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* driver core: Suppress sysfs warnings for device_rename().Cornelia Huck2008-07-22
| | | | | | | | | | | | | driver core: Suppress sysfs warnings for device_rename(). Renaming network devices to an already existing name is not something we want sysfs to print a scary warning for, since the callers can deal with this correctly. So let's introduce sysfs_create_link_nowarn() which gets rid of the common warning. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* kobject: Transmit return value of call_usermodehelper() to callerWang Chen2008-07-22
| | | | | | | | | | | | | | | | kobject_uevent_env() drops the return value of call_usermodehelper(). It will make upper caller, such as dm_send_uevents(), to lose error information. BTW, Previously kobject_uevent_env() transmitted return of call_usermodehelper() to callers, but commit 5f123fbd80f4f788554636f02bf73e40f914e0d6 "[PATCH] merge kobject_uevent and kobject_hotplug" removed it. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Cc: Kay Sievers <kay.sievers@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* sysfs-rules.txt: reword API stability statementNathan Lynch2008-07-22
| | | | | | | | | | | | | | | | | The first paragraph of this document implies that user space developers shouldn't use sysfs at all, but then it goes on to describe rules that developers should follow when accessing sysfs. Not only is this somewhat self-contradictory, it has been shown to discourage developers from using established sysfs interfaces. A note of caution is more appropriate than a blanket "sysfs will never be stable" assertion. Signed-off-by: Nathan Lynch <ntl@pobox.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* debugfs: Implement debugfs_remove_recursive()Haavard Skinnemoen2008-07-22
| | | | | | | | | | | | | | | | | | | | | debugfs_remove_recursive() will remove a dentry and all its children. Drivers can use this to zap their whole debugfs tree so that they don't need to keep track of every single debugfs dentry they created. It may fail to remove the whole tree in certain cases: sh-3.2# rmmod atmel-mci < /sys/kernel/debug/mmc0/ios/clock mmc0: card b368 removed atmel_mci atmel_mci.0: Lost dma0chan1, falling back to PIO sh-3.2# ls /sys/kernel/debug/mmc0/ ios But I'm not sure if that case can be handled in any sane manner. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Cc: Pierre Ossman <drzeus-list@drzeus.cx> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* HOWTO: change email addresses of James in HOWTOTsugikazu Shibata2008-07-22
| | | | | | Signed-off-by: Tsugikazu Shibata <tshibata@ab.jp.nec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* always enable FW_LOADER unless EMBEDDED=yAdrian Bunk2008-07-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | James Bottomley recently discovered that we have {request,release}_firmware() dummies for the case of the actual functions not being available and has a fix for the bug that was actually causing build errors for built-in users with CONFIG_FW_LOADER=m. But now missing selects on FW_LOADER are no longer visible at compile-time at all and can become runtime problems. FW_LOADER is infrastructure with relatively small codesize we can safely enable for everyone, and only for people who really need small kernels (and can be expected to know what they are doing) it matters being able to disable it. This patch therefore always sets FW_LOADER=y and allows users only to disable it with EMBEDDED=y. As a bonus, we can then get rid of all "select FW_LOADER" plus the due to it required "depends on HOTPLUG" which removes some complexity from our Kconfig files. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* uio-howto.tmpl: use unique output namesMike Frysinger2008-07-22
| | | | | | | | | | | | | The Userspace I/O HOWTO template sets two different sections with the same html output name (about.html). This clearly won't work, so change the first one to a unique "aboutthis.html" to prevent clobbering. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Hans J. Koch <hjk@linutronix.de> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* uio-howto.tmpl: use standard copyright/legal markingsMike Frysinger2008-07-22
| | | | | | | | | | | | | The Userspace I/O HOWTO document uses straight <sect1> tags and plain text to describe copyright/legal information. It should instead use the <copyright> and <legalnotice> tags like all other documents in the kernel. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Hans J. Koch <hjk@linutronix.de> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* sysfs: don't call notify_changeMiklos Szeredi2008-07-22
| | | | | | | | | | | | | | sysfs_chmod_file() calls notify_change() to change the permission bits on a sysfs file. Replace with explicit call to sysfs_setattr() and fsnotify_change(). This is equivalent, except that security_inode_setattr() is not called. This function is called by drivers, so the security checks do not make any sense. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* sysdev: fix debugging statements in registration code.Ben Dooks2008-07-22
