Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

d6fb1db0 · Linus Torvalds <[email protected]> · 2010-05-21 10:48:32 -07:00

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (38 commits)
  net: Expose all network devices in a namespaces in sysfs
  hotplug: netns aware uevent_helper
  kobj: Send hotplug events in the proper namespace.
  netlink: Implment netlink_broadcast_filtered
  net/sysfs: Fix the bitrot in network device kobject namespace support
  netns: Teach network device kobjects which namespace they are in.
  kobject: Send hotplug events in all network namespaces
  driver-core: fix Typo in drivers/base/core.c for CONFIG_MODULE
  pci: check caps from sysfs file open to read device dependent config space
  sysfs: add struct file* to bin_attr callbacks
  sysfs: Remove usage of S_BIAS to avoid merge conflict with the vfs tree
  sysfs: Don't use enums in inline function declaration.
  sysfs-namespaces: add a high-level Documentation file
  sysfs: Comment sysfs directory tagging logic
  driver core: Implement ns directory support for device classes.
  sysfs: Implement sysfs_delete_link
  sysfs: Add support for tagged directories with untagged members.
  sysfs: Implement sysfs tagged directory support.
  kobj: Add basic infrastructure for dealing with namespaces.
  sysfs: Remove double free sysfs_get_sb
  ...

Commit: d6fb1db02e02aea98f2d7e121fd30e24c84639d6
Parents: b4e6b097 · a1b3f594

Merge commit. Changes below are compared with the first parent: b4e6b097.

