20 files changed, 143 insertions, 131 deletions

diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index d1f0120..5e1e12c 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -640,7 +640,7 @@ out:
 /* This function handles ioctl for the character device */
 static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-	struct inode *inode = file->f_path.dentry->d_inode;
+	struct inode *inode = file_inode(file);
 	long timeout;
 	unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0;
 	dma_addr_t dma_handle;
diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c
index 52a2f058..c845bdb 100644
--- a/drivers/scsi/3w-sas.c
+++ b/drivers/scsi/3w-sas.c
@@ -757,7 +757,7 @@ static long twl_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long
 	dma_addr_t dma_handle;
 	int request_id = 0;
 	TW_Ioctl_Driver_Command driver_command;
-	struct inode *inode = file->f_dentry->d_inode;
+	struct inode *inode = file_inode(file);
 	TW_Ioctl_Buf_Apache *tw_ioctl;
 	TW_Command_Full *full_command_packet;
 	TW_Device_Extension *tw_dev = twl_device_extension_list[iminor(inode)];
diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index 62071d2..56662ae 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -889,7 +889,7 @@ static long tw_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long a
 	unsigned long flags;
 	unsigned int data_buffer_length = 0;
 	unsigned long data_buffer_length_adjusted = 0;
-	struct inode *inode = file->f_dentry->d_inode;
+	struct inode *inode = file_inode(file);
 	unsigned long *cpu_addr;
 	long timeout;
 	TW_New_Ioctl *tw_ioctl;
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 142f632..db95c54 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -42,7 +42,7 @@ config SCSI_DMA
 
 config SCSI_TGT
 	tristate "SCSI target support"
-	depends on SCSI && EXPERIMENTAL
+	depends on SCSI
 	---help---
 	  If you want to use SCSI target mode drivers enable this option.
 	  If you choose M, the module will be called scsi_tgt.
@@ -883,7 +883,7 @@ config SCSI_IBMVSCSI
 	  This is the IBM POWER Virtual SCSI Client
 
 	  To compile this driver as a module, choose M here: the
-	  module will be called ibmvscsic.
+	  module will be called ibmvscsi.
 
 config SCSI_IBMVSCSIS
 	tristate "IBM Virtual SCSI Server support"
@@ -1392,8 +1392,8 @@ config SCSI_SYM53C416
 	  module will be called sym53c416.
 
 config SCSI_DC395x
-	tristate "Tekram DC395(U/UW/F) and DC315(U) SCSI support (EXPERIMENTAL)"
-	depends on PCI && SCSI && EXPERIMENTAL
+	tristate "Tekram DC395(U/UW/F) and DC315(U) SCSI support"
+	depends on PCI && SCSI
 	---help---
 	  This driver supports PCI SCSI host adapters based on the ASIC
 	  TRM-S1040 chip, e.g Tekram DC395(U/UW/F) and DC315(U) variants.
@@ -1618,8 +1618,8 @@ config GVP11_SCSI
 	  module will be called gvp11.
 
 config SCSI_A4000T
-	tristate "A4000T NCR53c710 SCSI support (EXPERIMENTAL)"
-	depends on AMIGA && SCSI && EXPERIMENTAL
+	tristate "A4000T NCR53c710 SCSI support"
+	depends on AMIGA && SCSI
 	select SCSI_SPI_ATTRS
 	help
 	  If you have an Amiga 4000T and have SCSI devices connected to the
@@ -1629,8 +1629,8 @@ config SCSI_A4000T
 	  module will be called a4000t.
 
 config SCSI_ZORRO7XX
-	tristate "Zorro NCR53c710 SCSI support (EXPERIMENTAL)"
-	depends on ZORRO && SCSI && EXPERIMENTAL
+	tristate "Zorro NCR53c710 SCSI support"
+	depends on ZORRO && SCSI
 	select SCSI_SPI_ATTRS
 	help
 	  Support for various NCR53c710-based SCSI controllers on Zorro
@@ -1807,8 +1807,8 @@ config SCSI_BFA_FC
 	  be called bfa.
 
