Commit Graph

304 Commits

Author SHA1 Message Date
Mauro Carvalho Chehab
d73dcf0cdb media: dvb_frontend: cleanup ioctl handling logic
Currently, there are two handlers for ioctls:
 - dvb_frontend_ioctl_properties()
 - dvb_frontend_ioctl_legacy()

Despite their names, both handles non-legacy DVB ioctls.

Besides that, there's no reason why to not handle all ioctls
on a single handler function.

So, merge them into a single function (dvb_frontend_handle_ioctl)
and reorganize the ioctl's to indicate what's the current DVB
API and what's deprecated.

Despite the big diff, the handling logic for each ioctl is the
same as before.

Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-10-11 12:54:07 -04:00
Mauro Carvalho Chehab
2b5df42b8d media: dvb_frontend: cleanup dvb_frontend_ioctl_properties()
Use a switch() on this function, just like on other ioctl
handlers and handle parameters inside each part of the
switch.

That makes it easier to integrate with the already existing
ioctl handler function.

Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-10-11 12:53:09 -04:00
Mauro Carvalho Chehab
6680e73b52 media: dvb_frontend: get rid of set_property() callback
Now that all clients of set_property() were removed, get rid
of this callback.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-10-11 12:52:16 -04:00
Mauro Carvalho Chehab
8f8a19fcc1 media: dvb_frontend: get rid of get_property() callback
Only lg2160 implement gets_property, but there's no need for that,
as no other driver calls this callback, as get_frontend() does the
same, and set_frontend() also calls lg2160 get_frontend().

So, get rid of it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Reviewed-by: Michael Ira Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-10-11 12:51:36 -04:00
Mauro Carvalho Chehab
4cd7d6c957 media: get rid of removed DMX_GET_CAPS and DMX_SET_SOURCE leftovers
Those two ioctls were never used within the Kernel. Still, there
used to have compat32 code there (and an if #0 block at the core).

Get rid of them.

Fixes: 286fe1ca3f ("media: dmx.h: get rid of DMX_GET_CAPS")
Fixes: 13adefbe9e ("media: dmx.h: get rid of DMX_SET_SOURCE")
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05 08:25:07 -04:00
Mauro Carvalho Chehab
f35afa4f60 media: dvb/frontend.h: move out a private internal structure
struct dtv_cmds_h is just an ancillary struct used by the
dvb_frontend.c to internally store frontend commands.

It doesn't belong to the userspace header, nor it is used anywhere,
except inside the DVB core. So, remove it from the header.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05 05:53:00 -04:00
Mauro Carvalho Chehab
3256b36ea3 media: dmx.h: split typedefs from structs
Using typedefs inside the Kernel is against CodingStyle, and
there's no good usage here.

Just like we did at frontend.h, at commit 0df289a209
("[media] dvb: Get rid of typedev usage for enums"), let's keep
those typedefs only to provide userspace backward compatibility.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05 05:49:45 -04:00
Colin Ian King
450694c3b9 media: dvb_frontend: initialize variable s with FE_NONE instead of 0
GIT_AUTHOR_NAME=Colin King
GIT_AUTHOR_EMAIL=colin.king@canonical.com

In a previous commit, we added FE_NONE as an unknown fe_status.
Initialize variable s to FE_NONE instead of the more opaque value 0.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-27 17:58:44 -04:00
Colin Ian King
a9e4998073 media: dvb_frontend: ensure that inital front end status initialized
The fe_status variable s is not initialized meaning it can have any
random garbage status.  This could be problematic if fe->ops.tune is
false as s is not updated by the call to fe->ops.tune() and a
subsequent check on the change status will using a garbage value.
Fix this by adding FE_NONE to the enum fe_status and initializing
s to this.

