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This patch adds support for a drm overlay plane on DI0 using the DP.
In principle, the overlay plane could also be used on DI1, but to switch
the overlay plane between display interfaces, the base planes would have
to be exchanged transparently while both display interfaces are inactive.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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During a device close the drm core frees all pending events in
drm_events_release(). If at that time a pageflip is pending the
interrupt handler will try to complete the now unitialized
event resulting in a NULL pointer exception. Seen on imx-drm
when userspace is killed during a page flip.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Currently we wait for a channel until it's idle before actually
disabling it. This is not needed for all channels though, so make
waiting for idle a separate function and call it where necessary.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The drm fourccs define formats not available as video4linux pixel formats,
such as DRM_FORMAT_BGR565, or the DRM_FORMAT_RGBX/BGRX variants.
Also, contrary to the v4l2 formats, the drm formats are well defined.
This patch also fixes the BGRA32 and RGB/RGB24 internal formats to use a
common internal representation.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Connecting a 320x240 parallel display on i.MX6 resulted in an invalid DRDY
signal because the DC would not receive NL/EOL events on every line.
Reducing the allocated DMFC space from 4 slots (256 * 128-bit) to 2 slots
(128 * 128-bit) solved the problem.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Booting a mx6 with CONFIG_PROVE_LOCKING we get:
======================================================
[ INFO: possible circular locking dependency detected ]
3.12.0-rc4-next-20131009+ #34 Not tainted
-------------------------------------------------------
swapper/0/1 is trying to acquire lock:
(&imx_drm_device->mutex){+.+.+.}, at: [<804575a8>] imx_drm_encoder_get_mux_id+0x28/0x98
but task is already holding lock:
(&crtc->mutex){+.+...}, at: [<802fe778>] drm_modeset_lock_all+0x40/0x54
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&crtc->mutex){+.+...}:
[<800777d0>] __lock_acquire+0x18d4/0x1c24
[<80077fec>] lock_acquire+0x68/0x7c
[<805ead5c>] _mutex_lock_nest_lock+0x58/0x3a8
[<802fec50>] drm_crtc_init+0x48/0xa8
[<80457c88>] imx_drm_add_crtc+0xd4/0x144
[<8045e2e8>] ipu_drm_probe+0x114/0x1fc
[<80312278>] platform_drv_probe+0x20/0x50
[<80310c68>] driver_probe_device+0x110/0x22c
[<80310e20>] __driver_attach+0x9c/0xa0
[<8030f218>] bus_for_each_dev+0x5c/0x90
[<80310750>] driver_attach+0x20/0x28
[<8031034c>] bus_add_driver+0xdc/0x1dc
[<803114d8>] driver_register+0x80/0xfc
[<80312198>] __platform_driver_register+0x50/0x64
[<808172fc>] ipu_drm_driver_init+0x18/0x20
[<800088c0>] do_one_initcall+0xfc/0x160
[<807e7c5c>] kernel_init_freeable+0x104/0x1d4
[<805e2930>] kernel_init+0x10/0xec
[<8000ea68>] ret_from_fork+0x14/0x2c
-> #1 (&dev->mode_config.mutex){+.+.+.}:
[<800777d0>] __lock_acquire+0x18d4/0x1c24
