diff --git a/[refs] b/[refs]
index f8332a17461f..4360e341db9d 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 064e38aaded5269e573ac1c765284fd65c8ebd13
+refs/heads/master: a3cb900cc408977a11519bc7c760f3e499079589
diff --git a/trunk/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/trunk/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 35dc8fbe92bd..f6b32d112357 100644
--- a/trunk/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/trunk/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -835,7 +835,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
 {
 	struct cpufreq_frequency_table *powernow_table;
 	int ret_val = -ENODEV;
-	acpi_integer control, status;
+	acpi_integer space_id;
 
 	if (acpi_processor_register_performance(&data->acpi_data, data->cpu)) {
 		dprintk("register performance failed: bad ACPI data\n");
@@ -848,13 +848,12 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
 		goto err_out;
 	}
 
-	control = data->acpi_data.control_register.space_id;
-	status = data->acpi_data.status_register.space_id;
-
-	if ((control != ACPI_ADR_SPACE_FIXED_HARDWARE) ||
-	    (status != ACPI_ADR_SPACE_FIXED_HARDWARE)) {
+	space_id = data->acpi_data.control_register.space_id;
+	if ((space_id != ACPI_ADR_SPACE_FIXED_HARDWARE) ||
+		(space_id != ACPI_ADR_SPACE_FIXED_HARDWARE)) {
 		dprintk("Invalid control/status registers (%x - %x)\n",
-			control, status);
+			data->acpi_data.control_register.space_id,
+			space_id);
 		goto err_out;
 	}
 
diff --git a/trunk/drivers/ata/pata_ali.c b/trunk/drivers/ata/pata_ali.c
index 751b7ea4816c..fc9c5d6d7d80 100644
--- a/trunk/drivers/ata/pata_ali.c
+++ b/trunk/drivers/ata/pata_ali.c
@@ -497,14 +497,16 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	};
 	/* Revision 0x20 added DMA */
 	static const struct ata_port_info info_20 = {
-		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
+		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 |
+							ATA_FLAG_IGN_SIMPLEX,
 		.pio_mask = ATA_PIO4,
 		.mwdma_mask = ATA_MWDMA2,
 		.port_ops = &ali_20_port_ops
 	};
 	/* Revision 0x20 with support logic added UDMA */
 	static const struct ata_port_info info_20_udma = {
-		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
+		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 |
+							ATA_FLAG_IGN_SIMPLEX,
 		.pio_mask = ATA_PIO4,
 		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA2,
@@ -512,7 +514,8 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	};
 	/* Revision 0xC2 adds UDMA66 */
 	static const struct ata_port_info info_c2 = {
-		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
+		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 |
+							ATA_FLAG_IGN_SIMPLEX,
 		.pio_mask = ATA_PIO4,
 		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA4,
@@ -520,7 +523,8 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	};
 	/* Revision 0xC3 is UDMA66 for now */
 	static const struct ata_port_info info_c3 = {
-		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
+		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 |
+							ATA_FLAG_IGN_SIMPLEX,
 		.pio_mask = ATA_PIO4,
 		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA4,
@@ -528,7 +532,8 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	};
 	/* Revision 0xC4 is UDMA100 */
 	static const struct ata_port_info info_c4 = {
-		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
+		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48 |
+							ATA_FLAG_IGN_SIMPLEX,
 		.pio_mask = ATA_PIO4,
 		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA5,
@@ -536,7 +541,7 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	};
 	/* Revision 0xC5 is UDMA133 with LBA48 DMA */
 	static const struct ata_port_info info_c5 = {
-		.flags = ATA_FLAG_SLAVE_POSS,
+		.flags = ATA_FLAG_SLAVE_POSS | 	ATA_FLAG_IGN_SIMPLEX,
 		.pio_mask = ATA_PIO4,
 		.mwdma_mask = ATA_MWDMA2,
 		.udma_mask = ATA_UDMA6,
diff --git a/trunk/drivers/gpu/drm/drm_bufs.c b/trunk/drivers/gpu/drm/drm_bufs.c
index 0411d912d82a..80a257554b30 100644
--- a/trunk/drivers/gpu/drm/drm_bufs.c
+++ b/trunk/drivers/gpu/drm/drm_bufs.c
@@ -371,7 +371,8 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset,
 	list->user_token = list->hash.key << PAGE_SHIFT;
 	mutex_unlock(&dev->struct_mutex);
 
-	list->master = dev->primary->master;
+	if (!(map->flags & _DRM_DRIVER))
+		list->master = dev->primary->master;
 	*maplist = list;
 	return 0;
 	}
diff --git a/trunk/drivers/media/video/ivtv/ivtv-queue.c b/trunk/drivers/media/video/ivtv/ivtv-queue.c
index 7fde36e6d227..ff7b7deded4f 100644
--- a/trunk/drivers/media/video/ivtv/ivtv-queue.c
+++ b/trunk/drivers/media/video/ivtv/ivtv-queue.c
@@ -230,8 +230,7 @@ int ivtv_stream_alloc(struct ivtv_stream *s)
 		return -ENOMEM;
 	}
 	if (ivtv_might_use_dma(s)) {
-		s->sg_handle = pci_map_single(itv->pdev, s->sg_dma,
-				sizeof(struct ivtv_sg_element), PCI_DMA_TODEVICE);
+		s->sg_handle = pci_map_single(itv->pdev, s->sg_dma, sizeof(struct ivtv_sg_element), s->dma);
 		ivtv_stream_sync_for_cpu(s);
 	}
 
diff --git a/trunk/drivers/mtd/nand/davinci_nand.c b/trunk/drivers/mtd/nand/davinci_nand.c
index 02700f769b8a..0119220de7d0 100644
--- a/trunk/drivers/mtd/nand/davinci_nand.c
+++ b/trunk/drivers/mtd/nand/davinci_nand.c
@@ -407,17 +407,16 @@ static int __init nand_davinci_probe(struct platform_device *pdev)
 	}
 	info->chip.ecc.mode = ecc_mode;
 
