Merge branch 'master' into upstream

Conflicts:
	drivers/hid/hid-ids.h

14 files changed, 96 insertions, 92 deletions

diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index eb4fa194394..ce1fa923c41 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -7101,7 +7101,7 @@ static struct DAC960_privdata DAC960_BA_privdata = {
 
 static struct DAC960_privdata DAC960_LP_privdata = {
 	.HardwareType =		DAC960_LP_Controller,
-	.FirmwareType 	=	DAC960_LP_Controller,
+	.FirmwareType 	=	DAC960_V2_Controller,
 	.InterruptHandler =	DAC960_LP_InterruptHandler,
 	.MemoryWindowSize =	DAC960_LP_RegisterWindowSize,
 };
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index 13bb69d2abb..64a223b0cc2 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -735,21 +735,6 @@ diskstats(struct gendisk *disk, struct bio *bio, ulong duration, sector_t sector
 	part_stat_unlock();
 }
 
-/*
- * Ensure we don't create aliases in VI caches
- */
-static inline void
-killalias(struct bio *bio)
-{
-	struct bio_vec *bv;
-	int i;
-
-	if (bio_data_dir(bio) == READ)
-		__bio_for_each_segment(bv, bio, i, 0) {
-			flush_dcache_page(bv->bv_page);
-		}
-}
-
 void
 aoecmd_ata_rsp(struct sk_buff *skb)
 {
@@ -871,7 +856,7 @@ aoecmd_ata_rsp(struct sk_buff *skb)
 		if (buf->flags & BUFFL_FAIL)
 			bio_endio(buf->bio, -EIO);
 		else {
-			killalias(buf->bio);
+			bio_flush_dcache_pages(buf->bio);
 			bio_endio(buf->bio, 0);
 		}
 		mempool_free(buf, d->bufpool);
diff --git a/drivers/block/drbd/Kconfig b/drivers/block/drbd/Kconfig
index f4acd04ebee..df098378739 100644
--- a/drivers/block/drbd/Kconfig
+++ b/drivers/block/drbd/Kconfig
@@ -3,7 +3,7 @@
 #
 
 comment "DRBD disabled because PROC_FS, INET or CONNECTOR not selected"
-	depends on !PROC_FS || !INET || !CONNECTOR
+	depends on PROC_FS='n' || INET='n' || CONNECTOR='n'
 
 config BLK_DEV_DRBD
 	tristate "DRBD Distributed Replicated Block Device support"
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 2312d782fe9..2bf3a6ef368 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -1275,7 +1275,7 @@ struct bm_extent {
 #if DRBD_MAX_SECTORS_BM < DRBD_MAX_SECTORS_32
 #define DRBD_MAX_SECTORS      DRBD_MAX_SECTORS_BM
 #define DRBD_MAX_SECTORS_FLEX DRBD_MAX_SECTORS_BM
-#elif !defined(CONFIG_LBD) && BITS_PER_LONG == 32
+#elif !defined(CONFIG_LBDAF) && BITS_PER_LONG == 32
 #define DRBD_MAX_SECTORS      DRBD_MAX_SECTORS_32
 #define DRBD_MAX_SECTORS_FLEX DRBD_MAX_SECTORS_32
 #else
@@ -1371,10 +1371,9 @@ extern int is_valid_ar_handle(struct drbd_request *, sector_t);
 extern void drbd_suspend_io(struct drbd_conf *mdev);
 extern void drbd_resume_io(struct drbd_conf *mdev);
 extern char *ppsize(char *buf, unsigned long long size);
-extern sector_t drbd_new_dev_size(struct drbd_conf *,
-		struct drbd_backing_dev *);
+extern sector_t drbd_new_dev_size(struct drbd_conf *, struct drbd_backing_dev *, int);
 enum determine_dev_size { dev_size_error = -1, unchanged = 0, shrunk = 1, grew = 2 };
-extern enum determine_dev_size drbd_determin_dev_size(struct drbd_conf *) __must_hold(local);
+extern enum determine_dev_size drbd_determin_dev_size(struct drbd_conf *, int force) __must_hold(local);
 extern void resync_after_online_grow(struct drbd_conf *);
 extern void drbd_setup_queue_param(struct drbd_conf *mdev, unsigned int) __must_hold(local);
 extern int drbd_set_role(struct drbd_conf *mdev, enum drbd_role new_role,
@@ -1490,7 +1489,7 @@ void drbd_bump_write_ordering(struct drbd_conf *mdev, enum write_ordering_e wo);
 