 config SCSI_VIRTIO
-	tristate "virtio-scsi support (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && VIRTIO
+	tristate "virtio-scsi support"
+	depends on VIRTIO
 	help
           This is the virtual HBA driver for virtio.  If the kernel will
           be used in a virtual machine, say Y or M.
diff --git a/drivers/scsi/arm/Kconfig b/drivers/scsi/arm/Kconfig
index a8587f1..cfd172a 100644
--- a/drivers/scsi/arm/Kconfig
+++ b/drivers/scsi/arm/Kconfig
@@ -64,19 +64,19 @@ config SCSI_POWERTECSCSI
 	  you have one of these, say Y. If unsure, say N.
 
 comment "The following drivers are not fully supported"
-	depends on ARCH_ACORN && EXPERIMENTAL
+	depends on ARCH_ACORN
 
 config SCSI_CUMANA_1
-	tristate "CumanaSCSI I support (EXPERIMENTAL)"
-	depends on ARCH_ACORN && EXPERIMENTAL && SCSI
+	tristate "CumanaSCSI I support"
+	depends on ARCH_ACORN && SCSI
 	select SCSI_SPI_ATTRS
 	help
 	  This enables support for the Cumana SCSI I card. If you have an
 	  Acorn system with one of these, say Y. If unsure, say N.
 
 config SCSI_OAK1
-	tristate "Oak SCSI support (EXPERIMENTAL)"
-	depends on ARCH_ACORN && EXPERIMENTAL && SCSI
+	tristate "Oak SCSI support"
+	depends on ARCH_ACORN && SCSI
 	select SCSI_SPI_ATTRS
 	help
 	  This enables support for the Oak SCSI card. If you have an Acorn
diff --git a/drivers/scsi/bfa/bfad_im.c b/drivers/scsi/bfa/bfad_im.c
index 8f92732..5864f98 100644
--- a/drivers/scsi/bfa/bfad_im.c
+++ b/drivers/scsi/bfa/bfad_im.c
@@ -523,20 +523,13 @@ bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
 	int error = 1;
 
 	mutex_lock(&bfad_mutex);
-	if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) {
+	error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
+	if (error < 0) {
 		mutex_unlock(&bfad_mutex);
-		printk(KERN_WARNING "idr_pre_get failure\n");
+		printk(KERN_WARNING "idr_alloc failure\n");
 		goto out;
 	}
-
-	error = idr_get_new(&bfad_im_port_index, im_port,
-					 &im_port->idr_id);
-	if (error) {
-		mutex_unlock(&bfad_mutex);
-		printk(KERN_WARNING "idr_get_new failure\n");
-		goto out;
-	}
-
+	im_port->idr_id = error;
 	mutex_unlock(&bfad_mutex);
 
 	im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c
index a15474e..2a32374 100644
--- a/drivers/scsi/ch.c
+++ b/drivers/scsi/ch.c
@@ -895,7 +895,7 @@ static int ch_probe(struct device *dev)
 {
 	struct scsi_device *sd = to_scsi_device(dev);
 	struct device *class_dev;
-	int minor, ret = -ENOMEM;
+	int ret;
 	scsi_changer *ch;
 
 	if (sd->type != TYPE_MEDIUM_CHANGER)
@@ -905,22 +905,19 @@ static int ch_probe(struct device *dev)
 	if (NULL == ch)
 		return -ENOMEM;
 
-	if (!idr_pre_get(&ch_index_idr, GFP_KERNEL))
-		goto free_ch;
-
+	idr_preload(GFP_KERNEL);
 	spin_lock(&ch_index_lock);
-	ret = idr_get_new(&ch_index_idr, ch, &minor);
+	ret = idr_alloc(&ch_index_idr, ch, 0, CH_MAX_DEVS + 1, GFP_NOWAIT);
 	spin_unlock(&ch_index_lock);
+	idr_preload_end();
 