Changes

94 files changed · +1165 −411

File	Status	Add	Del	Content
Documentation/filesystems/sysfs-tagging.txt	added	+42	−0	View file
arch/alpha/kernel/pci-sysfs.c	modified	+5	−3	View file
arch/mips/txx9/generic/setup.c	modified	+2	−2	View file
arch/powerpc/sysdev/mv64x60_pci.c	modified	+2	−2	View file
arch/s390/kernel/ipl.c	modified	+8	−6	View file
drivers/acpi/system.c	modified	+1	−1	View file
drivers/base/Kconfig	modified	+5	−2	View file
drivers/base/class.c	modified	+9	−0	View file
drivers/base/core.c	modified	+100	−30	View file
drivers/base/cpu.c	modified	+1	−1	View file
drivers/base/dd.c	modified	+2	−2	View file
drivers/base/devtmpfs.c	modified	+5	−0	View file
drivers/base/firmware_class.c	modified	+116	−90	View file
drivers/base/module.c	modified	+1	−3	View file
drivers/base/platform.c	modified	+4	−4	View file
drivers/block/loop.c	modified	+9	−1	View file
drivers/firmware/dcdbas.c	modified	+2	−2	View file
drivers/firmware/dell_rbu.c	modified	+5	−5	View file
drivers/firmware/efivars.c	modified	+2	−2	View file
drivers/gpio/gpiolib.c	modified	+1	−1	View file
drivers/gpu/drm/drm_sysfs.c	modified	+3	−2	View file
drivers/md/bitmap.c	modified	+2	−2	View file
drivers/md/md.c	modified	+3	−3	View file
drivers/misc/c2port/core.c	modified	+2	−2	View file
drivers/misc/ds1682.c	modified	+4	−2	View file
drivers/misc/eeprom/at24.c	modified	+4	−2	View file
drivers/misc/eeprom/at25.c	modified	+4	−2	View file
drivers/misc/eeprom/eeprom.c	modified	+2	−1	View file
drivers/misc/eeprom/max6875.c	modified	+1	−1	View file
drivers/net/mlx4/mlx4.h	modified	+1	−0	View file
drivers/net/netxen/netxen_nic_main.c	modified	+7	−4	View file
drivers/net/qlcnic/qlcnic_main.c	modified	+8	−4	View file
drivers/pci/hotplug/acpiphp_ibm.c	modified	+3	−2	View file
drivers/pci/pci-sysfs.c	modified	+32	−13	View file
drivers/pcmcia/cistpl.c	modified	+2	−2	View file
drivers/power/olpc_battery.c	modified	+1	−1	View file
drivers/rapidio/rio-sysfs.c	modified	+4	−2	View file
drivers/rtc/rtc-cmos.c	modified	+4	−2	View file
drivers/rtc/rtc-ds1305.c	modified	+4	−2	View file
drivers/rtc/rtc-ds1307.c	modified	+4	−2	View file
drivers/rtc/rtc-ds1511.c	modified	+6	−4	View file
drivers/rtc/rtc-ds1553.c	modified	+2	−2	View file
drivers/rtc/rtc-ds1742.c	modified	+2	−2	View file
drivers/rtc/rtc-m48t59.c	modified	+2	−2	View file
drivers/rtc/rtc-stk17ta8.c	modified	+2	−2	View file
drivers/rtc/rtc-tx4939.c	modified	+2	−2	View file
drivers/s390/cio/chp.c	modified	+3	−2	View file
drivers/scsi/3w-sas.c	modified	+2	−2	View file
drivers/scsi/arcmsr/arcmsr_attr.c	modified	+6	−3	View file
drivers/scsi/ibmvscsi/ibmvfc.c	modified	+2	−1	View file
drivers/scsi/ipr.c	modified	+6	−3	View file
drivers/scsi/lpfc/lpfc_attr.c	modified	+15	−5	View file
drivers/scsi/qla2xxx/qla_attr.c	modified	+16	−16	View file
drivers/staging/comedi/drivers/quatech_daqp_cs.c	modified	+1	−0	View file
drivers/staging/udlfb/udlfb.c	modified	+2	−1	View file
drivers/usb/core/sysfs.c	modified	+2	−1	View file
drivers/usb/core/usb.c	modified	+1	−1	View file
drivers/video/aty/radeon_base.c	modified	+2	−2	View file
drivers/w1/slaves/w1_ds2431.c	modified	+2	−2	View file
drivers/w1/slaves/w1_ds2433.c	modified	+2	−2	View file
drivers/w1/slaves/w1_ds2760.c	modified	+1	−1	View file
drivers/w1/w1.c	modified	+2	−2	View file
drivers/zorro/zorro-sysfs.c	modified	+1	−1	View file
fs/ramfs/inode.c	modified	+1	−1	View file
fs/sysfs/bin.c	modified	+12	−14	View file
fs/sysfs/dir.c	modified	+90	−24	View file
fs/sysfs/file.c	modified	+10	−7	View file
fs/sysfs/group.c	modified	+3	−3	View file
fs/sysfs/inode.c	modified	+4	−2	View file
fs/sysfs/mount.c	modified	+92	−3	View file
fs/sysfs/symlink.c	modified	+32	−3	View file
fs/sysfs/sysfs.h	modified	+30	−4	View file
include/linux/device.h	modified	+7	−5	View file
include/linux/firmware.h	modified	+1	−0	View file
include/linux/kobject.h	modified	+38	−0	View file
include/linux/kref.h	modified	+0	−1	View file
include/linux/lockdep.h	modified	+8	−0	View file
include/linux/netlink.h	modified	+4	−0	View file
include/linux/ramfs.h	modified	+2	−0	View file
include/linux/sysfs.h	modified	+23	−3	View file
kernel/ksysfs.c	modified	+2	−1	View file
kernel/lockdep.c	modified	+5	−0	View file
kernel/module.c	modified	+1	−1	View file
kernel/user_namespace.c	modified	+2	−2	View file
lib/kobject.c	modified	+115	−0	View file
lib/kobject_uevent.c	modified	+97	−12	View file
lib/kref.c	modified	+2	−13	View file
net/bridge/br_sysfs_br.c	modified	+1	−1	View file
net/core/dev.c	modified	+5	−23	View file
net/core/net-sysfs.c	modified	+47	−16	View file
net/core/net-sysfs.h	modified	+0	−1	View file
net/netlink/af_netlink.c	modified	+19	−2	View file
scripts/checkpatch.pl	modified	+11	−0	View file
security/integrity/ima/ima_iint.c	modified	+2	−2	View file

Only the first 600 diff lines are shown. Download the complete patch.

