Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 17 insertions, 24 deletions

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 31fc76960a8f..04b09564bfa9 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -31,7 +31,6 @@
 #include <linux/delay.h>
 #include <linux/timer.h>
 #include <linux/seq_file.h>
-#include <linux/smp_lock.h>
 #include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/errno.h>
@@ -52,6 +51,7 @@
 
 #include "ide-cd.h"
 
+static DEFINE_MUTEX(ide_cd_mutex);
 static DEFINE_MUTEX(idecd_ref_mutex);
 
 static void ide_cd_release(struct device *);
@@ -258,17 +258,10 @@ static int ide_cd_breathe(ide_drive_t *drive, struct request *rq)
         if (time_after(jiffies, info->write_timeout))
                 return 0;
         else {
-                struct request_queue *q = drive->queue;
-                unsigned long flags;
-
                 /*
-                 * take a breather relying on the unplug timer to kick us again
+                 * take a breather
                  */
-
-                spin_lock_irqsave(q->queue_lock, flags);
-                blk_plug_device(q);
-                spin_unlock_irqrestore(q->queue_lock, flags);
-
+                blk_delay_queue(drive->queue, 1);
                 return 1;
         }
 }
@@ -785,7 +778,8 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
                                         sector_t block)
 {
         struct ide_cmd cmd;
-        int uptodate = 0, nsectors;
+        int uptodate = 0;
+        unsigned int nsectors;
 
         ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
                                   rq->cmd[0], (unsigned long long)block);
@@ -1177,7 +1171,7 @@ static struct cdrom_device_ops ide_cdrom_dops = {
         .open                   = ide_cdrom_open_real,
         .release                = ide_cdrom_release_real,
         .drive_status           = ide_cdrom_drive_status,
-        .media_changed          = ide_cdrom_check_media_change_real,
+        .check_events           = ide_cdrom_check_events_real,
         .tray_move              = ide_cdrom_tray_move,
         .lock_door              = ide_cdrom_lock_door,
         .select_speed           = ide_cdrom_select_speed,
@@ -1514,8 +1508,6 @@ static int ide_cdrom_setup(ide_drive_t *drive)
         blk_queue_dma_alignment(q, 31);
         blk_queue_update_dma_pad(q, 15);
 
-        q->unplug_delay = max((1 * HZ) / 1000, 1);
-
         drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
         drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
 
@@ -1602,7 +1594,7 @@ static int idecd_open(struct block_device *bdev, fmode_t mode)
         struct cdrom_info *info;
         int rc = -ENXIO;
 
-        lock_kernel();
+        mutex_lock(&ide_cd_mutex);
         info = ide_cd_get(bdev->bd_disk);
         if (!info)
                 goto out;
@@ -1611,7 +1603,7 @@ static int idecd_open(struct block_device *bdev, fmode_t mode)
         if (rc < 0)
                 ide_cd_put(info);
 out:
-        unlock_kernel();
+        mutex_unlock(&ide_cd_mutex);
         return rc;
 }
 
@@ -1619,11 +1611,11 @@ static int idecd_release(struct gendisk *disk, fmode_t mode)
 {
         struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
 
-        lock_kernel();
+        mutex_lock(&ide_cd_mutex);
         cdrom_release(&info->devinfo, mode);
 
         ide_cd_put(info);
-        unlock_kernel();
+        mutex_unlock(&ide_cd_mutex);
 
         return 0;
 }
@@ -1694,18 +1686,19 @@ static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
 {
         int ret;
 
-        lock_kernel();
+        mutex_lock(&ide_cd_mutex);
         ret = idecd_locked_ioctl(bdev, mode, cmd, arg);
-        unlock_kernel();
+        mutex_unlock(&ide_cd_mutex);
 
         return ret;
 }
 
 
-static int idecd_media_changed(struct gendisk *disk)
+static unsigned int idecd_check_events(struct gendisk *disk,
+                                       unsigned int clearing)
 {
         struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
-        return cdrom_media_changed(&info->devinfo);
+        return cdrom_check_events(&info->devinfo, clearing);
 }
 
 static int idecd_revalidate_disk(struct gendisk *disk)
@@ -1723,7 +1716,7 @@ static const struct block_device_operations idecd_ops = {
         .open                   = idecd_open,
         .release                = idecd_release,
         .ioctl                  = idecd_ioctl,
-        .media_changed          = idecd_media_changed,
+        .check_events           = idecd_check_events,
         .revalidate_disk        = idecd_revalidate_disk
 };
 
@@ -1789,7 +1782,7 @@ static int ide_cd_probe(ide_drive_t *drive)
 
         ide_cd_read_toc(drive, &sense);
         g->fops = &idecd_ops;
-        g->flags |= GENHD_FL_REMOVABLE;
+        g->flags |= GENHD_FL_REMOVABLE | GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE;
         add_disk(g);
         return 0;