-	if (ret)
+	if (ret < 0) {
+		if (ret == -ENOSPC)
+			ret = -ENODEV;
 		goto free_ch;
-
-	if (minor > CH_MAX_DEVS) {
-		ret = -ENODEV;
-		goto remove_idr;
 	}
 
-	ch->minor = minor;
+	ch->minor = ret;
 	sprintf(ch->name,"ch%d",ch->minor);
 
 	class_dev = device_create(ch_sysfs_class, dev,
@@ -944,7 +941,7 @@ static int ch_probe(struct device *dev)
 
 	return 0;
 remove_idr:
-	idr_remove(&ch_index_idr, minor);
+	idr_remove(&ch_index_idr, ch->minor);
 free_ch:
 	kfree(ch);
 	return ret;
diff --git a/drivers/scsi/csiostor/csio_init.c b/drivers/scsi/csiostor/csio_init.c
index d81b03c..0604b5ff 100644
--- a/drivers/scsi/csiostor/csio_init.c
+++ b/drivers/scsi/csiostor/csio_init.c
@@ -64,7 +64,7 @@ static ssize_t
 csio_mem_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 {
 	loff_t pos = *ppos;
-	loff_t avail = file->f_path.dentry->d_inode->i_size;
+	loff_t avail = file_inode(file)->i_size;
 	unsigned int mem = (uintptr_t)file->private_data & 3;
 	struct csio_hw *hw = file->private_data - mem;
 
diff --git a/drivers/scsi/device_handler/Kconfig b/drivers/scsi/device_handler/Kconfig
index 6707025..69abd0a 100644
--- a/drivers/scsi/device_handler/Kconfig
+++ b/drivers/scsi/device_handler/Kconfig
@@ -32,8 +32,8 @@ config SCSI_DH_EMC
 	If you have a EMC CLARiiON select y. Otherwise, say N.
 
 config SCSI_DH_ALUA
-	tristate "SPC-3 ALUA Device Handler (EXPERIMENTAL)"
-	depends on SCSI_DH && EXPERIMENTAL
+	tristate "SPC-3 ALUA Device Handler"
+	depends on SCSI_DH
 	help
 	  SCSI Device handler for generic SPC-3 Asymmetric Logical Unit
 	  Access (ALUA).
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index b4f6c9a..b6e2700 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -2161,7 +2161,7 @@ static long adpt_unlocked_ioctl(struct file *file, uint cmd, ulong arg)
 	struct inode *inode;
 	long ret;
  
-	inode = file->f_dentry->d_inode;
+	inode = file_inode(file);
  
 	mutex_lock(&adpt_mutex);
 	ret = adpt_ioctl(inode, file, cmd, arg);
@@ -2177,7 +2177,7 @@ static long compat_adpt_ioctl(struct file *file,
 	struct inode *inode;
 	long ret;
  
-	inode = file->f_dentry->d_inode;
+	inode = file_inode(file);
  
 	mutex_lock(&adpt_mutex);
  
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 593085a..df0c3c7 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -468,10 +468,10 @@ void scsi_unregister(struct Scsi_Host *shost)
 }
 EXPORT_SYMBOL(scsi_unregister);
 
-static int __scsi_host_match(struct device *dev, void *data)
+static int __scsi_host_match(struct device *dev, const void *data)
 {
 	struct Scsi_Host *p;
-	unsigned short *hostnum = (unsigned short *)data;
+	const unsigned short *hostnum = data;
 
 	p = class_to_shost(dev);
 	return p->host_no == *hostnum;
diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
index d73fdcf..2839baa 100644
--- a/drivers/scsi/isci/init.c
+++ b/drivers/scsi/isci/init.c
@@ -633,7 +633,7 @@ static int isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		return -ENOMEM;
 	pci_set_drvdata(pdev, pci_info);
 
