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From: Mauro Carvalho Chehab <mchehab@redhat.com>
kernel-sync:
Author: Kay Sievers <kay.sievers@vrfy.org>
Date: Thu Apr 30 15:23:42 2009 +0200
Driver Core: dvb: add nodename for dvb drivers
This adds support to the dvb core to report the proper device name to
userspace for their devices.
Priority: normal
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Priority: normal
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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From: Jan Engelhardt <jengelh@medozas.de>
dvb: constify VFTs
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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From: Mauro Carvalho Chehab <mchehab@redhat.com>
Author: Laurent Pinchart <laurent.pinchart@skynet.be>
Check fops_get() return value
Several subsystem open handlers dereference the fops_get() return value
without checking it for nullness. This opens a race condition between the
open handler and module unloading.
A module can be marked as being unloaded (MODULE_STATE_GOING) before its
exit function is called and gets the chance to unregister the driver.
During that window open handlers can still be called, and fops_get() will
fail in try_module_get() and return a NULL pointer.
This change checks the fops_get() return value and returns -ENODEV if NULL.
kernel-sync:
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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From: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Priority: normal
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Stephen Rothwell <sfr@canb.auug.org.au>
Today's linux-next build (x86_64 allmodconfig) failed like this:
drivers/media/dvb/dvb-core/dvbdev.c: In function 'dvb_register_device':
drivers/media/dvb/dvb-core/dvbdev.c:254: error: implicit declaration of function 'nums2minor'
Caused by commit f3d9182030d9655d9ffff33dfceb45b4a127b6ec ("V4L/DVB
(9361): Dynamic DVB minor allocation") which clearly has not even been
built with CONFIG_DVB_DYNAMIC_MINORS=y.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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From: Kay Sievers <kay.sievers@vrfy.org>
This allows udev to create proper device nodes without any
hacky shell scripts/programs to call, which guess these numbers
from the kernel device names.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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From: Andreas Oberritter <obi@linuxtv.org>
This is a multi-part message in MIME format.
Implement dynamic minor allocation for DVB, to allow more than four
devices of the same type per adapter, based on drivers/usb/core/file.c.
Add a new config option, DVB_DYNAMIC_MINORS, to make use of this
feature, which defaults to no for backwards compatibility.
Signed-off-by: Andreas Oberritter <obi@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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From: Mauro Carvalho Chehab <mchehab@redhat.com>
Author: Greg Kroah-Hartman <gregkh@suse.de>
device create: misc: convert device_create_drvdata to device_create
Now that device_create() has been audited, rename things back to the
original call to be sane.
kernel-sync:
Priority: normal
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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From: Darron Broad <darron@kewl.org>
This add frontend R/W mutual exclusion.
Prior to this point in time it was possible to open both
frontends simultaneously which an MFE card cannot support.
In order to stop this, a delayed open is performed which
has the following function:
Return EBUSY after a configurable amount of time
if a frontend is unavailable due to the other being
in use.
Only allow opening of a frontend if the kernel thread
of the other has stopped.
This solution was chosen to allow switching between
frontends to work as seamlessly as possible. When both
frontends are actually opened simultaneously then one
will only open, but if quick switching is performed
between one of many then the new open will succeed in
a clean fashion rather than interrupting a kernel
thread.
Priority: normal
Signed-off-by: Darron Broad <darron@kewl.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Author: Greg Kroah-Hartman <gregkh@suse.de>
Date: Wed May 21 12:52:33 2008 -0700
device create: dvb: convert device_create to device_create_drvdata
device_create() is race-prone, so use the race-free
device_create_drvdata() instead as device_create() is going away.
kernel-sync:
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Author: Jonathan Corbet <corbet@lwn.net>
Date: Thu May 15 16:26:57 2008 -0600
dvb: cdev lock_kernel() pushdown
kernel-sync:
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Hans Verkuil <hverkuil@xs4all.nl>
struct file_operations was made const in 2.6.17. Cast const away when compiling
under 2.6.16.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Phase 4 removes the compatibility support for kernels < 2.6.16.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Phase 3 of the compat cleanup.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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From: Janne Grunau <janne-dvb@grunau.be>
The adapter_nr module options can be used to allocate static adapter
numbers on a driver level. It avoids problems with changing DVB apapter
numbers after warm/cold boot or device unplugging and repluging.
