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Since kthread_run returns -ENOMEM if failed,
it needs to be checked whether it is error, not whether it is null.
Signed-off-by: Insu Yun <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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After sub-dev registration in v4l2_async_test_notify(), the v4l2-async
core calls the registered_async callback but if a sub-dev driver does
not implement it, v4l2_subdev_call() will return a -ENOIOCTLCMD which
should not be considered an error.
Reported-by: Benoit Parrot <[email protected]>
Signed-off-by: Javier Martinez Canillas <[email protected]>
Tested-by: Benoit Parrot <[email protected]>
Acked-by: Sakari Ailus <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Currently, it is initializing the driver name using the wrong
name ("usb"). Use the generic function, as its logic works
best, and avoids repeating the very same code everywhere.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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smscore_getbuffer() calls internally wait_event(), with can sleep.
As smsusb_onresponse() is called on interrupt context, this causes
the following warning:
BUG: sleeping function called from invalid context at drivers/media/common/siano/smscoreapi.c:1653
in_atomic(): 1, irqs_disabled(): 1, pid: 11084, name: systemd-udevd
INFO: lockdep is turned off.
irq event stamp: 0
hardirqs last enabled at (0): [< (null)>] (null)
hardirqs last disabled at (0): [<ffffffff811480f7>] copy_process.part.7+0x10e7/0x56d0
softirqs last enabled at (0): [<ffffffff81148193>] copy_process.part.7+0x1183/0x56d0
softirqs last disabled at (0): [< (null)>] (null)
CPU: 2 PID: 11084 Comm: systemd-udevd Tainted: G B W 4.5.0-rc3+ #47
Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0350.2015.0812.1722 08/12/2015
0000000000000000 ffff8803c6907a80 ffffffff81933901 ffff8802bd916000
ffff8802bd9165c8 ffff8803c6907aa8 ffffffff811c6af5 ffff8802bd916000
ffffffffa0ce9b60 0000000000000675 ffff8803c6907ae8 ffffffff811c6ce5
Call Trace:
<IRQ> [<ffffffff81933901>] dump_stack+0x85/0xc4
[<ffffffff811c6af5>] ___might_sleep+0x245/0x3a0
[<ffffffff811c6ce5>] __might_sleep+0x95/0x1a0
[<ffffffffa0ce020a>] ? list_add_locked+0xca/0x140 [smsmdtv]
[<ffffffffa0ce3b8d>] smscore_getbuffer+0x7d/0x120 [smsmdtv]
[<ffffffff8123819d>] ? trace_hardirqs_off+0xd/0x10
[<ffffffffa0ce3b10>] ? smscore_sendrequest_and_wait.isra.5+0x120/0x120 [smsmdtv]
[<ffffffffa0ce020a>] ? list_add_locked+0xca/0x140 [smsmdtv]
[<ffffffffa0ce13ca>] ? smscore_putbuffer+0x3a/0x40 [smsmdtv]
[<ffffffffa0d107bc>] smsusb_submit_urb+0x2ec/0x4f0 [smsusb]
[<ffffffffa0d10e36>] smsusb_onresponse+0x476/0x720 [smsusb]
Let's add a work queue to handle the bottom half, preventing this
problem.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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As pointed by KASAN:
BUG: KASAN: slab-out-of-bounds in memcpy+0x1d/0x40 at addr ffff880000038d8c
Read of size 128 by task systemd-udevd/2536
page:ffffea0000000800 count:1 mapcount:0 mapping: (null) index:0x0 compound_mapcount: 0
flags: 0xffff8000004000(head)
page dumped because: kasan: bad access detected
CPU: 1 PID: 2536 Comm: systemd-udevd Not tainted 4.5.0-rc3+ #47
Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0350.2015.0812.1722 08/12/2015
ffff880000038d8c ffff8803b0f1f1e8 ffffffff81933901 0000000000000080
ffff8803b0f1f280 ffff8803b0f1f270 ffffffff815602c5 ffffffff8284cf93
ffffffff822ddc00 0000000000000282 0000000000000001 ffff88009c7c6000
Call Trace:
[<ffffffff81933901>] dump_stack+0x85/0xc4
[<ffffffff815602c5>] kasan_report_error+0x525/0x550
[<ffffffff815606e9>] kasan_report+0x39/0x40
[<ffffffff8155f84d>] memcpy+0x1d/0x40
[<ffffffffa120cb90>] smscore_set_device_mode+0xee0/0x2560 [smsmdtv]
Such error happens at the memcpy code below:
0x4bc0 is in smscore_set_device_mode (drivers/media/common/siano/smscoreapi.c:975).