 /* drbd_proc.c */
 extern struct proc_dir_entry *drbd_proc;
-extern struct file_operations drbd_proc_fops;
+extern const struct file_operations drbd_proc_fops;
 extern const char *drbd_conn_str(enum drbd_conns s);
 extern const char *drbd_role_str(enum drbd_role s);
 
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 157d1e4343c..ab871e00ffc 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -27,7 +27,6 @@
  */
 
 #include <linux/module.h>
-#include <linux/version.h>
 #include <linux/drbd.h>
 #include <asm/uaccess.h>
 #include <asm/types.h>
@@ -151,7 +150,7 @@ wait_queue_head_t drbd_pp_wait;
 
 DEFINE_RATELIMIT_STATE(drbd_ratelimit_state, 5 * HZ, 5);
 
-static struct block_device_operations drbd_ops = {
+static const struct block_device_operations drbd_ops = {
 	.owner =   THIS_MODULE,
 	.open =    drbd_open,
 	.release = drbd_release,
@@ -1299,6 +1298,7 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
 				dev_err(DEV, "Sending state in drbd_io_error() failed\n");
 		}
 
+		wait_event(mdev->misc_wait, !atomic_read(&mdev->local_cnt));
 		lc_destroy(mdev->resync);
 		mdev->resync = NULL;
 		lc_destroy(mdev->act_log);
@@ -2973,7 +2973,6 @@ struct drbd_conf *drbd_new_device(unsigned int minor)
 		goto out_no_q;
 	mdev->rq_queue = q;
 	q->queuedata   = mdev;
-	blk_queue_max_segment_size(q, DRBD_MAX_SEGMENT_SIZE);
 
 	disk = alloc_disk(1);
 	if (!disk)
@@ -2997,6 +2996,7 @@ struct drbd_conf *drbd_new_device(unsigned int minor)
 	q->backing_dev_info.congested_data = mdev;
 
 	blk_queue_make_request(q, drbd_make_request_26);
+	blk_queue_max_segment_size(q, DRBD_MAX_SEGMENT_SIZE);
 	blk_queue_bounce_limit(q, BLK_BOUNCE_ANY);
 	blk_queue_merge_bvec(q, drbd_merge_bvec);
 	q->queue_lock = &mdev->req_lock; /* needed since we use */
@@ -3623,7 +3623,7 @@ _drbd_fault_random(struct fault_random_state *rsp)
 {
 	long refresh;
 
-	if (--rsp->count < 0) {
+	if (!rsp->count--) {
 		get_random_bytes(&refresh, sizeof(refresh));
 		rsp->state += refresh;
 		rsp->count = FAULT_RANDOM_REFRESH;
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 436a090b532..1292e062066 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -510,7 +510,7 @@ void drbd_resume_io(struct drbd_conf *mdev)
  * Returns 0 on success, negative return values indicate errors.
  * You should call drbd_md_sync() after calling this function.
  */
-enum determine_dev_size drbd_determin_dev_size(struct drbd_conf *mdev) __must_hold(local)
+enum determine_dev_size drbd_determin_dev_size(struct drbd_conf *mdev, int force) __must_hold(local)
 {
 	sector_t prev_first_sect, prev_size; /* previous meta location */
 	sector_t la_size;
@@ -541,7 +541,7 @@ enum determine_dev_size drbd_determin_dev_size(struct drbd_conf *mdev) __must_ho
 	/* TODO: should only be some assert here, not (re)init... */
 	drbd_md_set_sector_offsets(mdev, mdev->ldev);
 
