Commit Graph

737151 Commits

Author SHA1 Message Date
Hans Verkuil
40de44bbe0 media: mt9t031: deprecate, move to staging
This driver is unused and depends on the deprecated soc-camera framework.
Move it to staging in preparation for being removed unless someone does
the work to convert it to a proper V4L2 subdev driver.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-23 02:31:38 -05:00
Hans Verkuil
0f966bec71 media: imx074: deprecate, move to staging
This driver is unused and depends on the deprecated soc-camera framework.
Move it to staging in preparation for being removed unless someone does
the work to convert it to a proper V4L2 subdev driver.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-23 02:30:26 -05:00
Yong Zhi
b39082e2be media: intel-ipu3: cio2: Use SPDX license headers
Adopt SPDX license headers for ipu3 cio2 driver.

Signed-off-by: Yong Zhi <yong.zhi@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-23 02:28:18 -05:00
Yong Zhi
d69a5a2cd1 media: intel-ipu3: cio2: Disable and sync irq before stream off
This is to avoid pending interrupts to be handled during
stream off, in which case, the ready buffer will be removed
from buffer list, thus not all buffers can be returned to VB2
as expected. Disable CIO2 irq at cio2_hw_exit() so no new
interrupts are generated.

Signed-off-by: Yong Zhi <yong.zhi@intel.com>
Signed-off-by: Tianshu Qiu <tian.shu.qiu@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-23 02:26:07 -05:00
Jasmin Jessich
43df6ea0c6 media: uvcvideo: Fixed ktime_t to ns conversion
Commit 828ee8c719 ("media: uvcvideo: Use ktime_t for timestamps")
changed to use ktime_t for timestamps. Older Kernels use a struct for
ktime_t, which requires the conversion function ktime_to_ns to be used on
some places. With this patch it will compile now also for older Kernel
versions.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-23 02:24:29 -05:00
Laurent Pinchart
f14d4988c2 media: uvcvideo: Use parentheses around sizeof operand
While the sizeof is an operator and not a function, the preferred coding
style in the kernel is to enclose its operand in parentheses. To avoid
mixing multiple coding styles in the driver, use parentheses around all
sizeof operands.

While at it replace a kmalloc() with a kmalloc_array() to silence a
checkpatch warning triggered by this patch.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-23 02:23:24 -05:00
Laurent Pinchart
2c6b222cee media: uvcvideo: Use internal kernel integer types
Replace the __[su]{8,16,32} variant of integer types with the
non-underscored types as the code is internal to the driver, not exposed
to userspace.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-23 02:20:52 -05:00
Laurent Pinchart
1e304c47ef media: uvcvideo: Use kernel integer types
Replace the uint_{8,16,32} types with the corresponding native kernel
types u{8,16,32}.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-23 02:17:17 -05:00
Laurent Pinchart
cb9cd6c5c3 media: uvcvideo: Drop extern keyword in function declarations
The extern keyword isn't needed to declare functions in header files.
Drop it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-23 02:16:03 -05:00
Philipp Zabel
07b7d9fc2a media: uvcvideo: Support multiple frame descriptors with the same dimensions
The Microsoft HoloLens Sensors device has two separate frame descriptors
with the same dimensions, each with a single different frame interval:

      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         1
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                           1280
        wHeight                           481
        dwMinBitRate                147763200
        dwMaxBitRate                147763200
        dwMaxVideoFrameBufferSize      615680
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)            333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         2
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                           1280
        wHeight                           481
        dwMinBitRate                443289600
        dwMaxBitRate                443289600
        dwMaxVideoFrameBufferSize      615680
        dwDefaultFrameInterval         111111
        bFrameIntervalType                  1
        dwFrameInterval( 0)            111111

Skip duplicate dimensions in enum_framesizes, let enum_frameintervals list
the intervals from both frame descriptors. Change set_streamparm to switch
to the correct frame index when changing the interval. This enables 90 fps
capture on a Lenovo Explorer Windows Mixed Reality headset.

[laurent.pinchart@ideasonboard.com: Renamed tmp_ival to ival]

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-23 02:10:41 -05:00
Edgar Thier
859086ae36 media: uvcvideo: Apply flags from device to actual properties
Use flags the device exposes for UVC controls.
This allows the device to define which property flags are set.