Documentation/filesystems/sysfs-tagging.txt

View file

diff --git a/Documentation/filesystems/sysfs-tagging.txt b/Documentation/filesystems/sysfs-tagging.txt
new file mode 100644
index 0000000..caaaf12
--- /dev/null
+++ b/Documentation/filesystems/sysfs-tagging.txt
@@ -0,0 +1,42 @@
+Sysfs tagging
+-------------
+
+(Taken almost verbatim from Eric Biederman's netns tagging patch
+commit msg)
+
+The problem.  Network devices show up in sysfs and with the network
+namespace active multiple devices with the same name can show up in
+the same directory, ouch!
+
+To avoid that problem and allow existing applications in network
+namespaces to see the same interface that is currently presented in
+sysfs, sysfs now has tagging directory support.
+
+By using the network namespace pointers as tags to separate out the
+the sysfs directory entries we ensure that we don't have conflicts
+in the directories and applications only see a limited set of
+the network devices.
+
+Each sysfs directory entry may be tagged with zero or one
+namespaces.  A sysfs_dirent is augmented with a void *s_ns.  If a
+directory entry is tagged, then sysfs_dirent->s_flags will have a
+flag between KOBJ_NS_TYPE_NONE and KOBJ_NS_TYPES, and s_ns will
+point to the namespace to which it belongs.
+
+Each sysfs superblock's sysfs_super_info contains an array void
+*ns[KOBJ_NS_TYPES].  When a a task in a tagging namespace
+kobj_nstype first mounts sysfs, a new superblock is created.  It
+will be differentiated from other sysfs mounts by having its
+s_fs_info->ns[kobj_nstype] set to the new namespace.  Note that
+through bind mounting and mounts propagation, a task can easily view
+the contents of other namespaces' sysfs mounts.  Therefore, when a
+namespace exits, it will call kobj_ns_exit() to invalidate any
+sysfs_dirent->s_ns pointers pointing to it.
+
+Users of this interface:
+- define a type in the kobj_ns_type enumeration.
+- call kobj_ns_type_register() with its kobj_ns_type_operations which has
+  - current_ns() which returns current's namespace
+  - netlink_ns() which returns a socket's namespace
+  - initial_ns() which returns the initial namesapce
+- call kobj_ns_exit() when an individual tag is no longer valid

arch/alpha/kernel/pci-sysfs.c

View file

diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c
index d979e7c..a5fffc8 100644
--- a/arch/alpha/kernel/pci-sysfs.c
+++ b/arch/alpha/kernel/pci-sysfs.c
@@ -53,6 +53,7 @@ static int __pci_mmap_fits(struct pci_dev *pdev, int num,
 
 /**
  * pci_mmap_resource - map a PCI resource into user memory space
+ * @filp: open sysfs file
  * @kobj: kobject for mapping
  * @attr: struct bin_attribute for the file being mapped
  * @vma: struct vm_area_struct passed into the mmap
@@ -60,7 +61,8 @@ static int __pci_mmap_fits(struct pci_dev *pdev, int num,
  *
  * Use the bus mapping routines to map a PCI resource into userspace.
  */
-static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
+static int pci_mmap_resource(struct file *filp, struct kobject *kobj,
+			     struct bin_attribute *attr,
 			     struct vm_area_struct *vma, int sparse)
 {
 	struct pci_dev *pdev = to_pci_dev(container_of(kobj,
@@ -89,14 +91,14 @@ static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
 	return hose_mmap_page_range(pdev->sysdata, vma, mmap_type, sparse);
 }
 
-static int pci_mmap_resource_sparse(struct kobject *kobj,
+static int pci_mmap_resource_sparse(struct file *filp, struct kobject *kobj,
 				    struct bin_attribute *attr,
 				    struct vm_area_struct *vma)
 {
 	return pci_mmap_resource(kobj, attr, vma, 1);
 }
 
-static int pci_mmap_resource_dense(struct kobject *kobj,
+static int pci_mmap_resource_dense(struct file *filp, struct kobject *kobj,
 				   struct bin_attribute *attr,
 				   struct vm_area_struct *vma)
 {

arch/mips/txx9/generic/setup.c

View file

diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index adc6929..575d219 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -905,7 +905,7 @@ struct txx9_sramc_sysdev {
 	void __iomem *base;
 };
 
-static ssize_t txx9_sram_read(struct kobject *kobj,
+static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
 			      struct bin_attribute *bin_attr,
 			      char *buf, loff_t pos, size_t size)
 {
@@ -920,7 +920,7 @@ static ssize_t txx9_sram_read(struct kobject *kobj,
 	return size;
 }
 
-static ssize_t txx9_sram_write(struct kobject *kobj,
+static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
 			       struct bin_attribute *bin_attr,
 			       char *buf, loff_t pos, size_t size)
 {

arch/powerpc/sysdev/mv64x60_pci.c

View file

diff --git a/arch/powerpc/sysdev/mv64x60_pci.c b/arch/powerpc/sysdev/mv64x60_pci.c
index 1456015..198f288 100644
--- a/arch/powerpc/sysdev/mv64x60_pci.c
+++ b/arch/powerpc/sysdev/mv64x60_pci.c
@@ -24,7 +24,7 @@
 #define MV64X60_VAL_LEN_MAX		11
 #define MV64X60_PCICFG_CPCI_HOTSWAP	0x68
 
