media: dvb_frontend: fix return values for FE_SET_PROPERTY
There are several problems with regards to the return of
FE_SET_PROPERTY. The original idea were to return per-property
return codes via tvp->result field, and to return an updated
set of values.
However, that never worked. What's actually implemented is:
- the FE_SET_PROPERTY implementation doesn't call .get_frontend
callback in order to get the actual parameters after return;
- the tvp->result field is only filled if there's no error.
So, it is always filled with zero;
- FE_SET_PROPERTY doesn't call memdup_user() nor any other
copy_to_user() function. So, any changes to the properties
will be lost;
- FE_SET_PROPERTY is declared as a write-only ioctl (IOW).
While we could fix the above, it could cause regressions.
So, let's just assume what the code really does, updating
the documentation accordingly and removing the logic that
would update the discarded tvp->result.
media: dvb_frontend: get rid of property cache's state
In the past, I guess the idea was to use state in order to
allow an autofush logic. However, in the current code, it is
used only for debug messages, on a poor man's solution, as
there's already a debug message to indicate when the properties
got flushed.
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.
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>
This callback is not actually doing anything but making it to
return an error depending on the DTV frontend command. Well,
that could break userspace for no good reason, and, if needed,
should be implemented, instead, at set_frontend() callback.
The stv6110 has a weird code that checks if get_property
and set_property ioctls are defined. If they're, it initializes
a "srate" var from properties cache. Otherwise, it sets to
15MBaud, with won't make any sense.
Thankfully, it seems that someone else discovered the issue in
the past, as "srate" is currently not used anywhere!
Marc Gonzalez [Fri, 6 Oct 2017 12:23:37 +0000 (08:23 -0400)]
media: dt: bindings: Add binding for tango HW IR decoder
Add DT binding for the HW IR decoder embedded in SMP86xx/SMP87xx.
Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Mans Rullgard [Fri, 6 Oct 2017 12:37:50 +0000 (08:37 -0400)]
media: rc: Add driver for tango HW IR decoder
The tango HW IR decoder supports NEC, RC-5, RC-6 protocols.
Signed-off-by: Mans Rullgard <mans@mansr.com> Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Marc Gonzalez [Fri, 6 Oct 2017 12:33:41 +0000 (08:33 -0400)]
media: rc: Add tango keymap
Add a keymap for the Sigma Designs Vantage (dev board) remote control.
Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
David Härdeman [Sun, 25 Jun 2017 12:31:30 +0000 (08:31 -0400)]
media: lirc_dev: remove min_timeout and max_timeout
There are no users of this functionality (ir-lirc-codec.c has its own
implementation and lirc_zilog.c doesn't use it) so remove it.
This only affects users of the lirc kapi, not rc-core drivers.
Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
drivers/media/rc/gpio-ir-recv.c: In function 'gpio_ir_recv_irq':
>> drivers/media/rc/gpio-ir-recv.c:38:8: error: implicit declaration of function 'gpiod_get_value' [-Werror=implicit-function-declaration]
Fixes: eed008e605d1 ("[media] media: rc: gpio-ir-recv: use gpiolib API")
For some reason only partial patch was applied. Also include
gpio/consumer.h otherwise compile test fails.
Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Acked-by: Sean Young <sean@mess.org>
Sakari Ailus [Tue, 29 Aug 2017 12:41:25 +0000 (09:41 -0300)]
[media] smiapp: Make clock control optional
The clock control is not explicitly controlled by the driver in two cases:
ACPI based systems and when the clock is part of the power sequence of the
camera module.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Sakari Ailus [Tue, 29 Aug 2017 12:41:24 +0000 (09:41 -0300)]
[media] smiapp: Get clock rate if it's not available through DT
Obtain the clock rate from the clock framework if it's not available
through DT. The assumption is that the parent device (camera module)
defines the rate as clock control is a part of the power on and power off
sequences --- which are camera module specific.
Also use the clock rate from DT if no clock is provided.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Sakari Ailus [Tue, 29 Aug 2017 12:41:23 +0000 (09:41 -0300)]
[media] smiapp: Verify clock frequency after setting it, prevent changing it
The external clock frequency was set by the driver but the obtained
frequency was never verified. Do that.