| | | | | | | | | | | | | | | | | | | | | The systdev_class_register() and sysdev_register() functions have pr_debug() statements which are enabled when the user selects the driver core debug. Both of these routines do not produce the correct output, as they make assumptions about data which has not been initialised. In sysdev_class_register() the code uses the kobject_name(&cls->kset.kobj) at the start of the function, but this is not setup until later in the same call. Change this to use cls->name which is passed in from the caller. The sysdev_register() function tries to get the name of the sysdev by kobject_name(&sysdev->kobj), but that isn't setup until later in the same function so change this message to use the name of the sysdev's class and add another message once the name is initialised. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* kobject: should use kobject_put() in kset-exampleLi Zefan2008-07-22
| | | | | | | | | We should call kobject_put() instead of kfree() if kobject_init_and_add() returns an error, shouldn't we? Don't set up a bad example ;) Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* kobject: reorder kobject to save space on 64 bit buildsRichard Kennedy2008-07-22
| | | | | | | | | | reorder kobject to save space on 64 bit builds. shrinks from 72 to 64 bytes & moves allocated kobject to a smaller slab. Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* UIO: minor style and comment fixesUwe Kleine-König2008-07-22
| | | | | Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> Signed-off-by: Hans J. Koch <hjk@linutronix.de>
* UIO: add generic UIO platform driverUwe Kleine-König2008-07-22
| | | | | | | | | | | | | This patch adds a generic UIO platform driver. It eliminates the need for a dedicated kernel module for simple platform devices. Users only need to implement their irq handler in platform code and fill a struct uio_info there. This helps avoiding code duplication as UIO platform drivers often share a lot of common code. Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> Signed-off-by: Hans J. Koch <hjk@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* UIO: Add write function to allow irq maskingHans J. Koch2008-07-22
| | | | | | | | | | | | | | Sometimes it is necessary to enable/disable the interrupt of a UIO device from the userspace part of the driver. With this patch, the UIO kernel driver can implement an "irqcontrol()" function that does this. Userspace can write an s32 value to /dev/uioX (usually 0 or 1 to turn the irq off or on). The UIO core will then call the driver's irqcontrol function. Signed-off-by: Hans J. Koch <hjk@linutronix.de> Acked-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> Acked-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* UIO: fix UIO Kconfig dependenciesUwe Kleine-König2008-07-22
| | | | | | | | | | | ae210f188614bb3d1ee3f19c64e28e3cdd44877c introduced a big "if UIO"/"endif" where all uio drivers are defined. So know there is no need for them to depend explicitly on UIO. Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> Signed-off-by: Hans J. Koch <hjk@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* pnp: add acpi:* modalias entriesKay Sievers2008-07-22
| | | | | | | | | | | | | Along with the non-modalias conformant "pnp:*" aliases, we add "acpi:*" entries to PNP drivers, to allow module autoloading by ACPI PNP device entries, which export proper modalias information, without any specific userspace modprobe mangling. Cc: Adam Belay <ambx1@neo.rr.com> Cc: Thomas Renninger <trenn@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* driver core: fix a lot of printk usages of bus_idGreg Kroah-Hartman2008-07-22
| | | | | | | | | | We have the dev_printk() variants for this kind of thing, use them instead of directly trying to access the bus_id field of struct device. This is done in order to remove bus_id entirely. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* driver core: remove DEVICE_ID_SIZE defineGreg Kroah-Hartman2008-07-22
| | | | | | | | | There is no such thing as a "device id size" in the driver core, so remove the define and fix up any users of this odd define in the rest of the kernel. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* driver core: remove DEVICE_NAME_SIZE defineKay Sievers2008-07-22
| | | | | | | | | | There is no such thing as a "device name size" in the driver core, so remove the define and fix up any users of this odd define in the rest of the kernel. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* driver core: remove KOBJ_NAME_LEN defineKay Sievers2008-07-22
| | | | | | | | | Kobjects do not have a limit in name size since a while, so stop pretending that they do. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* class: change internal semaphore to a mutexDave Young2008-07-22