-	if (efi_enabled)
+	if (efi_enabled(EFI_RUNTIME_SERVICES))
 		orom = isci_get_efi_var(pdev);
 
 	if (!orom)
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 26ca2ef..314b4f6 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -3165,14 +3165,10 @@ destroy_port(struct lpfc_vport *vport)
 int
 lpfc_get_instance(void)
 {
-	int instance = 0;
-
-	/* Assign an unused number */
-	if (!idr_pre_get(&lpfc_hba_index, GFP_KERNEL))
-		return -1;
-	if (idr_get_new(&lpfc_hba_index, NULL, &instance))
-		return -1;
-	return instance;
+	int ret;
+
+	ret = idr_alloc(&lpfc_hba_index, NULL, 0, 0, GFP_KERNEL);
+	return ret < 0 ? -1 : ret;
 }
 
 /**
diff --git a/drivers/scsi/osd/osd_uld.c b/drivers/scsi/osd/osd_uld.c
index 4375417..0fab6b5 100644
--- a/drivers/scsi/osd/osd_uld.c
+++ b/drivers/scsi/osd/osd_uld.c
@@ -268,18 +268,11 @@ static inline bool _the_same_or_null(const u8 *a1, unsigned a1_len,
 	return 0 == memcmp(a1, a2, a1_len);
 }
 
-struct find_oud_t {
-	const struct osd_dev_info *odi;
-	struct device *dev;
-	struct osd_uld_device *oud;
-} ;
-
-int _mach_odi(struct device *dev, void *find_data)
+static int _match_odi(struct device *dev, const void *find_data)
 {
 	struct osd_uld_device *oud = container_of(dev, struct osd_uld_device,
 						  class_dev);
-	struct find_oud_t *fot = find_data;
-	const struct osd_dev_info *odi = fot->odi;
+	const struct osd_dev_info *odi = find_data;
 
 	if (_the_same_or_null(oud->odi.systemid, oud->odi.systemid_len,
 			      odi->systemid, odi->systemid_len) &&
@@ -287,7 +280,6 @@ int _mach_odi(struct device *dev, void *find_data)
 			      odi->osdname, odi->osdname_len)) {
 		OSD_DEBUG("found device sysid_len=%d osdname=%d\n",
 			  odi->systemid_len, odi->osdname_len);
-		fot->oud = oud;
 		return 1;
 	} else {
 		return 0;
@@ -301,19 +293,19 @@ int _mach_odi(struct device *dev, void *find_data)
  */
 struct osd_dev *osduld_info_lookup(const struct osd_dev_info *odi)
 {
-	struct find_oud_t find = {.odi = odi};
-
-	find.dev = class_find_device(&osd_uld_class, NULL, &find, _mach_odi);
-	if (likely(find.dev)) {
+	struct device *dev = class_find_device(&osd_uld_class, NULL, odi, _match_odi);
+	if (likely(dev)) {
 		struct osd_dev_handle *odh = kzalloc(sizeof(*odh), GFP_KERNEL);
+		struct osd_uld_device *oud = container_of(dev,
+			struct osd_uld_device, class_dev);
 
 		if (unlikely(!odh)) {
-			put_device(find.dev);
+			put_device(dev);
 			return ERR_PTR(-ENOMEM);
 		}
 
