- 23 Jun, 2020 40 commits
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Jia-Ju Bai authored
The value av7110->debi_virt is stored in DMA memory, and it is assigned to data, and thus data[0] can be modified at any time by malicious hardware. In this case, "if (data[0] < 2)" can be passed, but then data[0] can be changed into a large number, which may cause buffer overflow when the code "av7110->ci_slot[data[0]]" is used. To fix this possible bug, data[0] is assigned to a local variable, which replaces the use of data[0]. Signed-off-by:
Jia-Ju Bai <baijiaju@tsinghua.edu.cn> Signed-off-by:
Sean Young <sean@mess.org> Signed-off-by:
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Jan Pieter van Woerkom authored
MyGica T230* receivers also do DVB-C and DVB-T: change their names. Signed-off-by:
Jan Pieter van Woerkom <jp@jpvw.nl> Signed-off-by:
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Arnd Bergmann authored
CONFIG_DVB_USB_CXUSB_ANALOG is a 'bool' symbol with a dependency on the tristate CONFIG_VIDEO_V4L2, which means it can be enabled as =y even when its dependency is =m. This leads to a link failure: drivers/media/usb/dvb-usb/cxusb-analog.o: In function `cxusb_medion_analog_init': cxusb-analog.c:(.text+0x92): undefined reference to `v4l2_subdev_call_wrappers' drivers/media/usb/dvb-usb/cxusb-analog.o: In function `cxusb_medion_register_analog': cxusb-analog.c:(.text+0x466): undefined reference to `v4l2_device_register' cxusb-analog.c:(.text+0x4c3): undefined reference to `v4l2_i2c_new_subdev' cxusb-analog.c:(.text+0x4fb): undefined reference to `v4l2_subdev_call_wrappers' ... Change the dependency only disallow the analog portion of the driver in that configuration. Fixes: e478d405 ("media: cxusb: add analog mode support for Medion MD95700") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Sean Young authored
This has been maintained for some time, update MAINTAINERS to reflect. Signed-off-by:
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Sean Young authored
The IR Droid / IR Toy device used custom protocol over serial line, so it is presenting itself as CDC ACM device. Now that we have proper in-kernel driver for it we need to black-list the device in cdc-acm driver. http://dangerousprototypes.com/docs/USB_Infrared_Toy https://www.irdroid.com/irdroid-usb-ir-transceiver/Acked-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Sean Young authored
http://dangerousprototypes.com/docs/USB_Infrared_Toy https://www.irdroid.com/irdroid-usb-ir-transceiver/Reviewed-by:
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Mauro Carvalho Chehab authored
The media documents under the uAPI should be GFDL compatible. So, make this one dual-licensed GPL-2.0 or GFDL-1.1+ with no-invariant sections. Signed-off-by:
Tomasz Figa <tfiga@chromium.org> Signed-off-by:
Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by:
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Hans Verkuil authored
Setting the stateful encoder capture frame interval is only supported if this flag is set. Document this. Signed-off-by:
Michael Tretter <m.tretter@pengutronix.de> Acked-by:
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Hans Verkuil authored
Add the V4L2_FMT_FLAG_ENC_CAP_FRAME_INTERVAL flag to signal that the coded frame interval can be set separately from the raw frame interval for stateful encoders. Signed-off-by:
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Hans Verkuil authored
Add missing periods at the end of two sentences. Although mandatory -> Although not mandatory Signed-off-by:
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Hans Verkuil authored
This documentation is very outdated. In particular, it is not obvious at all that this is used to change the framerate of sensors. Fix it, and include references to the stateful encoder API where this works slightly different. Signed-off-by:
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Tomasz Figa authored
Due to complexity of the video encoding process, the V4L2 drivers of stateful encoder hardware require specific sequences of V4L2 API calls to be followed. These include capability enumeration, initialization, encoding, encode parameters change, drain and reset. Specifics of the above have been discussed during Media Workshops at LinuxCon Europe 2012 in Barcelona and then later Embedded Linux Conference Europe 2014 in Düsseldorf. The de facto Codec API that originated at those events was later implemented by the drivers we already have merged in mainline, such as s5p-mfc or coda. The only thing missing was the real specification included as a part of Linux Media documentation. Fix it now and document the encoder part of the Codec API. Signed-off-by:
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Sergey Senozhatsky authored
Add a cache_hints module param to control per-queue user space cache hints support. Signed-off-by:
Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by:
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Sergey Senozhatsky authored
That if-statement seems to be unneeded. Signed-off-by:
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Sergey Senozhatsky authored
We moved cache management decision making to the upper layer and rely on buffer's need_cache_sync flags and videobuf2 core. If the upper layer (core) has decided to invoke ->prepare() or ->finish() then we must sync. For DMABUF ->need_cache_sync_on_prepare and ->need_cache_sync_on_flush are always false so videobuf core does not call ->prepare() and ->finish() on such buffers. Additionally, scratch the DMABUF comment. Signed-off-by:
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Sergey Senozhatsky authored
Provide begin_cpu_access() and end_cpu_access() dma_buf_ops callbacks for cache synchronisation on exported buffers. V4L2_FLAG_MEMORY_NON_CONSISTENT has no effect on dma-sg buffers. dma-sg allocates memory using the page allocator directly, so there is no memory consistency guarantee. Signed-off-by:
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Sergey Senozhatsky authored
Provide begin_cpu_access() and end_cpu_access() callbacks for cache synchronisation on exported buffers. The patch also adds a new helper function - vb2_dc_buffer_consistent(), which returns true is if the buffer is consistent (DMA_ATTR_NON_CONSISTENT bit cleared), so then we don't need to sync anything. Signed-off-by:
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Sergey Senozhatsky authored
This simplifies the code a tiny bit and let's us to avoid unneeded ->prepare()/->finish() calls. Signed-off-by:
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Sergey Senozhatsky authored
Skip ->prepare() or/and ->finish() cache synchronisation if user-space requested us to do so (or when queue dma direction permits us to skip cache syncs). Signed-off-by:
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Sergey Senozhatsky authored
Factor out the code, no functional changes. Signed-off-by:
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Sergey Senozhatsky authored
This patch lets user-space to request a non-consistent memory allocation during CREATE_BUFS and REQBUFS ioctl calls. = CREATE_BUFS struct v4l2_create_buffers has seven 4-byte reserved areas, so reserved[0] is renamed to ->flags. The struct, thus, now has six reserved 4-byte regions. = CREATE_BUFS32 struct v4l2_create_buffers32 has seven 4-byte reserved areas, so reserved[0] is renamed to ->flags. The struct, thus, now has six reserved 4-byte regions. = REQBUFS We use one bit of a ->reserved[1] member of struct v4l2_requestbuffers, which is now renamed to ->flags. Unlike v4l2_create_buffers, struct v4l2_requestbuffers does not have enough reserved room. Therefore for backward compatibility ->reserved and ->flags were put into anonymous union. Signed-off-by:
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Sergey Senozhatsky authored
Preparations for future V4L2_FLAG_MEMORY_NON_CONSISTENT support. Extend vb2_core_reqbufs() parameters list to accept requests' ->flags, which will be used for memory consistency configuration. An attempt to allocate a buffer with consistency requirements which don't match queue's consistency model will fail. Signed-off-by:
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Sergey Senozhatsky authored
By setting or clearing V4L2_FLAG_MEMORY_NON_CONSISTENT flag user-space should be able to set or clear queue's NON_CONSISTENT ->dma_attrs. Queue's ->dma_attrs are passed to the underlying allocator in __vb2_buf_mem_alloc(), so thus user-space is able to request vb2 buffer's memory to be either consistent (coherent) or non-consistent. The patch set also adds a corresponding capability flag: fill_buf_caps() reports V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS when queue supports user-space cache management hints. Note, however, that MMAP_CACHE_HINTS capability only valid when the queue is used for memory MMAP-ed streaming I/O. Signed-off-by:
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Sergey Senozhatsky authored
Set video buffer cache management flags corresponding to V4L2 cache flags. Both ->prepare() and ->finish() cache management hints should be passed during this stage (buffer preparation), because there is no other way for user-space to tell V4L2 to avoid ->finish() cache flush. Signed-off-by:
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Sergey Senozhatsky authored
Extend vb2_buffer and vb2_queue structs with cache management members. V4L2 UAPI already contains two buffer flags which user-space, supposedly, can use to control buffer cache sync: - V4L2_BUF_FLAG_NO_CACHE_INVALIDATE - V4L2_BUF_FLAG_NO_CACHE_CLEAN None of these, however, do anything at the moment. This patch set is intended to change it. Since user-space cache management hints are supposed to be implemented on a per-buffer basis we need to extend vb2_buffer struct with two new members ->need_cache_sync_on_prepare and ->need_cache_sync_on_finish, which will store corresponding user-space hints. In order to preserve the existing behaviour, user-space cache managements flags will be handled only by those drivers that permit user-space cache hints. That's the purpose of vb2_queue ->allow_cache_hints member. Driver must set ->allow_cache_hints during queue initialisation to enable cache management hints mechanism. Signed-off-by:
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Sergey Senozhatsky authored
Switch from 'unsigned' to 'unsigned int' so that checkpatch doesn't complain. Signed-off-by:
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Niklas Söderlund authored
There are two typos in the byte order diagram. On row 1 and 3 the low bits for the 3rd pixel B02 and B22 are labeled as R02 and R22. On row 2 the row index is 0 for all pixels where it should be 1. Signed-off-by:
Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by:
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Colin Ian King authored
The variable retval is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by:Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Dinghao Liu authored
When platform_get_resource() returns an error code, a pairing runtime PM usage counter decrement is needed to keep the counter balanced. Signed-off-by:
Dinghao Liu <dinghao.liu@zju.edu.cn> Reviewed-by:
Lad Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by:
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Dinghao Liu authored
pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. For all error paths after pm_runtime_get_sync(), things are the same. Signed-off-by:
Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by:
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Dinghao Liu authored
pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. Signed-off-by:
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Dinghao Liu authored
pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. Signed-off-by:
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Dinghao Liu authored
pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. Signed-off-by:
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Dinghao Liu authored
pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. Signed-off-by:
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Dinghao Liu authored
pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. Signed-off-by:
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Dinghao Liu authored
pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. Signed-off-by:
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Dinghao Liu authored
pm_runtime_get() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. Signed-off-by:
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Dinghao Liu authored
pm_runtime_get_sync() increments the runtime PM usage counter even the call returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. Signed-off-by:
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Dafna Hirschfeld authored
In some debug prints a wrong 'dev' argument is used for the dev_(dbg/err/warn), this cause a prefix "(NULL device *)" to the prints. In some prints the 'dev' of the sensor subdevice is used which is also wrong. Signed-off-by:
Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> [hverkuil-cisco@xs4all.nl: s/in subdev/in sensor subdev/ as per Laurent's comment] Signed-off-by:
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Dafna Hirschfeld authored
The flags that indicate which statistics are read are already set in the functions that read them so there is no need to set them in the function rkisp1_stats_send_measurement. Signed-off-by:
Helen Koike <helen.koike@collabora.com> Reviewed-by:
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