Commit graph

2972 commits

Author SHA1 Message Date
Malcolm Priestley
352a587ccd [media] DiSEqC bug fixed for stv0288 based interfaces
Fixed problem with DiSEqC communication. The message was wrongly modulated,
so the DiSEqC switch was not work.

This patch fixes DiSEqC messages, simple tone burst and tone on/off.
I verified it with osciloscope against the DiSEqC documentation.

Interface: PCI DVB-S TV tuner TeVii S420
Kernel: 2.6.32-24-generic (UBUNTU 10.4)

Signed-off-by: Josef Pavlik <josef@pavlik.it>
Tested-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 07:55:58 -02:00
Andy Shevchenko
0e44dec17f [media] dvb: mantis: use '%pM' format to print MAC address
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 07:55:57 -02:00
Julia Lawall
92d0d66c15 [media] drivers/media/dvb/ttpci/av7110_av.c: Add missing error handling code
Extend the error handling code with operations found in other nearby error
handling code.

A simplified version of the sematic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
@r@
statement S1,S2,S3;
constant C1,C2,C3;
@@

*if (...)
 {... S1 return -C1;}
...
*if (...)
 {... when != S1
    return -C2;}
...
*if (...)
 {... S1 return -C3;}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 07:54:29 -02:00
Derek Kelly
bdd1751b49 [media] gp8psk: Add support for the Genpix Skywalker-2
gp8psk: Add support for the Genpix Skywalker-2 per user requests.

Patched against git.

Signed-off-by: Derek Kelly <user.vdr@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 07:54:27 -02:00
Jean Delvare
a90f933507 [media] i2c: Stop using I2C_CLASS_TV_DIGITAL
Detection class I2C_CLASS_TV_DIGITAL is set by many adapters but no
I2C device driver is setting it anymore, which means it can be
dropped. I2C devices on digital TV adapters are instantiated
explicitly these days, which is much better.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 07:54:26 -02:00
Jean Delvare
0a5f1f211f [media] i2c: Stop using I2C_CLASS_TV_ANALOG
Detection class I2C_CLASS_TV_ANALOG is set by a few adapters but no
I2C device driver is setting it anymore, which means it can be
dropped. I2C devices on analog TV adapters are instantiated
explicitly these days, which is much better.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 07:54:25 -02:00
Tommy Jonsson
d2fd44a330 [media] firedtv: support for PSK8 for S2 devices. To watch HD
Add support for tuning with PSK8 modulation, pilot and rolloff
with the S2 versions of firedtv.

Signed-off-by: Tommy Jonsson <quazzie2@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (trivial simplification)
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 07:54:09 -02:00
Antti Palosaari
1cd72781db [media] af9015: move remote controllers to new RC core
Use new RC core instead of old legacy RC implementation.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:18:14 -02:00
Antti Palosaari
675375d7ae [media] af9015: remove needless variable set
Variable is don't care in that case. No need to set value.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:18:00 -02:00
Antti Palosaari
9a3ecc7382 [media] af9015: make checkpatch.pl happy
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:17:59 -02:00
Yann E. MORIN
8ccdf1ae9d [media] v4l/dvb: add support for AVerMedia AVerTV Red HD+ (A850T)
The AVerTV Red HD+ (A850T) is basically the same as the existing
AVerTV Volar Black HD (A850), but is specific to the french market.
The A850T identifies itself as a A850, but has its own PID. It even
suffers from the same EEPROM deficiencies.

This is based off a collection of information gathered from the
french support forums for Ubuntu, which I tried to properly format
into this patch:
  http://forum.ubuntu-fr.org/viewtopic.php?pid=3322825

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:17:58 -02:00
Antti Palosaari
9e35cd222b [media] af9013: cache some reg values to reduce reg reads
Demod + tuner specific RF AGC and IF AGC limit values are read from demod
memory in every signal strength query. Cache those to reduce I2C traffic.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:17:55 -02:00
Antti Palosaari
edb709b61a [media] af9013: optimize code size
Precalculate coefficients register values. This reduces text size around 300 bytes.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:17:54 -02:00
Mauro Carvalho Chehab
955e6ed843 [media] CodingStyle cleanup at s5h1432 and cx231xx
The patches received from the vendor contained a lot of CodingStyle
issues. Cleans the style issues reported by checkpatch.pl on
those drivers.

It is better to do such style fixes when merging a big set of
changes than latter. Of course, the better is to receive patches
already cleaned ;)

Acked-by: Sri Deevi <Srinivasa.Deevi@conexant.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:17:45 -02:00
Devin Heitmueller
bda7f4ee67 [media] s5h1432: fix codingstyle issues
Run Lindent and fix a few spacing issues.

