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[SCSI] use a completion in scsi_send_eh_cmnd

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scsi_send_eh_cmnd currently uses a semaphore and an overload of eh_timer
to either get a completion for a command for a timeout.
Switch to using a completion and wait_for_completion_timeout to simply
the code and not having to deal with the races ourselves.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Christoph Hellwig
2005-10-31 18:49:52 +01:00
committed by James Bottomley
parent 262eef663b
commit 7dfdc9a52b
3 changed files with 32 additions and 81 deletions
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5
include/scsi/scsi_host.h
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@@ -7,6 +7,7 @@
#include <linux/workqueue.h>
struct block_device;
struct completion;
struct module;
struct scsi_cmnd;
struct scsi_device;
@@ -467,8 +468,8 @@ struct Scsi_Host {
struct list_head eh_cmd_q;
struct task_struct * ehandler; /* Error recovery thread. */
struct semaphore * eh_action; /* Wait for specific actions on the
host. */
struct completion * eh_action; /* Wait for specific actions on the
host. */
wait_queue_head_t host_wait;
struct scsi_host_template *hostt;
struct scsi_transport_template *transportt;