22 Dec, 2011
1 commit
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This moves the 'cpu sysdev_class' over to a regular 'cpu' subsystem
and converts the devices to regular devices. The sysdev drivers are
implemented as subsystem interfaces now.After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.Userspace relies on events and generic sysfs subsystem infrastructure
from sysdev devices, which are made available with this conversion.Cc: Haavard Skinnemoen
Cc: Hans-Christian Egtvedt
Cc: Tony Luck
Cc: Fenghua Yu
Cc: Arnd Bergmann
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: Paul Mundt
Cc: "David S. Miller"
Cc: Chris Metcalf
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Borislav Petkov
Cc: Tigran Aivazian
Cc: Len Brown
Cc: Zhang Rui
Cc: Dave Jones
Cc: Peter Zijlstra
Cc: Russell King
Cc: Andrew Morton
Cc: Arjan van de Ven
Cc: "Rafael J. Wysocki"
Cc: "Srivatsa S. Bhat"
Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman
16 Dec, 2011
1 commit
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This adds the needed include file for xen-selfballoon.c to fix the build
error reported by Stephen Rothwell.Reported-by: Stephen Rothwell
Cc: Kay Sievers
Signed-off-by: Greg Kroah-Hartman
15 Dec, 2011
7 commits
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After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.Cc: Jeremy Fitzhardinge
Cc: Konrad Rzeszutek Wilk
Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.Cc: John Stultz
Cc: Thomas Gleixner
Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.Cc: Matthew Garrett
Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.Cc: Doug Thompson
Cc: Paul Gortmaker
Cc: Lucas De Marchi
Cc: Borislav Petkov
Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.Cc: Thomas Gleixner
Cc: Paul Gortmaker
Cc: Arnd Bergmann
Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
All sysdev classes and sysdev devices will converted to regular devices
and buses to properly hook userspace into the event processing.There is no interesting difference between a 'sysdev' and 'device' which
would justify to roll an entire own subsystem with different userspace
export semantics. Userspace relies on events and generic sysfs subsystem
infrastructure from sysdev devices, which are currently not properly
available.Every converted sysdev class will create a regular device with the class
name in /sys/devices/system and all registered devices will becom a children
of theses devices.For compatibility reasons, the sysdev class-wide attributes are created
at this parent device. (Do not copy that logic for anything new, subsystem-
wide properties belong to the subsystem, not to some fake parent device
created in /sys/devices.)Every sysdev driver is implemented as a simple subsystem interface now,
and no longer called a driver.After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
It turns out that some memory allocators use kobjects, which use krefs,
and kref.h was wanting to figure out the address of kfree(), which ended
up in a loop.kfree was only being needed for a warning to tell the caller that they
were doing something stupid. Now we just move that warning into the
comments for the functions, which results in a bit more fun as everyone
enjoys digging for people to mock at times of boredom.So, remove the dependancy of slab.h on kref.h, and fix up the other
include file as well (we really only need bug.h and atomic.h, not
types.h).Reported-by: Stephen Rothwell
Cc: Peter Zijlstra
Cc: Alexey Dobriyan
Cc: Eric Dumazet
Cc: Ingo Molnar
Cc: Oliver Neukum
Signed-off-by: Greg Kroah-Hartman
14 Dec, 2011
3 commits
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Commit 1b0b3b9980e ("kref: fix CPU ordering with respect to krefs")
wrongly adds memory barriers to kref.It states:
some atomic operations are only atomic, not ordered. Thus a CPU is allowed
to reorder memory references to an object to before the reference is
obtained. This fixes it.While true, it fails to show why this is a problem. I say it is not a
problem because if there is a race with kref_put() such that we could
end up referencing a free'd object without this memory barrier, we
would still have that race with the memory barrier.The kref_put() in question could complete (and free the object) before
the atomic_inc() and we'd still be up shit creek.The kref_init() case is even worse, if your object is published at this
time you're so wrong the memory barrier won't make a difference what
so ever. If its not published, the act of publishing should include
the needed barriers/locks to make sure all writes prior to the act of
publishing are complete such that others will only observe a complete
object.Cc: Alexey Dobriyan
Cc: Eric Dumazet
Cc: Ingo Molnar
Cc: Oliver Neukum
Signed-off-by: Peter Zijlstra
Signed-off-by: Greg Kroah-Hartman -
Less lines of code is better.