This patch makes no functional change to the driver.

Signed-off-by: Devin Heitmueller <dheitmueller@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:17:15 -02:00
Palash Bandyopadhyay
47b75ec146 [media] s5h1432: Add new s5h1432 driver
Introduce a new driver for the s5h1432

Signed-off-by: Palash Bandyopadhyay <palash.bandyopadhyay@conexant.com>
Signed-off-by: Devin Heitmueller <dheitmueller@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:17:09 -02:00
Arnd Bergmann
104a698657 V4L/DVB: dvb/bt8xx: kill the big kernel lock
The bt8xx driver only uses the big kernel lock in its dst_ca_ioctl
function and never to serialize against other code, so we can
trivially replace it with a private mutex.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:06:12 -02:00
Arnd Bergmann
e4e62b35b8 V4L/DVB: dvb-core: kill the big kernel lock
The dvb core only uses the big kernel lock in the open
and ioctl functions, which means it can be replaced with
a dvb specific mutex. Fortunately, all the ioctl functions
go through dvb_usercopy, so we can move the serialization
in there.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:06:11 -02:00
Jean Delvare
f89ca6fae2 V4L/DVB: cx22702: Simplify cx22702_set_tps()
Code in function cx22702_set_tps() can be slightly simplified.
Apparently gcc was smart enough to optimize it anyway, but it can't
hurt to make the code more readable.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:06:10 -02:00
Jean Delvare
bdc6fad341 V4L/DVB: cx22702: Some things never change
The init sequence never changes so it can be marked const. Likewise,
cx22702_ops is a template and can thus be made read-only.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:06:10 -02:00
Jean Delvare
27f84acf0b V4L/DVB: cx22702: Avoid duplicating code in branches
Calling the same functions in if/else or switch/case branches is
inefficient. Refactor the code for a smaller binary and increased
readability.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:06:10 -02:00
Jean Delvare
5b9a6f37ab V4L/DVB: cx22702: Drop useless initializations to 0
These variables are either unconditionally set right afterward, or
already set to 0 by kzalloc.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:06:09 -02:00
Jean Delvare
24764107ec V4L/DVB: cx22702: Clean up register access functions
* Avoid temporary variables.
* Optimize success paths.
* Make error messages consistently verbose.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:06:09 -02:00
Thomas Gleixner
a0a4714c40 V4L/DVB: dvb: Convert "mutex" to semaphore
Get rid of init_MUTEX[_LOCKED]() and use sema_init() instead.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:06:08 -02:00
Hans Verkuil
978cff6bf3 V4L/DVB: au8522_decoder: remove obsolete v4l2-i2c-drv.h header
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:06:04 -02:00
Antti Palosaari
ed19a5db78 V4L/DVB: af9015: use value from config instead hardcoded one
Replace 2nd demod default address 0x3a with value got from eeprom config.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:05:52 -02:00
Antti Palosaari
9b22edd4b0 V4L/DVB: af9013: optimize code size
Optimize af9013_set_coeff(). Move configuration values to own table.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:05:52 -02:00
Antti Palosaari
d3bb73de97 V4L/DVB: af9015: reimplement remote controller
Remove HID and polling via firmware API. Implement direct access to remote codes via memory read and write.

HID and polling via firmware api never worked 100% well and there was also some limitations which tied used remote and device together.

After that it is possible to use upcoming kernel remote controller core.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:05:52 -02:00
Antti Palosaari
2ec01b41e3 V4L/DVB: af9015: map TerraTec Cinergy T Stick Dual RC remote to device ID
Detect TerraTec Cinergy T Stick Dual RC	remote config using device
USB ID instead of device EEPROM hash. It was found that there is
devices	with slightly different EEPROM content...

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:05:52 -02:00
Antti Palosaari
86dcab6445 V4L/DVB: af9015: add remote support for TerraTec Cinergy T Stick Dual RC
Thanks to the TerraTec!

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:05:52 -02:00
Antti Palosaari
ab07fdd691 V4L/DVB: af9015: add support for TerraTec Cinergy T Stick Dual RC
Add USB ID [0ccd:0099] for TerraTec Cinergy T Stick Dual RC.
Device is based for AF9015 + AF9013 + 2 x MxL5007T chips.

Thanks to the TerraTec!