-static ssize_t mv64x60_hs_reg_read(struct kobject *kobj,
+static ssize_t mv64x60_hs_reg_read(struct file *filp, struct kobject *kobj,
 				   struct bin_attribute *attr, char *buf,
 				   loff_t off, size_t count)
 {
@@ -45,7 +45,7 @@ static ssize_t mv64x60_hs_reg_read(struct kobject *kobj,
 	return sprintf(buf, "0x%08x\n", v);
 }
 
-static ssize_t mv64x60_hs_reg_write(struct kobject *kobj,
+static ssize_t mv64x60_hs_reg_write(struct file *filp, struct kobject *kobj,
 				    struct bin_attribute *attr, char *buf,
 				    loff_t off, size_t count)
 {

arch/s390/kernel/ipl.c

View file

diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 72c8b0d..a689070 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -403,8 +403,9 @@ static ssize_t sys_ipl_device_show(struct kobject *kobj,
 static struct kobj_attribute sys_ipl_device_attr =
 	__ATTR(device, S_IRUGO, sys_ipl_device_show, NULL);
 
-static ssize_t ipl_parameter_read(struct kobject *kobj, struct bin_attribute *attr,
-				  char *buf, loff_t off, size_t count)
+static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj,
+				  struct bin_attribute *attr, char *buf,
+				  loff_t off, size_t count)
 {
 	return memory_read_from_buffer(buf, count, &off, IPL_PARMBLOCK_START,
 					IPL_PARMBLOCK_SIZE);
@@ -419,8 +420,9 @@ static struct bin_attribute ipl_parameter_attr = {
 	.read = &ipl_parameter_read,
 };
 
-static ssize_t ipl_scp_data_read(struct kobject *kobj, struct bin_attribute *attr,
-				 char *buf, loff_t off, size_t count)
+static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj,
+				 struct bin_attribute *attr, char *buf,
+				 loff_t off, size_t count)
 {
 	unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len;
 	void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data;
@@ -694,7 +696,7 @@ static struct kobj_attribute sys_reipl_ccw_vmparm_attr =
 
 /* FCP reipl device attributes */
 
-static ssize_t reipl_fcp_scpdata_read(struct kobject *kobj,
+static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj,
 				      struct bin_attribute *attr,
 				      char *buf, loff_t off, size_t count)
 {
@@ -704,7 +706,7 @@ static ssize_t reipl_fcp_scpdata_read(struct kobject *kobj,
 	return memory_read_from_buffer(buf, count, &off, scp_data, size);
 }
 
-static ssize_t reipl_fcp_scpdata_write(struct kobject *kobj,
+static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj,
 				       struct bin_attribute *attr,
 				       char *buf, loff_t off, size_t count)
 {

drivers/acpi/system.c

View file

diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index e35525b..c79e789 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -71,7 +71,7 @@ struct acpi_table_attr {
 	struct list_head node;
 };
 
-static ssize_t acpi_table_show(struct kobject *kobj,
+static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
 			       struct bin_attribute *bin_attr, char *buf,
 			       loff_t offset, size_t count)
 {

drivers/base/Kconfig

View file

diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index fd52c48..ef38aff 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -18,9 +18,9 @@ config UEVENT_HELPER_PATH
 
 config DEVTMPFS
 	bool "Maintain a devtmpfs filesystem to mount at /dev"
-	depends on HOTPLUG && SHMEM && TMPFS
+	depends on HOTPLUG
 	help
-	  This creates a tmpfs filesystem instance early at bootup.
+	  This creates a tmpfs/ramfs filesystem instance early at bootup.
 	  In this filesystem, the kernel driver core maintains device
 	  nodes with their default names and permissions for all
 	  registered devices with an assigned major/minor number.
@@ -33,6 +33,9 @@ config DEVTMPFS
 	  functional /dev without any further help. It also allows simple
 	  rescue systems, and reliably handles dynamic major/minor numbers.
 