| | | | | | | | | | | | | | | | Now that the lockdep infrastructure in the class core is in place, we should be able to properly change the internal class semaphore to be a mutex. David wrote the original patch, and Greg fixed it up to apply properly due to all of the recent changes in this area. From: Dave Young <hidave.darkstar@gmail.com> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* class: add lockdep infrastructureMatthew Wilcox2008-07-22
| | | | | | | | | | | | | | | | | | This adds the infrastructure to properly handle lockdep issues when the internal class semaphore is changed to a mutex. Matthew wrote the original patch, and Greg fixed it up to work properly with the class_create() function. From: Matthew Wilcox <matthew@wil.cx> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Dave Young <hidave.darkstar@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* class: fix docbook comments for class_private structureGreg Kroah-Hartman2008-07-22
| | | | | | | | Removes a field that has been deleted, and adds a description fo the class_dirs field which was previously undocumented. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* class: rename "sem" to "class_sem" in internal class structureGreg Kroah-Hartman2008-07-22
| | | | | | | | | | | This renames the struct class "sem" field to be "class_sem" to make things easier when struct bus_type and struct class merge in the future. It also makes grepping for fields easier as well. Based on an idea from Kay. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* class: rename "subsys" to "class_subsys" in internal class structureGreg Kroah-Hartman2008-07-22
| | | | | | | | | | | This renames the struct class "subsys" field to be "class_subsys" to make things easier when struct bus_type and struct class merge in the future. It also makes grepping for fields easier as well. Based on an idea from Kay. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* class: rename "interfaces" to "class_interfaces" in internal class structureGreg Kroah-Hartman2008-07-22
| | | | | | | | | | | | This renames the struct class "interfaces" field to be "class_interfaces" to make things easier when struct bus_type and struct class merge in the future. It also makes grepping for fields easier as well. Based on an idea from Kay. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* class: rename "devices" to "class_devices" in internal class structureGreg Kroah-Hartman2008-07-22
| | | | | | | | | | | This renames the struct class "devices" field to be "class_devices" to make things easier when struct bus_type and struct class merge in the future. It also makes grepping for fields easier as well. Based on an idea from Kay. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* class: move driver core specific parts to a private structureGreg Kroah-Hartman2008-07-22
| | | | | | | | | | | This moves the portions of struct class that are dynamic (kobject and lock and lists) out of the main structure and into a dynamic, private, structure. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* bluetooth: remove improper bluetooth class symlinks.Greg Kroah-Hartman2008-07-22
| | | | | | | | | | | | Don't create symlinks in a class to a device that is not owned by the class. If the bluetooth subsystem really wants to point to all of the devices it controls, it needs to create real devices, not fake symlinks. Cc: Maxim Krasnyansky <maxk@qualcomm.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* infiniband: make cm_device use a struct device and not a kobject.Greg Kroah-Hartman2008-07-22
| | | | | | | | | | | | | | | | This object really should be a struct device, or at least contain a pointer to a struct device, as it is trying to create a separate device tree outside of the main device tree. This patch fixes this problem. It is needed for the class core rework that is being done in the driver core. Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Roland Dreier <rolandd@cisco.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* infiniband: rename "device" to "ib_device" in cm_deviceGreg Kroah-Hartman2008-07-22
| | | | | | | | | | | | | | This pointer really is a struct ib_device, not a struct device, so name it properly to help prevent confusion. This makes the followon patch in this series much smaller and easier to understand as well. Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Roland Dreier <rolandd@cisco.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Acked-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* block: make /proc/partitions and /proc/diskstats use class_find_device()Greg Kroah-Hartman2008-07-22
| | | | | | | | Use the proper class iterator function instead of mucking around in the internals of the class structures. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* block: move header for /proc/partitions to seq_startGreg Kroah-Hartman2008-07-22
| | | | | | | | | The seq_start call is the better place for the header for the file, that way we don't have to be mucking in the class structure to try to figure out if this is the first partition or not. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* block: make proc files seq_start use the class_find_device()Greg Kroah-Hartman2008-07-22