-	size = drbd_new_dev_size(mdev, mdev->ldev);
+	size = drbd_new_dev_size(mdev, mdev->ldev, force);
 
 	if (drbd_get_capacity(mdev->this_bdev) != size ||
 	    drbd_bm_capacity(mdev) != size) {
@@ -596,7 +596,7 @@ out:
 }
 
 sector_t
-drbd_new_dev_size(struct drbd_conf *mdev, struct drbd_backing_dev *bdev)
+drbd_new_dev_size(struct drbd_conf *mdev, struct drbd_backing_dev *bdev, int assume_peer_has_space)
 {
 	sector_t p_size = mdev->p_size;   /* partner's disk size. */
 	sector_t la_size = bdev->md.la_size_sect; /* last agreed size. */
@@ -606,6 +606,11 @@ drbd_new_dev_size(struct drbd_conf *mdev, struct drbd_backing_dev *bdev)
 
 	m_size = drbd_get_max_capacity(bdev);
 
+	if (mdev->state.conn < C_CONNECTED && assume_peer_has_space) {
+		dev_warn(DEV, "Resize while not connected was forced by the user!\n");
+		p_size = m_size;
+	}
+
 	if (p_size && m_size) {
 		size = min_t(sector_t, p_size, m_size);
 	} else {
@@ -965,7 +970,7 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
 
 	/* Prevent shrinking of consistent devices ! */
 	if (drbd_md_test_flag(nbc, MDF_CONSISTENT) &&
-	   drbd_new_dev_size(mdev, nbc) < nbc->md.la_size_sect) {
+	    drbd_new_dev_size(mdev, nbc, 0) < nbc->md.la_size_sect) {
 		dev_warn(DEV, "refusing to truncate a consistent device\n");
 		retcode = ERR_DISK_TO_SMALL;
 		goto force_diskless_dec;
@@ -1052,7 +1057,7 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
 	    !drbd_md_test_flag(mdev->ldev, MDF_CONNECTED_IND))
 		set_bit(USE_DEGR_WFC_T, &mdev->flags);
 
-	dd = drbd_determin_dev_size(mdev);
+	dd = drbd_determin_dev_size(mdev, 0);
 	if (dd == dev_size_error) {
 		retcode = ERR_NOMEM_BITMAP;
 		goto force_diskless_dec;
@@ -1271,8 +1276,7 @@ static int drbd_nl_net_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
 			goto fail;
 		}
 
-		if (crypto_tfm_alg_type(crypto_hash_tfm(tfm))
-						!= CRYPTO_ALG_TYPE_HASH) {
+		if (!drbd_crypto_is_hash(crypto_hash_tfm(tfm))) {
 			retcode = ERR_AUTH_ALG_ND;
 			goto fail;
 		}
@@ -1505,7 +1509,7 @@ static int drbd_nl_resize(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
 	}
 
 	mdev->ldev->dc.disk_size = (sector_t)rs.resize_size;
-	dd = drbd_determin_dev_size(mdev);
+	dd = drbd_determin_dev_size(mdev, rs.resize_force);
 	drbd_md_sync(mdev);
 	put_ldev(mdev);
 	if (dd == dev_size_error) {
diff --git a/drivers/block/drbd/drbd_proc.c b/drivers/block/drbd/drbd_proc.c
index bdd0b4943b1..df8ad9660d8 100644
--- a/drivers/block/drbd/drbd_proc.c
+++ b/drivers/block/drbd/drbd_proc.c
@@ -38,7 +38,7 @@ static int drbd_proc_open(struct inode *inode, struct file *file);
 
 
 struct proc_dir_entry *drbd_proc;
-struct file_operations drbd_proc_fops = {
+const struct file_operations drbd_proc_fops = {
 	.owner		= THIS_MODULE,
 	.open		= drbd_proc_open,
 	.read		= seq_read,
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index c548f24f54a..d065c646b35 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -28,7 +28,6 @@
 #include <asm/uaccess.h>
 #include <net/sock.h>
 
