[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>
diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index c8a32cf..cbf8252 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -246,6 +246,7 @@
* 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 @@
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 @@
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 @@
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 =