[SCSI] convert sr to scsi_execute_req

This follows almost the identical model to sd, except that there's one
ioctl which returns raw sense data, so it had to use scsi_execute()
instead.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

2 files changed, 37 insertions, 74 deletions

diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 8cbe6e004187..39fc5b0fbc18 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -50,10 +50,10 @@
 #include <scsi/scsi_dbg.h>
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_driver.h>
+#include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_eh.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_ioctl.h>    /* For the door lock/unlock commands */
-#include <scsi/scsi_request.h>
 
 #include "scsi_logging.h"
 #include "sr.h"
@@ -658,39 +658,27 @@ static void get_sectorsize(struct scsi_cd *cd)
         unsigned char *buffer;
         int the_result, retries = 3;
         int sector_size;
-        struct scsi_request *SRpnt = NULL;
         request_queue_t *queue;
 
         buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
         if (!buffer)
                 goto Enomem;
-        SRpnt = scsi_allocate_request(cd->device, GFP_KERNEL);
-        if (!SRpnt)
-                goto Enomem;
 
         do {
                 cmd[0] = READ_CAPACITY;
                 memset((void *) &cmd[1], 0, 9);
-                /* Mark as really busy */
-                SRpnt->sr_request->rq_status = RQ_SCSI_BUSY;
-                SRpnt->sr_cmd_len = 0;
-
                 memset(buffer, 0, 8);
 
                 /* Do the command and wait.. */
-                SRpnt->sr_data_direction = DMA_FROM_DEVICE;
-                scsi_wait_req(SRpnt, (void *) cmd, (void *) buffer,
-                              8, SR_TIMEOUT, MAX_RETRIES);
+                the_result = scsi_execute_req(cd->device, cmd, DMA_FROM_DEVICE,
+                                              buffer, 8, NULL, SR_TIMEOUT,
+                                              MAX_RETRIES);
 
-                the_result = SRpnt->sr_result;
                 retries--;
 
         } while (the_result && retries);
 
 
-        scsi_release_request(SRpnt);
-        SRpnt = NULL;
-
         if (the_result) {
                 cd->capacity = 0x1fffff;
                 sector_size = 2048;     /* A guess, just in case */
@@ -750,8 +738,6 @@ Enomem:
         cd->capacity = 0x1fffff;
         sector_size = 2048;     /* A guess, just in case */
         cd->needs_sector_size = 1;
-        if (SRpnt)
-                scsi_release_request(SRpnt);
         goto out;
 }
 
@@ -759,8 +745,8 @@ static void get_capabilities(struct scsi_cd *cd)
 {
         unsigned char *buffer;
         struct scsi_mode_data data;
-        struct scsi_request *SRpnt;
         unsigned char cmd[MAX_COMMAND_SIZE];
+        struct scsi_sense_hdr sshdr;
         unsigned int the_result;
         int retries, rc, n;
 
@@ -776,19 +762,11 @@ static void get_capabilities(struct scsi_cd *cd)
                 ""
         };
 
-        /* allocate a request for the TEST_UNIT_READY */
-        SRpnt = scsi_allocate_request(cd->device, GFP_KERNEL);
-        if (!SRpnt) {
-                printk(KERN_WARNING "(get_capabilities:) Request allocation "
-                       "failure.\n");
-                return;
-        }
 
         /* allocate transfer buffer */
         buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
         if (!buffer) {
                 printk(KERN_ERR "sr: out of memory.\n");
-                scsi_release_request(SRpnt);
                 return;
         }
 
@@ -800,20 +778,15 @@ static void get_capabilities(struct scsi_cd *cd)
                 memset((void *)cmd, 0, MAX_COMMAND_SIZE);
                 cmd[0] = TEST_UNIT_READY;
 
-                SRpnt->sr_cmd_len = 0;
-                SRpnt->sr_sense_buffer[0] = 0;
-                SRpnt->sr_sense_buffer[2] = 0;
-                SRpnt->sr_data_direction = DMA_NONE;
-
-                scsi_wait_req (SRpnt, (void *) cmd, buffer,
-                               0, SR_TIMEOUT, MAX_RETRIES);
+                the_result = scsi_execute_req (cd->device, cmd, DMA_NONE, NULL,
+                                               0, &sshdr, SR_TIMEOUT,
+                                               MAX_RETRIES);
 
-                the_result = SRpnt->sr_result;
                 retries++;
         } while (retries < 5 && 
                  (!scsi_status_is_good(the_result) ||
-                  ((driver_byte(the_result) & DRIVER_SENSE) &&
-                   SRpnt->sr_sense_buffer[2] == UNIT_ATTENTION)));
+                  (scsi_sense_valid(&sshdr) &&
+                   sshdr.sense_key == UNIT_ATTENTION)));
 
         /* ask for mode page 0x2a */
         rc = scsi_mode_sense(cd->device, 0, 0x2a, buffer, 128,
@@ -825,7 +798,6 @@ static void get_capabilities(struct scsi_cd *cd)
                 cd->cdi.mask |= (CDC_CD_R | CDC_CD_RW | CDC_DVD_R |
                                          CDC_DVD | CDC_DVD_RAM |
                                          CDC_SELECT_DISC | CDC_SELECT_SPEED);
-                scsi_release_request(SRpnt);
                 kfree(buffer);
                 printk("%s: scsi-1 drive\n", cd->cdi.name);
                 return;
@@ -885,7 +857,6 @@ static void get_capabilities(struct scsi_cd *cd)
                 cd->device->writeable = 1;
         }
 