-#include <linux/version.h>
 #include <linux/drbd.h>
 #include <linux/fs.h>
 #include <linux/file.h>
@@ -879,9 +878,13 @@ retry:
 
 	if (mdev->cram_hmac_tfm) {
 		/* drbd_request_state(mdev, NS(conn, WFAuth)); */
-		if (!drbd_do_auth(mdev)) {
+		switch (drbd_do_auth(mdev)) {
+		case -1:
 			dev_err(DEV, "Authentication of peer failed\n");
 			return -1;
+		case 0:
+			dev_err(DEV, "Authentication of peer failed, trying again.\n");
+			return 0;
 		}
 	}
 
@@ -1202,10 +1205,11 @@ static int receive_Barrier(struct drbd_conf *mdev, struct p_header *h)
 
 	case WO_bdev_flush:
 	case WO_drain_io:
-		D_ASSERT(rv == FE_STILL_LIVE);
-		set_bit(DE_BARRIER_IN_NEXT_EPOCH_ISSUED, &mdev->current_epoch->flags);
-		drbd_wait_ee_list_empty(mdev, &mdev->active_ee);
-		rv = drbd_flush_after_epoch(mdev, mdev->current_epoch);
+		if (rv == FE_STILL_LIVE) {
+			set_bit(DE_BARRIER_IN_NEXT_EPOCH_ISSUED, &mdev->current_epoch->flags);
+			drbd_wait_ee_list_empty(mdev, &mdev->active_ee);
+			rv = drbd_flush_after_epoch(mdev, mdev->current_epoch);
+		}
 		if (rv == FE_RECYCLED)
 			return TRUE;
 
@@ -1220,7 +1224,7 @@ static int receive_Barrier(struct drbd_conf *mdev, struct p_header *h)
 	epoch = kmalloc(sizeof(struct drbd_epoch), GFP_NOIO);
 	if (!epoch) {
 		dev_warn(DEV, "Allocation of an epoch failed, slowing down\n");
-		issue_flush = !test_and_set_bit(DE_BARRIER_IN_NEXT_EPOCH_ISSUED, &epoch->flags);
+		issue_flush = !test_and_set_bit(DE_BARRIER_IN_NEXT_EPOCH_ISSUED, &mdev->current_epoch->flags);
 		drbd_wait_ee_list_empty(mdev, &mdev->active_ee);
 		if (issue_flush) {
 			rv = drbd_flush_after_epoch(mdev, mdev->current_epoch);
@@ -2866,7 +2870,7 @@ static int receive_sizes(struct drbd_conf *mdev, struct p_header *h)
 
 		/* Never shrink a device with usable data during connect.
 		   But allow online shrinking if we are connected. */
-		if (drbd_new_dev_size(mdev, mdev->ldev) <
+		if (drbd_new_dev_size(mdev, mdev->ldev, 0) <
 		   drbd_get_capacity(mdev->this_bdev) &&
 		   mdev->state.disk >= D_OUTDATED &&
 		   mdev->state.conn < C_CONNECTED) {
@@ -2881,7 +2885,7 @@ static int receive_sizes(struct drbd_conf *mdev, struct p_header *h)
 #undef min_not_zero
 
 	if (get_ldev(mdev)) {
-		dd = drbd_determin_dev_size(mdev);
+	  dd = drbd_determin_dev_size(mdev, 0);
 		put_ldev(mdev);
 		if (dd == dev_size_error)
 			return FALSE;
@@ -3831,10 +3835,17 @@ static int drbd_do_auth(struct drbd_conf *mdev)
 {
 	dev_err(DEV, "This kernel was build without CONFIG_CRYPTO_HMAC.\n");
 	dev_err(DEV, "You need to disable 'cram-hmac-alg' in drbd.conf.\n");
-	return 0;
+	return -1;
 }
 #else
 #define CHALLENGE_LEN 64
+
+/* Return value:
+	1 - auth succeeded,
+	0 - failed, try again (network error),
+	-1 - auth failed, don't try again.
+*/
+
 static int drbd_do_auth(struct drbd_conf *mdev)
 {
 	char my_challenge[CHALLENGE_LEN];  /* 64 Bytes... */
@@ -3855,7 +3866,7 @@ static int drbd_do_auth(struct drbd_conf *mdev)
 				(u8 *)mdev->net_conf->shared_secret, key_len);
 	if (rv) {
 		dev_err(DEV, "crypto_hash_setkey() failed with %d\n", rv);
-		rv = 0;
+		rv = -1;
 		goto fail;
 	}
 
