Remove the V4L1 API from this driver, making it fully V4L2.
Also fix a bug where the /dev/videoX device was created too early, which led
to initialization problems of the camera, making it unable to capture video.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The illuminator controls should only be available to the user for the Intel
Play QX3 microscope. The implementation to inhibit the controls is intended to
be consistent with the other gspca driver implementations.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Turn the lights of the QX3 on (or off) as needed when resuming and at module load.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch adds basic V4L2 controls for the illuminators on the Intel
Play QX3 microscope.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Some media devices (microscopes) may have one or many illuminators.
This patch makes them controlable by the applications.
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Acked-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
When compressed, the images take less than one byte per pixel.
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Remove HID and polling via firmware API. Implement direct access to remote codes via memory read and write.
HID and polling via firmware api never worked 100% well and there was also some limitations which tied used remote and device together.
After that it is possible to use upcoming kernel remote controller core.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Detect TerraTec Cinergy T Stick Dual RC remote config using device
USB ID instead of device EEPROM hash. It was found that there is
devices with slightly different EEPROM content...
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add USB ID [0ccd:0099] for TerraTec Cinergy T Stick Dual RC.
Device is based for AF9015 + AF9013 + 2 x MxL5007T chips.
Thanks to the TerraTec!
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Commit 490ade7e3f4474f626a8f5d778ead4e599b94fbc merge conflict fix
leads situation where last nine device definitions were overridden mistakenly.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Remove the vtx (aka videotext aka teletext) API from the v4l2 core.
This API was scheduled for removal in kernel 2.6.35.
The vtx device nodes have been superseded by vbi device nodes
for many years. No applications exist that use the vtx support.
Of the two i2c drivers that actually support this API the saa5249
has been impossible to use for a year now and no known hardware
that supports this device exists. The saa5246a is theoretically
supported by the old mxb boards, but it never actually worked.
In summary: there is no hardware that can use this API and there
are no applications actually implementing this API.
The vtx support still reserves minors 192-223 and we would really
like to reuse those for upcoming new functionality. In the unlikely
event that new hardware appears that wants to use the functionality
provided by the vtx API, then that functionality should be build
around the sliced VBI API instead.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
These old i2c teletext drivers are not supported by any hardware and cannot be
tested anymore.
Note that while the mxb board seemingly used the saa5246a driver, in reality
this teletext driver never worked.
These drivers are removed as part of the vtx feature removal, originally
scheduled for 2.6.35.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
bit 3(LK) indicates that the Vstatus is locked.
Currently using bit 7(CF) which is usually present, results in early
aborted search in FEC_AUTO and missing channels.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
WARNING: please, no space before tabs
+ * ^IPOR = Power on Reset (VCC H=<2.2v L=>2.2v)$
WARNING: unnecessary whitespace before a quoted newline
+ deb_info("Frq=%d x=%d N=%d A=%d \n", frequency, x, N, A);
WARNING: please, no space before tabs
+^Ielse ^I^I/*frequency up to 2150000*/$
WARNING: unnecessary whitespace before a quoted newline
+ deb_info("Data 0=[%x%x%x%x] \n", data[0], data[1], data[2], data[3]);
WARNING: unnecessary whitespace before a quoted newline
+ deb_info("Data 2=[%x%x] \n", data[2], data[3]);
Cc: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Tuner used in Sharp BS2F7VZ7395 dvbs module.
When ix2505v tuner is attached to stv0288 form this module.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The same expression is tested twice and the result is the same each time.
The sematic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@expression@
expression E;
@@
(
* E
|| ... || E
|
* E
&& ... && E
)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
If the NULL test is necessary, the initialization involving a dereference of
the tested value should be moved after the NULL test.
The sematic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
type T;
expression E;
identifier i,fld;
statement S;
@@
- T i = E->fld;
+ T i;
... when != E
when != i
if (E == NULL) S
+ i = E->fld;
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Adding the USB ID for my TerraTec Electronic GmbH Cinergy T RC MKII
[0ccd:0097] and hooking it up into af9015, on top of your new NXP TDA18218
patches, makes it work for me.
Just the shipped IR remote control doesn't seem to create keycode events
yet (tested with different remote=%d parameters), are there any hints to
add support for that?