+	  Notice: if CONFIG_TMPFS isn't enabled, the simpler ramfs
+	  file system will be used instead.
+
 config DEVTMPFS_MOUNT
 	bool "Automount devtmpfs at /dev, after the kernel mounted the rootfs"
 	depends on DEVTMPFS

drivers/base/class.c

View file

diff --git a/drivers/base/class.c b/drivers/base/class.c
index 9c6a0d6..8e231d0 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -63,6 +63,14 @@ static void class_release(struct kobject *kobj)
 	kfree(cp);
 }
 
+static const struct kobj_ns_type_operations *class_child_ns_type(struct kobject *kobj)
+{
+	struct class_private *cp = to_class(kobj);
+	struct class *class = cp->class;
+
+	return class->ns_type;
+}
+
 static const struct sysfs_ops class_sysfs_ops = {
 	.show	= class_attr_show,
 	.store	= class_attr_store,
@@ -71,6 +79,7 @@ static const struct sysfs_ops class_sysfs_ops = {
 static struct kobj_type class_ktype = {
 	.sysfs_ops	= &class_sysfs_ops,
 	.release	= class_release,
+	.child_ns_type	= class_child_ns_type,
 };
 
 /* Hotplug events for classes go to the class class_subsys */

drivers/base/core.c

View file

diff --git a/drivers/base/core.c b/drivers/base/core.c
index b56a0ba..9630fbd 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -20,7 +20,6 @@
 #include <linux/notifier.h>
 #include <linux/genhd.h>
 #include <linux/kallsyms.h>
-#include <linux/semaphore.h>
 #include <linux/mutex.h>
 #include <linux/async.h>
 
@@ -132,9 +131,21 @@ static void device_release(struct kobject *kobj)
 	kfree(p);
 }
 
+static const void *device_namespace(struct kobject *kobj)
+{
+	struct device *dev = to_dev(kobj);
+	const void *ns = NULL;
+
+	if (dev->class && dev->class->ns_type)
+		ns = dev->class->namespace(dev);
+
+	return ns;
+}
+
 static struct kobj_type device_ktype = {
 	.release	= device_release,
 	.sysfs_ops	= &dev_sysfs_ops,
+	.namespace	= device_namespace,
 };
 
 
@@ -559,10 +570,10 @@ void device_initialize(struct device *dev)
 	dev->kobj.kset = devices_kset;
 	kobject_init(&dev->kobj, &device_ktype);
 	INIT_LIST_HEAD(&dev->dma_pools);
-	init_MUTEX(&dev->sem);
+	mutex_init(&dev->mutex);
+	lockdep_set_novalidate_class(&dev->mutex);
 	spin_lock_init(&dev->devres_lock);
 	INIT_LIST_HEAD(&dev->devres_head);
-	device_init_wakeup(dev, 0);
 	device_pm_init(dev);
 	set_dev_node(dev, -1);
 }
@@ -596,11 +607,59 @@ static struct kobject *virtual_device_parent(struct device *dev)
 	return virtual_dir;
 }
 
-static struct kobject *get_device_parent(struct device *dev,
-					 struct device *parent)
+struct class_dir {
+	struct kobject kobj;
+	struct class *class;
+};
+
+#define to_class_dir(obj) container_of(obj, struct class_dir, kobj)
+
+static void class_dir_release(struct kobject *kobj)
+{
+	struct class_dir *dir = to_class_dir(kobj);
+	kfree(dir);
+}
+
+static const
+struct kobj_ns_type_operations *class_dir_child_ns_type(struct kobject *kobj)
 {
+	struct class_dir *dir = to_class_dir(kobj);
+	return dir->class->ns_type;
+}
+
+static struct kobj_type class_dir_ktype = {
+	.release	= class_dir_release,
+	.sysfs_ops	= &kobj_sysfs_ops,
+	.child_ns_type	= class_dir_child_ns_type
+};
+
+static struct kobject *
+class_dir_create_and_add(struct class *class, struct kobject *parent_kobj)
+{
+	struct class_dir *dir;
 	int retval;
 
+	dir = kzalloc(sizeof(*dir), GFP_KERNEL);
+	if (!dir)
+		return NULL;
+
+	dir->class = class;
+	kobject_init(&dir->kobj, &class_dir_ktype);
+
+	dir->kobj.kset = &class->p->class_dirs;
+
+	retval = kobject_add(&dir->kobj, parent_kobj, "%s", class->name);
+	if (retval < 0) {
+		kobject_put(&dir->kobj);
+		return NULL;
+	}
+	return &dir->kobj;
+}
+
+
+static struct kobject *get_device_parent(struct device *dev,
+					 struct device *parent)
+{
 	if (dev->class) {
 		static DEFINE_MUTEX(gdp_mutex);
 		struct kobject *kobj = NULL;
@@ -635,18 +694,7 @@ static struct kobject *get_device_parent(struct device *dev,
 		}
 
