tveeprom_hauppauge_analog() used to need the I2C adapter in
order to print debug messages. As it now uses pr_foo() facilities
since commit 6037b3ca28 ("[media] tveeprom: print log messages
using pr_foo()"), the first argument of the function is not
needed anymore.
So, get rid of it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
mxl111sf uses a lot of kernel stack memory as it puts an i2c_client
structure on the stack:
drivers/media/usb/dvb-usb-v2/mxl111sf.c: In function 'mxl111sf_init':
drivers/media/usb/dvb-usb-v2/mxl111sf.c:953:1: error: the frame size of 1248 bytes is larger than 1152 bytes [-Werror=frame-larger-than=]
We can avoid doing this by open-coding the call to i2c_transfer()
instead of calling tveeprom_read(), and not passing an i2c_client
pointer to tveeprom_hauppauge_analog(), which would ignore that
anyway.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The cx231xx_do_i2c_scan function needs a lot of stack because
it puts an i2c_client structure on it:
drivers/media/usb/cx231xx/cx231xx-i2c.c: In function 'cx231xx_do_i2c_scan':
drivers/media/usb/cx231xx/cx231xx-i2c.c:518:1: error: the frame size of 1248 bytes is larger than 1152 bytes [-Werror=frame-larger-than=]
This changes it to call i2c_transfer() directly instead, avoiding the
need for the structure.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The driver uses a relatively large data structure on the stack, which
showed up on my radar as we get a warning with the "latent entropy"
GCC plugin:
drivers/media/usb/pvrusb2/pvrusb2-eeprom.c:153:1: error: the frame size of 1376 bytes is larger than 1152 bytes [-Werror=frame-larger-than=]
The warning is usually hidden as we raise the warning limit to 2048
when the plugin is enabled, but I'd like to lower that again in the
future, and making this function smaller helps to do that without
build regressions.
Further analysis shows that putting an 'i2c_client' structure on
the stack is not really supported, as the embedded 'struct device'
is not initialized here, and we are only saved by the fact that
the function that is called here does not use the pointer at all.
Fixes: d855497edb ("V4L/DVB (4228a): pvrusb2 to kernel 2.6.18")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Merge tag 'v4.10' into patchwork
Linux 4.10
* tag 'v4.10': (1558 commits)
Linux 4.10
Fix missing sanity check in /dev/sg
scsi: don't BUG_ON() empty DMA transfers
ipv6: release dst on error in ip6_dst_lookup_tail
printk: use rcuidle console tracepoint
ARM: multi_v7_defconfig: enable Qualcomm RPMCC
irda: Fix lockdep annotations in hashbin_delete().
vxlan: fix oops in dev_fill_metadata_dst
dccp: fix freeing skb too early for IPV6_RECVPKTINFO
dpaa_eth: small leak on error
packet: Do not call fanout_release from atomic contexts
reset: fix shared reset triggered_count decrement on error
ntb: ntb_hw_intel: link_poll isn't clearing the pending status properly
ntb_transport: Pick an unused queue
ntb: ntb_perf missing dmaengine_unmap_put
NTB: ntb_transport: fix debugfs_remove_recursive
Revert "nohz: Fix collision between tick and other hrtimers"
vfs: fix uninitialized flags in splice_to_pipe()
drm/radeon: Use mode h/vdisplay fields to hide out of bounds HW cursor
ARM: 8658/1: uaccess: fix zeroing of 64-bit get_user()
...
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Merge tag 'media/v4.10-5' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fix from Mauro Carvalho Chehab:
"A regression fix that makes the Siano driver to work again after the
CONFIG_VMAP_STACK change"
* tag 'media/v4.10-5' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] siano: make it work again with CONFIG_VMAP_STACK
Reported as a Kaffeine bug:
https://bugs.kde.org/show_bug.cgi?id=375811
The USB control messages require DMA to work. We cannot pass
a stack-allocated buffer, as it is not warranted that the
stack would be into a DMA enabled area.
On Kernel 4.9, the default is to not accept DMA on stack anymore
on x86 architecture. On other architectures, this has been a
requirement since Kernel 2.2. So, after this patch, this driver
should likely work fine on all archs.
Tested with USB ID 2040:5510: Hauppauge Windham
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
If the USB driver is enabled but the demodulator is not, we get a link error:
ERROR: "zd1301_demod_get_dvb_frontend" [drivers/media/usb/dvb-usb-v2/zd1301.ko] undefined!
ERROR: "zd1301_demod_get_i2c_adapter" [drivers/media/usb/dvb-usb-v2/zd1301.ko] undefined!
Such a configuration obviously makes no sense, but we should not fail
the build. This tries to mimic what we have for other drivers by turning
the build failure into a runtime failure.
Alternatively we could use an unconditional 'select' or 'depends on' to enforce
a sane configuration.