@@ -3878,14 +3889,14 @@ static int drbd_do_auth(struct drbd_conf *mdev)
 
 	if (p.length > CHALLENGE_LEN*2) {
 		dev_err(DEV, "expected AuthChallenge payload too big.\n");
-		rv = 0;
+		rv = -1;
 		goto fail;
 	}
 
 	peers_ch = kmalloc(p.length, GFP_NOIO);
 	if (peers_ch == NULL) {
 		dev_err(DEV, "kmalloc of peers_ch failed\n");
-		rv = 0;
+		rv = -1;
 		goto fail;
 	}
 
@@ -3901,7 +3912,7 @@ static int drbd_do_auth(struct drbd_conf *mdev)
 	response = kmalloc(resp_size, GFP_NOIO);
 	if (response == NULL) {
 		dev_err(DEV, "kmalloc of response failed\n");
-		rv = 0;
+		rv = -1;
 		goto fail;
 	}
 
@@ -3911,7 +3922,7 @@ static int drbd_do_auth(struct drbd_conf *mdev)
 	rv = crypto_hash_digest(&desc, &sg, sg.length, response);
 	if (rv) {
 		dev_err(DEV, "crypto_hash_digest() failed with %d\n", rv);
-		rv = 0;
+		rv = -1;
 		goto fail;
 	}
 
@@ -3945,9 +3956,9 @@ static int drbd_do_auth(struct drbd_conf *mdev)
 	}
 
 	right_response = kmalloc(resp_size, GFP_NOIO);
-	if (response == NULL) {
+	if (right_response == NULL) {
 		dev_err(DEV, "kmalloc of right_response failed\n");
-		rv = 0;
+		rv = -1;
 		goto fail;
 	}
 
@@ -3956,7 +3967,7 @@ static int drbd_do_auth(struct drbd_conf *mdev)
 	rv = crypto_hash_digest(&desc, &sg, sg.length, right_response);
 	if (rv) {
 		dev_err(DEV, "crypto_hash_digest() failed with %d\n", rv);
-		rv = 0;
+		rv = -1;
 		goto fail;
 	}
 
@@ -3965,6 +3976,8 @@ static int drbd_do_auth(struct drbd_conf *mdev)
 	if (rv)
 		dev_info(DEV, "Peer authenticated using %d bytes of '%s' HMAC\n",
 		     resp_size, mdev->net_conf->cram_hmac_alg);
+	else
+		rv = -1;
 
  fail:
 	kfree(peers_ch);
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index ed8796f1112..b453c2bca3b 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -24,7 +24,6 @@
  */
 
 #include <linux/module.h>
-#include <linux/version.h>
 #include <linux/drbd.h>
 #include <linux/sched.h>
 #include <linux/smp_lock.h>
@@ -34,7 +33,6 @@
 #include <linux/mm_inline.h>
 #include <linux/slab.h>
 #include <linux/random.h>
-#include <linux/mm.h>
 #include <linux/string.h>
 #include <linux/scatterlist.h>
 
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 5c01f747571..3266b4f65da 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3497,6 +3497,9 @@ static int fd_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
 	    ((cmd & 0x80) && !capable(CAP_SYS_ADMIN)))
 		return -EPERM;
 
+	if (WARN_ON(size < 0 || size > sizeof(inparam)))
+		return -EINVAL;
+
 	/* copyin */
 	CLEARSTRUCT(&inparam);
 	if (_IOC_DIR(cmd) & _IOC_WRITE)
@@ -4162,7 +4165,7 @@ static int floppy_resume(struct device *dev)
 	return 0;
 }
 
