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2017-09-23media: cobalt: remove redundant zero check on retvalColin Ian King1-2/+0
The error handling paths all end up with retval being non-zero, so the check for retval being zero is always false and hence is redundant. Remove it. Detected by CoverityScan CID#1309479 ("Logically dead code") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: cx25840: make array stds static const, reduces object code sizeColin Ian King1-1/+1
Don't populate the array syds on the stack, instead make it static const. Makes the object code smaller by over 280 bytes: Before: text data bss dec hex filename 81451 12784 704 94939 172db cx25840-core.o text data bss dec hex filename 81070 12880 704 94654 171be cx25840-core.o Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: lgdt3306a: Use ARRAY_SIZE macroThomas Meyer1-1/+2
Use ARRAY_SIZE macro, rather than explicitly coding some variant of it yourself. Found with: find -type f -name "*.c" -o -name "*.h" | xargs perl -p -i -e 's/\bsizeof\s*\(\s*(\w+)\s*\)\s*\ /\s*sizeof\s*\(\s*\1\s*\[\s*0\s*\]\s*\) /ARRAY_SIZE(\1)/g' and manual check/verification. Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: dvb-frontends/mxl5xx: declare LIST_HEAD(mxllist) staticDaniel Scheller1-1/+1
Fixes one sparse warning: mxl5xx.c:46:1: warning: symbol 'mxllist' was not declared. Should it be static? Signed-off-by: Daniel Scheller <d.scheller@gmx.net> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: rtl28xxu: make array rc_nec_tab static constColin Ian King1-1/+1
Don't populate the array rc_nec_tab on the stack, instead make it static const. Makes the object code smaller by over 620 bytes: Before: text data bss dec hex filename 49511 17040 64 66615 10437 rtl28xxu.o After: text data bss dec hex filename 48825 17104 64 65993 101c9 rtl28xxu.o Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: pci: make i2c_client constBhumika Goyal5-5/+5
Make these const as they are only used in a copy operation. Done using Coccinelle. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: usb: make i2c_client constBhumika Goyal3-3/+3
Make these const as they are only used in a copy operation. Done using Coccinelle. @match disable optional_qualifier@ identifier s; @@ static struct i2c_client s = {...}; @ref@ position p; identifier match.s; @@ s@p @good1@ position ref.p; identifier match.s,f,c; expression e; @@ ( e = s@p | e = s@p.f | c(...,s@p.f,...) | c(...,s@p,...) ) @bad depends on !good1@ position ref.p; identifier match.s; @@ s@p @depends on forall !bad disable optional_qualifier@ identifier match.s; @@ static + const struct i2c_client s; Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: dvb-frontends: delete jump targetsMarkus Elfring4-29/+14
* Return directly after a call of the function "kzalloc" failed at the beginning. * Move a bit of exception handling code into an if branch. * Delete jump targets which became unnecessary with this refactoring. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Hans Verkuil <hansverk@cisco.com>
2017-09-23media: drivers: Adjust checks for null pointersMarkus Elfring9-44/+44
The script “checkpatch.pl” pointed information out like the following. Comparison to NULL could be written !… Thus fix the affected source code places. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Hans Verkuil <hansverk@cisco.com>
2017-09-23media: drivers: improve a size determinationMarkus Elfring17-26/+23
Replace the specification of a data structure by a pointer dereference as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. This issue was detected by using the Coccinelle software. [mchehab@s-opensoure.com: merge similar patches into one] Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Hans Verkuil <hansverk@cisco.com>
2017-09-23media: drivers: delete unnecessary variable initialisationsMarkus Elfring4-5/+5
The variables will be set to an appropriate value before usage. Thus omit the explicit initialisation at the beginning. [mchehab@s-opensource.com: fold similar patches into one] Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Hans Verkuil <hansverk@cisco.com>
