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author | Mike Christie <michaelc@cs.wisc.edu> | 2005-11-11 05:30:27 -0600 |
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committer | James Bottomley <jejb@mulgrave.(none)> | 2005-12-14 19:03:35 -0800 |
commit | 6e68af666f5336254b5715dca591026b7324499a (patch) | |
tree | 5640209b6e2b75659149460f14531cfecffe2f5d /drivers/scsi/scsi_error.c | |
parent | 6e39b69e7ea9205c5f80aeac3ef999ab8fb1a4cc (diff) | |
download | op-kernel-dev-6e68af666f5336254b5715dca591026b7324499a.zip op-kernel-dev-6e68af666f5336254b5715dca591026b7324499a.tar.gz |
[SCSI] Convert SCSI mid-layer to scsi_execute_async
Add scsi helpers to create really-large-requests and convert
scsi-ml to scsi_execute_async().
Per Jens's previous comments, I placed this function in scsi_lib.c.
I made it follow all the queue's limits - I think I did at least :), so
I removed the warning on the function header.
I think the scsi_execute_* functions should eventually take a request_queue
and be placed some place where the dm-multipath hw_handler can use them
if that failover code is going to stay in the kernel. That conversion
patch will be sent in another mail though.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi_error.c')
-rw-r--r-- | drivers/scsi/scsi_error.c | 47 |
1 files changed, 9 insertions, 38 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 18c5d25..53ea62d 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -1315,23 +1315,6 @@ int scsi_decide_disposition(struct scsi_cmnd *scmd) } /** - * scsi_eh_lock_done - done function for eh door lock request - * @scmd: SCSI command block for the door lock request - * - * Notes: - * We completed the asynchronous door lock request, and it has either - * locked the door or failed. We must free the command structures - * associated with this request. - **/ -static void scsi_eh_lock_done(struct scsi_cmnd *scmd) -{ - struct scsi_request *sreq = scmd->sc_request; - - scsi_release_request(sreq); -} - - -/** * scsi_eh_lock_door - Prevent medium removal for the specified device * @sdev: SCSI device to prevent medium removal * @@ -1353,29 +1336,17 @@ static void scsi_eh_lock_done(struct scsi_cmnd *scmd) **/ static void scsi_eh_lock_door(struct scsi_device *sdev) { - struct scsi_request *sreq = scsi_allocate_request(sdev, GFP_KERNEL); + unsigned char cmnd[MAX_COMMAND_SIZE]; - if (unlikely(!sreq)) { - printk(KERN_ERR "%s: request allocate failed," - "prevent media removal cmd not sent\n", __FUNCTION__); - return; - } + cmnd[0] = ALLOW_MEDIUM_REMOVAL; + cmnd[1] = 0; + cmnd[2] = 0; + cmnd[3] = 0; + cmnd[4] = SCSI_REMOVAL_PREVENT; + cmnd[5] = 0; - sreq->sr_cmnd[0] = ALLOW_MEDIUM_REMOVAL; - sreq->sr_cmnd[1] = 0; - sreq->sr_cmnd[2] = 0; - sreq->sr_cmnd[3] = 0; - sreq->sr_cmnd[4] = SCSI_REMOVAL_PREVENT; - sreq->sr_cmnd[5] = 0; - sreq->sr_data_direction = DMA_NONE; - sreq->sr_bufflen = 0; - sreq->sr_buffer = NULL; - sreq->sr_allowed = 5; - sreq->sr_done = scsi_eh_lock_done; - sreq->sr_timeout_per_command = 10 * HZ; - sreq->sr_cmd_len = COMMAND_SIZE(sreq->sr_cmnd[0]); - - scsi_insert_special_req(sreq, 1); + scsi_execute_async(sdev, cmnd, DMA_NONE, NULL, 0, 0, 10 * HZ, + 5, NULL, NULL, GFP_KERNEL); } |