Detected by CoverityScan, CID#112887 ("Uninitialized scalar variable")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-27 17:55:51 -04:00
Hans Verkuil
0e50e84a11 media: dvb-core/demux.h: fix kernel-doc warning
Fix this kernel-doc warning:

WARNING: kernel-doc 'media-git/scripts/kernel-doc -rst -enable-lineno media-git/drivers/media/dvb-core/demux.h' processing failed with: 'ascii' codec can't decode byte 0xe2 in position 6368: ordinal
not in range(128)

Caused by using fancy quotes instead of regular quotes.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-21 08:01:08 -04:00
Nuno Henriques
b5e0733ffc media: Added support for the TerraTec T1 DVB-T USB tuner [IT9135 chipset]
Signed-off-by: Nuno Henriques <nuno.amhenriques@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 16:46:49 -04:00
Mauro Carvalho Chehab
faafd9e70e media: dvb_ca_en50221.h: fix checkpatch strict warnings
As we're already touching on dvb_ca_en50221 to cleanup
checkpatch issues, do that also for its header file, with:

	$ ./scripts/checkpatch.pl --strict --fix-inplace -f drivers/media/dvb-core/dvb_ca_en50221.h

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:47:07 -04:00
Jasmin Jessich
7011050438 media: dvb_ca_en50221: Fixed multiple blank lines
- Running "checkpatch.pl -strict -f ..." complained
  * Please don't use multiple blank lines

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:40:50 -04:00
Jasmin Jessich
13b5164844 media: dvb_ca_en50221: Fixed style issues on the whole file
- Running "checkpatch.pl -strict -f ..." gave more checks to fix.
  * Blank lines aren't necessary after an open brace '{'
  * Comparison to NULL written as "!<var>"
  * CHECK: Blank lines aren't necessary before a close brace '}'

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:40:31 -04:00
Jasmin Jessich
dc32f3244a media: dvb_ca_en50221: Fixed remaining block comments
- Added the missing opening empty comment line.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:40:07 -04:00
Jasmin Jessich
82ec19e4df media: dvb_ca_en50221: Fix again wrong EXPORT_SYMBOL order
Some EXPORT_SYMBOL() on this file don't match the name of functions
that precedes them.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:39:51 -04:00
Jasmin Jessich
4ecb4bfc84 media: dvb_ca_en50221: Fixed typo
- "dont" -> "don't"

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:39:26 -04:00
Jasmin Jessich
96375b7a70 media: dvb_ca_en50221: Fixed 80 char limit
Fixed most of:
  WARNING: line over 80 characters
The remaining lines are printk strings, which should not be split and
lines where I thing they should stay as they are.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:39:05 -04:00
Jasmin Jessich
224457a991 media: dvb_ca_en50221: Fixed C++ comments
- Changed all C++ style comments ("// ..") to C style ones ("/* .. */").

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:35:03 -04:00
Jasmin Jessich
5567d09d2a media: dvb_ca_en50221: Removed unused symbol
- The STATUSREG_TXERR definition is not used and it has style
  problems, too.  Removing it seems to solve both issues.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:34:37 -04:00
Jasmin Jessich
7bd8cc8fff media: dvb_ca_en50221: Removed useless braces
Fixed all:
  WARNING: braces {} are not necessary for single statement blocks

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:34:13 -04:00
Jasmin Jessich
fbabbddd64 media: dvb_ca_en50221: Added line breaks
Fixed all:
  WARNING: Missing a blank line after declarations

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:32:36 -04:00
Jasmin Jessich
a75aa90c7c media: dvb_ca_en50221: Used a helper variable
Used a helper variable "struct dvb_ca_slot *sl" instead of
"ca->slot_info[slot]". This reduces the line length and simplifies
code reading.

Fixed also "-strict" checks in this patch:
- Comparison to NULL written as "!<var>".