[<80077fec>] lock_acquire+0x68/0x7c
[<805eb100>] mutex_lock_nested+0x54/0x3a4
[<802fe758>] drm_modeset_lock_all+0x20/0x54
[<802fead4>] drm_encoder_init+0x20/0x7c
[<80457ae4>] imx_drm_add_encoder+0x88/0xec
[<80459838>] imx_ldb_probe+0x344/0x4fc
[<80312278>] platform_drv_probe+0x20/0x50
[<80310c68>] driver_probe_device+0x110/0x22c
[<80310e20>] __driver_attach+0x9c/0xa0
[<8030f218>] bus_for_each_dev+0x5c/0x90
[<80310750>] driver_attach+0x20/0x28
[<8031034c>] bus_add_driver+0xdc/0x1dc
[<803114d8>] driver_register+0x80/0xfc
[<80312198>] __platform_driver_register+0x50/0x64
[<8081722c>] imx_ldb_driver_init+0x18/0x20
[<800088c0>] do_one_initcall+0xfc/0x160
[<807e7c5c>] kernel_init_freeable+0x104/0x1d4
[<805e2930>] kernel_init+0x10/0xec
[<8000ea68>] ret_from_fork+0x14/0x2c
-> #0 (&imx_drm_device->mutex){+.+.+.}:
[<805e510c>] print_circular_bug+0x74/0x2e0
[<80077ad0>] __lock_acquire+0x1bd4/0x1c24
[<80077fec>] lock_acquire+0x68/0x7c
[<805eb100>] mutex_lock_nested+0x54/0x3a4
[<804575a8>] imx_drm_encoder_get_mux_id+0x28/0x98
[<80459a98>] imx_ldb_encoder_prepare+0x34/0x114
[<802ef724>] drm_crtc_helper_set_mode+0x1f0/0x4c0
[<802f0344>] drm_crtc_helper_set_config+0x828/0x99c
[<802ff270>] drm_mode_set_config_internal+0x5c/0xdc
[<802eebe0>] drm_fb_helper_set_par+0x50/0xb4
[<802af580>] fbcon_init+0x490/0x500
[<802dd104>] visual_init+0xa8/0xf8
[<802df414>] do_bind_con_driver+0x140/0x37c
[<802df764>] do_take_over_console+0x114/0x1c4
[<802af65c>] do_fbcon_takeover+0x6c/0xd4
[<802b2b30>] fbcon_event_notify+0x7c8/0x818
[<80049954>] notifier_call_chain+0x4c/0x8c
[<80049cd8>] __blocking_notifier_call_chain+0x50/0x68
[<80049d10>] blocking_notifier_call_chain+0x20/0x28
[<802a75f0>] fb_notifier_call_chain+0x1c/0x24
[<802a9224>] register_framebuffer+0x188/0x268
[<802ee994>] drm_fb_helper_initial_config+0x2bc/0x4b8
[<802f118c>] drm_fbdev_cma_init+0x7c/0xec
[<80817288>] imx_fb_helper_init+0x54/0x90
[<800088c0>] do_one_initcall+0xfc/0x160
[<807e7c5c>] kernel_init_freeable+0x104/0x1d4
[<805e2930>] kernel_init+0x10/0xec
[<8000ea68>] ret_from_fork+0x14/0x2c
other info that might help us debug this:
Chain exists of:
&imx_drm_device->mutex --> &dev->mode_config.mutex --> &crtc->mutex
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&crtc->mutex);
lock(&dev->mode_config.mutex);
lock(&crtc->mutex);
lock(&imx_drm_device->mutex);
*** DEADLOCK ***
6 locks held by swapper/0/1:
#0: (registration_lock){+.+.+.}, at: [<802a90bc>] register_framebuffer+0x20/0x268
#1: (&fb_info->lock){+.+.+.}, at: [<802a7a90>] lock_fb_info+0x20/0x44
#2: (console_lock){+.+.+.}, at: [<802a9218>] register_framebuffer+0x17c/0x268
#3: ((fb_notifier_list).rwsem){.+.+.+}, at: [<80049cbc>] __blocking_notifier_call_chain+0x34/0x68
#4: (&dev->mode_config.mutex){+.+.+.}, at: [<802fe758>] drm_modeset_lock_all+0x20/0x54
#5: (&crtc->mutex){+.+...}, at: [<802fe778>] drm_modeset_lock_all+0x40/0x54
In order to avoid this lockdep warning, remove the locking from
imx_drm_encoder_get_mux_id() and imx_drm_crtc_panel_format_pins().
Tested on a mx6sabrelite and mx53qsb.
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There is no need remove and add the control urb in device open/close.