970 sizeof(u32) + payload_size));
971
972 data_msg->mem_addr = mem_address;
973 memcpy(data_msg->payload, payload, payload_size);
974
975 rc = smscore_sendrequest_and_wait(coredev, data_msg,
976 data_msg->x_msg_header.msg_length,
977 &coredev->data_download_done);
978
979 payload += payload_size;
The problem is that the Siano driver uses a header to store the firmware,
with requires a few more bytes than allocated.
Tested with:
PCTV 77e (2013:0257)
Hauppauge WinTV MiniStick (2040:5510)
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Some macros were changed/removed at the material for v4.5. We need
to sync with those changes here, in order to avoid troubles.
* v4l_for_linus:
[media] media.h: get rid of MEDIA_ENT_F_CONN_TEST
[media] [for,v4.5] media.h: increase the spacing between function ranges
[media] media: i2c/adp1653: probe: fix erroneous return value
[media] media: davinci_vpfe: fix missing unlock on error in vpfe_prepare_pipeline()
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Defining it as a connector was a bad idea. Remove it while it is
not too late.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Defining it as a connector was a bad idea. Remove it while it is
not too late.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Each function range is quite narrow and especially for connectors this
will pose a problem. Increase the function ranges while we still can and
move the connector range to the end so that range is practically limitless.
[[email protected]: Rebased to apply at Linus tree]
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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MEDIA_ENT_F_CONN_TEST is not really a connector, it is actually
a signal generator. Also, as other drivers use the
V4L2_CID_TEST_PATTERN control for signal generators, let's change
the driver accordingly.
Tested with Terratec Grabster AV350.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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This macro is not used inside the driver. get rid of it.
Acked-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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This is not used on the driver. remove it.
Acked-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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This fixes this warning:
v4l2-mc.c: In function 'v4l2_mc_create_media_graph':
v4l2-mc.c:60:69: warning: variable 'sensor' set but not used [-Wunused-but-set-variable]
We could solve it the other way: don't do the second loop for
webcams. However, that would fail if a chip would have two sensors
plugged. This is not the current case, but it doesn't hurt to be
future-safe here, specially since this code runs only once during
device probe. So, performance is not an issue here.
Reported-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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We need to add connectors to the cx231xx graph.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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As si2157 doesn't use the subdev, but has instead a binding
logic that doesn't have any core framework, we need to manually
pass the media_device struct via platform data on every place
it is called.
This fixes support for HVR-955Q when MC is enabled.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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As this tuner doesn't use the usual subdev interface, we need
to register it manually.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Instead of having its own routine, use the one defined at the
core, as it is generic enough to handle the cx231xx usecases.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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When in analog mode, the RF connector will be created by
em28xx-video. However, when the device is in digital mode only,
the RF connector is not shown. In this case, let the DVB
core to create it for us.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Except for the usbuvc driver (with has an embedded media_device
struct on it), the other drivers have a pointer to media_device.
On those drivers, replace their own implementation for the core
one. That warrants that those subdev drivers will fill the
media_device info the same way.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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On USB drivers, the dev struct is usually filled with the USB
device. That would mean that the name of the driver specified
by media_device.dev.driver.name would be "usb", instead of the
name of the actual driver that created the media entity.
Add an optional field at the internal struct to allow drivers
to override the driver name.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The mutex lock at rc_register_device() was added by commit 08aeb7c9a42a
("[media] rc: add locking to fix register/show race").