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:32:06 -04:00
Jasmin Jessich
bacba9e540 media: dvb_ca_en50221: Avoid assignments in ifs
Fixed all:
  ERROR: do not use assignment in if condition

Fixed also "-strict" checks in this patch:
- Changed "if (ret != 0)" to "if (ret)".
- Camel case variables have been converted to kernel_case.
- Comparison to NULL written as "!<var>".
- No space is necessary after a cast.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:30:04 -04:00
Jasmin Jessich
a1ca23d10e media: dvb_ca_en50221: Fixed block comments
Fixed all:
  WARNING: Block comments use * on subsequent lines
Added also the missing opening empty comment line.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:28:40 -04:00
Jasmin Jessich
b9af29e15a media: dvb_ca_en50221: use usleep_range
Fixed all:
  WARNING: msleep < 20ms can sleep for up to 20ms
by using usleep_range.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:28:18 -04:00
Jasmin Jessich
5d023252cb media: dvb_ca_en50221: New function dvb_ca_en50221_poll_cam_gone
The CAM poll code for the budget-av is exactly the same on several
places. Extracting the code to a new function improves maintainability.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:27:50 -04:00
Jasmin Jessich
a004b70e70 media: dvb_ca_en50221: Refactored dvb_ca_en50221_thread
Refactored "dvb_ca_en50221_thread" by moving the state machine into the
new function "dvb_ca_en50221_thread_state_machine". This reduces the
thread function size and reduces the structural complexity and of course
gives us more space to meet the line length goal in the new function.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-07-20 15:26:52 -04:00
Mauro Carvalho Chehab
a3db9d60a1 Linux v4.13-rc1
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Merge tag 'v4.13-rc1' into patchwork

Linux v4.13-rc1

* tag 'v4.13-rc1': (11136 commits)
  Linux v4.13-rc1
  random: reorder READ_ONCE() in get_random_uXX
  random: suppress spammy warnings about unseeded randomness
  replace incorrect strscpy use in FORTIFY_SOURCE
  kmod: throttle kmod thread limit
  kmod: add test driver to stress test the module loader
  MAINTAINERS: give kmod some maintainer love
  xtensa: use generic fb.h
  fault-inject: add /proc/<pid>/fail-nth
  fault-inject: simplify access check for fail-nth
  fault-inject: make fail-nth read/write interface symmetric
  fault-inject: parse as natural 1-based value for fail-nth write interface
  fault-inject: automatically detect the number base for fail-nth write interface
  kernel/watchdog.c: use better pr_fmt prefix
  MAINTAINERS: move the befs tree to kernel.org
  lib/atomic64_test.c: add a test that atomic64_inc_not_zero() returns an int
  mm: fix overflow check in expand_upwards()
  ubifs: Set double hash cookie also for RENAME_EXCHANGE
  ubifs: Massage assert in ubifs_xattr_set() wrt. init_xattrs
  ubifs: Don't leak kernel memory to the MTD
  ...
2017-07-17 11:17:36 -03:00
Linus Torvalds
0b49ce5a40 media updates for v4.13-rc1
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Merge tag 'media/v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - addition of fwnode support at V4L2 core

