convert ch to use scsi_execute_req

I also tinkered with it's sense recognition routines to make them take scsi_sense_hdr structures instead of raw sense data.

James

@@ -31,7 +31,7 @@
 #include <scsi/scsi_ioctl.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_device.h>
-#include <scsi/scsi_request.h>
+#include <scsi/scsi_eh.h>
 #include <scsi/scsi_dbg.h>
 
 #define CH_DT_MAX       16

@@ -181,17 +181,17 @@ static struct {
 
 /* -------------------------------------------------------------------

*/

-static int ch_find_errno(unsigned char *sense_buffer) +static int ch_find_errno(struct scsi_sense_hdr *sshdr)
{
int i,errno = 0;

/* Check to see if additional sense information is available */
- if (sense_buffer[7] > 5 &&
- sense_buffer[12] != 0) {
+ if (scsi_sense_valid(sshdr) &&
+ sshdr->asc != 0) {
for (i = 0; err[i].errno != 0; i++) {
- if (err[i].sense == sense_buffer[ 2] &&

-			    err[i].asc   == sense_buffer[12] &&
-			    err[i].ascq  == sense_buffer[13]) {
+			if (err[i].sense == sshdr->sense_key &&
+			    err[i].asc   == sshdr->asc &&
+			    err[i].ascq  == sshdr->ascq) {

errno = -err[i].errno; break;
}
@@ -207,13 +207,9 @@ ch_do_scsi(scsi_changer *ch, unsigned ch
void *buffer, unsigned buflength,
enum dma_data_direction direction)
{
- int errno, retries = 0, timeout;
- struct scsi_request *sr;
+ int errno, retries = 0, timeout, result;
+ struct scsi_sense_hdr sshdr;

- sr = scsi_allocate_request(ch->device, GFP_KERNEL);
- if (NULL == sr)
- return -ENOMEM;
-
timeout = (cmd[0] == INITIALIZE_ELEMENT_STATUS)
? timeout_init : timeout_move;

@@ -224,16 +220,17 @@ ch_do_scsi(scsi_changer *ch, unsigned ch
__scsi_print_command(cmd);
}

-        scsi_wait_req(sr, cmd, buffer, buflength,
-		      timeout * HZ, MAX_RETRIES);
+        result = scsi_execute_req(ch->device, cmd, direction, buffer,

+ buflength, &sshdr, timeout * HZ,
+ MAX_RETRIES);

- dprintk("result: 0x%x\n",sr->sr_result);
- if (driver_byte(sr->sr_result) & DRIVER_SENSE) {
+ dprintk("result: 0x%x\n",result);
+ if (driver_byte(result) & DRIVER_SENSE) {
if (debug)
- scsi_print_req_sense(ch->name, sr);
- errno = ch_find_errno(sr->sr_sense_buffer);
+ scsi_print_sense_hdr(ch->name, &sshdr);
+ errno = ch_find_errno(&sshdr);

- switch(sr->sr_sense_buffer[2] & 0xf) {
+ switch(sshdr.sense_key) {
case UNIT_ATTENTION:
ch->unit_attention = 1;
if (retries++ < 3)
@@ -241,7 +238,6 @@ ch_do_scsi(scsi_changer *ch, unsigned ch
break;
}
}
- scsi_release_request(sr);
return errno;
}