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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2006-06-09 22:25:23 +0200
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-06-10 10:38:24 -0500
commit9dc399de0840a478adb71278becf598d3ab3aacc (patch)
tree3fed70eebb84f14f75b813843a887408dfe67580 /drivers/scsi/dc395x.c
parentede1e6f8b43246a9796583346839669b1f4b77d4 (diff)
downloadop-kernel-dev-9dc399de0840a478adb71278becf598d3ab3aacc.zip
op-kernel-dev-9dc399de0840a478adb71278becf598d3ab3aacc.tar.gz
[SCSI] Remove last page_address from dc395x.c
Dynamically map scattergather buffer instead of using page_address(). Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/dc395x.c')
-rw-r--r--drivers/scsi/dc395x.c59
1 files changed, 35 insertions, 24 deletions
diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index 0c56095..1832452 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -3347,21 +3347,14 @@ static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
{
u8 tempcnt, status;
struct scsi_cmnd *cmd = srb->cmd;
- struct ScsiInqData *ptr;
enum dma_data_direction dir = cmd->sc_data_direction;
-
- if (cmd->use_sg) {
- struct scatterlist* sg = (struct scatterlist *)cmd->request_buffer;
- ptr = (struct ScsiInqData *)(page_address(sg->page) + sg->offset);
- } else {
- ptr = (struct ScsiInqData *)(cmd->request_buffer);
- }
+ int ckc_only = 1;
dprintkdbg(DBG_1, "srb_done: (pid#%li) <%02i-%i>\n", srb->cmd->pid,
srb->cmd->device->id, srb->cmd->device->lun);
- dprintkdbg(DBG_SG, "srb_done: srb=%p sg=%i(%i/%i) buf=%p addr=%p\n",
+ dprintkdbg(DBG_SG, "srb_done: srb=%p sg=%i(%i/%i) buf=%p\n",
srb, cmd->use_sg, srb->sg_index, srb->sg_count,
- cmd->request_buffer, ptr);
+ cmd->request_buffer);
status = srb->target_status;
if (srb->flag & AUTO_REQSENSE) {
dprintkdbg(DBG_0, "srb_done: AUTO_REQSENSE1\n");
@@ -3500,29 +3493,47 @@ static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
srb->segment_x[0].address,
cmd->request_bufflen, dir);
}
-
- if ((cmd->result & RES_DID) == 0 && cmd->cmnd[0] == INQUIRY
- && cmd->cmnd[2] == 0 && cmd->request_bufflen >= 8
- && dir != PCI_DMA_NONE && ptr && (ptr->Vers & 0x07) >= 2)
- dcb->inquiry7 = ptr->Flags;
+ ckc_only = 0;
/* Check Error Conditions */
ckc_e:
+ if (cmd->cmnd[0] == INQUIRY) {
+ unsigned char *base = NULL;
+ struct ScsiInqData *ptr;
+ unsigned long flags = 0;
+
+ if (cmd->use_sg) {
+ struct scatterlist* sg = (struct scatterlist *)cmd->request_buffer;
+ size_t offset = 0, len = sizeof(struct ScsiInqData);
+
+ local_irq_save(flags);
+ base = scsi_kmap_atomic_sg(sg, cmd->use_sg, &offset, &len);
+ ptr = (struct ScsiInqData *)(base + offset);
+ } else
+ ptr = (struct ScsiInqData *)(cmd->request_buffer);
+
+ if (!ckc_only && (cmd->result & RES_DID) == 0
+ && cmd->cmnd[2] == 0 && cmd->request_bufflen >= 8
+ && dir != PCI_DMA_NONE && ptr && (ptr->Vers & 0x07) >= 2)
+ dcb->inquiry7 = ptr->Flags;
+
/*if( srb->cmd->cmnd[0] == INQUIRY && */
/* (host_byte(cmd->result) == DID_OK || status_byte(cmd->result) & CHECK_CONDITION) ) */
- if (cmd->cmnd[0] == INQUIRY && (cmd->result == (DID_OK << 16)
- || status_byte(cmd->
- result) &
- CHECK_CONDITION)) {
-
- if (!dcb->init_tcq_flag) {
- add_dev(acb, dcb, ptr);
- dcb->init_tcq_flag = 1;
+ if ((cmd->result == (DID_OK << 16)
+ || status_byte(cmd->result) &
+ CHECK_CONDITION)) {
+ if (!dcb->init_tcq_flag) {
+ add_dev(acb, dcb, ptr);
+ dcb->init_tcq_flag = 1;
+ }
}
+ if (cmd->use_sg) {
+ scsi_kunmap_atomic_sg(base);
+ local_irq_restore(flags);
+ }
}
-
/* Here is the info for Doug Gilbert's sg3 ... */
cmd->resid = srb->total_xfer_length;
/* This may be interpreted by sb. or not ... */
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