diff options
| author | Boaz Harrosh <bharrosh@panasas.com> | 2007-07-29 22:24:09 +0300 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.localdomain> | 2007-08-04 09:13:28 -0500 |
| commit | 66acdb0309507950376393f2fb1c8e7482fb4d52 (patch) | |
| tree | 1829383c32d93fc8b4fe645ebf755b72d93ed0ce /drivers/scsi/aha152x.c | |
| parent | 0ceb47987d31f8529c60f1e802e0523fcde9492c (diff) | |
[SCSI] aha152x: Clean Reset path
What Reset code was doing: Save command's important/dangerous
Info on stack. NULL those members from scsi_cmnd.
Issue a Reset. wait for it to finish than restore members
and return.
What I do is save or NULL nothing. But use the "resetting"
hint in aha152x_internal_queue() to NULL out working members
and leave struct scsi_cmnd alone.
The indent here looks funny but it will change/drop in last
patch and it is clear this way what changed.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/aha152x.c')
| -rw-r--r-- | drivers/scsi/aha152x.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c index dc7d84bae96b..d7ca86f9d1f2 100644 --- a/drivers/scsi/aha152x.c +++ b/drivers/scsi/aha152x.c @@ -1022,6 +1022,14 @@ static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, struct completion *complete, SCp.buffer : next buffer SCp.buffers_residual : left buffers in list SCp.phase : current state of the command */ + + if(phase & resetting) { + SCpnt->SCp.ptr = NULL; + SCpnt->SCp.this_residual = 0; + SCpnt->resid = 0; + SCpnt->SCp.buffer = NULL; + SCpnt->SCp.buffers_residual = 0; + } else { if (SCpnt->use_sg) { SCpnt->SCp.buffer = (struct scatterlist *) SCpnt->request_buffer; SCpnt->SCp.ptr = SG_ADDRESS(SCpnt->SCp.buffer); @@ -1033,6 +1041,7 @@ static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, struct completion *complete, SCpnt->SCp.buffer = NULL; SCpnt->SCp.buffers_residual = 0; } + } DO_LOCK(flags); @@ -1150,9 +1159,6 @@ static int aha152x_device_reset(Scsi_Cmnd * SCpnt) DECLARE_COMPLETION(done); int ret, issued, disconnected; unsigned char old_cmd_len = SCpnt->cmd_len; - unsigned short old_use_sg = SCpnt->use_sg; - void *old_buffer = SCpnt->request_buffer; - unsigned old_bufflen = SCpnt->request_bufflen; unsigned long flags; unsigned long timeleft; @@ -1174,9 +1180,6 @@ static int aha152x_device_reset(Scsi_Cmnd * SCpnt) DO_UNLOCK(flags); SCpnt->cmd_len = 0; - SCpnt->use_sg = 0; - SCpnt->request_buffer = NULL; - SCpnt->request_bufflen = 0; aha152x_internal_queue(SCpnt, &done, resetting, reset_done); @@ -1189,9 +1192,6 @@ static int aha152x_device_reset(Scsi_Cmnd * SCpnt) } SCpnt->cmd_len = old_cmd_len; - SCpnt->use_sg = old_use_sg; - SCpnt->request_buffer = old_buffer; - SCpnt->request_bufflen = old_bufflen; DO_LOCK(flags); |