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authorChristoph Hellwig <hch@lst.de>2006-06-03 13:21:13 +0200
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-06-06 11:07:25 -0400
commit5d5ff44fe6775ccb922fd1f7d478b2ba9ca95068 (patch)
treed8569caefe1cb5ecced30929ef98d3e1fe642425 /drivers/usb/image/microtek.c
parente4a082c7c1f9a7b11fece6918e7ee5519b39ac46 (diff)
downloadop-kernel-dev-5d5ff44fe6775ccb922fd1f7d478b2ba9ca95068.zip
op-kernel-dev-5d5ff44fe6775ccb922fd1f7d478b2ba9ca95068.tar.gz
[SCSI] fix up request buffer reference in various scsi drivers
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>
Diffstat (limited to 'drivers/usb/image/microtek.c')
-rw-r--r--drivers/usb/image/microtek.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/usb/image/microtek.c b/drivers/usb/image/microtek.c
index 2a0e18a..b2bafc3 100644
--- a/drivers/usb/image/microtek.c
+++ b/drivers/usb/image/microtek.c
@@ -513,7 +513,7 @@ static void mts_do_sg (struct urb* transfer, struct pt_regs *regs)
mts_transfer_cleanup(transfer);
}
- sg = context->srb->buffer;
+ sg = context->srb->request_buffer;
context->fragment++;
mts_int_submit_urb(transfer,
context->data_pipe,
@@ -549,19 +549,19 @@ mts_build_transfer_context( Scsi_Cmnd *srb, struct mts_desc* desc )
desc->context.fragment = 0;
if (!srb->use_sg) {
- if ( !srb->bufflen ){
+ if ( !srb->request_bufflen ){
desc->context.data = NULL;
desc->context.data_length = 0;
return;
} else {
- desc->context.data = srb->buffer;
- desc->context.data_length = srb->bufflen;
+ desc->context.data = srb->request_buffer;
+ desc->context.data_length = srb->request_bufflen;
MTS_DEBUG("length = %d or %d\n",
srb->request_bufflen, srb->bufflen);
}
} else {
MTS_DEBUG("Using scatter/gather\n");
- sg = srb->buffer;
+ sg = srb->request_buffer;
desc->context.data = page_address(sg[0].page) + sg[0].offset;
desc->context.data_length = sg[0].length;
}
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