 		/* or create a new class-directory at the parent device */
-		k = kobject_create();
-		if (!k) {
-			mutex_unlock(&gdp_mutex);
-			return NULL;
-		}
-		k->kset = &dev->class->p->class_dirs;
-		retval = kobject_add(k, parent_kobj, "%s", dev->class->name);
-		if (retval < 0) {
-			mutex_unlock(&gdp_mutex);
-			kobject_put(k);
-			return NULL;
-		}
+		k = class_dir_create_and_add(dev->class, parent_kobj);
 		/* do not emit an uevent for this simple "glue" directory */
 		mutex_unlock(&gdp_mutex);
 		return k;
@@ -738,7 +786,7 @@ out_device:
 out_busid:
 	if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
 	    device_is_not_partition(dev))
-		sysfs_remove_link(&dev->class->p->class_subsys.kobj,
+		sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj,
 				  dev_name(dev));
 #else
 	/* link in the class directory pointing to the device */
@@ -756,7 +804,7 @@ out_busid:
 	return 0;
 
 out_busid:
-	sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev_name(dev));
+	sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj, dev_name(dev));
 #endif
 
 out_subsys:
@@ -784,13 +832,13 @@ static void device_remove_class_symlinks(struct device *dev)
 
 	if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
 	    device_is_not_partition(dev))
-		sysfs_remove_link(&dev->class->p->class_subsys.kobj,
+		sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj,
 				  dev_name(dev));
 #else
 	if (dev->parent && device_is_not_partition(dev))
 		sysfs_remove_link(&dev->kobj, "device");
 
-	sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev_name(dev));
+	sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj, dev_name(dev));
 #endif
 
 	sysfs_remove_link(&dev->kobj, "subsystem");
@@ -1372,7 +1420,7 @@ struct device *__root_device_register(const char *name, struct module *owner)
 		return ERR_PTR(err);
 	}
 
-#ifdef CONFIG_MODULE	/* gotta find a "cleaner" way to do this */
+#ifdef CONFIG_MODULES	/* gotta find a "cleaner" way to do this */
 	if (owner) {
 		struct module_kobject *mk = &owner->mkobj;
 
@@ -1576,6 +1624,14 @@ int device_rename(struct device *dev, char *new_name)
 		goto out;
 	}
 
+#ifndef CONFIG_SYSFS_DEPRECATED
+	if (dev->class) {
+		error = sysfs_rename_link(&dev->class->p->class_subsys.kobj,
+			&dev->kobj, old_device_name, new_name);
+		if (error)
+			goto out;
+	}
+#endif
 	error = kobject_rename(&dev->kobj, new_name);
 	if (error)
 		goto out;
@@ -1590,11 +1646,6 @@ int device_rename(struct device *dev, char *new_name)
 						  new_class_name);
 		}
 	}
-#else
-	if (dev->class) {
-		error = sysfs_rename_link(&dev->class->p->class_subsys.kobj,
-					  &dev->kobj, old_device_name, new_name);
-	}
 #endif
 
 out:
@@ -1735,10 +1786,25 @@ EXPORT_SYMBOL_GPL(device_move);
  */
 void device_shutdown(void)
 {
-	struct device *dev, *devn;
+	struct device *dev;
+
+	spin_lock(&devices_kset->list_lock);
+	/*
+	 * Walk the devices list backward, shutting down each in turn.
+	 * Beware that device unplug events may also start pulling
+	 * devices offline, even as the system is shutting down.
+	 */
+	while (!list_empty(&devices_kset->list)) {
+		dev = list_entry(devices_kset->list.prev, struct device,
+				kobj.entry);
+		get_device(dev);
+		/*
+		 * Make sure the device is off the kset list, in the
+		 * event that dev->*->shutdown() doesn't remove it.
+		 */
+		list_del_init(&dev->kobj.entry);
+		spin_unlock(&devices_kset->list_lock);
 