 - addition of a few more SDR formats

 - new imx driver to support i.MX6 cameras

 - new driver for Qualcon venus codecs

 - new I2C sensor drivers: dw9714, max2175, ov13858, ov5640

 - new CEC driver: stm32-cec

 - some improvements to DVB frontend documentation and a few fixups

 - several driver improvements and fixups

* tag 'media/v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (361 commits)
  [media] media: entity: Catch unbalanced media_pipeline_stop calls
  [media] media/uapi/v4l: clarify cropcap/crop/selection behavior
  [media] v4l2-ioctl/exynos: fix G/S_SELECTION's type handling
  [media] vimc: sen: Declare vimc_sen_video_ops as static
  [media] vimc: sca: Add scaler
  [media] vimc: deb: Add debayer filter
  [media] vimc: Subdevices as modules
  [media] vimc: cap: Support several image formats
  [media] vimc: sen: Support several image formats
  [media] vimc: common: Add vimc_colorimetry_clamp
  [media] vimc: common: Add vimc_link_validate
  [media] vimc: common: Add vimc_pipeline_s_stream helper
  [media] vimc: common: Add vimc_ent_sd_* helper
  [media] vimc: Move common code from the core
  [media] vimc: sen: Integrate the tpg on the sensor
  [media] media: i2c: ov772x: Force use of SCCB protocol
  [media] dvb uapi docs: enums are passed by value, not reference
  [media] dvb: don't use 'time_t' in event ioctl
  [media] media: venus: enable building with COMPILE_TEST
  [media] af9013: refactor power control
  ...
2017-07-06 11:15:19 -07:00
Ralph Metzler
f894165cb5 media: dvb_ca_en50221: Add block read/write functions
Some lower level drivers may work better when sending blocks of data
instead byte per byte. For this we need new function pointers in the
dvb_ca_en50221 protocol structure (read_data, write_data) and the protocol
needs to execute them, if they are defined.
Block data transmission is done in all states except LINKINIT.

Original code change by Ralph Metzler, modified by Jasmin Jessich and
Daniel Scheller to match Kernel code style.

Signed-off-by: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-06-26 08:15:32 -03:00
Ralph Metzler
5dbddc99ec media: dvb_ca_en50221: Increase timeout for link init
Some CAMs do a really slow initialization, which requires a longer timeout
for the first response.

Original code change by Ralph Metzler, modified by Jasmin Jessich to match
Kernel code style.

Signed-off-by: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-06-26 08:15:04 -03:00
Ralph Metzler
cb61488a2f media: dvb_ca_en50221: State UNINITIALISED instead of INVALID
In case of a linkinit failure change to state UNINITIALISED to re-init
the CAM.

Original code change by Ralph Metzler, modified by Jasmin Jessich to match
Kernel code style.

Signed-off-by: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-06-26 08:13:30 -03:00
Johannes Berg
4df864c1d9 networking: make skb_put & friends return void pointers
It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.

Make these functions (skb_put, __skb_put and pskb_put) return void *
and remove all the casts across the tree, adding a (u8 *) cast only
where the unsigned char pointer was used directly, all done with the
following spatch:

    @@
    expression SKB, LEN;
    typedef u8;
    identifier fn = { skb_put, __skb_put };
    @@
    - *(fn(SKB, LEN))
    + *(u8 *)fn(SKB, LEN)

    @@
    expression E, SKB, LEN;
    identifier fn = { skb_put, __skb_put };
    type T;
    @@
    - E = ((T *)(fn(SKB, LEN)))
    + E = fn(SKB, LEN)

which actually doesn't cover pskb_put since there are only three
users overall.

A handful of stragglers were converted manually, notably a macro in
drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many
instances in net/bluetooth/hci_sock.c. In the former file, I also
had to fix one whitespace problem spatch introduced.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 11:48:39 -04:00
Johannes Berg
59ae1d127a networking: introduce and use skb_put_data()
A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.

An spatch similar to the one for skb_put_zero() converts many
of the places using it:

    @@
    identifier p, p2;
    expression len, skb, data;
    type t, t2;
    @@
    (
    -p = skb_put(skb, len);
    +p = skb_put_data(skb, data, len);
    |
    -p = (t)skb_put(skb, len);
    +p = skb_put_data(skb, data, len);
    )
    (
    p2 = (t2)p;
    -memcpy(p2, data, len);
    |
    -memcpy(p, data, len);
    )

    @@
    type t, t2;
    identifier p, p2;
    expression skb, data;
    @@
    t *p;
    ...
    (
    -p = skb_put(skb, sizeof(t));
    +p = skb_put_data(skb, data, sizeof(t));
    |
    -p = (t *)skb_put(skb, sizeof(t));
    +p = skb_put_data(skb, data, sizeof(t));
    )
    (
    p2 = (t2)p;
    -memcpy(p2, data, sizeof(*p));
    |
    -memcpy(p, data, sizeof(*p));
    )

    @@
    expression skb, len, data;
    @@
    -memcpy(skb_put(skb, len), data, len);
    +skb_put_data(skb, data, len);

(again, manually post-processed to retain some comments)

Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 11:48:37 -04:00
Jasmin Jessich
97adc2b39e [media] dvb_ca_en50221: Fix wrong EXPORT_SYMBOL order
Some EXPORT_SYMBOL() on this file don't match the name of functions
that preceeds them.