Cc: Alexey Dobriyan
Cc: Eric Dumazet
Cc: Ingo Molnar
Signed-off-by: Peter Zijlstra
Signed-off-by: Greg Kroah-Hartman -
These are tiny functions, there's no point in having them out-of-line.
Cc: Alexey Dobriyan
Cc: Eric Dumazet
Cc: Ingo Molnar
Signed-off-by: Peter Zijlstra
Link: http://lkml.kernel.org/n/tip-8eccvi2ur2fzgi00xdjlbf5z@git.kernel.org
Signed-off-by: Greg Kroah-Hartman
13 Dec, 2011
5 commits
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In preparation for eventually supporting kexec in Linux VMs on Hyper-V,
get rid of an unnecessary check in hv_init().Signed-off-by: K. Y. Srinivasan
Signed-off-by: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman -
It turns out that the vmbus driver can be made unloadable. Make it
unloadable.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman -
There was a memory leak in a failure path in vmbus_process_offer().
Fix it.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman -
The Japanese/Korean/Chinese versions still need updating.
Also, the stable kernel 2.6.x.y descriptions are out of date
and should be updated as well.Signed-off-by: Joe Perches
Cc: stable
Signed-off-by: Greg Kroah-Hartman -
The old address hasn't worked since the great intrusion of August 2011.
Signed-off-by: Joe Perches
Cc: stable
Signed-off-by: Greg Kroah-Hartman
10 Dec, 2011
5 commits
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This enables a much more efficient way of device searching. It uses the
1-wire read-rom operation which allows the direct reading of the slave
address. BUT this works only with exactly one slave on the bus.Signed-off-by: Hubert Feurstein
Acked-by: Evgeniy Polyakovindex c374978..9761950 100644
Signed-off-by: Greg Kroah-Hartman -
Most network namespaces unlikely have listeners to uevents, and should
benefit from skipping all the string copies.Cc: Eric Biederman
Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman -
The hv vmbus driver was causing an OOPS since it was trying to register drivers
on top of the bus even if initialization of the bus has failed for some
reason (such as the odd chance someone would run a hv enabled kernel in a
non-hv environment).Signed-off-by: Sasha Levin
Signed-off-by: K. Y. Srinivasan
Cc: stable
Signed-off-by: Greg Kroah-Hartman -
Use min_t() macro instead of min() to fix a build warning:
CC drivers/firmware/google/gsmi.o
drivers/firmware/google/gsmi.c: In function ‘gsmi_get_variable’:
drivers/firmware/google/gsmi.c:348: warning: comparison of distinct
pointer types lacks a castSigned-off-by: Maxin B. John
Acked-By: Mike Waychison
Signed-off-by: Greg Kroah-Hartman -
platform_device_register_full doesn't modify *pdevinfo so it can be
marked as const without further adaptions.Signed-off-by: Uwe Kleine-König
Signed-off-by: Greg Kroah-Hartman
27 Nov, 2011
6 commits
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This patch converts the drivers in drivers/uio/* to use the
module_platform_driver() macro which makes the code smaller and a bit
simpler.Cc: Uwe Kleine-König
Cc: Magnus Damm
Cc: Amit Chatterjee
Cc: Pratheesh Gangadhar
Signed-off-by: Axel Lin
Signed-off-by: Greg Kroah-Hartman -
We should provide topology information to userland even if it's not
very interesting. The current code appears to work properly for !SMP
(tested on i386).Reference: http://bugs.debian.org/649216
Reported-by: Marcus Osdoba
Signed-off-by: Ben Hutchings
Signed-off-by: Greg Kroah-Hartman -
The cast here causes a Sparse warning:
fs/debugfs/file.c:561:42: warning: cast removes address space of expression
fs/debugfs/file.c:561:42: warning: incorrect type in argument 1 (different address spaces)
fs/debugfs/file.c:561:42: expected void const volatile [noderef] *addr
fs/debugfs/file.c:561:42: got void *It's redundant to cast it to a (void *) anyway when it is already a
(void __iomem *).Signed-off-by: Dan Carpenter
Signed-off-by: Greg Kroah-Hartman -
Most of the drivers/*/Kconfig files define a menu entry. Define
a menu item for hv too such that it becomes uniform with e.g.