Each driver holds DVB_MAX_ADAPTER long array of the preferred order of
adapter numbers.
options dvb-usb-dib0700 adapter_nr=7,6,5,4,3,2,1,0 would result in a
reversed allocation of adapter numbers.
With adapter_nr=2,5 it tries first to get adapter number 2 and 5. If
both are already in use it will allocate the lowest free adapter number.
Signed-off-by: Janne Grunau <janne-dvb@grunau.be>
Acked-by: Hermann Pitton <hermann.pitton@arcor.de>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Harvey Harrison <harvey.harrison@gmail.com>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Original description:
cdev: remove unneeded setting of cdev names
struct cdev does not need the kobject name to be set, as it is never
used. This patch fixes up the few places it is set.
kernel-sync:
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Since at least kernel 2.6.12-rc2, module.h includes moduleparm.h. This
patch removes all occurences of moduleparm.h from drivers/media files.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Trent Piepho <xyzzy@speakeasy.org>
The current compat code for device_create/destroy doesn't work properly for
kernels 2.6.14 or below, and 2.6.18 to 2.6.23.
For kernels 2.6.14 and below, the device_create/destroy compat code wasn't
enabled. Those kernels need it too.
For kernels 2.6.18 to 2.6.23, compat code _was_ getting including, which
caused errors since 2.6.18 and above already have device_create and
device_destroy.
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
class_device_create/class_device_destroy are being replaced by
device_create/device_destroy. This patch make it backward compatible.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Kay Sievers <kay.sievers@vrfy.org>
The currently used "struct class_device" will be removed from the
kernel. Here is a trivial patch that converts DVB to use struct device.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Simon Arlott <simon@fire.lp0.eu>
All the printks had missing level prefixes so I've fixed these too.
Also fixed some grammer errors.
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
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From: Simon Arlott <simon@fire.lp0.eu>
dvb-core is not started early enough when device drivers that use dvb are
compiled in so dvb_register_device fails (silently) since dvb_class is
NULL, this runs dvb_init using subsys_initcall instead of module_init.
dvb_register_device will now check the return value of class_device_create.
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
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From: Markus Rechberger <markus.rechberger@amd.com>
fixed frontend hotplug issue
Signed-off-by: Michal CIJOML Semler <cijoml@volny.cz>
Signed-off-by: Markus Rechberger <markus.rechberger@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Simon Arlott <simon@fire.lp0.eu>
Fix several instances of dvb-core functions using mutex_lock_interruptible
and returning -ERESTARTSYS where the calling function will either never
retry or never check the return value.
These cause a race condition with dvb_dmxdev_filter_free and
dvb_dvr_release, both of which are filesystem release functions whose
return value is ignored and will never be retried. When this happens it
becomes impossible to open dvr0 again (-EBUSY) since it has not been
released properly.
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-By: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Mauro Carvalho Chehab <mchehab@infradead.org>
Backport a changeset from Schmielau <tim@physik3.uni-rostock.de> that
removes uneeded includes for linux/sched.h
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Marcel Siegert <mws@linuxtv.org>
Arjan van de Ven <arjan@infradead.org> reported an illegal re-usage of the fileoperations struct
if more than one dvb device(e.g. frontend) is present. this patch fixes this issue.
it allocates a new fileoperations struct each time a device is registered and copies the default
template fileops.