It is meant to avoid race issues when trying to open a sysfs file while
the RC register didn't complete.
Adding a lock there causes troubles, as detected by the Kernel lock
debug instrumentation at the Kernel:
======================================================
[ INFO: possible circular locking dependency detected ]
4.5.0-rc3+ #46 Not tainted
-------------------------------------------------------
systemd-udevd/2681 is trying to acquire lock:
(s_active#171){++++.+}, at: [<ffffffff8171a115>] kernfs_remove_by_name_ns+0x45/0xa0
but task is already holding lock:
(&dev->lock){+.+.+.}, at: [<ffffffffa0724def>] rc_register_device+0xb2f/0x1450 [rc_core]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&dev->lock){+.+.+.}:
[<ffffffff8124817d>] lock_acquire+0x13d/0x320
[<ffffffff822de966>] mutex_lock_nested+0xb6/0x860
[<ffffffffa0721f2b>] show_protocols+0x3b/0x3f0 [rc_core]
[<ffffffff81cdaba5>] dev_attr_show+0x45/0xc0
[<ffffffff8171f1b3>] sysfs_kf_seq_show+0x203/0x3c0
[<ffffffff8171a6a1>] kernfs_seq_show+0x121/0x1b0
[<ffffffff81617c71>] seq_read+0x2f1/0x1160
[<ffffffff8171c911>] kernfs_fop_read+0x321/0x460
[<ffffffff815abc20>] __vfs_read+0xe0/0x3d0
[<ffffffff815ae90e>] vfs_read+0xde/0x2d0
[<ffffffff815b1d01>] SyS_read+0x111/0x230
[<ffffffff822e8636>] entry_SYSCALL_64_fastpath+0x16/0x76
-> #0 (s_active#171){++++.+}:
[<ffffffff81244f24>] __lock_acquire+0x4304/0x5990
[<ffffffff8124817d>] lock_acquire+0x13d/0x320
[<ffffffff81717d3a>] __kernfs_remove+0x58a/0x810
[<ffffffff8171a115>] kernfs_remove_by_name_ns+0x45/0xa0
[<ffffffff81721592>] remove_files.isra.0+0x72/0x190
[<ffffffff8172174b>] sysfs_remove_group+0x9b/0x150
[<ffffffff81721854>] sysfs_remove_groups+0x54/0xa0
[<ffffffff81cd97d0>] device_remove_attrs+0xb0/0x140
[<ffffffff81cdb27c>] device_del+0x38c/0x6b0
[<ffffffffa0724b8b>] rc_register_device+0x8cb/0x1450 [rc_core]
[<ffffffffa1326a7b>] dvb_usb_remote_init+0x66b/0x14d0 [dvb_usb]
[<ffffffffa1321c81>] dvb_usb_device_init+0xf21/0x1860 [dvb_usb]
[<ffffffffa13517dc>] dib0700_probe+0x14c/0x410 [dvb_usb_dib0700]
[<ffffffff81dbb1dd>] usb_probe_interface+0x45d/0x940
[<ffffffff81ce7e7a>] driver_probe_device+0x21a/0xc30
[<ffffffff81ce89b1>] __driver_attach+0x121/0x160
[<ffffffff81ce21bf>] bus_for_each_dev+0x11f/0x1a0
[<ffffffff81ce6cdd>] driver_attach+0x3d/0x50
[<ffffffff81ce5df9>] bus_add_driver+0x4c9/0x770
[<ffffffff81cea39c>] driver_register+0x18c/0x3b0
[<ffffffff81db6e98>] usb_register_driver+0x1f8/0x440
[<ffffffffa074001e>] dib0700_driver_init+0x1e/0x1000 [dvb_usb_dib0700]
[<ffffffff810021b1>] do_one_initcall+0x141/0x300
[<ffffffff8144d8eb>] do_init_module+0x1d0/0x5ad
[<ffffffff812f27b6>] load_module+0x6666/0x9ba0
[<ffffffff812f5fe8>] SyS_finit_module+0x108/0x130
[<ffffffff822e8636>] entry_SYSCALL_64_fastpath+0x16/0x76
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&dev->lock);
lock(s_active#171);
lock(&dev->lock);
lock(s_active#171);
*** DEADLOCK ***
3 locks held by systemd-udevd/2681:
#0: (&dev->mutex){......}, at: [<ffffffff81ce8933>] __driver_attach+0xa3/0x160
#1: (&dev->mutex){......}, at: [<ffffffff81ce8941>] __driver_attach+0xb1/0x160
#2: (&dev->lock){+.+.+.}, at: [<ffffffffa0724def>] rc_register_device+0xb2f/0x1450 [rc_core]
In this specific case, some error happened during device init,
causing IR to be disabled.