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:05:51 -02:00
Antti Palosaari
a4f31d0da5 V4L/DVB: af9013: add support for MaxLinear MxL5007T tuner
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:05:51 -02:00
Antti Palosaari
76391a7154 V4L/DVB: af9015: fix bug introduced by commit 490ade7e3f4474f626a8f5d778ead4e599b94fbc
Commit 490ade7e3f4474f626a8f5d778ead4e599b94fbc	merge conflict fix
leads situation	where last nine device definitions were overridden mistakenly.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:05:51 -02:00
Antti Palosaari
a44b91d9fe V4L/DVB: af9015: simple comment update
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:05:50 -02:00
Malcolm Priestley
be96624a38 V4L/DVB: STV0288 Incorrect bit sample for Vitterbi status
bit 3(LK) indicates that the Vstatus is locked.
Currently using bit 7(CF) which is usually present, results in early
aborted search in FEC_AUTO and missing channels.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:04:58 -02:00
Malcolm Priestley
d2f918bba7 V4L/DVB: Support or LME2510(C) DM04/QQBOX USB DVB-S BOXES
DM04/QQBOX DVB-S USB BOX with LME2510C+SHARP:BS2F7HZ7395 or LME2510+LGTDQT-P001F tuner.

[mchehab@redhat.com: Fix merge conflicts/compilation and CodingStyle issues]
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:04:54 -02:00
Mauro Carvalho Chehab
9d10f3d7e7 V4L/DVB: ix2505v: make scripts/checkpatch.pl happy
WARNING: please, no space before tabs
+ *  ^IPOR = Power on Reset (VCC H=<2.2v L=>2.2v)$

WARNING: unnecessary whitespace before a quoted newline
+	deb_info("Frq=%d x=%d N=%d A=%d \n", frequency, x, N, A);

WARNING: please, no space before tabs
+^Ielse ^I^I/*frequency up to 2150000*/$

WARNING: unnecessary whitespace before a quoted newline
+	deb_info("Data 0=[%x%x%x%x] \n", data[0], data[1], data[2], data[3]);

WARNING: unnecessary whitespace before a quoted newline
+	deb_info("Data 2=[%x%x] \n", data[2], data[3]);

Cc: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:04:53 -02:00
Malcolm Priestley
1ae2c5893d V4L/DVB: Support for Sharp IX2505V (marked B0017) DVB-S silicon tuner
Tuner used in Sharp BS2F7VZ7395 dvbs module.
When ix2505v tuner is attached to stv0288 form this module.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:04:53 -02:00
Julia Lawall
f78729b40a V4L/DVB: drivers/media/dvb/siano: Remove double test
The same expression is tested twice and the result is the same each time.

The sematic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@expression@
expression E;
@@

(
* E
  || ... || E
|
* E
  && ... && E
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:04:53 -02:00
Stefan Lippers-Hollmann
d7ef485daa V4L/DVB: af9015: add USB ID for Terratec Cinergy T Stick RC MKII
Adding the USB ID for my TerraTec Electronic GmbH Cinergy T RC MKII
[0ccd:0097] and hooking it up into af9015, on top of your new NXP TDA18218
patches, makes it work for me.

Just the shipped IR remote control doesn't seem to create keycode events
yet (tested with different remote=%d parameters), are there any hints to
add support for that?

[    2.250022] usb 1-10: new high speed USB device using ehci_hcd and address 5
[    2.369287] usb 1-10: New USB device found, idVendor=0ccd, idProduct=0097
[    2.369290] usb 1-10: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[    2.369293] usb 1-10: Product: USB2.0 DVB-T TV Stick
[    2.369294] usb 1-10: Manufacturer: NEWMI
[    2.369296] usb 1-10: SerialNumber: 010101010600001
[    2.534023] usbcore: registered new interface driver hiddev
[    2.537235] input: NEWMI USB2.0 DVB-T TV Stick as /devices/pci0000:00/0000:00:02.1/usb1/1-10/1-10:1.1/input/input0
[    2.537323] generic-usb 0003:0CCD:0097.0001: input,hidraw0: USB HID v1.01 Keyboard [NEWMI USB2.0 DVB-T TV Stick] on usb-0000:00:02.1-10/input1
[    2.537349] usbcore: registered new interface driver usbhid
[    2.537351] usbhid: USB HID core driver
[    3.263177] generic-usb 0003:04D9:1603.0002: input,hidraw1: USB HID v1.10 Keyboard [  USB Keyboard] on usb-0000:00:02.0-8.1/input0
[    3.286946] generic-usb 0003:04D9:1603.0003: input,hidraw2: USB HID v1.10 Device [  USB Keyboard] on usb-0000:00:02.0-8.1/input1
[    3.467136] generic-usb 0003:046D:C050.0004: input,hidraw3: USB HID v1.10 Mouse [Logitech USB-PS/2 Optical Mouse] on usb-0000:00:02.0-8.2/input0
[    3.660890] generic-usb 0003:10D5:000D.0005: input,hidraw4: USB HID v1.10 Keyboard [No brand SP02-A1] on usb-0000:00:02.0-8.3/input0
[    5.567632] dvb-usb: found a 'TerraTec Cinergy T Stick RC' in cold state, will try to load a firmware
[    5.693497] dvb-usb: downloading firmware from file 'dvb-usb-af9015.fw'
[    5.773109] dvb-usb: found a 'TerraTec Cinergy T Stick RC' in warm state.
[    5.773168] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
[    5.774290] DVB: registering new adapter (TerraTec Cinergy T Stick RC)
[    6.007696] af9013: firmware version:5.1.0
[    6.010843] DVB: registering adapter 0 frontend 0 (Afatech AF9013 DVB-T)...
[    6.032697] tda18218: NXP TDA18218HN successfully identified.
[    6.034442] dvb-usb: TerraTec Cinergy T Stick RC successfully initialized and connected.
[    6.040612] usbcore: registered new interface driver dvb_usb_af9015