-		odh->od = find.oud->od;
-		odh->oud = find.oud;
+		odh->od = oud->od;
+		odh->oud = oud;
 
 		return &odh->od;
 	}
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index f1bf5af..765398c 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -2617,3 +2617,17 @@ void scsi_kunmap_atomic_sg(void *virt)
 	kunmap_atomic(virt);
 }
 EXPORT_SYMBOL(scsi_kunmap_atomic_sg);
+
+void sdev_disable_disk_events(struct scsi_device *sdev)
+{
+	atomic_inc(&sdev->disk_events_disable_depth);
+}
+EXPORT_SYMBOL(sdev_disable_disk_events);
+
+void sdev_enable_disk_events(struct scsi_device *sdev)
+{
+	if (WARN_ON_ONCE(atomic_read(&sdev->disk_events_disable_depth) <= 0))
+		return;
+	atomic_dec(&sdev->disk_events_disable_depth);
+}
+EXPORT_SYMBOL(sdev_enable_disk_events);
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index dac7f8d..0a74b97 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -183,10 +183,10 @@ static struct attribute_group iscsi_endpoint_group = {
 
 #define ISCSI_MAX_EPID -1
 
-static int iscsi_match_epid(struct device *dev, void *data)
+static int iscsi_match_epid(struct device *dev, const void *data)
 {
 	struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev);
-	uint64_t *epid = (uint64_t *) data;
+	const uint64_t *epid = data;
 
 	return *epid == ep->id;
 }
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index be2c9a6..9f0c465 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1391,24 +1391,23 @@ static Sg_device *sg_alloc(struct gendisk *disk, struct scsi_device *scsidp)
 		return ERR_PTR(-ENOMEM);
 	}
 
-	if (!idr_pre_get(&sg_index_idr, GFP_KERNEL)) {
-		printk(KERN_WARNING "idr expansion Sg_device failure\n");
-		error = -ENOMEM;
-		goto out;
-	}
-
+	idr_preload(GFP_KERNEL);
 	write_lock_irqsave(&sg_index_lock, iflags);
 
-	error = idr_get_new(&sg_index_idr, sdp, &k);
-	if (error) {
-		write_unlock_irqrestore(&sg_index_lock, iflags);
-		printk(KERN_WARNING "idr allocation Sg_device failure: %d\n",
-		       error);
-		goto out;
+	error = idr_alloc(&sg_index_idr, sdp, 0, SG_MAX_DEVS, GFP_NOWAIT);
+	if (error < 0) {
+		if (error == -ENOSPC) {
+			sdev_printk(KERN_WARNING, scsidp,
+				    "Unable to attach sg device type=%d, minor number exceeds %d\n",
+				    scsidp->type, SG_MAX_DEVS - 1);
+			error = -ENODEV;
+		} else {
+			printk(KERN_WARNING
+			       "idr allocation Sg_device failure: %d\n", error);
+		}
+		goto out_unlock;
 	}
-
-	if (unlikely(k >= SG_MAX_DEVS))
-		goto overflow;
+	k = error;
 
 	SCSI_LOG_TIMEOUT(3, printk("sg_alloc: dev=%d \n", k));
 	sprintf(disk->disk_name, "sg%d", k);
@@ -1420,25 +1419,17 @@ static Sg_device *sg_alloc(struct gendisk *disk, struct scsi_device *scsidp)
 	sdp->sg_tablesize = queue_max_segments(q);
 	sdp->index = k;
 	kref_init(&sdp->d_ref);
+	error = 0;
 
+out_unlock:
 	write_unlock_irqrestore(&sg_index_lock, iflags);
+	idr_preload_end();
 
-	error = 0;
- out:
 	if (error) {
 		kfree(sdp);
 		return ERR_PTR(error);
 	}
 	return sdp;
-
- overflow:
-	idr_remove(&sg_index_idr, k);
-	write_unlock_irqrestore(&sg_index_lock, iflags);
-	sdev_printk(KERN_WARNING, scsidp,
-		    "Unable to attach sg device type=%d, minor "
-		    "number exceeds %d\n", scsidp->type, SG_MAX_DEVS - 1);
-	error = -ENODEV;
-	goto out;
 }
 
 static int
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 5fc97d2..f2884ee 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -45,6 +45,7 @@
 #include <linux/blkdev.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
+#include <linux/pm_runtime.h>
 #include <asm/uaccess.h>
 