| | | | | | | | Use the proper class iterator function instead of mucking around in the internals of the class structures. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* block: make /proc/diskstats only build if CONFIG_PROC_FS is enabledRandy Dunlap2008-07-22
| | | | | | | | | | | These functions are only needed if CONFIG_PROC_FS is enabled, so save the space when it is not. This also makes it easier for a patch later in this series to work properly if CONFIG_PROC_FS is not enabled. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* block: make blk_lookup_devt use the class iterator functionGreg Kroah-Hartman2008-07-22
| | | | | | | | Use the proper class iterator function instead of mucking around in the internals of the class structures. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* block: make printk_partition use the class iterator functionGreg Kroah-Hartman2008-07-22
| | | | | | | | Use the proper class iterator function instead of mucking around in the internals of the class structures. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* block: fix compiler warning in genhd.cGreg Kroah-Hartman2008-07-22
| | | | | | | Warn if something really bad happens if we can't create this link. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Driver Core: add ability for class_find_device to start in middle of listGreg Kroah-Hartman2008-07-22
| | | | | | | | | | | | | | | This mirrors the functionality that driver_find_device has as well. We add a start variable, and all callers of the function are fixed up at the same time. The block layer will be using this new functionality in a follow-on patch. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Driver Core: add ability for class_for_each_device to start in middle of listGreg Kroah-Hartman2008-07-22
| | | | | | | | | | | | | | | This mirrors the functionality that driver_for_each_device has as well. We add a start variable, and all callers of the function are fixed up at the same time. The block layer will be using this new functionality in a follow-on patch. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* device create: convert device_create_drvdata to device_createGreg Kroah-Hartman2008-07-22
| | | | | | | | | | Now that device_create() has been audited, rename things back to the original call to be sane. Keep the device_create_drvdata macro around to make merges easier. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* driver core: remove device_create()Greg Kroah-Hartman2008-07-22
| | | | | | | | There are no more users of this, and it is racy. Use device_create_drvdata() or device_create_vargs() instead. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* device create: x86: convert device_create to device_create_drvdataGreg Kroah-Hartman2008-07-22
| | | | | | | | | | | device_create() is race-prone, so use the race-free device_create_drvdata() instead as device_create() is going away. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* device create: usb: convert device_create to device_create_drvdataGreg Kroah-Hartman2008-07-22
| | | | | | | | device_create() is race-prone, so use the race-free device_create_drvdata() instead as device_create() is going away. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* device create: spi: convert device_create to device_create_drvdataDavid Brownell2008-07-22
| | | | | | | | | | | | | Switch over to use the shiny new device_create_drvdata() call instead of the original device_create() calls, so this continues to work after device_create() is removed. Note that this driver never had the race which motivated removing the original call; it locked correctly. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* device create: sound: convert device_create to device_create_drvdataGreg Kroah-Hartman2008-07-22
| | | | | | | | | device_create() is race-prone, so use the race-free device_create_drvdata() instead as device_create() is going away. Cc: Jaroslav Kysela <perex@perex.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* device create: scsi: convert device_create to device_create_drvdataGreg Kroah-Hartman2008-07-22
| | | | | | | | device_create() is race-prone, so use the race-free device_create_drvdata() instead as device_create() is going away. Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* device create: s390: convert device_create to device_create_drvdataGreg Kroah-Hartman2008-07-22
| | | | | | | | | | device_create() is race-prone, so use the race-free device_create_drvdata() instead as device_create() is going away. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* device create: net: convert device_create to device_create_drvdataGreg Kroah-Hartman2008-07-22
| | | | | | | | | device_create() is race-prone, so use the race-free device_create_drvdata() instead as device_create() is going away. Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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