[ 2.250022] usb 1-10: new high speed USB device using ehci_hcd and address 5
[ 2.369287] usb 1-10: New USB device found, idVendor=0ccd, idProduct=0097
[ 2.369290] usb 1-10: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2.369293] usb 1-10: Product: USB2.0 DVB-T TV Stick
[ 2.369294] usb 1-10: Manufacturer: NEWMI
[ 2.369296] usb 1-10: SerialNumber: 010101010600001
[ 2.534023] usbcore: registered new interface driver hiddev
[ 2.537235] input: NEWMI USB2.0 DVB-T TV Stick as /devices/pci0000:00/0000:00:02.1/usb1/1-10/1-10:1.1/input/input0
[ 2.537323] generic-usb 0003:0CCD:0097.0001: input,hidraw0: USB HID v1.01 Keyboard [NEWMI USB2.0 DVB-T TV Stick] on usb-0000:00:02.1-10/input1
[ 2.537349] usbcore: registered new interface driver usbhid
[ 2.537351] usbhid: USB HID core driver
[ 3.263177] generic-usb 0003:04D9:1603.0002: input,hidraw1: USB HID v1.10 Keyboard [ USB Keyboard] on usb-0000:00:02.0-8.1/input0
[ 3.286946] generic-usb 0003:04D9:1603.0003: input,hidraw2: USB HID v1.10 Device [ USB Keyboard] on usb-0000:00:02.0-8.1/input1
[ 3.467136] generic-usb 0003:046D:C050.0004: input,hidraw3: USB HID v1.10 Mouse [Logitech USB-PS/2 Optical Mouse] on usb-0000:00:02.0-8.2/input0
[ 3.660890] generic-usb 0003:10D5:000D.0005: input,hidraw4: USB HID v1.10 Keyboard [No brand SP02-A1] on usb-0000:00:02.0-8.3/input0
[ 5.567632] dvb-usb: found a 'TerraTec Cinergy T Stick RC' in cold state, will try to load a firmware
[ 5.693497] dvb-usb: downloading firmware from file 'dvb-usb-af9015.fw'
[ 5.773109] dvb-usb: found a 'TerraTec Cinergy T Stick RC' in warm state.
[ 5.773168] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
[ 5.774290] DVB: registering new adapter (TerraTec Cinergy T Stick RC)
[ 6.007696] af9013: firmware version:5.1.0
[ 6.010843] DVB: registering adapter 0 frontend 0 (Afatech AF9013 DVB-T)...
[ 6.032697] tda18218: NXP TDA18218HN successfully identified.
[ 6.034442] dvb-usb: TerraTec Cinergy T Stick RC successfully initialized and connected.
[ 6.040612] usbcore: registered new interface driver dvb_usb_af9015
[mchehab@redhat.com: Fix merge conflict with another board addition]
Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Acked-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Making static data const avoids allocation of additional r/w memory and
reduces initialisation time. It also provides some additional opportunities
for compiler optimisations.
Signed-off-by: Lawrence Rust <lvr@softsystem.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/video/cx88/cx88-dsp.c: In function ‘detect_a2_a2m_eiaj’:
drivers/media/video/cx88/cx88-dsp.c:158: warning: ‘carrier_freq’ may be used uninitialized in this function
drivers/media/video/cx88/cx88-dsp.c:158: warning: ‘stereo_freq’ may be used uninitialized in this function
drivers/media/video/cx88/cx88-dsp.c:158: warning: ‘dual_freq’ may be used uninitialized in this function
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Replace direct access to the v4l2_subdev priv field with the inline
v4l2_get_subdevdata method.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Using an enum and removing the default case from switch statements accessing
the value enables the compiler to emit a warning (enabled with -Wall) when an
audio mode is not handled.
This highlights an omission in the function cx88_dsp_detect_stereo_sap()
(in cx88-dsp.c) not handling WW_EIAJ and WW_M.
Signed-off-by: Lawrence Rust <lawrence@softsystem.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Error codes are stored in rc, but the return value is always 0. Return rc
instead.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r@
local idexpression x;
constant C;
@@
if (...) { ...
x = -C
... when != x
(
return <+...x...+>;
|
return NULL;
|
return;
|
* return ...;
)
}
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
In each case, error codes are stored in rc, but the return value is always
0. Return rc instead.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r@
local idexpression x;
constant C;
@@
if (...) { ...
x = -C
... when != x
(
return <+...x...+>;
|
return NULL;
|
return;
|
* return ...;
)
}
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Error codes are stored in res, but the return value is always 0. Return
res instead.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r@
local idexpression x;
constant C;
@@
if (...) { ...
x = -C
... when != x
(
return <+...x...+>;
|
return NULL;
|
return;
|
* return ...;
)
}
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
In cx23885/cx23885-video.c, cx88/cx88-video.c, davinci/vpif_capture.c, and
davinci/vpif_display.c, group the aligned code into a single if branch.