-static struct dev_pm_ops floppy_pm_ops = {
+static const struct dev_pm_ops floppy_pm_ops = {
 	.resume = floppy_resume,
 	.restore = floppy_resume,
 };
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c
index e0339aaa181..02b2583df7f 100644
--- a/drivers/block/mg_disk.c
+++ b/drivers/block/mg_disk.c
@@ -860,7 +860,7 @@ static int mg_probe(struct platform_device *plat_dev)
 		err = -EINVAL;
 		goto probe_err_2;
 	}
-	host->dev_base = ioremap(rsc->start , rsc->end + 1);
+	host->dev_base = ioremap(rsc->start, resource_size(rsc));
 	if (!host->dev_base) {
 		printk(KERN_ERR "%s:%d ioremap fail\n",
 				__func__, __LINE__);
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
index 6380ad8d91b..59ca2b77b57 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -200,7 +200,7 @@ struct floppy_state {
 	int	ejected;
 	wait_queue_head_t wait;
 	int	wanted;
-	struct device_node*	media_bay; /* NULL when not in bay */
+	struct macio_dev *mdev;
 	char	dbdma_cmd_space[5 * sizeof(struct dbdma_cmd)];
 };
 
@@ -303,14 +303,13 @@ static int swim3_readbit(struct floppy_state *fs, int bit)
 static void do_fd_request(struct request_queue * q)
 {
 	int i;
-	for(i=0;i<floppy_count;i++)
-	{
-#ifdef CONFIG_PMAC_MEDIABAY
-		if (floppy_states[i].media_bay &&
-			check_media_bay(floppy_states[i].media_bay, MB_FD))
+
+	for(i=0; i<floppy_count; i++) {
+		struct floppy_state *fs = &floppy_states[i];
+		if (fs->mdev->media_bay &&
+		    check_media_bay(fs->mdev->media_bay) != MB_FD)
 			continue;
-#endif /* CONFIG_PMAC_MEDIABAY */
-		start_request(&floppy_states[i]);
+		start_request(fs);
 	}
 }
 
@@ -849,10 +848,9 @@ static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
 	if ((cmd & 0x80) && !capable(CAP_SYS_ADMIN))
 		return -EPERM;
 
-#ifdef CONFIG_PMAC_MEDIABAY
-	if (fs->media_bay && check_media_bay(fs->media_bay, MB_FD))
+	if (fs->mdev->media_bay &&
+	    check_media_bay(fs->mdev->media_bay) != MB_FD)
 		return -ENXIO;
-#endif
 
 	switch (cmd) {
 	case FDEJECT:
@@ -876,10 +874,9 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
 	int n, err = 0;
 
 	if (fs->ref_count == 0) {
-#ifdef CONFIG_PMAC_MEDIABAY
-		if (fs->media_bay && check_media_bay(fs->media_bay, MB_FD))
+		if (fs->mdev->media_bay &&
+		    check_media_bay(fs->mdev->media_bay) != MB_FD)
 			return -ENXIO;
-#endif
 		out_8(&sw->setup, S_IBM_DRIVE | S_FCLK_DIV2);
 		out_8(&sw->control_bic, 0xff);
 		out_8(&sw->mode, 0x95);
@@ -963,10 +960,9 @@ static int floppy_revalidate(struct gendisk *disk)
 	struct swim3 __iomem *sw;
 	int ret, n;
 
-#ifdef CONFIG_PMAC_MEDIABAY
-	if (fs->media_bay && check_media_bay(fs->media_bay, MB_FD))
+	if (fs->mdev->media_bay &&
+	    check_media_bay(fs->mdev->media_bay) != MB_FD)
 		return -ENXIO;
-#endif
 
 	sw = fs->swim3;
 	grab_drive(fs, revalidating, 0);
@@ -1009,7 +1005,6 @@ static const struct block_device_operations floppy_fops = {
 static int swim3_add_device(struct macio_dev *mdev, int index)
 {
 	struct device_node *swim = mdev->ofdev.node;
-	struct device_node *mediabay;
 	struct floppy_state *fs = &floppy_states[index];
 	int rc = -EBUSY;
 