Also, some kernel-doc markups also have a wrong name. Fix it.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-06-07 13:21:25 -03:00
Jasmin Jessich
8ec6107aec [media] dvb_ca_en50221: use foo *bar, instead of foo * bar
Make checkpatch happier by fixing this warning:
  ERROR: "foo * bar" should be "foo *bar"

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-06-07 13:14:56 -03:00
Jasmin J
e7080d4471 [media] media/dvb-core: Race condition when writing to CAM
It started with a sporadic message in syslog: "CAM tried to send a
buffer larger than the ecount size" This message is not the fault
itself, but a consecutive fault, after a read error from the CAM. This
happens only on several CAMs, several hardware, and of course sporadic.

It is a consecutive fault, if the last read from the CAM did fail. I
guess this will not happen on all CAMs, but at least it did on mine.
There was a write error to the CAM and during the re-initialization
procedure, the CAM finished the last read, although it got a RS.

The write error to the CAM happened because a race condition between HC
write, checking DA and FR.

This patch added an additional check for DA(RE), just after checking FR.
It is important to read the CAMs status register again, to give the CAM
the necessary time for a proper reaction to HC. Please note the
description within the source code (patch below).

[mchehab@s-opensource.com: make checkpatch happy]

Signed-off-by: Jasmin jessich <jasmin@anw.at>
Tested-by: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-04-17 17:20:23 -03:00
Sakari Ailus
6eb1951d53 [media] docs-rst: media: better document refcount in struct dvb_frontend
The refcount field was added to the struct but it was not
properly documented.

Document it.

[mchehab@s-opensource.com: fix a merge conflict]

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-04-17 16:55:38 -03:00
Mauro Carvalho Chehab
f8da4aad55 [media] dvb_frontend: add kernel-doc tag for a missing parameter
Changeset 1f862a68df ("[media] dvb_frontend: move kref to struct
dvb_frontend") added a kref to the struct dvb_frontend, but it
didn't document it.

Fixes: 1f862a68df ("[media] dvb_frontend: move kref to struct dvb_frontend")

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-04-05 15:35:18 -03:00
Ingo Molnar
174cd4b1e5 sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
Fix up affected files that include this signal functionality via sched.h.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:32 +01:00
Masahiro Yamada
9332ef9dbd scripts/spelling.txt: add "an user" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  an user||a user
  an userspace||a userspace

I also added "userspace" to the list since it is a common word in Linux.
I found some instances for "an userfaultfd", but I did not add it to the
list.  I felt it is endless to find words that start with "user" such as
"userland" etc., so must draw a line somewhere.

Link: http://lkml.kernel.org/r/1481573103-11329-4-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:46 -08:00
Piotr Oleszczyk
430ae1261c [media] add Hama Hybrid DVB-T Stick support
Adding Hama Hybrid DVB-T Stick support. Technically it's the same
device what Terratec Cinergy HT USB XE is.

Signed-off-by: Piotr Oleszczyk <piotr.oleszczyk@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-02-08 10:54:58 -02:00
devendra sharma
e90bbacd8c [media] media: dvb: dmx: fixed coding style issues of spacing
Fixed coding style issues of spacing

Signed-off-by: Devendra Sharma <devendra.sharma9091@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-02-03 11:35:10 -02:00
Shuah Khan
90cd366bc6 [media] media: Protect enable_source and disable_source handler code paths
Drivers might try to access and run enable_source and disable_source
handlers when the driver that implements these handlers is clearing
the handlers during its unregister.