virtio for at least "make xconfig" and "make menuconfig" users.Signed-off-by: Bart Van Assche
Cc: Greg Kroah-Hartman
Cc: James Bottomley
Cc: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
Modify the way we initialize the vmbus driver so that all the hyper-v drivers
can be linked with the kernel and still ensure that the vmbus driver
is fully initialized before the drivers that depend upon the vmbus
driver attempt to initialize.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman -
Move the "Device Drivers/Microsoft Hyper-V guest support"
menu entry up such that it appears immediately below virtio
(KVM and lguest guest driver support) instead of after a
hypervisor driver menu entry.Signed-off-by: Bart Van Assche
Cc: Greg Kroah-Hartman
Cc: James Bottomley
Cc: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
23 Nov, 2011
1 commit
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The regs32 machinery uses readl. I forgot the mandatory include
and the code was not compiling on all archs.Reported-by: Stephen Rothwell
Signed-off-by: Alessandro Rubini
Signed-off-by: Greg Kroah-Hartman
19 Nov, 2011
11 commits
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The previous patch left an unused variable, I apologize.
Signed-off-by: Alessandro Rubini
Signed-off-by: Greg Kroah-Hartman -
Signed-off-by: Alessandro Rubini
Signed-off-by: Greg Kroah-Hartman -
This a use example of the regs32 utilities in debugfs, although
this fuse use ":" as separator between name and value, and debugs
uses "=" (as it looked to me a more common practice).Signed-off-by: Alessandro Rubini
Acked-by: Felipe Balbi
Signed-off-by: Greg Kroah-Hartman -
Some debugfs file I deal with are mostly blocks of registers,
i.e. lines of the form " = 0x". Some files are only
registers, some include registers blocks among other material. This
patch introduces data structures and functions to deal with both
cases. I expect more users of this over time.Signed-off-by: Alessandro Rubini
Acked-by: Giancarlo Asnaghi
Cc: Felipe Balbi
Signed-off-by: Greg Kroah-Hartman -
This converts the remaining USB drivers in the kernel to use the
module_usb_driver() macro which makes the code smaller and a bit
simpler.Added bonus is that it removes some unneeded kernel log messages about
drivers loading and/or unloading.Cc: Guenter Roeck
Cc: Jean Delvare
Cc: Ben Dooks
Cc: Till Harbaum
Cc: Karsten Keil
Cc: Chris Ball
Cc: David Woodhouse
Cc: Lauro Ramos Venancio
Cc: Aloisio Almeida Jr
Cc: Samuel Ortiz
Cc: Steve Glendinning
Cc: Florian Tobias Schandinat
Cc: Evgeniy Polyakov
Cc: Wim Van Sebroeck
Cc: "David S. Miller"
Cc: Jesper Juhl
Cc: Artem Bityutskiy
Cc: Jamie Iles
Cc: Andrew Morton
Signed-off-by: Greg Kroah-Hartman -
This converts the drivers in sound/* to use the
module_usb_driver() macro which makes the code smaller and a bit
simpler.Added bonus is that it removes some unneeded kernel log messages about
drivers loading and/or unloading.Cc: Jaroslav Kysela
Cc: Takashi Iwai
Cc: Daniel Mack
Cc: Clemens Ladisch
Cc: Torsten Schenk
Cc: Paul Gortmaker
Cc: Karsten Wiese
Signed-off-by: Greg Kroah-Hartman -
This converts the drivers in drivers/hid/* to use the
