1 files changed, 2 insertions, 119 deletions

diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index d0c71da58e85..ca796b9d737b 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -433,7 +433,6 @@ static void ahc_linux_release_simq(u_long arg);
 static void ahc_linux_dev_timed_unfreeze(u_long arg);
 static int  ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag);
 static void ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc);
-static void ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc);
 static u_int ahc_linux_user_tagdepth(struct ahc_softc *ahc,
                                      struct ahc_devinfo *devinfo);
 static void ahc_linux_device_queue_depth(struct ahc_softc *ahc,
@@ -454,29 +453,17 @@ static void ahc_linux_setup_tag_info_global(char *p);
 static aic_option_callback_t ahc_linux_setup_tag_info;
 static int  aic7xxx_setup(char *s);
 static int  ahc_linux_next_unit(void);
-static struct ahc_cmd *ahc_linux_run_complete_queue(struct ahc_softc *ahc);
 
 /********************************* Inlines ************************************/
 static __inline struct ahc_linux_device*
                      ahc_linux_get_device(struct ahc_softc *ahc, u_int channel,
                                           u_int target, u_int lun, int alloc);
-static __inline void ahc_schedule_completeq(struct ahc_softc *ahc);
 static __inline void ahc_linux_unmap_scb(struct ahc_softc*, struct scb*);
 
 static __inline int ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
                                       struct ahc_dma_seg *sg,
                                       dma_addr_t addr, bus_size_t len);
 
-static __inline void
-ahc_schedule_completeq(struct ahc_softc *ahc)
-{
-        if ((ahc->platform_data->flags & AHC_RUN_CMPLT_Q_TIMER) == 0) {
-                ahc->platform_data->flags |= AHC_RUN_CMPLT_Q_TIMER;
-                ahc->platform_data->completeq_timer.expires = jiffies;
-                add_timer(&ahc->platform_data->completeq_timer);
-        }
-}
-
 static __inline struct ahc_linux_device*
 ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target,
                      u_int lun, int alloc)
@@ -503,42 +490,6 @@ ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target,
         return (dev);
 }
 
-#define AHC_LINUX_MAX_RETURNED_ERRORS 4
-static struct ahc_cmd *
-ahc_linux_run_complete_queue(struct ahc_softc *ahc)
-{
-        struct  ahc_cmd *acmd;
-        int     with_errors;
-
-        with_errors = 0;
-        while ((acmd = TAILQ_FIRST(&ahc->platform_data->completeq)) != NULL) {
-                struct scsi_cmnd *cmd;
-
-                if (with_errors > AHC_LINUX_MAX_RETURNED_ERRORS) {
-                        /*
-                         * Linux uses stack recursion to requeue
-                         * commands that need to be retried.  Avoid
-                         * blowing out the stack by "spoon feeding"
-                         * commands that completed with error back
-                         * the operating system in case they are going
-                         * to be retried. "ick"
-                         */
-                        ahc_schedule_completeq(ahc);
-                        break;
-                }
-                TAILQ_REMOVE(&ahc->platform_data->completeq,
-                             acmd, acmd_links.tqe);
-                cmd = &acmd_scsi_cmd(acmd);
-                cmd->host_scribble = NULL;
-                if (ahc_cmd_get_transaction_status(cmd) != DID_OK
-                 || (cmd->result & 0xFF) != SCSI_STATUS_OK)
-                        with_errors++;
-
-                cmd->scsi_done(cmd);
-        }
-        return (acmd);
-}
-
 static __inline void
 ahc_linux_unmap_scb(struct ahc_softc *ahc, struct scb *scb)
 {
@@ -856,7 +807,6 @@ ahc_linux_bus_reset(struct scsi_cmnd *cmd)
         ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
         found = ahc_reset_channel(ahc, cmd->device->channel + 'A',
                                   /*initiate reset*/TRUE);
-        ahc_linux_run_complete_queue(ahc);
 
         if (bootverbose)
                 printf("%s: SCSI bus reset delivered. "
@@ -1331,13 +1281,8 @@ ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
         if (ahc->platform_data == NULL)
                 return (ENOMEM);
         memset(ahc->platform_data, 0, sizeof(struct ahc_platform_data));
-        TAILQ_INIT(&ahc->platform_data->completeq);
         ahc->platform_data->irq = AHC_LINUX_NOIRQ;
         ahc_lockinit(ahc);
-        init_timer(&ahc->platform_data->completeq_timer);
-        ahc->platform_data->completeq_timer.data = (u_long)ahc;
-        ahc->platform_data->completeq_timer.function =
-            (ahc_linux_callback_t *)ahc_linux_thread_run_complete_queue;
         init_MUTEX_LOCKED(&ahc->platform_data->eh_sem);
         ahc->seltime = (aic7xxx_seltime & 0x3) << 4;
         ahc->seltime_b = (aic7xxx_seltime & 0x3) << 4;
@@ -1355,7 +1300,6 @@ ahc_platform_free(struct ahc_softc *ahc)
         int i, j;
 
         if (ahc->platform_data != NULL) {
-                del_timer_sync(&ahc->platform_data->completeq_timer);
                 if (ahc->platform_data->host != NULL) {
                         scsi_remove_host(ahc->platform_data->host);
                         scsi_host_put(ahc->platform_data->host);
@@ -1504,18 +1448,6 @@ ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, char channel,
         return 0;
 }
 