Fixes: 47d65372b3 ("[media] zd1301_demod: ZyDAS ZD1301 DVB-T demodulator driver")
Fixes: 992b39872b ("[media] zd1301: ZyDAS ZD1301 DVB USB interface driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Commit 17ce039b4e ("[media] cxusb: don't do DMA on stack")
added a kmalloc'ed bounce buffer for writes, but missed to do the same
for reads. As the read only happens after the write is finished, we can
reuse the same buffer.
As dvb_usb_generic_rw handles a read length of 0 by itself, avoid calling
it using the dvb_usb_generic_read wrapper function.
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
I ran into a stack frame size warning because of the on-stack copy of
the USB device structure:
drivers/media/usb/dvb-usb-v2/dvb_usb_core.c: In function 'dvb_usbv2_disconnect':
drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:1029:1: error: the frame size of 1104 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]
Copying a device structure like this is wrong for a number of other reasons
too aside from the possible stack overflow. One of them is that the
dev_info() call will print the name of the device later, but AFAICT
we have only copied a pointer to the name earlier and the actual name
has been freed by the time it gets printed.
This removes the on-stack copy of the device and instead copies the
device name using kstrdup(). I'm ignoring the possible failure here
as both printk() and kfree() are able to deal with NULL pointers.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Adding Hama Hybrid DVB-T Stick support. Technically it's the same
device what Terratec Cinergy HT USB XE is.
Signed-off-by: Piotr Oleszczyk <piotr.oleszczyk@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Internal Master 3 Bus can send and receive only 4 bytes per time.
Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This patch provide only digital support.
The device is based on Si2168 30-demodulator,
Si2158-20 tuner and CX23102-11Z chipset;
USB id: 1b80:d3b2.
Status:
- DVB-T2 works fine;
- Composite and SVideo works fine;
- Analog not implemented.
Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Fixes the following sparse warning:
drivers/media/usb/dvb-usb/gp8psk.c:281:28: warning:
symbol 'gp8psk_fe_ops' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Hauppauge WinTV-dualHD model 01595 is a USB 2.0 dual ATSC/QAM tuner with
the following components:
USB bridge: Empia em28274
Demodulator: 2x LG LGDT3306a at addresses 0xb2 and 0x1c
Tuner: 2x Silicon Labs si2157 at addresses 0xc0 and 0xc4
This patch enables only the first tuner.
Signed-off-by: Kevin Cheng <kcheng@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
While the wakeup path seems to be set up, this waitqueue is actually
never used as no-one enqueues themselves on the list. As such, wakeups
are meaningless without waiters, so lets just get rid of the whole
thing.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
As warned by gcc:
drivers/media/usb/stk1160/stk1160-ac97.c:117:5: warning: no previous prototype for 'stk1160_has_audio' [-Wmissing-prototypes]
int stk1160_has_audio(struct stk1160 *dev)
^~~~~~~~~~~~~~~~~
drivers/media/usb/stk1160/stk1160-ac97.c:125:5: warning: no previous prototype for 'stk1160_has_ac97' [-Wmissing-prototypes]
int stk1160_has_ac97(struct stk1160 *dev)
^~~~~~~~~~~~~~~~
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The STK1160 needs some time to transfer data to and from the AC97 codec.
The transfer completion is indicated by command read/write bits in the
chip's audio control register. The driver should poll these bits and
wait until they have been cleared by hardware before trying to retrieve
the results of a read operation or setting a new write command.
[mchehab@s-opensource.com: make checkpatch happier]
Signed-off-by: Marcel Hasler <mahasler@gmail.com>
Acked-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Some STK1160-based devices use the chip's internal 8-bit ADC. This is
configured through a strap pin. The value of this and other pins can be
read through the POSVA register. If the internal ADC is used, or if
audio is disabled altogether, there's no point trying to setup the AC97
codec.
Signed-off-by: Marcel Hasler <mahasler@gmail.com>
Acked-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Exposing all the channels of the device's internal AC97 codec to
userspace is unnecessary and confusing. Instead the driver should setup
the codec with proper values. This patch removes the mixer and sets up
the codec using optimal values, i.e. the same values set by the Windows
driver. This also makes the device work out-of-the-box, without the need
for the user to reconfigure the device every time it's plugged in.
Signed-off-by: Marcel Hasler <mahasler@gmail.com>
Acked-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The comparison of err < 0 is redundant as err has been previously
been assigned to 0 and has not changed. Remove the redundant check.
Fixes CoverityScan CID#703363 ("Logically dead code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
gcc isn't smart enough to realize it can share most of the argument
buildup and the actual function call between the two branches, so help
it a little.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
It takes more .text to initialize these on the stack than they occupy
in .rodata, so just make them static const.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
ibuf and rbuf in lme2510_int_response are always assigned to before they
are read, and their addresses do not escape the function, so they have
no reason to be static.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Using the %ph printf extension for hex dumps like this makes the
generated code quite a bit smaller.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Drivers might try to access and run enable_source and disable_source
handlers when the driver that implements these handlers is clearing
the handlers during its unregister.
