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[SCSI] fix up request buffer reference in various scsi drivers

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Various scsi drivers use scsi_cmnd.buffer and scsi_cmnd.bufflen in their
queuecommand functions.  Those fields are internal storage for the
midlayer only and are used to restore the original payload after
request_buffer and request_bufflen have been overwritten for EH.  Using
the buffer and bufflen fields means they do very broken things in error
handling.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Christoph Hellwig
2006-06-03 13:21:13 +02:00
committed by James Bottomley
parent e4a082c7c1
commit 5d5ff44fe6
17 changed files with 30 additions and 30 deletions
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2
drivers/scsi/in2000.c
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@@ -370,7 +370,7 @@ static int in2000_queuecommand(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *))
*/
if (cmd->use_sg) {
cmd->SCp.buffer = (struct scatterlist *) cmd->buffer;
cmd->SCp.buffer = (struct scatterlist *) cmd->request_buffer;
cmd->SCp.buffers_residual = cmd->use_sg - 1;
cmd->SCp.ptr = (char *) page_address(cmd->SCp.buffer->page) + cmd->SCp.buffer->offset;
cmd->SCp.this_residual = cmd->SCp.buffer->length;