 #include <scsi/scsi.h>
@@ -79,6 +80,11 @@ static DEFINE_MUTEX(sr_mutex);
 static int sr_probe(struct device *);
 static int sr_remove(struct device *);
 static int sr_done(struct scsi_cmnd *);
+static int sr_runtime_suspend(struct device *dev);
+
+static struct dev_pm_ops sr_pm_ops = {
+	.runtime_suspend	= sr_runtime_suspend,
+};
 
 static struct scsi_driver sr_template = {
 	.owner			= THIS_MODULE,
@@ -86,6 +92,7 @@ static struct scsi_driver sr_template = {
 		.name   	= "sr",
 		.probe		= sr_probe,
 		.remove		= sr_remove,
+		.pm		= &sr_pm_ops,
 	},
 	.done			= sr_done,
 };
@@ -131,6 +138,16 @@ static inline struct scsi_cd *scsi_cd(struct gendisk *disk)
 	return container_of(disk->private_data, struct scsi_cd, driver);
 }
 
+static int sr_runtime_suspend(struct device *dev)
+{
+	struct scsi_cd *cd = dev_get_drvdata(dev);
+
+	if (cd->media_present)
+		return -EBUSY;
+	else
+		return 0;
+}
+
 /*
  * The get and put routines for the struct scsi_cd.  Note this entity
  * has a scsi_device pointer and owns a reference to this.
@@ -146,7 +163,8 @@ static inline struct scsi_cd *scsi_cd_get(struct gendisk *disk)
 	kref_get(&cd->kref);
 	if (scsi_device_get(cd->device))
 		goto out_put;
-	goto out;
+	if (!scsi_autopm_get_device(cd->device))
+		goto out;
 
  out_put:
 	kref_put(&cd->kref, sr_kref_release);
@@ -162,6 +180,7 @@ static void scsi_cd_put(struct scsi_cd *cd)
 
 	mutex_lock(&sr_ref_mutex);
 	kref_put(&cd->kref, sr_kref_release);
+	scsi_autopm_put_device(sdev);
 	scsi_device_put(sdev);
 	mutex_unlock(&sr_ref_mutex);
 }
@@ -540,6 +559,8 @@ static int sr_block_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
 	void __user *argp = (void __user *)arg;
 	int ret;
 
+	scsi_autopm_get_device(cd->device);
+
 	mutex_lock(&sr_mutex);
 
 	/*
@@ -571,6 +592,7 @@ static int sr_block_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
 
 out:
 	mutex_unlock(&sr_mutex);
+	scsi_autopm_put_device(cd->device);
 	return ret;
 }
 
@@ -578,7 +600,17 @@ static unsigned int sr_block_check_events(struct gendisk *disk,
 					  unsigned int clearing)
 {
 	struct scsi_cd *cd = scsi_cd(disk);
-	return cdrom_check_events(&cd->cdi, clearing);
+	unsigned int ret;
+
+	if (atomic_read(&cd->device->disk_events_disable_depth) == 0) {
+		scsi_autopm_get_device(cd->device);
+		ret = cdrom_check_events(&cd->cdi, clearing);
+		scsi_autopm_put_device(cd->device);
+	} else {
+		ret = 0;
+	}
+
+	return ret;
 }
 
 static int sr_block_revalidate_disk(struct gendisk *disk)
@@ -586,12 +618,16 @@ static int sr_block_revalidate_disk(struct gendisk *disk)
 	struct scsi_cd *cd = scsi_cd(disk);
 	struct scsi_sense_hdr sshdr;
 
+	scsi_autopm_get_device(cd->device);
+
 	/* if the unit is not ready, nothing more to do */
 	if (scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, &sshdr))
-		return 0;
+		goto out;
 
 	sr_cd_check(&cd->cdi);
 	get_sectorsize(cd);
+out:
+	scsi_autopm_put_device(cd->device);
 	return 0;
 }
 