Since some cameras offer auto-adjustments for properties (e.g. auto-gain),
the values of other properties (e.g. gain) can change in the camera.
Examining the flags ensures that the driver is aware of such properties.

Signed-off-by: Edgar Thier <info@edgarthier.net>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-23 02:04:13 -05:00
Mauro Carvalho Chehab
4395fb475a tda1997x: get rid of an unused var
1 warning regressions:
  + drivers/media/i2c/tda1997x.c: warning: variable 'last_irq_status' set but not used [-Wunused-but-set-variable]:  => 1421:17

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:54:28 -05:00
Tim Harvey
9ac0038db9 media: i2c: Add TDA1997x HDMI receiver driver
Add support for the TDA1997x HDMI receivers.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
[hans.verkuil@cisco.com: fix type 'testin' -> 'testing']
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:53:32 -05:00
Tim Harvey
10c1d542c7 media: dt-bindings: Add bindings for TDA1997X
Define the device tree bindings for the TDA1997X.

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
[hans.verkuil@cisco.com: make a proper commit message]
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:45:42 -05:00
Tim Harvey
4cd9659ee9 media: MAINTAINERS: add entry for NXP TDA1997x driver
Add new MAINTAINERS entry.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
[hans.verkuil@cisco.com: make a proper commit message]
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:44:15 -05:00
Tim Harvey
5271a98cd8 media: add digital video decoder entity functions
Add a new media entity function definition for digital TV decoders:
MEDIA_ENT_F_DTV_DECODER

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:43:47 -05:00
Tim Harvey
c4455c265e media: v4l-ioctl: fix clearing pad for VIDIOC_DV_TIMINGS_CAP
The pad field was inadvertently cleared. Fix this. It's needed for subdevs.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
[hans.verkuil@cisco.com: make a proper commit message]
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:41:39 -05:00
Hans Verkuil
357a856a6c media: v4l2-dv-timings: add v4l2_hdmi_colorimetry()
Add the v4l2_hdmi_colorimetry() function so we have a single function
that determines the colorspace, YCbCr encoding, quantization range and
transfer function from the InfoFrame data.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:41:09 -05:00
Hans Verkuil
bd2a0f082b media: vidioc-g-parm.rst: also allow _MPLANE buffer types
The specification mentions that type can be V4L2_BUF_TYPE_VIDEO_CAPTURE,
but the v4l2 core implementation also allows the _MPLANE variant.

Document this.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:32:25 -05:00
Hans Verkuil
8180b4f4f5 media: v4l2-subdev.h: remove obsolete g/s_parm
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:31:59 -05:00
Sakari Ailus
34c0dffad6 media: staging: atomisp: Drop g_parm and s_parm subdev ops use
The s_parm and g_parm did nothing. Remove them.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:31:19 -05:00
Sakari Ailus
b0840deade media: staging: atomisp: mt9m114: Drop empty s_parm callback
The s_parm callback in mt9m114 driver did nothing, remove it.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:30:35 -05:00
Sakari Ailus
f6c773b470 media: staging: atomisp: i2c: Drop g_parm support in sensor drivers
These drivers already support g_frame_interval. Therefore just dropping
g_parm is enough.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:30:17 -05:00
Sakari Ailus
718df0a814 media: staging: atomisp: i2c: Disable non-preview configurations
These sensor drivers have use case specific mode lists. This is currently
not used nor there is a standard API for selecting the mode list. Disable
configurations for non-preview modes until configuration selection is
improved so that all the configurations are always usable.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
[hans.verkuil@cisco.com: clarify that this functionality it currently unused]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:29:33 -05:00
Sakari Ailus
f97b8e6baa media: staging: atomisp: Kill subdev s_parm abuse
Remove sensor driver's interface for setting the use case specific mode
list as well as the mode lists that are related to other than
CI_MODE_PREVIEW. This removes s_parm abuse in using driver specific values
in v4l2_streamparm.capture.capturemode. The drivers already support
[gs]_frame_interval so removing support for [gs]_parm is enough.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:28:46 -05:00
Hans Verkuil
4471109e38 media: convert g/s_parm to g/s_frame_interval in subdevs
Convert all g/s_parm calls to g/s_frame_interval. This allows us
to remove the g/s_parm ops since those are a duplicate of
g/s_frame_interval.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:27:35 -05:00
Hans Verkuil
672de9a79c media: v4l2-common: create v4l2_g/s_parm_cap helpers
Create helpers to handle VIDIOC_G/S_PARM by querying the
g/s_frame_interval v4l2_subdev ops.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:25:33 -05:00
Hans Verkuil
7c8a940a5e media: v4l2-subdev: clear reserved fields
Clear the reserved fields for these ioctls according to the specification:

VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL
VIDIOC_SUBDEV_ENUM_FRAME_SIZE
VIDIOC_SUBDEV_ENUM_MBUS_CODE
VIDIOC_SUBDEV_G_CROP, VIDIOC_SUBDEV_S_CROP
VIDIOC_SUBDEV_G_FMT, VIDIOC_SUBDEV_S_FMT
VIDIOC_SUBDEV_G_FRAME_INTERVAL, VIDIOC_SUBDEV_S_FRAME_INTERVAL
VIDIOC_SUBDEV_G_SELECTION, VIDIOC_SUBDEV_S_SELECTION

Found with v4l2-compliance.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22 12:23:44 -05:00
Sean Young
2942273701 media: rc: get start time just before calling driver tx
The current code gets the start time before copying the IR from
userspace (could cause page faults) and encoding IR. This means
that the gap calculation could be off.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 14:17:21 -05:00
Sean Young
c2837ad090 media: rc: remove useless if statement
ret is always 0, so remove if statement.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 14:16:39 -05:00
Sean Young
ba02086dee media: rc: remove obsolete comment
This comment is no longer relevant.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 14:16:14 -05:00
Sean Young
1f17f684d9 media: rc: remove IR_dprintk() from rc-core
Use dev_dbg() rather than custom debug function.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 14:15:46 -05:00
Sean Young
50078a9038 media: rc: replace IR_dprintk() with dev_dbg in IR decoders
Use dev_dbg() rather than custom debug function.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 14:14:32 -05:00
Sean Young
069edf8a6a media: rc: ir-spi: fix duty cycle
Calculate the pulse rather than having a few preset values.

Signed-off-by: Sean Young <sean@mess.org>
Acked-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:36:00 -05:00
Alexey Khoroshilov
de5b22d987 media: rc: ir-hix5hd2: fix error handling of clk_prepare_enable()
Return code of clk_prepare_enable() is ignored in many places.
The patch adds error handling for all of them.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:35:05 -05:00
Andi Kleen
22756ae731 media: rc: don't mark IR decoders default y
I usually update my config with make oldconfig and pressing return,
trusting that whoever updates Kconfig sets sensible defaults.

But my recent kernels ended up with all kinds of IR decoders
built in that are not used by anything because they are all
marked with default y.

default y should only be set for something that prevents
booting on common systems, never for some random weirdo
driver feature like this.

Remove all the "default y" in drivers/media/rc/Kconfig

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:34:15 -05:00
Florian Echtler
cee1e3e2ef media: add video control handlers using V4L2 control framework
This patch registers four standard control handlers using the corresponding
V4L2 framework.

Signed-off-by: Florian Echtler <floe@butterbrot.org>
[hans.verkuil@cisco.com: lower-cased 0x0F and 0xF0]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:29:55 -05:00
Florian Echtler
bbc0c4eb6b media: add panel register access functions
These functions provide write access to the internal LCD panel registers
which also control the sensor. They can be used to disable the
preprocessor, set the illumination brightness, and adjust gain/contrast
(which are stored together in one register internally called "vsvideo").

Signed-off-by: Florian Echtler <floe@butterbrot.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:29:14 -05:00
Florian Echtler
4e6c558148 media: add default settings and module parameters for video controls
This patch adds parameter definitions and module parameters for the four
userspace controls that the SUR40 can currently provide.