module_usb_driver() macro which makes the code smaller and a bit
simpler.Added bonus is that it removes some unneeded kernel log messages about
drivers loading and/or unloading.Cc: Jiri Kosina
Signed-off-by: Greg Kroah-Hartman -
This converts the drivers in drivers/input/* to use the
module_usb_driver() macro which makes the code smaller and a bit
simpler.Added bonus is that it removes some unneeded kernel log messages about
drivers loading and/or unloading.Cc: Dmitry Torokhov
Cc: Ville Syrjala
Cc: Henk Vergonet
Cc: Alessandro Rubini
Cc: Henrik Rydberg
Cc: "Magnus Hörlin"
Cc: Chris Moeller
Cc: Christoph Fritz
Cc: Lucas De Marchi
Cc: Jesper Juhl
Cc: Edwin van Vliet
Cc: Ping Cheng
Cc: Eduard Hasenleithner
Cc: Alexander Strakh
Cc: Glenn Sommer
Signed-off-by: Greg Kroah-Hartman -
This converts the drivers in drivers/bluetooth/* to use the
module_usb_driver() macro which makes the code smaller and a bit
simpler.Added bonus is that it removes some unneeded kernel log messages about
drivers loading and/or unloading.Cc: Marcel Holtmann
Cc: "Gustavo F. Padovan"
Signed-off-by: Greg Kroah-Hartman -
This converts the drivers in drivers/media/* to use the
module_usb_driver() macro which makes the code smaller and a bit
simpler.Added bonus is that it removes some unneeded kernel log messages about
drivers loading and/or unloading.Cc: Mauro Carvalho Chehab
Cc: Luca Risolia
Cc: Jean-Francois Moine
Cc: Frank Zago
Cc: Olivier Lorin
Cc: Erik Andren
Cc: Hans de Goede
Cc: Brian Johnson
Cc: Leandro Costantino
Cc: Antoine Jacquet
Cc: Jarod Wilson
Cc: Florian Mickler
Cc: Antti Palosaari
Cc: Michael Krufky
Cc: "David Härdeman"
Cc: Florent Audebert
Cc: Sam Doshi
Cc: Manu Abraham
Cc: Olivier Grenie
Cc: Patrick Boettcher
Cc: "Igor M. Liplianin"
Cc: Derek Kelly
Cc: Malcolm Priestley
Cc: Steven Toth
Cc: "André Weidemann"
Cc: Martin Wilks
Cc: Tejun Heo
Cc: Jose Alberto Reguero
Cc: David Henningsson
Cc: Paul Gortmaker
Cc: Joe Perches
Cc: Jesper Juhl
Cc: Lucas De Marchi
Cc: Hans Verkuil
Cc: Alexey Khoroshilov
Cc: Anssi Hannula
Cc: Rafi Rubin
Cc: Dan Carpenter
Cc: Paul Bender
Cc: Devin Heitmueller
Cc: "Márcio A Alves"
Cc: Julia Lawall
Cc: Laurent Pinchart
Cc: Chris Rankin
Cc: Lee Jones
Cc: Andy Walls
Cc: Andrew Morton
Cc: Mike Frysinger
Cc: Dean Anderson
Cc: Pete Eberlein
Cc: Arvydas Sidorenko
Cc: Andrea Anacleto
Signed-off-by: Greg Kroah-Hartman -
This converts the drivers in drivers/net/* to use the
module_usb_driver() macro which makes the code smaller and a bit
simpler.Added bonus is that it removes some unneeded kernel log messages about
drivers loading and/or unloading.Cc: Wolfgang Grandegger
Cc: Samuel Ortiz
Cc: Oliver Neukum
Cc: Peter Korsgaard
Cc: Petko Manolov
Cc: Steve Glendinning
Cc: Christian Lamparter
Cc: "John W. Linville"
Cc: Dan Williams
Cc: Jussi Kivilinna
Cc: Ivo van Doorn
Cc: Gertjan van Wingerde
Cc: Helmut Schaa
Cc: Herton Ronaldo Krzesinski
Cc: Hin-Tak Leung
Cc: Larry Finger
Cc: Chaoming Li
Cc: Lucas De Marchi
Cc: "David S. Miller"
Cc: Roel Kluin
Cc: Paul Gortmaker
Cc: Jiri Pirko
Cc: Pavel Roskin
Cc: Yoann DI-RUZZA
Cc: George
Signed-off-by: Greg Kroah-Hartman