-static void
-ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc)
-{
-        u_long flags;
-
-        ahc_lock(ahc, &flags);
-        del_timer(&ahc->platform_data->completeq_timer);
-        ahc->platform_data->flags &= ~AHC_RUN_CMPLT_Q_TIMER;
-        ahc_linux_run_complete_queue(ahc);
-        ahc_unlock(ahc, &flags);
-}
-
 static u_int
 ahc_linux_user_tagdepth(struct ahc_softc *ahc, struct ahc_devinfo *devinfo)
 {
@@ -1785,7 +1717,6 @@ ahc_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
         ahc = (struct ahc_softc *) dev_id;
         ahc_lock(ahc, &flags); 
         ours = ahc_intr(ahc);
-        ahc_linux_run_complete_queue(ahc);
         ahc_unlock(ahc, &flags);
         return IRQ_RETVAL(ours);
 }
@@ -1794,8 +1725,6 @@ void
 ahc_platform_flushwork(struct ahc_softc *ahc)
 {
 
-        while (ahc_linux_run_complete_queue(ahc) != NULL)
-                ;
 }
 
 static struct ahc_linux_target*
@@ -2275,22 +2204,6 @@ static void
 ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, struct scsi_cmnd *cmd)
 {
         /*
-         * Typically, the complete queue has very few entries
-         * queued to it before the queue is emptied by
-         * ahc_linux_run_complete_queue, so sorting the entries
-         * by generation number should be inexpensive.
-         * We perform the sort so that commands that complete
-         * with an error are retuned in the order origionally
-         * queued to the controller so that any subsequent retries
-         * are performed in order.  The underlying ahc routines do
-         * not guarantee the order that aborted commands will be
-         * returned to us.
-         */
-        struct ahc_completeq *completeq;
-        struct ahc_cmd *list_cmd;
-        struct ahc_cmd *acmd;
-
-        /*
          * Map CAM error codes into Linux Error codes.  We
          * avoid the conversion so that the DV code has the
          * full error information available when making
@@ -2343,26 +2256,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, struct scsi_cmnd *cmd)
                         new_status = DID_ERROR;
                         break;
                 case CAM_REQUEUE_REQ:
-                        /*
-                         * If we want the request requeued, make sure there
-                         * are sufficent retries.  In the old scsi error code,
-                         * we used to be able to specify a result code that
-                         * bypassed the retry count.  Now we must use this
-                         * hack.  We also "fake" a check condition with
-                         * a sense code of ABORTED COMMAND.  This seems to
-                         * evoke a retry even if this command is being sent
-                         * via the eh thread.  Ick!  Ick!  Ick!
-                         */
-                        if (cmd->retries > 0)
-                                cmd->retries--;
-                        new_status = DID_OK;
-                        ahc_cmd_set_scsi_status(cmd, SCSI_STATUS_CHECK_COND);
-                        cmd->result |= (DRIVER_SENSE << 24);
-                        memset(cmd->sense_buffer, 0,
-                               sizeof(cmd->sense_buffer));
-                        cmd->sense_buffer[0] = SSD_ERRCODE_VALID
-                                             | SSD_CURRENT_ERROR;
-                        cmd->sense_buffer[2] = SSD_KEY_ABORTED_COMMAND;
+                        new_status = DID_REQUEUE;
                         break;
                 default:
                         /* We should never get here */
@@ -2373,17 +2267,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, struct scsi_cmnd *cmd)
                 ahc_cmd_set_transaction_status(cmd, new_status);
         }
 
-        completeq = &ahc->platform_data->completeq;
-        list_cmd = TAILQ_FIRST(completeq);
-        acmd = (struct ahc_cmd *)cmd;
-        while (list_cmd != NULL
-            && acmd_scsi_cmd(list_cmd).serial_number
-             < acmd_scsi_cmd(acmd).serial_number)
-                list_cmd = TAILQ_NEXT(list_cmd, acmd_links.tqe);
-        if (list_cmd != NULL)
-                TAILQ_INSERT_BEFORE(list_cmd, acmd, acmd_links.tqe);
-        else
-                TAILQ_INSERT_TAIL(completeq, acmd, acmd_links.tqe);
+        cmd->scsi_done(cmd);
 }
 
 static void
@@ -2747,7 +2631,6 @@ done:
                 }
                 spin_lock_irq(&ahc->platform_data->spin_lock);
         }
-        ahc_linux_run_complete_queue(ahc);
         return (retval);
 }