-	list_for_each_entry_safe_reverse(dev, devn, &devices_kset->list,
-				kobj.entry) {
 		if (dev->bus && dev->bus->shutdown) {
 			dev_dbg(dev, "shutdown\n");
 			dev->bus->shutdown(dev);
@@ -1746,6 +1812,10 @@ void device_shutdown(void)
 			dev_dbg(dev, "shutdown\n");
 			dev->driver->shutdown(dev);
 		}
+		put_device(dev);
+
+		spin_lock(&devices_kset->list_lock);
 	}
+	spin_unlock(&devices_kset->list_lock);
 	async_synchronize_full();
 }

drivers/base/cpu.c

View file

diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index f35719a..251acea 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -186,7 +186,7 @@ static ssize_t print_cpus_offline(struct sysdev_class *class,
 	/* display offline cpus < nr_cpu_ids */
 	if (!alloc_cpumask_var(&offline, GFP_KERNEL))
 		return -ENOMEM;
-	cpumask_complement(offline, cpu_online_mask);
+	cpumask_andnot(offline, cpu_possible_mask, cpu_online_mask);
 	n = cpulist_scnprintf(buf, len, offline);
 	free_cpumask_var(offline);
 

drivers/base/dd.c

View file

diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index c89291f..503c262 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -40,11 +40,11 @@ static void driver_bound(struct device *dev)
 	pr_debug("driver: '%s': %s: bound to device '%s'\n", dev_name(dev),
 		 __func__, dev->driver->name);
 
+	klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices);
+
 	if (dev->bus)
 		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
 					     BUS_NOTIFY_BOUND_DRIVER, dev);
-
-	klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices);
 }
 
 static int driver_sysfs_add(struct device *dev)

drivers/base/devtmpfs.c

View file

diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 057cf11..af06001 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -20,6 +20,7 @@
 #include <linux/namei.h>
 #include <linux/fs.h>
 #include <linux/shmem_fs.h>
+#include <linux/ramfs.h>
 #include <linux/cred.h>
 #include <linux/sched.h>
 #include <linux/init_task.h>
@@ -45,7 +46,11 @@ __setup("devtmpfs.mount=", mount_param);
 static int dev_get_sb(struct file_system_type *fs_type, int flags,
 		      const char *dev_name, void *data, struct vfsmount *mnt)
 {
+#ifdef CONFIG_TMPFS
 	return get_sb_single(fs_type, flags, data, shmem_fill_super, mnt);
+#else
+	return get_sb_single(fs_type, flags, data, ramfs_fill_super, mnt);
+#endif
 }
 
 static struct file_system_type dev_fs_type = {

drivers/base/firmware_class.c

View file

diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 985da11..3f093b0 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -27,6 +27,52 @@ MODULE_AUTHOR("Manuel Estrada Sainz");
 MODULE_DESCRIPTION("Multi purpose firmware loading support");
 MODULE_LICENSE("GPL");
 
+/* Builtin firmware support */
+
+#ifdef CONFIG_FW_LOADER
+
+extern struct builtin_fw __start_builtin_fw[];
+extern struct builtin_fw __end_builtin_fw[];
+
+static bool fw_get_builtin_firmware(struct firmware *fw, const char *name)
+{
+	struct builtin_fw *b_fw;
+
+	for (b_fw = __start_builtin_fw; b_fw != __end_builtin_fw; b_fw++) {
+		if (strcmp(name, b_fw->name) == 0) {
+			fw->size = b_fw->size;
+			fw->data = b_fw->data;
+			return true;
+		}
+	}
+
+	return false;
+}
+
+static bool fw_is_builtin_firmware(const struct firmware *fw)
+{
+	struct builtin_fw *b_fw;
+
+	for (b_fw = __start_builtin_fw; b_fw != __end_builtin_fw; b_fw++)
+		if (fw->data == b_fw->data)
+			return true;
+
+	return false;
+}
+
+#else /* Module case - no builtin firmware support */
+
+static inline bool fw_get_builtin_firmware(struct firmware *fw, const char *name)
+{
+	return false;
+}
+
+static inline bool fw_is_builtin_firmware(const struct firmware *fw)
+{
+	return false;
+}
+#endif
+
 enum {
 	FW_STATUS_LOADING,
 	FW_STATUS_DONE,
@@ -40,7 +86,6 @@ static int loading_timeout = 60;	/* In seconds */
 static DEFINE_MUTEX(fw_lock);
 
 struct firmware_priv {
-	char *fw_id;
 	struct completion completion;