Move to the probe and disconnect. This make the USB control in/out
functions always available to driver.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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module_spi_driver removes the boilerplate code and simplifies it.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Henry Pan <hspan@micron.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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module_platform_driver simplifies the code by removing the boilerplate.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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init_usb() may fail after some of mux_rxes already allocated.
So we need to release them on the failure path.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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As far as alloc_mux_rx() is called from probe() only
there is no need in GFP_ATOMIC here.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch adds a MMU dependency to configure the ZSMALLOC in
drivers/staging/zsmalloc/Kconfig. Without this patch, build
system can lead to build failure. This was observed during
randconfig testing, in which ZSMALLOC was enabled w/o MMU being
enabled. Following was the error:
LD vmlinux
drivers/built-in.o: In function `__zs_map_object':
drivers/staging/zsmalloc/zsmalloc-main.c:650: undefined reference to `map_vm_area'
make: *** [vmlinux] Error 1
Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Seth Jennings <sjenning@linux.vnet.ibm.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: devel@driverdev.osuosl.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix checkpatch.pl issues with line over 80 characters
in sm7xxfb.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix checkpatch.pl issues with line over 80
characters in ethernet-tx.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix checkpatch.pl issues with quoted string split
across lines in ethernet-tx.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix checkpatch.pl issues with quoted string split
across lines in ethernet-spi.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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r8185b_init.c
Fix checkpatch.pl issues with suspect code indent for
conditional statements in r8185b_init.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix checkpatch.pl issues with avoid unnecessary line
continuations in r8185b_init.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This fixes the following sparse warnings:
* drivers/staging/rtl8188eu/core/rtw_cmd.c:221:5: warning:
symbol 'rtw_cmd_filter' was not declared. Should it be static?
* drivers/staging/rtl8188eu/core/rtw_cmd.c:1670:6: warning:
symbol 'dynamic_chk_wk_hdl' was not declared. Should it be static?
Signed-off-by: Valentina Manea <valentina.manea.m@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix checkpatch.pl warning on quoted string on multiple lines in
go7007-usb.c
Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix "line over 80 characters" warning generated by checkpatch.pl for
go7007-usb.c
Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Replace KERN_INFO with pr_info in go7007-usb.c
Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Replace KERN_ERR with pr_err in go7007-usb.c
Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Remove driver-specific debugging defines in favor of pr_debug in
go7007-usb.c
Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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in lo.c
fix checkpatch.pl issues with return is not a function,
parentheses are not required in lo.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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parenthesis '(' in lo.c
Fix checkpatch.pl issues with space prohibited between
function name and open parenthesis '(' in lo.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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parenthesis '(' in module.c
Fix checkpatch.pl issues with space prohibited between
function name and open parenthesis '(' in module.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix checkpatch.pl issues with do not initialise statics to 0 or NULL in module.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix checkpatch.pl issues with quoted string split across lines in lirc_imon.c
Signed-off-by: Archana kumari <archanakumari959@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix sparse warnings for static functions
* drivers/staging/wlan-ng/cfg80211.c:101:5: warning:
symbol 'prism2_change_virtual_intf' was not declared.
Signed-off-by: Teodora Baluta <teobaluta@gmail.com>
Signed-off-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix checkpatch.pl issues with prefer netdev_dbg(netdev, .. then
dev_dbg(dev, .. then pr_debug(.. to printk(KERN_DEBUG in p80211wep.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix checkpatch.pl issues with sizeof *ring should be sizeof(*ring)
in sca3000_ring.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch fixes the following checkpatch.pl warning in btmtk_usb.c:
WARNING: line over 80 characters in the file
by using kernel built_in min_t macro.
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The patch fixes the following checkpatch.pl warning in btmtk_usb.c
WARNING: suspect code indent for conditional statements
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The patch fixes the following checkpatch.pl warning in btmtk_usb.c
WARNING: unnecessary whitespace before a quoted newline
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The patch fixes the following checkpatch.pl warning in btmtk_usb.c
WARNING: braces {} are not necessary for single statement blocks
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Zach Brown <zab@redhat.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch fixes the following checkpatch.pl warning in btmtk_usb.c
WARNING: line over 80 characters in the file
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fixes whitepace around commas. Detected via checkpatch.pl.