In saa7134/saa7134-video.c, outdent the code following the if.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r disable braces4@
position p1,p2;
statement S1,S2;
@@
(
if (...) { ... }
|
if (...) S1@p1 S2@p2
)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
if (p1[0].column == p2[0].column):
cocci.print_main("branch",p1)
cocci.print_secs("after",p2)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
"sd" and "err" are too common names to be used in macros for local variables.
Prefix them with an underscore to avoid name clashing.
[mchehab@redhat.com: whitespace cleanups]
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch makes in-kernel decoding with the stock Streamzap PC Remote
work out of the box. There are quite a few things going on in this
patch, all related to getting this working:
1) I had to enable reporting of a long space at the end of each signal,
or I had weird buffering and keybounce issues.
2) The keymap has been reworked slightly to match actual decoded values,
the first edition was missing the pre-data bits present in the lirc
config file for this remote.
3) There's a whole new decoder included, specifically for the
not-quite-RC5 15-bit protocol variant used by the Streamzap PC
Remote. The decoder, while usable with other recievers (tested with
an mceusb receiver), will only be loaded by the streamzap driver, as
its likely not of use in almost all other situations. This can be
revisited if/when all keytable loading (and disabling of unneeded
protocol decoder engines) is moved to userspace, but for now, I think
this makes the most sense.
Note that I did try to enable handling the streamzap RC5-ish protocol in
the current RC5 decoder, but there's no particularly easy way to tell if
its 14-bit RC5 or 15-bit Streamzap until we see bit 14, and even then,
in testing an attempted decoder merge, only 2/3 of the keys were
properly recognized as being the 15-bit variant and decoded correctly,
the rest were close enough to compliant with 14-bit that they were
decoded as such (but they have overlap with one another, and thus we
can't just shrug and use the 14-bit decoded values).
Also of note in this patch is the removal of the streamzap driver's
internal delay buffer. Per discussion w/Christoph, it shouldn't be
needed by lirc any longer anyway, and it doesn't seem to make any
difference to the in-kernel decoder engine. That being the case, I'm
yanking it all out, as it greatly simplifies the driver code.
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/video/gspca/konica.c: In function ‘sd_start’:
drivers/media/video/gspca/konica.c:322: error: implicit declaration of function ‘usb_buffer_alloc’
drivers/media/video/gspca/konica.c:325: warning: assignment makes pointer from integer without a cast
make[3]: ** [drivers/media/video/gspca/konica.o] Erro 1
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
gspca_xirlink_cit: adjust ibm netcam pro framerate for available bandwidth
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This new driver replaces the (known to not work / crash) usbvideo konicawc
driver.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
gspca_*: correct typo in my email address in various subdrivers
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Mark usbvideo ibmcam driver as deprecated, it is replaced by the new
gscpa xirlink_cit driver.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Some xirlink_cit models have only 1 alt setting, but the actual used
bandwidth can be programmed through a register use this to allow streaming
while other isoc streams (for example sound) are active at the same time.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
gspca_xirlink_cit: Use alt setting -> fps formula for model 1 cams too
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add support for camera with a bcd version of 0.01, I've dupped these
Model0 cams.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Note this is untested as I don't have hardware to test, but all
initsequences were taken over 1 on 1 from the old ibmcam driver so things
should work.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The old usbvideo ibmcam driver needs to be replaced with a v4l2 driver
preferably using the gspca webcam framework rather then the old usbvideo
framework.
This new gspca sub driver sets a first step in that direction. The ibmcam
driver supports 4 different model webcams. This new driver (for now) only
supports Model 3 cameras, as my test cam is a Model 3 cam, or so I thought.
Upon reading:
http://www.linux-usb.org/ibmcam/
I learned that the IBM Netcamera Pro I have even though having the same
usb id and the same bcd version is different from the Model 3 cameras
supported by the ibmcam driver. So this new gscpa subdriver supports Model 3
cameras (untested), and the IBM Netcamera Pro. Currently use with the
IBM Netcamera Pro requires a module parameter. I hope to be able to
autodetect which is which in the future.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The compat code for the VIDIOCSMICROCODE ioctl is totally buggered.