[mchehab@redhat.com: Fix merge conflict with another board addition]
Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Acked-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:04:52 -02:00
lawrence rust
2e4e98e788 V4L/DVB: drivers/media: Make static data tables and strings const
Making static data const avoids allocation of additional r/w memory and
reduces initialisation time.  It also provides some additional opportunities
for compiler optimisations.

Signed-off-by: Lawrence Rust <lvr@softsystem.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:04:52 -02:00
Julia Lawall
f277097929 V4L/DVB: drivers/media: Use available error codes
In each case, error codes are stored in rc, but the return value is always
0.  Return rc instead.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
local idexpression x;
constant C;
@@

if (...) { ...
  x = -C
  ... when != x
(
  return <+...x...+>;
|
  return NULL;
|
  return;
|
* return ...;
)
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:04:48 -02:00
Antti Palosaari
f1edeea6c2 V4L/DVB: af9015: add missing TDA18218 Kconfig option
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:04:42 -02:00
Antti Palosaari
ee3d440c0c V4L/DVB: af9015: add support for tda18218 silicon tuner
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:04:42 -02:00
Antti Palosaari
2158e5090b V4L/DVB: af9013: add support for tda18218 silicon tuner
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 01:04:42 -02:00
Arnd Bergmann
72024f1ec5 dvb-core: kill the big kernel lock
The dvb core only uses the big kernel lock in the open
and ioctl functions, which means it can be replaced with
a dvb specific mutex. Fortunately, all the ioctl functions
go through dvb_usercopy, so we can move the serialization
in there.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: linux-media@vger.kernel.org
2010-10-19 11:29:56 +02:00
Arnd Bergmann
adfedd216d dvb/bt8xx: kill the big kernel lock
The bt8xx driver only uses the big kernel lock in its dst_ca_ioctl
function and never to serialize against other code, so we can
trivially replace it with a private mutex.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-media@vger.kernel.org
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
2010-10-19 11:29:55 +02:00
Justin P. Mattock
631dd1a885 Update broken web addresses in the kernel.
The patch below updates broken web addresses in the kernel

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Finn Thain <fthain@telegraphics.com.au>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Dimitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Acked-by: Ben Pfaff <blp@cs.stanford.edu>
Acked-by: Hans J. Koch <hjk@linutronix.de>
Reviewed-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-10-18 11:03:14 +02:00
Arnd Bergmann
6038f373a3 llseek: automatically add .llseek fop
All file_operations should get a .llseek operation so we can make
nonseekable_open the default for future file operations without a
.llseek pointer.

The three cases that we can automatically detect are no_llseek, seq_lseek
and default_llseek. For cases where we can we can automatically prove that
the file offset is always ignored, we use noop_llseek, which maintains
the current behavior of not returning an error from a seek.

New drivers should normally not use noop_llseek but instead use no_llseek
and call nonseekable_open at open time.  Existing drivers can be converted
to do the same when the maintainer knows for certain that no user code
relies on calling seek on the device file.

The generated code is often incorrectly indented and right now contains
comments that clarify for each added line why a specific variant was
chosen. In the version that gets submitted upstream, the comments will
be gone and I will manually fix the indentation, because there does not
seem to be a way to do that using coccinelle.

Some amount of new code is currently sitting in linux-next that should get
the same modifications, which I will do at the end of the merge window.

Many thanks to Julia Lawall for helping me learn to write a semantic
patch that does all this.

