RESET_TIMER: I need more time, reset the timer and
* begin counting again
* EH_NOT_HANDLED Begin normal error recovery
*
* Status: OPTIONAL
*/
enum scsi_eh_timer_return (* eh_timed_out)(struct scsi_cmnd *);
/*
* suspend support
*/