2017-09-23media: drivers: delete error messages for failed memory allocationMarkus Elfring23-80/+30
Omit an extra message for a memory allocation failure in this function. This issue was detected by using the Coccinelle software. [mchehab@s-opensource.com: fold several similar patches into one] Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: tc358743: add CEC supportHans Verkuil2-6/+207
Add CEC support for the tc358743 HDMI-CSI bridge. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: tc358743_regs.h: add CEC registersHans Verkuil1-2/+92
Add the missing CEC register defines. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: cec-gpio: add HDMI CEC GPIO driverHans Verkuil4-0/+249
Add a simple HDMI CEC GPIO driver that sits on top of the cec-pin framework. While I have heard of SoCs that use the GPIO pin for CEC (apparently an early RockChip SoC used that), the main use-case of this driver is to function as a debugging tool. By connecting the CEC line to a GPIO pin on a Raspberry Pi 3 for example it turns it into a CEC debugger and protocol analyzer. With 'cec-ctl --monitor-pin' the CEC traffic can be analyzed. But of course it can also be used with any hardware project where the HDMI CEC line is hooked up to a pull-up gpio line. In addition this has (optional) support for tracing HPD changes if the HPD is connected to a GPIO. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: cec: add CEC_EVENT_PIN_HPD_LOW/HIGH eventsHans Verkuil3-9/+35
Add support for two new low-level events: PIN_HPD_LOW and PIN_HPD_HIGH. This is specifically meant for use with the upcoming cec-gpio driver and makes it possible to trace when the HPD pin changes. Some HDMI sinks do strange things with the HPD and this makes it easy to debug this. Note that this also moves the initialization of a devnode mutex and list to the allocate_adapter function: if the HPD is high, then as soon as the HPD interrupt is created an interrupt occurs and cec_queue_pin_hpd_event() is called which requires that the devnode mutex and list are initialized. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: cec-pin.c: use proper ktime accessor functionsHans Verkuil1-15/+22
Use ktime_to_ns/ns_to_ktime. This makes it possible to work with older kernels and the media_build compatibility system. For the mainline kernel these functions are NOPs. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: cec: Respond to unregistered initiators, when applicableJose Abreu1-3/+10
Running CEC 1.4 compliance test we get the following error on test 11.1.6.2: "ERROR: The DUT did not broadcast a <Report Physical Address> message to the unregistered device." Fix this by letting GIVE_PHYSICAL_ADDR message respond to unregistered device. Also, GIVE_DEVICE_VENDOR_ID and GIVE_FEATURES fall in the same category so, respond also to these messages. With this fix we pass CEC 1.4 official compliance. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: Joao Pinto <jpinto@synopsys.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Cc: <stable@vger.kernel.org> # for v4.10 and up Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: s5p-cec: add NACK detection supportHans Verkuil3-2/+14
The s5p-cec driver returned CEC_TX_STATUS_ERROR for the NACK condition. Some digging into the datasheet uncovered the S5P_CEC_TX_STAT1 register where bit 0 indicates if the transmit was nacked or not. Use this to return the correct CEC_TX_STATUS_NACK status to userspace. This was the only driver that couldn't tell a NACK from another error, and that was very unusual. And a potential problem for applications as well. Tested with my Odroid-U3. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: <stable@vger.kernel.org> # for v4.12 and up Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: qcom: camss: Make function vfe_set_selection staticColin Ian King1-1/+1
The function vfe_set_selection is local to the source and does not need to be in global scope, so make it static. Cleans up sparse warning: warning: symbol 'vfe_set_selection' was not declared. Should it be static? Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Todor Tomov <todor.tomov@linaro.org> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: venus: init registered list on streamoffStanimir Varbanov1-0/+1