Let's fix it by adding a var that will tell when the device is
initialized. Any calls before that will return a -EINVAL.
That should prevent the race issues.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Instead of copying exactly the same code on all USB devices,
add an ancillary routine that will create and fill the
struct media_device with the values imported from the USB
device.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Don't let it be included twice, to avoid compiler issues.
Acked-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The tvp5150 decoder has different input connectors. The actual list of
HW inputs depends on the device version but all have at least these 3:
1) Composite0
2) Composite1
3) S-Video
and some variants have a 4th possible input connector:
4) Signal generator
The driver currently uses the .s_routing callback to switch the input
connector but since these are separate HW blocks, it's better to use
media entities to represent the input connectors and their source pads
linked with the decoder's sink pad.
This allows user-space to use the MEDIA_IOC_SETUP_LINK ioctl to choose
the input connector. For example using the media-ctl user-space tool:
$ media-ctl -r -l '"Composite0":0->"tvp5150 1-005c":0[1]'
Signed-off-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The tvp5150 decoder has different input connectors so extend the device
tree binding to allow device tree source files to define the connectors
that are available on a given board.
Signed-off-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Add a header file for the tvp5150 input connectors constants that
can be shared between the driver and Device Tree source files.
[[email protected]: rename tvp5150.h also at em28xx-cards.c]
Signed-off-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Some tvp5150 variants, have an internal generator that can generate a
black screen output. Since this is a HW block, it should be in the HW
inputs list.
Signed-off-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Not all tvp5150 variants support the same, for example some have an
internal signal generator that can output a black screen.
So the device id and rom version have to be stored in the driver's
state to know what variant is a given device.
While being there, remove some redundant comments about the device
version since there is already calls to v4l2_info() with that info.
Signed-off-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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If the parallel mbus configuration is not correct, the endpoint
device node isn't currently put again in the error path. Fix it.
Signed-off-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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V4L2 sub-devices might need to do initialization that depends on being
registered with a V4L2 device. As an example, sub-devices with Media
Controller support may need to register entities and create pad links.
Execute the registered_async callback after the sub-device has been
registered with the V4L2 device so the driver can do any needed init.
Signed-off-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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V4L2 sub-devices that are registered asynchronously have no way to know
when they have been registration with a V4L2 device but they might need
to take some action after this.
So let's add a callback that can be executed by the V4L2 async core to
allow sub-devices drivers to do any needed initialization that depends
on the registration.
Signed-off-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The module is used only as a library for now. Remove module init and exit
routines to show this.
While here, remove FSF snail address and attach EXPORT_SYMBOL() macros to
corresponding functions.
Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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v4l2_ctrl_add_ctrl() interface has no users since its introduction in
commit 0996517cf8ea ("V4L/DVB: v4l2: Add new control handling framework")
and its functionality is covered by v4l2_ctrl_new() and derivative
interfaces, so it is safe to remove the interface from the kernel.
Signed-off-by: Vladimir Zapolskiy <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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This transmitter now supports configuring the IT content type of the incoming
video.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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This receiver now supports reading the IT content type of the incoming
video.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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This receiver now supports reading the IT content type of the incoming
video.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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controls
Document these new controls.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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HDMI and DisplayPort both support IT Content Type information that
tells the receiver what type of material the video is, graphics such
as from a PC desktop, Photo, Cinema or Game (low-latency).