Fix the following race condition:

process 1				process 2

request video streaming			unbind au0828
v4l2 checks if tuner is free
...					...

					au0828_unregister_media_device()
...					...
					(doesn't hold graph_mutex)
					mdev->enable_source = NULL;
if (mdev && mdev->enable_source)	mdev->disable_source = NULL;
	mdev->enable_source()
(enable_source holds graph_mutex)

As shown above enable_source check is done without holding the graph_mutex.
If unbind happens to be in progress, au0828 could clear enable_source and
disable_source handlers leading to null pointer de-reference.

Fix it by protecting enable_source and disable_source set and clear and
protecting enable_source and disable_source handler access and the call
itself.

process 1				process 2

request video streaming			unbind au0828
v4l2 checks if tuner is free
...					...

					au0828_unregister_media_device()
...					...
					(hold graph_mutex while clearing)
					mdev->enable_source = NULL;
if (mdev)				mdev->disable_source = NULL;
(hold graph_mutex to check and
 call enable_source)
    if (mdev->enable_source)
	mdev->enable_source()

If graph_mutex is held to just heck for handler being null and needs to be
released before calling the handler, there will be another window for the
handlers to be cleared. Hence, enable_source and disable_source handlers
no longer hold the graph_mutex and expect callers to hold it to avoid
forcing them release the graph_mutex before calling the handlers.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-02-03 07:39:35 -02:00
Antti Palosaari
992b39872b [media] zd1301: ZyDAS ZD1301 DVB USB interface driver
ZyDAS ZD1301 is chip having USB interface and DVB-T demodulator
integrated. This driver is for USB interface part.

Device has USB ID 0ace:13a1. Used tuner is MT2060.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-02-03 06:47:35 -02:00
Sakari Ailus
bcb63314e2 [media] media: Drop FSF's postal address from the source code files
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.

The patch has been created with the following command without manual edits:

git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
	drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
	&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
2017-01-27 11:38:09 -02:00
Mauro Carvalho Chehab
bd361f5de2 Linux 4.10-rc1
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Merge tag 'v4.10-rc1' into patchwork

Linux 4.10-rc1

* tag 'v4.10-rc1': (11427 commits)
  Linux 4.10-rc1
  powerpc: Fix build warning on 32-bit PPC
  avoid spurious "may be used uninitialized" warning
  mm: add PageWaiters indicating tasks are waiting for a page bit
  mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked
  ktime: Get rid of ktime_equal()
  ktime: Cleanup ktime_set() usage
  ktime: Get rid of the union
  clocksource: Use a plain u64 instead of cycle_t
  irqchip/armada-xp: Consolidate hotplug state space
  irqchip/gic: Consolidate hotplug state space
  coresight/etm3/4x: Consolidate hotplug state space
  cpu/hotplug: Cleanup state names
  cpu/hotplug: Remove obsolete cpu hotplug register/unregister functions
  staging/lustre/libcfs: Convert to hotplug state machine
  scsi/bnx2i: Convert to hotplug state machine
  scsi/bnx2fc: Convert to hotplug state machine
  cpu/hotplug: Prevent overwriting of callbacks
  x86/msr: Remove bogus cleanup from the error path
  bus: arm-ccn: Prevent hotplug callback leak
  ...
2016-12-26 14:11:35 -02:00
Thomas Gleixner
8b0e195314 ktime: Cleanup ktime_set() usage
ktime_set(S,N) was required for the timespec storage type and is still
useful for situations where a Seconds and Nanoseconds part of a time value
needs to be converted. For anything where the Seconds argument is 0, this
is pointless and can be replaced with a simple assignment.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
2016-12-25 17:21:22 +01:00
Linus Torvalds
7c0f6ba682 Replace <asm/uaccess.h> with <linux/uaccess.h> globally
This was entirely automated, using the script by Al:

  PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>'
  sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \
        $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)

to do the replacement at the end of the merge window.

Requested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-24 11:46:01 -08:00