Add missing init_list_head for the registered buffer list. Absence of the init could lead to a unhandled kernel paging request as below, when streamon/streamoff are called in row. [338046.571321] Unable to handle kernel paging request at virtual address fffffffffffffe00 [338046.574849] pgd = ffff800034820000 [338046.582381] [fffffffffffffe00] *pgd=00000000b60f5003[338046.582545] , *pud=00000000b1f31003 , *pmd=0000000000000000[338046.592082] [338046.597754] Internal error: Oops: 96000004 [#1] PREEMPT SMP [338046.601671] Modules linked in: venus_enc venus_dec venus_core usb_f_ecm g_ether usb_f_rndis u_ether libcomposite ipt_MASQUERADE nf_nat_masquerade_ipv4 arc4 wcn36xx mac80211 btqcomsmd btqca iptable_nat nf_co] [338046.662408] CPU: 0 PID: 5433 Comm: irq/160-venus Tainted: G W 4.9.39+ #232 [338046.668024] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT) [338046.675268] task: ffff80003541cb00 task.stack: ffff800026e20000 [338046.682097] PC is at venus_helper_release_buf_ref+0x28/0x88 [venus_core] [338046.688282] LR is at vdec_event_notify+0xe8/0x150 [venus_dec] [338046.695029] pc : [<ffff000000af6c48>] lr : [<ffff000000a6fc60>] pstate: a0000145 [338046.701256] sp : ffff800026e23bc0 [338046.708494] x29: ffff800026e23bc0 x28: 0000000000000000 [338046.718853] x27: ffff000000afd4f8 x26: ffff800031faa700 [338046.729253] x25: ffff000000afd790 x24: ffff800031faa618 [338046.739664] x23: ffff800003e18138 x22: ffff800002fc9810 [338046.750109] x21: ffff800026e23c28 x20: 0000000000000001 [338046.760592] x19: ffff80002a13b800 x18: 0000000000000010 [338046.771099] x17: 0000ffffa3d01600 x16: ffff000008100428 [338046.781654] x15: 0000000000000006 x14: ffff000089045ba7 [338046.792250] x13: ffff000009045bb6 x12: 00000000004f37c8 [338046.802894] x11: 0000000000267211 x10: 0000000000000000 [338046.813574] x9 : 0000000000032000 x8 : 00000000dc400000 [338046.824274] x7 : 0000000000000000 x6 : ffff800031faa728 [338046.835005] x5 : ffff80002a13b850 x4 : 0000000000000000 [338046.845793] x3 : fffffffffffffdf8 x2 : 0000000000000000 [338046.856602] x1 : 0000000000000003 x0 : ffff80002a13b800 Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-23media: dvb: i2c transfers over usb cannot be done from stackSean Young3-28/+103
Since commit 29d2fef8be11 ("usb: catch attempts to submit urbs with a vmalloc'd transfer buffer"), the AverMedia AverTV DVB-T USB 2.0 (a800) fails to probe. Cc: stable@vger.kernel.org Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-14Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds1-8/+5
Pull more set_fs removal from Al Viro: "Christoph's 'use kernel_read and friends rather than open-coding set_fs()' series" * 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fs: unexport vfs_readv and vfs_writev fs: unexport vfs_read and vfs_write fs: unexport __vfs_read/__vfs_write lustre: switch to kernel_write gadget/f_mass_storage: stop messing with the address limit mconsole: switch to kernel_read btrfs: switch write_buf to kernel_write net/9p: switch p9_fd_read to kernel_write mm/nommu: switch do_mmap_private to kernel_read serial2002: switch serial2002_tty_write to kernel_{read/write} fs: make the buf argument to __kernel_write a void pointer fs: fix kernel_write prototype fs: fix kernel_read prototype fs: move kernel_read to fs/read_write.c fs: move kernel_write to fs/read_write.c autofs4: switch autofs4_write to __kernel_write ashmem: switch to ->read_iter
2017-09-13drivers/media/cec/cec-adap.c: fix build with gcc-4.4.4Andrew Morton1-1/+4
gcc-4.4.4 has issues with initialization of anonymous unions: drivers/media/cec/cec-adap.c: In function 'cec_queue_msg_fh': drivers/media/cec/cec-adap.c:184: error: unknown field 'lost_msgs' specified in initializer work around this. Fixes: 6b2bbb08747a5 ("media: cec: rework the cec event handling") Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Hans Verkuil <hans.verkuil@cisco.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-12Merge tag 'dma-mapping-4.14' of git://git.infradead.org/users/hch/dma-mappingLinus Torvalds1-3/+2