This patch adds controls for receivers and transmitters to get/set
this information.
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Use the helper to enumerate and set DV timings instead of a custom code.
This will ease debugging too, as it is consistent with other drivers.
Signed-off-by: Jean-Michel Hautbois <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Remove an unnecassary cast in the argument to kfree.
Found using Coccinelle. The semantic patch used to find this is as follows:
//<smpl>
@@
type T;
expression *f;
@@
- kfree((T *)(f));
+ kfree(f);
//</smpl>
Signed-off-by: Amitoj Kaur Chawla <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Auto-gain and auto-exposure clusters in the ov9650 driver have both a
size of 2, not 3 controls. Fix this.
Signed-off-by: Guennadi Liakhovetski <[email protected]>
Reviewed-by: Laurent Pinchart <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The adp1653_probe() function may return positive value EINVAL
which is obviously wrong.
Signed-off-by: Anton Protopopov <[email protected]>
Signed-off-by: Sakari Ailus <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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vpfe_prepare_pipeline()
Add the missing unlock before return from function
vpfe_prepare_pipeline() in the error handling case.
video->lock is lock/unlock in function vpfe_open(),
and no need to unlock it here, so remove unlock
video->lock.
Signed-off-by: Wei Yongjun <[email protected]>
Signed-off-by: Sakari Ailus <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Instead of having lots of #ifdefs inside au0828-core due to
V4L2, move the dependencies to au0828-video.c. That allows
removing all those ifdefs, as au0828-video is only compiled if
CONFIG_VIDEO_AU0828_V4L2.
This fixes the following warnings reported by Kbuild test
with a random config with au0828 enabled, but V4L2 is disabled.
All warnings (new ones prefixed by >>):
drivers/media/usb/au0828/au0828-core.c: In function 'au0828_usb_probe':
>> drivers/media/usb/au0828/au0828-core.c:463:1: warning: label 'done' defined but not used [-Wunused-label]
done:
^
drivers/media/usb/au0828/au0828-core.c: At top level:
drivers/media/usb/au0828/au0828-core.c:250:12: warning: 'au0828_create_media_graph' defined but not used [-Wunused-function]
static int au0828_create_media_graph(struct au0828_dev *dev)
^
Tested with a WinTV HVR 950Q (USB ID: 2040:7200)
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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It doesn't make sense to try to create the analog TV graph,
if the device fails to register at V4L2, or if it doesn't have
V4L2 support.
Thanks to Shuah for pointing this issue.
Reported-by: Shuah Khan <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Register saa7134 at the media controller core and provide
support for both analog TV and DVB.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Instead of copyping the same code on all PCI devices that
would have a media controller, add a core ancillary routine.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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The saa7134_input.tv field was used to indicate if an input had
a RF signal for TV input. This is not needed anymore, as the input
type can be checked directly by the driver.
Also, due to a past bug when setting the TV standard at the
demod, all inputs should have this field set, with is wrong.
This reduces the size of the saa7134_boards by about 8KB,
on i386 (and probably twice on 64 bits), with is a nice
colateral effect:
text data bss dec hex filename
241047 136831 66356 444234 6c74a drivers/media/pci/saa7134/saa7134.o.old
240851 128895 66292 436038 6a746 drivers/media/pci/saa7134/saa7134.o
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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It doesn't make any sense to only update the TV standard for TV,
as composite and S-Video inputs also need it.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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Currently, the saa7134 driver is hardcoding input names on each
board entry. More modern drivers define, instead, an enum for each
input type.
While the current logic works, it adds extra complexity at the driver,
as it needs to discover the type of the input using some euristics.
Instead, let's standardize the input types and use a type, instead of
a name on all places.
That will allow further patches to properly report the input type
via VIDIOC_G_INPUT and to remove an extra field from the struct to
identify if the input is for TV.
Please notice that several boards define an input for receiving composite
signals via a S-Video connector. The name of such input was inconsistent,
so this patch cleans it and make it to be properly reported the
same way for all boards.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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