-	info->clk = clk_get(&pdev->dev, "aemif");
+	info->clk = clk_get(&pdev->dev, "AEMIFCLK");
 	if (IS_ERR(info->clk)) {
 		ret = PTR_ERR(info->clk);
-		dev_dbg(&pdev->dev, "unable to get AEMIF clock, err %d\n", ret);
+		dev_dbg(&pdev->dev, "unable to get AEMIFCLK, err %d\n", ret);
 		goto err_clk;
 	}
 
 	ret = clk_enable(info->clk);
 	if (ret < 0) {
-		dev_dbg(&pdev->dev, "unable to enable AEMIF clock, err %d\n",
-			ret);
+		dev_dbg(&pdev->dev, "unable to enable AEMIFCLK, err %d\n", ret);
 		goto err_clk_enable;
 	}
 
diff --git a/trunk/fs/btrfs/extent-tree.c b/trunk/fs/btrfs/extent-tree.c
index 35af93355063..3e2c7c738f23 100644
--- a/trunk/fs/btrfs/extent-tree.c
+++ b/trunk/fs/btrfs/extent-tree.c
@@ -2622,18 +2622,7 @@ static noinline int find_free_extent(struct btrfs_trans_handle *trans,
 						       search_start);
 		if (block_group && block_group_bits(block_group, data)) {
 			down_read(&space_info->groups_sem);
-			if (list_empty(&block_group->list) ||
-			    block_group->ro) {
-				/*
-				 * someone is removing this block group,
-				 * we can't jump into the have_block_group
-				 * target because our list pointers are not
-				 * valid
-				 */
-				btrfs_put_block_group(block_group);
-				up_read(&space_info->groups_sem);
-			} else
-				goto have_block_group;
+			goto have_block_group;
 		} else if (block_group) {
 			btrfs_put_block_group(block_group);
 		}
@@ -2667,13 +2656,6 @@ static noinline int find_free_extent(struct btrfs_trans_handle *trans,
 			 * people trying to start a new cluster
 			 */
 			spin_lock(&last_ptr->refill_lock);
-			if (last_ptr->block_group &&
-			    (last_ptr->block_group->ro ||
-			    !block_group_bits(last_ptr->block_group, data))) {
-				offset = 0;
-				goto refill_cluster;
-			}
-
 			offset = btrfs_alloc_from_cluster(block_group, last_ptr,
 						 num_bytes, search_start);
 			if (offset) {
@@ -2699,17 +2681,10 @@ static noinline int find_free_extent(struct btrfs_trans_handle *trans,
 
 				last_ptr_loop = 1;
 				search_start = block_group->key.objectid;
-				/*
-				 * we know this block group is properly
-				 * in the list because
-				 * btrfs_remove_block_group, drops the
-				 * cluster before it removes the block
-				 * group from the list
-				 */
 				goto have_block_group;
 			}
 			spin_unlock(&last_ptr->lock);
-refill_cluster:
+
 			/*
 			 * this cluster didn't work out, free it and
 			 * start over
@@ -5993,7 +5968,6 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
 {
 	struct btrfs_path *path;
 	struct btrfs_block_group_cache *block_group;
-	struct btrfs_free_cluster *cluster;
 	struct btrfs_key key;
 	int ret;
 
@@ -6005,21 +5979,6 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
 
 	memcpy(&key, &block_group->key, sizeof(key));
 
-	/* make sure this block group isn't part of an allocation cluster */
-	cluster = &root->fs_info->data_alloc_cluster;
-	spin_lock(&cluster->refill_lock);
-	btrfs_return_cluster_to_free_space(block_group, cluster);
-	spin_unlock(&cluster->refill_lock);
-
-	/*
-	 * make sure this block group isn't part of a metadata
-	 * allocation cluster
-	 */
-	cluster = &root->fs_info->meta_alloc_cluster;
-	spin_lock(&cluster->refill_lock);
-	btrfs_return_cluster_to_free_space(block_group, cluster);
-	spin_unlock(&cluster->refill_lock);
-
 	path = btrfs_alloc_path();
 	BUG_ON(!path);
 
@@ -6029,11 +5988,7 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
 	spin_unlock(&root->fs_info->block_group_cache_lock);
 	btrfs_remove_free_space_cache(block_group);
 	down_write(&block_group->space_info->groups_sem);
-	/*
-	 * we must use list_del_init so people can check to see if they
-	 * are still on the list after taking the semaphore
-	 */
-	list_del_init(&block_group->list);
+	list_del(&block_group->list);
 	up_write(&block_group->space_info->groups_sem);
 
 	spin_lock(&block_group->space_info->lock);
diff --git a/trunk/fs/btrfs/volumes.c b/trunk/fs/btrfs/volumes.c
index a6d35b0054ca..5f01dad4b696 100644
--- a/trunk/fs/btrfs/volumes.c
+++ b/trunk/fs/btrfs/volumes.c
@@ -1440,7 +1440,6 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
 	device->io_align = root->sectorsize;
 	device->sector_size = root->sectorsize;
 	device->total_bytes = i_size_read(bdev->bd_inode);
-	device->disk_total_bytes = device->total_bytes;
 	device->dev_root = root->fs_info->dev_root;
 	device->bdev = bdev;
 	device->in_fs_metadata = 1;