-        scsi_release_request(SRpnt);
         kfree(buffer);
 }
 
diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c
index 82d68fdb1548..6e45ac3c43c5 100644
--- a/drivers/scsi/sr_ioctl.c
+++ b/drivers/scsi/sr_ioctl.c
@@ -17,7 +17,7 @@
 #include <scsi/scsi_eh.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_ioctl.h>
-#include <scsi/scsi_request.h>
+#include <scsi/scsi_cmnd.h>
 
 #include "sr.h"
 
@@ -84,41 +84,37 @@ static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti
 
 int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc)
 {
-        struct scsi_request *SRpnt;
         struct scsi_device *SDev;
-        struct request *req;
+        struct scsi_sense_hdr sshdr;
         int result, err = 0, retries = 0;
+        struct request_sense *sense = cgc->sense;
 
         SDev = cd->device;
-        SRpnt = scsi_allocate_request(SDev, GFP_KERNEL);
-        if (!SRpnt) {
-                printk(KERN_ERR "Unable to allocate SCSI request in sr_do_ioctl");
-                err = -ENOMEM;
-                goto out;
-        }
-        SRpnt->sr_data_direction = cgc->data_direction;
+
+        if (!sense) {
+                sense = kmalloc(sizeof(*sense), GFP_KERNEL);
+                if (!sense) {
+                        err = -ENOMEM;
+                        goto out;
+                }
+        }
 
       retry:
         if (!scsi_block_when_processing_errors(SDev)) {
                 err = -ENODEV;
-                goto out_free;
+                goto out;
         }
 
-        scsi_wait_req(SRpnt, cgc->cmd, cgc->buffer, cgc->buflen,
-                      cgc->timeout, IOCTL_RETRIES);
-
-        req = SRpnt->sr_request;
-        if (SRpnt->sr_buffer && req->buffer && SRpnt->sr_buffer != req->buffer) {
-                memcpy(req->buffer, SRpnt->sr_buffer, SRpnt->sr_bufflen);
-                kfree(SRpnt->sr_buffer);
-                SRpnt->sr_buffer = req->buffer;
-        }
+        memset(sense, 0, sizeof(*sense));
+        result = scsi_execute(SDev, cgc->cmd, cgc->data_direction,
+                              cgc->buffer, cgc->buflen, (char *)sense,
+                              cgc->timeout, IOCTL_RETRIES, 0);
 
-        result = SRpnt->sr_result;
+        scsi_normalize_sense((char *)sense, sizeof(*sense), &sshdr);
 
         /* Minimal error checking.  Ignore cases we know about, and report the rest. */
         if (driver_byte(result) != 0) {
-                switch (SRpnt->sr_sense_buffer[2] & 0xf) {
+                switch (sshdr.sense_key) {
                 case UNIT_ATTENTION:
                         SDev->changed = 1;
                         if (!cgc->quiet)
@@ -128,8 +124,8 @@ int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc)
                         err = -ENOMEDIUM;
                         break;
                 case NOT_READY: /* This happens if there is no disc in drive */
-                        if (SRpnt->sr_sense_buffer[12] == 0x04 &&
-                            SRpnt->sr_sense_buffer[13] == 0x01) {
+                        if (sshdr.asc == 0x04 &&
+                            sshdr.ascq == 0x01) {
                                 /* sense: Logical unit is in process of becoming ready */
                                 if (!cgc->quiet)
                                         printk(KERN_INFO "%s: CDROM not ready yet.\n", cd->cdi.name);
@@ -146,37 +142,33 @@ int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc)
                         if (!cgc->quiet)
                                 printk(KERN_INFO "%s: CDROM not ready.  Make sure there is a disc in the drive.\n", cd->cdi.name);
 #ifdef DEBUG
-                        scsi_print_req_sense("sr", SRpnt);
+                        scsi_print_sense_hdr("sr", &sshdr);
 #endif
                         err = -ENOMEDIUM;
                         break;
                 case ILLEGAL_REQUEST:
                         err = -EIO;
-                        if (SRpnt->sr_sense_buffer[12] == 0x20 &&
-                            SRpnt->sr_sense_buffer[13] == 0x00)
+                        if (sshdr.asc == 0x20 &&
+                            sshdr.ascq == 0x00)
                                 /* sense: Invalid command operation code */
                                 err = -EDRIVE_CANT_DO_THIS;
 #ifdef DEBUG
                         __scsi_print_command(cgc->cmd);
-                        scsi_print_req_sense("sr", SRpnt);
+                        scsi_print_sense_hdr("sr", &sshdr);
 #endif
                         break;
                 default:
                         printk(KERN_ERR "%s: CDROM (ioctl) error, command: ", cd->cdi.name);
                         __scsi_print_command(cgc->cmd);
-                        scsi_print_req_sense("sr", SRpnt);
+                        scsi_print_sense_hdr("sr", &sshdr);
                         err = -EIO;
                 }
         }
 
-        if (cgc->sense)
-                memcpy(cgc->sense, SRpnt->sr_sense_buffer, sizeof(*cgc->sense));
-
         /* Wake up a process waiting for device */
-      out_free:
-        scsi_release_request(SRpnt);
-        SRpnt = NULL;
       out:
+        if (!cgc->sense)
+                kfree(sense);
         cgc->stat = err;
         return err;
 }