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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2006-01-20 01:05:00 +0100
committerJames Bottomley <jejb@mulgrave.(none)>2006-01-26 08:11:13 -0500
commit1d12d98d284665c37b75b9538916b5fbb8fcde37 (patch)
tree73c068acedcc2a3769c86d8a5cb3d21150a451bb
parent2b541f8f77fd339e4c5c5cbe8549b52445012704 (diff)
[SCSI] dc395x: "fix" virt_addr calculation on AUTO_REQSENSE
The patch below "fixes" calculation of the virt_addr for the AUTO_REQSENSE case. I put "fixes" in quotes because the real fix would be to completely remove it, but that's beyond the scope of this patch. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
-rw-r--r--drivers/scsi/dc395x.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index c8a32cf47d7..cbf825263f3 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -246,6 +246,7 @@ struct ScsiReqBlk {
* total_xfer_length in xferred. These values are restored in
* pci_unmap_srb_sense. This is the only place xferred is used.
*/
+ unsigned char *virt_addr_req; /* Saved virtual address of the request buffer */
u32 xferred; /* Saved copy of total_xfer_length */
u16 state;
@@ -2017,7 +2018,7 @@ static void sg_update_list(struct ScsiReqBlk *srb, u32 left)
sg_verify_length(srb);
/* we need the corresponding virtual address */
- if (!segment) {
+ if (!segment || (srb->flag & AUTO_REQSENSE)) {
srb->virt_addr += xferred;
return;
}
@@ -3318,6 +3319,7 @@ static void pci_unmap_srb_sense(struct AdapterCtlBlk *acb,
srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].address;
srb->segment_x[0].length =
srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].length;
+ srb->virt_addr = srb->virt_addr_req;
}
@@ -3711,6 +3713,8 @@ static void request_sense(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
srb->xferred = srb->total_xfer_length;
/* srb->segment_x : a one entry of S/G list table */
srb->total_xfer_length = sizeof(cmd->sense_buffer);
+ srb->virt_addr_req = srb->virt_addr;
+ srb->virt_addr = cmd->sense_buffer;
srb->segment_x[0].length = sizeof(cmd->sense_buffer);
/* Map sense buffer */
srb->segment_x[0].address =