Fix the following race condition:
process 1 process 2
request video streaming unbind au0828
v4l2 checks if tuner is free
... ...
au0828_unregister_media_device()
... ...
(doesn't hold graph_mutex)
mdev->enable_source = NULL;
if (mdev && mdev->enable_source) mdev->disable_source = NULL;
mdev->enable_source()
(enable_source holds graph_mutex)
As shown above enable_source check is done without holding the graph_mutex.
If unbind happens to be in progress, au0828 could clear enable_source and
disable_source handlers leading to null pointer de-reference.
Fix it by protecting enable_source and disable_source set and clear and
protecting enable_source and disable_source handler access and the call
itself.
process 1 process 2
request video streaming unbind au0828
v4l2 checks if tuner is free
... ...
au0828_unregister_media_device()
... ...
(hold graph_mutex while clearing)
mdev->enable_source = NULL;
if (mdev) mdev->disable_source = NULL;
(hold graph_mutex to check and
call enable_source)
if (mdev->enable_source)
mdev->enable_source()
If graph_mutex is held to just heck for handler being null and needs to be
released before calling the handler, there will be another window for the
handlers to be cleared. Hence, enable_source and disable_source handlers
no longer hold the graph_mutex and expect callers to hold it to avoid
forcing them release the graph_mutex before calling the handlers.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
ZyDAS ZD1301 is chip having USB interface and DVB-T demodulator
integrated. This driver is for USB interface part.
Device has USB ID 0ace:13a1. Used tuner is MT2060.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The device driver should keep going even if debugfs initialization fails.
So, change the return type to void.
Signed-off-by: Jaejoong Kim <climbbb.kim@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Remove a superfluous assignment to a local variable at the end of a
function.
Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add an inline function to obtain a struct uvc_buffer pointer from a
struct vb2_v4l2_buffer one.
Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Chip uses so called 8-bit i2c addresses, but on bus there is of
course correct 7-bit addresses with rw bit as lsb - verified
with oscilloscope.
Lets still use correct addresses in driver.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Driver supports 2 different device versions, AX and BX. Use device
IDs to pass chip version information to driver.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
it913x tuner driver is changed to platform model so we need bind it
using platform_device_register_data().
Also remove hacks from I2C adapter where fake tuner driver address
(addr >> 1) were used as those are no longer needed.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Read eeprom content to chip state and read values there when needed.
Also debug dump eeprom content.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Use space characters at some source code places according to
the Linux coding style convention.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "kmalloc_array".
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
When some other buffer is immediately copied into allocated region.
Replace calls to kmalloc followed by a memcpy with a direct
call to kmemdup.
Signed-off-by: Shyam Saini <mayhs11saini@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
trivial fix to spelling mistake in err message
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The driver type can be assigned immediately when an RC device
requests to the framework to allocate the device.
This is an 'enum rc_driver_type' data type and specifies whether
the device is a raw receiver or scancode receiver. The type will
be given as parameter to the rc_allocate_device device.
Change accordingly all the drivers calling rc_allocate_device()
so that the device type is specified during the rc device
allocation. Whenever the device type is not specified, it will be
set as RC_DRIVER_SCANCODE which was the default '0' value.
Suggested-by: Sean Young <sean@mess.org>
Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
unknown and other are for IR protocols for which we have no decoder,
so the raw IR drivers have no chance of generating them. cec is not
an IR protocol.
Signed-off-by: Sean Young <sean@mess.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The d680_dmb keymap has some new new mappings.
Tested-by: Vincent McIntyre <vincent.mcintyre@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Merge tag 'media/v4.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
- fix a regression on tvp5150 causing failures at input selection and
image glitches
- CEC was moved out of staging for v4.10. Fix some bugs on it while not
too late
- fix a regression on pctv452e caused by VM stack changes
- fix suspend issued with smiapp
- fix a regression on cobalt driver
- fix some warnings and Kconfig issues with some random configs.
* tag 'media/v4.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] s5k4ecgx: select CRC32 helper
[media] dvb: avoid warning in dvb_net
[media] v4l: tvp5150: Don't override output pinmuxing at stream on/off time
[media] v4l: tvp5150: Fix comment regarding output pin muxing
[media] v4l: tvp5150: Reset device at probe time, not in get/set format handlers
[media] pctv452e: move buffer to heap, no mutex
[media] media/cobalt: use pci_irq_allocate_vectors
[media] cec: fix race between configuring and unconfiguring
[media] cec: move cec_report_phys_addr into cec_config_thread_func
[media] cec: replace cec_report_features by cec_fill_msg_report_features
[media] cec: update log_addr[] before finishing configuration
[media] cec: CEC_MSG_GIVE_FEATURES should abort for CEC version < 2
[media] cec: when canceling a message, don't overwrite old status info
[media] cec: fix report_current_latency
[media] smiapp: Make suspend and resume functions __maybe_unused
[media] smiapp: Implement power-on and power-off sequences without runtime PM