Being able to obtain the exact frequency is important as the value is used
for PLL calculations which may result in frequencies that violate the PLL
tree limits.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
[media] media: ov13858: Fix 4224x3136 video flickering at some vblanks
Previously, with crop (0, 0), (4255, 3167), VTS < 0xC9E was resulting in
blank frames sometimes. This appeared as video flickering. But we need VTS
< 0xC9E to get ~30fps.
Omni Vision recommends to use crop (0,8), (4255, 3159) for 4224x3136. With
this crop, VTS 0xC8E is supported and yields ~30fps.
Signed-off-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com> Reviewed-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Colin Ian King [Tue, 12 Sep 2017 09:11:15 +0000 (06:11 -0300)]
[media] ov2640: make array reset_seq static, reduces object code size
Don't populate the array reset_seq on the stack, instead make it
static. Makes the object code smaller by over 50 bytes:
Before:
text data bss dec hex filename
11737 6000 64 17801 4589 drivers/media/i2c/ov2640.o
After:
text data bss dec hex filename
11582 6096 64 17742 454e drivers/media/i2c/ov2640.o
Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Sakari Ailus [Mon, 5 Oct 2015 15:45:29 +0000 (12:45 -0300)]
[media] media: Check for active and has_no_links overrun
The active and has_no_links arrays will overrun in
media_entity_pipeline_start() if there's an entity which has more than
MEDIA_ENTITY_MAX_PAD pads. Ensure in media_entity_init() that there are
fewer pads than that.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Markus Elfring [Sat, 2 Sep 2017 14:09:35 +0000 (11:09 -0300)]
[media] i2c: Improve a size determination
Replace the specification of a data structure by pointer dereferences
as the parameter for the operator "sizeof" to make size
determination a bit safer according to the Linux coding style convention.
This issue was detected by using the Coccinelle software.
[mchehab@s-opensource.com: merged similar patches] Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Rajmohan Mani [Wed, 30 Aug 2017 17:48:52 +0000 (14:48 -0300)]
[media] dw9714: Set the v4l2 focus ctrl step as 1
Current v4l2 focus ctrl step value of 16, limits the minimum granularity
of focus positions to 16. Setting this value as 1, enables more accurate
focus positions.
[media] media: ov5670: Use recommended black level and output bias
Previously, images were relatively darker due to non-optimal
settings for black target level and bias.
Now, use recommended settings for black target level and output bias
as default values. The same default settings apply to all the resolutions.
Given these recommeneded settings do not change dynamically, add these to
existing mode register settings.
Hans Verkuil [Mon, 25 Sep 2017 09:41:02 +0000 (06:41 -0300)]
[media] v4l2-ctrls.c: allow empty control handlers
If you have a control handler that does not contain any controls, then
currently calling VIDIOC_G/S/TRY_EXT_CTRLS with count == 0 will return
-EINVAL in the class_check() function.
This is not correct, there is no reason why this should return an error.
The purpose of setting count to 0 is to test if the ioctl can mix controls
from different control classes. And this is possible. The fact that there
are not actually any controls defined is another matter that is unrelated
to this test.
This caused v4l2-compliance to fail, so that is fixed with this patch applied.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Dave Stevenson <dave.stevenson@raspberrypi.org> Tested-by: Dave Stevenson <dave.stevenson@raspberrypi.org> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Johan Hovold [Thu, 21 Sep 2017 08:40:18 +0000 (05:40 -0300)]
[media] cx231xx-cards: fix NULL-deref on missing association descriptor
Make sure to check that we actually have an Interface Association
Descriptor before dereferencing it during probe to avoid dereferencing a
NULL-pointer.
This converts to use setup_timer() to set callback and data, though it
doesn't look like this would have worked with timer checking enabled
since no init_timer() was ever called before.