ERROR: space required after that ','
Signed-off-by: Archana kumari <archanakumari959@gmail.com>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix checkpatch.pl issues wtih line over 80 characters
in gdm_tty.c
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This fixes sparse warnings for functions and variables, e.g.:
* drivers/staging/gdm724x/gdm_mux.c:29:25: warning: symbol
'mux_rx_wq' was not declared. Should it be static?
Signed-off-by: Valentina Manea <valentina.manea.m@gmail.com>
Reviewed-by: Zach Brown <zab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch introduces ktap to staging tree.
ktap is a new script-based dynamic tracing tool for Linux,
it uses a scripting language and lets users trace the
Linux kernel dynamically. ktap is designed to give
operational insights with interoperability that allow
users to tune, troubleshoot and extend kernel and application.
It's similar with Linux Systemtap and Solaris Dtrace.
ktap have different design principles from Linux mainstream
dynamic tracing language in that it's based on bytecode,
so it doesn't depend upon GCC, doesn't require compiling
kernel module for each script, safe to use in production
environment, fulfilling the embedded ecosystem's tracing needs.
See ktap tutorial for more information:
http://www.ktap.org/doc/tutorial.html
The merit of putting this software in staging tree is
to make it more possible to get feedback from users
and thus polish the code.
Signed-off-by: Jovi Zhangwei <jovi.zhangwei@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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`comedi_alloc_spriv()` allocates private storage for a comedi subdevice
and sets the `SRF_FREE_SPRIV` flag in the `runflags` member of the
subdevice to allow the private storage to be automatically freed when
the comedi device is being cleaned up. Unfortunately, the flag gets
clobbered by `do_cmd_ioctl()` which calls
`comedi_set_subdevice_runflags()` with a mask value `~0` and only the
`SRF_USER` and `SRF_RUNNING` flags set, all the other SRF flags being
cleared.
Change the calls to `comedi_set_subdevice_runflags()` that currently use
a mask value of `~0` to use a more relevant mask value. For
`do_cmd_ioctl()`, the relevant SRF flags are `SRF_USER`, `SRF_ERROR` and
`SRF_RUNNING`. (At one time, `SRF_RT` would be included in that set of
flags, but it is no longer used.) For `comedi_alloc_spriv()` replace
the call to `comedi_set_subdevice_runflags()` with a simple
OR-assignment to avoid unnecessary use of a spin-lock.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Cc: <stable@vger.kernel.org> # 3.11.y
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Remove white space and commented out code.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The `settling_time_0` member of `struct comedi_subdevice` can be set by
a low-level comedi driver and will be copied to user-space as part of
the information provided by the `COMEDI_SUBDINFO` ioctl. No comedi
driver has ever set it; it's just been left at its initial value of 0.
Remove it to save a bit of space, and behave as though it is 0.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The `flags` and `flaglist` members of `struct comedi_subdevice` were
defined to supply "all-channel" flags via the `COMEDI_SUBDINFO` ioctl,
or "channel-specific" flags via the `COMEDI_CHANINFO` ioctls,
respectively. However, no comedi driver has ever set them.
It's not entirely clear how "all-channel" flags would differ from the
"subdevice" flags passed by `COMEDI_SUBDINFO`. It is conceivable that
"channel-specific" flags could be used to describe different analog
reference values (or whatever) supported by different channels.
Presumably these would use some sub-set of the `SDF_xxx` subdevice flag
values, or possibly the `CR_xxx` flag values that get packed into a
"chanspec" value (along with a channel number and range code). The
original intentions are lost in the mists of time.
For now, just remove the `flags` and `flaglist` members from `struct
comedi_subdevice` and behave as though they have been left at their
default values (0 or NULL) by the low-level comedi driver.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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