@@ -718,6 +754,8 @@ static int sr_probe(struct device *dev)
 
 	sdev_printk(KERN_DEBUG, sdev,
 		    "Attached scsi CD-ROM %s\n", cd->cdi.name);
+	scsi_autopm_put_device(cd->device);
+
 	return 0;
 
 fail_put:
@@ -965,6 +1003,8 @@ static int sr_remove(struct device *dev)
 {
 	struct scsi_cd *cd = dev_get_drvdata(dev);
 
+	scsi_autopm_get_device(cd->device);
+
 	blk_queue_prep_rq(cd->device->request_queue, scsi_prep_fn);
 	del_gendisk(cd->disk);
 
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 98156a9..8697447 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -977,7 +977,7 @@ static int check_tape(struct scsi_tape *STp, struct file *filp)
 	struct st_modedef *STm;
 	struct st_partstat *STps;
 	char *name = tape_name(STp);
-	struct inode *inode = filp->f_path.dentry->d_inode;
+	struct inode *inode = file_inode(filp);
 	int mode = TAPE_MODE(inode);
 
 	STp->ready = ST_READY;
@@ -4076,7 +4076,7 @@ static int st_probe(struct device *dev)
 	struct st_modedef *STm;
 	struct st_partstat *STps;
 	struct st_buffer *buffer;
-	int i, dev_num, error;
+	int i, error;
 	char *stp;
 
 	if (SDp->type != TYPE_TAPE)
@@ -4178,27 +4178,17 @@ static int st_probe(struct device *dev)
 	    tpnt->blksize_changed = 0;
 	mutex_init(&tpnt->lock);
 
-	if (!idr_pre_get(&st_index_idr, GFP_KERNEL)) {
-		pr_warn("st: idr expansion failed\n");
-		error = -ENOMEM;
-		goto out_put_disk;
-	}
-
+	idr_preload(GFP_KERNEL);
 	spin_lock(&st_index_lock);
-	error = idr_get_new(&st_index_idr, tpnt, &dev_num);
+	error = idr_alloc(&st_index_idr, tpnt, 0, ST_MAX_TAPES + 1, GFP_NOWAIT);
 	spin_unlock(&st_index_lock);
-	if (error) {
+	idr_preload_end();
+	if (error < 0) {
 		pr_warn("st: idr allocation failed: %d\n", error);
 		goto out_put_disk;
 	}
-
-	if (dev_num > ST_MAX_TAPES) {
-		pr_err("st: Too many tape devices (max. %d).\n", ST_MAX_TAPES);
-		goto out_put_index;
-	}
-
-	tpnt->index = dev_num;
-	sprintf(disk->disk_name, "st%d", dev_num);
+	tpnt->index = error;
+	sprintf(disk->disk_name, "st%d", tpnt->index);
 
 	dev_set_drvdata(dev, tpnt);
 
@@ -4218,9 +4208,8 @@ static int st_probe(struct device *dev)
 
 out_remove_devs:
 	remove_cdevs(tpnt);
-out_put_index:
 	spin_lock(&st_index_lock);
-	idr_remove(&st_index_idr, dev_num);
+	idr_remove(&st_index_idr, tpnt->index);
 	spin_unlock(&st_index_lock);
 out_put_disk:
 	put_disk(disk);
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 0144078..270b3cf 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1410,13 +1410,13 @@ enum {
 
 static const struct hv_vmbus_device_id id_table[] = {
 	/* SCSI guid */
-	{ VMBUS_DEVICE(0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d,
-		       0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f)
-	  .driver_data = SCSI_GUID },
+	{ HV_SCSI_GUID,
+	  .driver_data = SCSI_GUID
+	},
 	/* IDE guid */
-	{ VMBUS_DEVICE(0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44,
-		       0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5)
-	  .driver_data = IDE_GUID },
+	{ HV_IDE_GUID,
+	  .driver_data = IDE_GUID
+	},
 	{ },
 };