===== begin semantic patch =====
// This adds an llseek= method to all file operations,
// as a preparation for making no_llseek the default.
//
// The rules are
// - use no_llseek explicitly if we do nonseekable_open
// - use seq_lseek for sequential files
// - use default_llseek if we know we access f_pos
// - use noop_llseek if we know we don't access f_pos,
//   but we still want to allow users to call lseek
//
@ open1 exists @
identifier nested_open;
@@
nested_open(...)
{
<+...
nonseekable_open(...)
...+>
}

@ open exists@
identifier open_f;
identifier i, f;
identifier open1.nested_open;
@@
int open_f(struct inode *i, struct file *f)
{
<+...
(
nonseekable_open(...)
|
nested_open(...)
)
...+>
}

@ read disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
<+...
(
   *off = E
|
   *off += E
|
   func(..., off, ...)
|
   E = *off
)
...+>
}

@ read_no_fpos disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
... when != off
}

@ write @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
<+...
(
  *off = E
|
  *off += E
|
  func(..., off, ...)
|
  E = *off
)
...+>
}

@ write_no_fpos @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
... when != off
}

@ fops0 @
identifier fops;
@@
struct file_operations fops = {
 ...
};

@ has_llseek depends on fops0 @
identifier fops0.fops;
identifier llseek_f;
@@
struct file_operations fops = {
...
 .llseek = llseek_f,
...
};

@ has_read depends on fops0 @
identifier fops0.fops;
identifier read_f;
@@
struct file_operations fops = {
...
 .read = read_f,
...
};

@ has_write depends on fops0 @
identifier fops0.fops;
identifier write_f;
@@
struct file_operations fops = {
...
 .write = write_f,
...
};

@ has_open depends on fops0 @
identifier fops0.fops;
identifier open_f;
@@
struct file_operations fops = {
...
 .open = open_f,
...
};

// use no_llseek if we call nonseekable_open
////////////////////////////////////////////
@ nonseekable1 depends on !has_llseek && has_open @
identifier fops0.fops;
identifier nso ~= "nonseekable_open";
@@
struct file_operations fops = {
...  .open = nso, ...
+.llseek = no_llseek, /* nonseekable */
};

@ nonseekable2 depends on !has_llseek @
identifier fops0.fops;
identifier open.open_f;
@@
struct file_operations fops = {
...  .open = open_f, ...
+.llseek = no_llseek, /* open uses nonseekable */
};

// use seq_lseek for sequential files
/////////////////////////////////////
@ seq depends on !has_llseek @
identifier fops0.fops;
identifier sr ~= "seq_read";
@@
struct file_operations fops = {
...  .read = sr, ...
+.llseek = seq_lseek, /* we have seq_read */
};

// use default_llseek if there is a readdir
///////////////////////////////////////////
@ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier readdir_e;
@@
// any other fop is used that changes pos
struct file_operations fops = {
... .readdir = readdir_e, ...
+.llseek = default_llseek, /* readdir is present */
};

// use default_llseek if at least one of read/write touches f_pos
/////////////////////////////////////////////////////////////////
@ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read.read_f;
@@
// read fops use offset
struct file_operations fops = {
... .read = read_f, ...
+.llseek = default_llseek, /* read accesses f_pos */
};

@ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write.write_f;
@@
// write fops use offset
struct file_operations fops = {
... .write = write_f, ...
+	.llseek = default_llseek, /* write accesses f_pos */
};

// Use noop_llseek if neither read nor write accesses f_pos
///////////////////////////////////////////////////////////

@ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
identifier write_no_fpos.write_f;
@@
// write fops use offset
struct file_operations fops = {
...
 .write = write_f,
 .read = read_f,
...
+.llseek = noop_llseek, /* read and write both use no f_pos */
};

@ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write_no_fpos.write_f;
@@
struct file_operations fops = {
... .write = write_f, ...
+.llseek = noop_llseek, /* write uses no f_pos */
};

@ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
@@
struct file_operations fops = {
... .read = read_f, ...
+.llseek = noop_llseek, /* read uses no f_pos */
};

@ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
@@
struct file_operations fops = {
...
+.llseek = noop_llseek, /* no read or write fn */
};
===== End semantic patch =====

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Julia Lawall <julia@diku.dk>
Cc: Christoph Hellwig <hch@infradead.org>
2010-10-15 15:53:27 +02:00
Richard Zidlicky
3cdadc50bb V4L/DVB: dvb: fix smscore_getbuffer() logic
Drivers shouldn't sleep while holding a spinlock. A previous workaround
were to release the spinlock before callinc schedule().

This patch uses a different approach: it just waits for the
siano hardware to answer.

Signed-off-by: Richard Zidlicky <rz@linux-m68k.org>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-09-27 22:21:59 -03:00