[media] rcar_drif: fix potential uninitialized variable use
Older compilers like gcc-4.6 may run into a case that returns
an uninitialized variable from rcar_drif_enable_rx() if that
function was ever called with an empty cur_ch_mask:
drivers/media/platform/rcar_drif.c:658:2: error: ‘ret’ may be used uninitialized in this function [-Werror=uninitialized]
Newer compilers don't have that problem as they optimize the
'ret' variable away and just return zero in that case.
This changes the function to return -EINVAL for this particular
failure, to make it consistent across all compiler versions.
In case gcc gets changed to report a warning for it in the
future, it's also a good idea to shut it up now.
Make these const as they are not modified in the file referencing them.
They are only used when their function pointer fields invokes a
function and therefore none of the structure fields are getting modified.
Also, add a const to the declaration in the header.
Colin Ian King [Tue, 12 Sep 2017 11:08:13 +0000 (08:08 -0300)]
[media] gspca: make arrays static, reduces object code size
Don't populate const arrays on the stack, instead make them
static. Makes the object code smaller by over 5200 bytes:
Before:
text data bss dec hex filename
58259 8880 128 67267 106c3 ov519.o
After:
text data bss dec hex filename
52155 9776 128 62059 f26b ov519.o
Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Simon Yuan [Mon, 11 Sep 2017 22:26:53 +0000 (19:26 -0300)]
[media] media: i2c: adv748x: Map v4l2_std_id to the internal reg value
The video standard was not mapped to the corresponding value of the
internal video standard in adv748x_afe_querystd, causing the wrong
video standard to be selected.
Fixes: 3e89586a64df ("media: i2c: adv748x: add adv748x driver")
[Kieran: Obtain the std from the afe->curr_norm]
Signed-off-by: Simon Yuan <simon.yuan@navico.com> Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Markus Elfring [Tue, 29 Aug 2017 10:45:59 +0000 (07:45 -0300)]
[media] imon: Improve a size determination in two functions
Replace the specification of data structures by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Marc Gonzalez [Mon, 18 Sep 2017 14:31:41 +0000 (11:31 -0300)]
[media] media: rc: Delete duplicate debug message
ir_setkeytable() and ir_create_table() print the same debug message.
Delete the one in ir_setkeytable()
Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The Linus policy on Kconfig is that the default should be no
for all new devices. I.e the user rebuild a new kernel from an
old config should not by default get a larger kernel.
Fixes: b4c184e506a4 ("[media] media: reorganize the main Kconfig items") Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Ladislav Michl [Thu, 7 Sep 2017 23:41:32 +0000 (20:41 -0300)]
[media] media: rc: gpio-ir-recv: use gpiolib API
Gpiolib API is preferred way to access gpios.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
gpio_ir_recv_platform_data are not used anywhere in kernel tree,
so remove it.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Ladislav Michl [Thu, 7 Sep 2017 23:39:14 +0000 (20:39 -0300)]
[media] media: rc: gpio-ir-recv: use KBUILD_MODNAME
There already is standard macro providing driver name, use it.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Ladislav Michl [Thu, 7 Sep 2017 23:38:20 +0000 (20:38 -0300)]
[media] media: rc: gpio-ir-recv: use devm_request_irq
Use of devm_request_irq simplifies error unwinding and as
free_irq was the last user of driver remove function,
remove it too.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Ladislav Michl [Thu, 7 Sep 2017 23:37:36 +0000 (20:37 -0300)]
[media] media: rc: gpio-ir-recv: do not allow threaded interrupt handler
Requesting any context irq is not actually great idea since threaded
interrupt handler is run at too unpredictable time which turns
timing information wrong. Fix it by requesting regular interrupt.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Ladislav Michl [Thu, 7 Sep 2017 23:37:07 +0000 (20:37 -0300)]
[media] media: rc: gpio-ir-recv: use devm_rc_register_device
Use of devm_rc_register_device simplifies error unwinding.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Ladislav Michl [Thu, 7 Sep 2017 23:36:39 +0000 (20:36 -0300)]
[media] media: rc: gpio-ir-recv: use devm_gpio_request_one