Signed-off-by: Marcel Siegert <mws@linuxtv.org>
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From: Greg Kroah-Hartman <gregkh@suse.de>
Removes the devfs_mk_dir() function and all callers of it.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Greg Kroah-Hartman <gregkh@suse.de>
Removes the devfs_remove() function and all callers of it.
kernel-sync: backport from kernel to v4l/dvb tree
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Greg Kroah-Hartman <gregkh@suse.de>
Removes the devfs_mk_cdev() function and all callers of it.
kernel-sync: backport from kernel to v4l/dvb tree
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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From: Andrew de Quincey <adq_dvb@lidskialf.net>
Currently in /sys/class/dvb/dvbX.demuxY/ we have:
dev
uevent
With the patch, we have (for a PCI DVB device):
dev
device -> ../../../devices/pci0000:00/0000:00:1e.0/0000:03:0d.0
uevent
So userspace tools can (finally) work out which physical device a DVB adapter
refers to. Previously you had to kinda look through dmesg and hope that it
hadn't been dumped out of the buffer. This makes debugging a lot easier if
the system has been up for a long time!
This is done by adding an extra 'struct device *' parameter to
dvb_register_adapter(). It will work with any kind of standard
linux 'device'. Additionally, if someone has an embedded system which does
things differently, they can simply supply 'NULL' and the behaviour will be
as before - the link will simply not appear.
Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Ack'd-by: Manu Abraham <manu@linuxtv.org>
Acked-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Andrew de Quincey <adq_dvb@lidskialf.net>
This mutex is meant to stop two devices getting the same ID. dvbdev_get_free_id()
scans the list of already allocated devices to find a free id.
Unfortunately, since the mutex is unlocked before the card is added to the
above list, it is still possible for two of them to get the same id.
Solution: move the mutex after the list_add.
Its debatable whether this mutex lock is actually needed, but I'm unwilling
to just remove it in case something does depend on it.
Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
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From: Michael Krufky <mkrufky@linuxtv.org>
The following warning in all kernels < 2.6.17 is caused by
changeset a875912f0aada25949e3201bcd97e177040fa782 :
http://linuxtv.org/hg/v4l-dvb?cmd=changeset;node=a875912f0aad
videodev.c: In function 'video_open':
videodev.c:131: warning: assignment discards qualifiers from pointer target type
videodev.c:136: warning: assignment discards qualifiers from pointer target type
dvbdev.c: In function 'dvb_device_open':
dvbdev.c:105: warning: assignment discards qualifiers from pointer target type
This changeset restores backwards-compatability.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
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From: Arjan van de Ven <arjan@infradead.org>
Mark the f_ops members of inodes as const, as well as fix the
ripple-through this causes by places that copy this f_ops and then "do
stuff" with it.
kernel-sync
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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From: Ingo Molnar <mingo@elte.hu>
Semaphore to mutex conversion.
The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
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Signed-off-by: Michael Krufky <mkrufky@m1k.net>
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The previous patch adding the ability to nest struct class_device
changed the paramaters to the call class_device_create(). This patch
fixes up all in-kernel users of the function.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Michael Krufky <mkrufky@m1k.net>
This patch is already present in kernel 2.6.15-rc1
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embed struct dvb_adapter into their private data struct from now on.
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This patch contains the following possible cleanups:
- make needlessly global code static
- remove the following EXPORT_SYMBOL'ed but unused function:
- bt8xx/bt878.c: bt878_find_by_i2c_adap
- remove the following unused global functions:
- dvb-core/dvb_demux.c: dmx_get_demuxes
- dvb-core/dvb_demux.c: dvb_set_crc32
- remove the following unneeded EXPORT_SYMBOL's:
- dvb-core/dvb_demux.c: dvb_dmx_swfilter_packet
- dvb-core/dvb_demux.c: dvbdmx_connect_frontend
- dvb-core/dvb_demux.c: dvbdmx_disconnect_frontend
- dvb-core/dvbdev.c: dvb_class
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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kill dvb_ksyms.c and move the EXPORT_SYMBOLs to the files where the functions are
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