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Check for v4l2_file_operations structures that are only stored in the
fops field of video_device structures. As this field is constant, so
v4l2_file_operations structures having this property can also be
declared constant.
Done using coccinelle:
@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct v4l2_file_operations i@p = {...};
@ok1@
identifier r1.i;
position p;
struct video_device x;
@@
x.fops=&i@p;
@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
static
+const
struct v4l2_file_operations i={...};
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct v4l2_file_operations i;
File size before:
text data bss dec hex filename
5608 160 4 5772 168c
drivers/staging/most/aim-v4l2/video.o
File size after:
text data bss dec hex filename
5696 96 4 5796 16a4
drivers/staging/most/aim-v4l2/video.o
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch replaces the enum value MOST_CH_ISOC_AVP with the more
appropriate MOST_CH_ISOC.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch adds the strings 'rx', 'tx' and 'isoc' to the list of accepted
identifiers when setting up a channel configuration. To keep consistency it
removes the prefix "dir_" from strings returned by the attributes
set_direction and available_directions and it removes the suffix "_avp"
from the string "isoc_avp" returned by the attributes set_datatype and
available_datatypes.
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch removes the unnecessary spaces.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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For optimization purposes this patch removes the label err_vbi_dev.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The function aim_register_videodev() uses the variables 'ret' and
'retval' to represent the same value.
This patch removes 'retval' and replaces it with 'ret'. Further, it
replaces the constant return value '-ENODEV' with the result returned by
function video_register_device() in the event something went wrong.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch replaces pr_info, pr_err, etc. function calls by the
v4l2_... ones to get the device dependent logs.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The current V4L2 AIM implementation assigns to all video devices and to
all V4L devices the same names.
This patch makes use of hardware dependent names for the video devices and
allows the user to choose the names for the V4L devices.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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As the function get_aim_dev() does not delete elements of the list, the
use of macro list_for_each_entry_safe is not necessary.
This patch replaces the macro list_for_each_entry_safe with the macro
list_for_each_entry.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The functions get_aim_dev() and aim_rx_data() are using interrupt unsafe
spinlocks even though they may be called from an interrupt context.
This patch fixes the described problem.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch uses the preferred call to kzalloc. It replaces
kzalloc(sizeof(struct aim_fh)...) by kzalloc(sizeof(*fh)...).
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch removes redundant code.
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch removes the usage of multiple blank lines from driver modules.
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch fixes the opening and closing process of a physical channel
when used by different AIMs.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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By applying this patch the initialization of the most_aim structure is
performed at compile time.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The return type of get_aim_dev() is a pointer but we were returning 0
incase of failure.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The Makefile is including "drivers/media/video". But there is no such
directory in kernel tree. Since it is aim-v4l2 this might have been
"drivers/media/v4l2-core", but the Kconfig already mentions that it
depends on VIDEO_V4L2. So no need to mention that again in the Makefile.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch fixes double unlocking of a spinlock the aim-v4l2 module.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch adds the aim-v4l2 module of the MOST driver to the kernel's
driver staging area. This module is part of the MOST driver and handles
user space interaction by means of V4L2.
This patch is needed in order to have access to MOST isochronous AVP data
through V4L2 devices.
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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