It's only used by the VIDEO_STRADIS driver, and that one is scheduled to
staging and eventually removed unless somebody steps up to maintain it
(at which point it should use request_firmware() rather than some magic
ioctl). So we'll get rid of it eventually.
But in the meantime, the compatibility ioctl code is broken, and this
tries to get it to at least limp along (even if Mauro suggested just
deleting it entirely, which may be the right thing to do - I don't think
the compatibility translation code has ever worked unless you were very
lucky).
Reported-by: Kees Cook <kees.cook@canonical.com>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In case of error during probe() the driver calls free_irq() function
on not yet allocated irq. This patches fixes the call sequence in case of
the error.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
When a driver that uses videobuf-dma-contig is used with the USERPTR
memory access method a kernel oops might happen: a NULL address may be
passed to dma_free_coherent(). This happens when an application calls
REQBUFS and then exits without queuing any buffers. This patch fixes
that bug.
Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
For some cards, ir_dev->props and ir_dev->raw are both NULL. These cards are
using built-in IR decoding instead of raw, and can't easily be made to switch
protocols.
So upon reading /sys/class/rc/rc?/protocols on such a card, return 'builtin' as
the supported and enabled protocol. Return -EINVAL on any attempts to change
the protocol. And most important of all, don't crash.
Signed-off-by: Brian Rogers <brian@xyzw.org>
Acked-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fix DMA engine pixel offset calculation for 3-planar YUV formats.
On S5PV210 SoCs horizontal offset is applied as number of pixels,
not bytes per line.
[mchehab@redhat.com: CodingStyle cleanup]
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
At all frame rates except 30fps and 5fps the camera produces very dark
pictures. Auto-exposure is probably disabled by the camera at all frame
rates except 30fps, making them pretty unusable.
Work around the problem by introducing a new RESTRICT_FRAME_RATE quirk
that disables all the frame rates except the default one.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The camera requires the STREAM_NO_FID quirk. Add a corresponding entry
in the device IDs list.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The FBIOGET_VBLANK device ioctl allows unprivileged users to read 16
bytes of uninitialized stack memory, because the "reserved" member of
the fb_vblank struct declared on the stack is not altered or zeroed
before being copied back to the user. This patch takes care of it.
Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The wrong value for the volume control limit, 65335 vs. 65535,
prevents proper cx25840 v4l2_subdevice initialization.
Reported-by: Igor M. liplianin <liplianin@me.by>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Video device was not being released on driver remove.
Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Output buffer has to be at least the size of input buffer, not the other
way around.
Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The drivers/media/video/mt9v022.c file, on line 405, tries a "case 0" o a
v4l2_mbus_pixelcode enum which don't have an 0 value element, so I got a compile
warning. That "case" is useless so it can be removed.
Signed-off-by: Ionut Gabriel Popescu <poyo_vl@yahoo.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The mx25_camera_irq irq handler may get called after the camera has been
deactivated (from mx2_camera_deactivate). Detect this situation, and bail out.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
As the end of frame marker does not contain any pixel, it must not be
transferred.
Reported-by: Ivo Jager <ivo.jager@siliconfields.net>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This fixes a nasty memory corruption bug when using userptr I/O.
The function videobuf_pages_to_sg() sets up the scatter-gather list for the
DMA transfer to the userspace pages. The first transfer is setup correctly
(the size is set to PAGE_SIZE - offset), but all other transfers have size
PAGE_SIZE. This is wrong for the last transfer which may be less than PAGE_SIZE.
Most, if not all, drivers will program the boards DMA engine correctly, i.e.
even though the size in the last sg element is wrong, they will do their
own size calculations and make sure the right amount is DMA-ed, and so seemingly
prevent memory corruption.
However, behind the scenes the dynamic DMA mapping support (in lib/swiotlb.c)
may create bounce buffers if the memory pages are not in DMA-able memory.
This happens for example on a 64-bit linux with a board that only supports
32-bit DMA.
These bounce buffers DO use the information in the sg list to determine the
size. So while the DMA engine transfers the correct amount of data, when the
data is 'bounced' back too much is copied, causing buffer overwrites.
The fix is simple: calculate and set the correct size for the last sg list
element.
Signed-off-by: Hans Verkuil <hans.verkuil@tandberg.com>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Drivers shouldn't sleep while holding a spinlock. A previous workaround
were to release the spinlock before callinc schedule().
This patch uses a different approach: it just waits for the
siano hardware to answer.
Signed-off-by: Richard Zidlicky <rz@linux-m68k.org>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