Signed-off-by: Florian Echtler <floe@butterbrot.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:28:45 -05:00
Florian Echtler
0a90448ead media: add missing blob structure field for tag id
The SUR40 can recognize specific printed patterns directly in hardware;
this information (i.e. the pattern id) is present but currently unused
in the blob structure.

Signed-off-by: Florian Echtler <floe@butterbrot.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:27:52 -05:00
Hans Verkuil
ab15d248cc media: include/(uapi/)media: add SPDX license info
Replace the old license information with the corresponding SPDX
license for those headers that I authored.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:23:51 -05:00
Hans Verkuil
ddddfa78ac media: add SPDX license info
Replace the old license information with the corresponding SPDX
license for the remaining media drivers that Cisco authored.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:17:03 -05:00
Hans Verkuil
55e5927eb1 media: i2c: add SPDX license info
Replace the old license information with the corresponding SPDX
license for those drivers Cisco authored.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:16:31 -05:00
Hans Verkuil
b4e30a9e05 media: cec: add SPDX license info
Replace the old license information with the corresponding SPDX
license.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:16:03 -05:00
Hans Verkuil
6884db3c5f media: cobalt: add SPDX license info
Replace the old license information with the corresponding SPDX
license.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:15:33 -05:00
Hans Verkuil
67a5135a64 media: vivid: add SPDX license info
Replace the old license information with the corresponding SPDX
license.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-14 13:14:31 -05:00
Linus Torvalds
7928b2cbe5 Linux 4.16-rc1 2018-02-11 15:04:29 -08:00
Al Viro
7a163b2195 unify {de,}mangle_poll(), get rid of kernel-side POLL...
except, again, POLLFREE and POLL_BUSY_LOOP.

With this, we finally get to the promised end result:

 - POLL{IN,OUT,...} are plain integers and *not* in __poll_t, so any
   stray instances of ->poll() still using those will be caught by
   sparse.

 - eventpoll.c and select.c warning-free wrt __poll_t

 - no more kernel-side definitions of POLL... - userland ones are
   visible through the entire kernel (and used pretty much only for
   mangle/demangle)

 - same behavior as after the first series (i.e. sparc et.al. epoll(2)
   working correctly).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-11 14:37:22 -08:00
Linus Torvalds
a9a08845e9 vfs: do bulk POLL* -> EPOLL* replacement
This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-11 14:34:03 -08:00
Linus Torvalds
ee5daa1361 Merge branch 'work.poll2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more poll annotation updates from Al Viro:
 "This is preparation to solving the problems you've mentioned in the
  original poll series.

  After this series, the kernel is ready for running

      for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
            L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
            for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
      done

  as a for bulk search-and-replace.

  After that, the kernel is ready to apply the patch to unify
  {de,}mangle_poll(), and then get rid of kernel-side POLL... uses
  entirely, and we should be all done with that stuff.

  Basically, that's what you suggested wrt KPOLL..., except that we can
  use EPOLL... instead - they already are arch-independent (and equal to
  what is currently kernel-side POLL...).

  After the preparations (in this series) switch to returning EPOLL...
  from ->poll() instances is completely mechanical and kernel-side
  POLL... can go away. The last step (killing kernel-side POLL... and
  unifying {de,}mangle_poll() has to be done after the
  search-and-replace job, since we need userland-side POLL... for
  unified {de,}mangle_poll(), thus the cherry-pick at the last step.

  After that we will have:

   - POLL{IN,OUT,...} *not* in __poll_t, so any stray instances of
     ->poll() still using those will be caught by sparse.

   - eventpoll.c and select.c warning-free wrt __poll_t

   - no more kernel-side definitions of POLL... - userland ones are
     visible through the entire kernel (and used pretty much only for
     mangle/demangle)

   - same behavior as after the first series (i.e. sparc et.al. epoll(2)
     working correctly)"

* 'work.poll2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  annotate ep_scan_ready_list()
  ep_send_events_proc(): return result via esed->res
  preparation to switching ->poll() to returning EPOLL...
  add EPOLLNVAL, annotate EPOLL... and event_poll->event
  use linux/poll.h instead of asm/poll.h
  xen: fix poll misannotation
  smc: missing poll annotations
2018-02-11 13:57:19 -08:00