@@ -1036,9 +1031,7 @@ static int swim3_add_device(struct macio_dev *mdev, int index)
 	}
 	dev_set_drvdata(&mdev->ofdev.dev, fs);
 
-	mediabay = (strcasecmp(swim->parent->type, "media-bay") == 0) ?
-		swim->parent : NULL;
-	if (mediabay == NULL)
+	if (mdev->media_bay == NULL)
 		pmac_call_feature(PMAC_FTR_SWIM3_ENABLE, swim, 0, 1);
 	
 	memset(fs, 0, sizeof(*fs));
@@ -1068,7 +1061,7 @@ static int swim3_add_device(struct macio_dev *mdev, int index)
 	fs->secpercyl = 36;
 	fs->secpertrack = 18;
 	fs->total_secs = 2880;
-	fs->media_bay = mediabay;
+	fs->mdev = mdev;
 	init_waitqueue_head(&fs->wait);
 
 	fs->dma_cmd = (struct dbdma_cmd *) DBDMA_ALIGN(fs->dbdma_cmd_space);
@@ -1093,7 +1086,7 @@ static int swim3_add_device(struct macio_dev *mdev, int index)
 	init_timer(&fs->timeout);
 
 	printk(KERN_INFO "fd%d: SWIM3 floppy controller %s\n", floppy_count,
-		mediabay ? "in media bay" : "");
+		mdev->media_bay ? "in media bay" : "");
 
 	return 0;
 
diff --git a/drivers/block/xd.c b/drivers/block/xd.c
index 0877d3628fd..d1fd032e751 100644
--- a/drivers/block/xd.c
+++ b/drivers/block/xd.c
@@ -169,13 +169,6 @@ static int __init xd_init(void)
 
 	init_timer (&xd_watchdog_int); xd_watchdog_int.function = xd_watchdog;
 
-	if (!xd_dma_buffer)
-		xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200);
-	if (!xd_dma_buffer) {
-		printk(KERN_ERR "xd: Out of memory.\n");
-		return -ENOMEM;
-	}
-
 	err = -EBUSY;
 	if (register_blkdev(XT_DISK_MAJOR, "xd"))
 		goto out1;
@@ -202,6 +195,19 @@ static int __init xd_init(void)
 			xd_drives,xd_drives == 1 ? "" : "s",xd_irq,xd_dma);
 	}
 
+	/*
+	 * With the drive detected, xd_maxsectors should now be known.
+	 * If xd_maxsectors is 0, nothing was detected and we fall through
+	 * to return -ENODEV
+	 */
+	if (!xd_dma_buffer && xd_maxsectors) {
+		xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200);
+		if (!xd_dma_buffer) {
+			printk(KERN_ERR "xd: Out of memory.\n");
+			goto out3;
+		}
+	}
+
 	err = -ENODEV;
 	if (!xd_drives)
 		goto out3;
@@ -249,15 +255,17 @@ out4:
 	for (i = 0; i < xd_drives; i++)
 		put_disk(xd_gendisk[i]);
 out3:
-	release_region(xd_iobase,4);
+	if (xd_maxsectors)
+		release_region(xd_iobase,4);
+
+	if (xd_dma_buffer)
+		xd_dma_mem_free((unsigned long)xd_dma_buffer,
+				xd_maxsectors * 0x200);
 out2:
 	blk_cleanup_queue(xd_queue);
 out1a:
 	unregister_blkdev(XT_DISK_MAJOR, "xd");
 out1:
-	if (xd_dma_buffer)
-		xd_dma_mem_free((unsigned long)xd_dma_buffer,
-				xd_maxsectors * 0x200);
 	return err;
 Enomem:
 	err = -ENOMEM;
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index b8578bb3f4c..05a31e55d27 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -42,6 +42,7 @@
 #include <linux/module.h>
 #include <linux/scatterlist.h>
 
+#include <xen/xen.h>
 #include <xen/xenbus.h>
 #include <xen/grant_table.h>
 #include <xen/events.h>