Use of devm_gpio_request_one simplifies error unwinding.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Ladislav Michl [Thu, 7 Sep 2017 23:36:11 +0000 (20:36 -0300)]
[media] media: rc: gpio-ir-recv: use devm_rc_allocate_device
Use of devm_rc_allocate_device simplifies error unwinding.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Ladislav Michl [Thu, 7 Sep 2017 23:35:22 +0000 (20:35 -0300)]
[media] media: rc: gpio-ir-recv: use devm_kzalloc
Use of devm_kzalloc simplifies error unwinding.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Ladislav Michl [Thu, 7 Sep 2017 23:34:35 +0000 (20:34 -0300)]
[media] media: rc: gpio-ir-recv: use helper variable to access device info
Using explicit struct device variable makes code a bit more readable.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Colin Ian King [Tue, 5 Sep 2017 12:07:50 +0000 (09:07 -0300)]
[media] media: imon: make two const arrays static, reduces object code size
Don't populate the const arrays vfd_packet6 and fp_packet on the
stack, instead make them static. Makes the object code smaller
by over 600 bytes:
Before:
text data bss dec hex filename
43794 17920 1024 62738 f512 drivers/media/rc/imon.o
After:
text data bss dec hex filename
42994 18080 1024 62098 f292 drivers/media/rc/imon.o
Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Sean Young [Wed, 6 Sep 2017 11:19:06 +0000 (08:19 -0300)]
[media] media: vp7045: port TwinhanDTV Alpha to rc-core
Only the nec protocol is understood, but then it doesn't pass on
the full scancode and it ignores the nec repeats its own remote
sends, so holding buttons does not work.
Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Markus Elfring [Tue, 29 Aug 2017 19:04:20 +0000 (16:04 -0300)]
[media] media: img-ir: delete an error message for a failed memory allocation
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Markus Elfring [Tue, 29 Aug 2017 10:40:07 +0000 (07:40 -0300)]
[media] media: imon: delete an error message for a failed memory allocation
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Arvind Yadav [Sun, 13 Aug 2017 08:54:44 +0000 (05:54 -0300)]
[media] media: rc: constify usb_device_id
usb_device_id are not supposed to change at runtime. All functions
working with usb_device_id provided by <linux/usb.h> work with
const usb_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
David Härdeman [Sun, 25 Jun 2017 12:32:36 +0000 (09:32 -0300)]
[media] media: lirc_dev: merge struct irctl into struct lirc_dev
The use of two separate structs (lirc_dev aka lirc_driver and irctl) makes
it much harder to follow the proper lifetime of the various structs and
necessitates hacks such as keeping a copy of struct lirc_dev inside
struct irctl.
Merging the two structs means that lirc_dev can properly manage the
lifetime of the resulting struct and simplifies the code at the same time.
[mchehab@s-opensource.com: fix merge conflict] Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
David Härdeman [Sun, 25 Jun 2017 12:32:31 +0000 (09:32 -0300)]
[media] media: lirc_zilog: use a dynamically allocated lirc_dev
lirc_zilog currently embeds a struct lirc_dev in its own struct IR,
but subsequent patches will make the lifetime of struct lirc_dev
dynamic (i.e. it will be free():d once lirc_dev is sure there are
no users of the struct).
Therefore, change lirc_zilog to use a pointer to a dynamically
allocated struct lirc_dev.
Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
David Härdeman [Sun, 25 Jun 2017 12:32:25 +0000 (09:32 -0300)]
[media] media: lirc_zilog: add a pointer to the parent device to struct IR
lirc_zilog stashes a pointer to the parent device in struct lirc_dev
and uses it for logging. It makes more sense to let lirc_zilog keep
track of that pointer in its own struct (this is in preparation for
subsequent patches which will remodel struct lirc_dev).
Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
David Härdeman [Thu, 21 Sep 2017 19:13:34 +0000 (16:13 -0300)]
[media] media: rename struct lirc_driver to struct lirc_dev
This is in preparation for the later patches which do away with
struct irctl entirely.
Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
David Härdeman [Sun, 25 Jun 2017 12:32:05 +0000 (09:32 -0300)]
[media] media: lirc_dev: use an IDA instead of an array to keep track of registered devices
Using the kernel-provided IDA simplifies the code and makes it possible
to remove the lirc_dev_lock mutex.
Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
David Härdeman [Fri, 30 Jun 2017 08:41:57 +0000 (05:41 -0300)]
[media] media: lirc_dev: sanitize locking
Use the irctl mutex for all device operations and only use lirc_dev_lock
to protect the irctls array. Also, make sure that the device is alive
early in each fops function before doing anything else.
Since this patch touches nearly every line where the irctl mutex is
taken/released, it also renames the mutex at the same time (the name
irctl_lock will be misleading once struct irctl goes away in later
patches).
[mchehab@s-opensource.com: fix a merge conflict] Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
David Härdeman [Sun, 25 Jun 2017 12:31:55 +0000 (09:31 -0300)]
[media] media: lirc_dev: change irctl->attached to be a boolean
The "attached" member of struct irctl is a boolean value, so let the code
reflect that.
Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
David Härdeman [Sun, 25 Jun 2017 12:31:45 +0000 (09:31 -0300)]
[media] media: lirc_dev: make chunk_size and buffer_size mandatory
Make setting chunk_size and buffer_size mandatory for drivers which
expect lirc_dev to allocate the lirc_buffer (i.e. ir-lirc-codec) and
don't set them in lirc-zilog (which creates its own buffer).
Also remove an unnecessary copy of chunk_size in struct irctl (the
same information is already available from struct lirc_buffer).
Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
David Härdeman [Sun, 25 Jun 2017 12:31:40 +0000 (09:31 -0300)]
[media] media: lirc_dev: make better use of file->private_data
By making better use of file->private_data in lirc_dev we can avoid
digging around in the irctls[] array, thereby simplifying the code.
External drivers need to use lirc_get_pdata() instead of mucking around
in file->private_data.
The newly introduced lirc_init_pdata() function isn't very elegant, but
it's a stopgap measure which can be removed once lirc_zilog is converted
to rc-core.
Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
David Härdeman [Sun, 25 Jun 2017 12:31:35 +0000 (09:31 -0300)]
[media] media: lirc_dev: use cdev_device_add() helper function
Replace calls to cdev_add() and device_add() with the cdev_device_add()
helper function.
Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
David Härdeman [Sun, 25 Jun 2017 12:31:24 +0000 (09:31 -0300)]
[media] media: lirc_dev: remove support for manually specifying minor number
All users of lirc_register_driver() uses dynamic minor allocation,
therefore we can remove the ability to explicitly request a given number.
This changes the function prototype of lirc_unregister_driver() to also
take a struct lirc_driver pointer as the sole argument.
Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
David Härdeman [Sun, 25 Jun 2017 12:31:19 +0000 (09:31 -0300)]
[media] media: lirc_dev: clarify error handling
If an error is generated, it is more logical to error out ASAP.
Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Merge tag 'devicetree-fixes-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree fixes from Rob Herring:
- fix build for !OF providing empty of_find_device_by_node
- fix Abracon vendor prefix
- sync dtx_diff include paths (again)
- a stm32h7 clock binding doc fix
* tag 'devicetree-fixes-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: clk: stm32h7: fix clock-cell size
scripts/dtc: dtx_diff - 2nd update of include dts paths to match build
dt-bindings: fix vendor prefix for Abracon
of: provide inline helper for of_find_device_by_node
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Another round of CR3/PCID related fixes (I think this addresses all
but one of the known problems with PCID support), an objtool fix plus
a Clang fix that (finally) solves all Clang quirks to build a bootable
x86 kernel as-is"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/asm: Fix inline asm call constraints for Clang
objtool: Handle another GCC stack pointer adjustment bug
x86/mm/32: Load a sane CR3 before cpu_init() on secondary CPUs
x86/mm/32: Move setup_clear_cpu_cap(X86_FEATURE_PCID) earlier
x86/mm/64: Stop using CR3.PCID == 0 in ASID-aware code
x86/mm: Factor out CR3-building code
projects / mirror_ubuntu-bionic-kernel.git / log