Pull dma-mapping updates from Christoph Hellwig: - removal of the old dma_alloc_noncoherent interface - remove unused flags to dma_declare_coherent_memory - restrict OF DMA configuration to specific physical busses - use the iommu mailing list for dma-mapping questions and patches * tag 'dma-mapping-4.14' of git://git.infradead.org/users/hch/dma-mapping: dma-coherent: fix dma_declare_coherent_memory() logic error ARM: imx: mx31moboard: Remove unused 'dma' variable dma-coherent: remove an unused variable MAINTAINERS: use the iommu list for the dma-mapping subsystem dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flags dma-coherent: remove the DMA_MEMORY_INCLUDES_CHILDREN flag of: restrict DMA configuration dma-mapping: remove dma_alloc_noncoherent and dma_free_noncoherent i825xx: switch to switch to dma_alloc_attrs au1000_eth: switch to dma_alloc_attrs sgiseeq: switch to dma_alloc_attrs dma-mapping: reduce dma_mapping_error inline bloat
2017-09-07Merge tag 'media/v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediaLinus Torvalds550-5109/+36210
Pull media updates from Mauro Carvalho Chehab: "Brazil's Independence Day pull request :-) This is one of the biggest media pull requests, with 625 patches affecting almost all parts of media (RC, DVB, V4L2, CEC, docs). This contains: - A lot of new drivers: * DVB frontends: mxl5xx, stv0910, stv6111; * camera flash: as3645a led driver; * HDMI receiver: adv748X; * camera sensor: Omnivision 6650 5M driver (ov6650); * HDMI CEC: ao-cec meson driver; * V4L2: Qualcom camss driver; * Remote controller: gpio-ir-tx, pwm-ir-tx and zx-irdec drivers. - The DDbridge DVB driver got a massive update, with makes it in sync with modern hardware from that vendor; - There's an important milestone on this series: the DVB documentation was written in 2003, but only started to be updated in 2007. It also used to contain several gaps from the time it was kept out of tree, mentioning error codes and device nodes that never existed upstream. On this series, it received a massive update: all non-deprecated digital TV APIs are now in sync with the current implementation; - Some DVB APIs that aren't used by any upstream driver got removed; - Other parts of the media documentation algo got updated, fixing some bugs on its PDF output and making it compatible with Sphinx version 1.6. As the number of hacks required to build PDF output reduced, I hope we'll have less troubles as newer versions of our documentation toolchain are released (famous last words); - As usual, lots of driver cleanups and improvements" * tag 'media/v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (624 commits) media: leds: as3645a: add V4L2_FLASH_LED_CLASS dependency media: get rid of removed DMX_GET_CAPS and DMX_SET_SOURCE leftovers media: Revert "[media] v4l: async: make v4l2 coexist with devicetree nodes in a dt overlay" media: staging: atomisp: sh_css_calloc shall return a pointer to the allocated space media: Revert "[media] lirc_dev: remove superfluous get/put_device() calls" media: add qcom_camss.rst to v4l-drivers rst file media: dvb headers: make checkpatch happier media: dvb uapi: move frontend legacy API to another part of the book media: pixfmt-srggb12p.rst: better format the table for PDF output media: docs-rst: media: Don't use \small for V4L2_PIX_FMT_SRGGB10 documentation media: index.rst: don't write "Contents:" on PDF output media: pixfmt*.rst: replace a two dots by a comma media: vidioc-g-fmt.rst: adjust table format media: vivid.rst: add a blank line to correct ReST format media: v4l2 uapi book: get rid of driver programming's chapter media: format.rst: use the right markup for important notes media: docs-rst: cardlists: change their format to flat-tables media: em28xx-cardlist.rst: update to reflect last changes media: v4l2-event.rst: adjust table to fit on PDF output media: docs: don't show ToC for each part on PDF output ...
2017-09-07lib/scatterlist: Fix offset type in sg_alloc_table_from_pagesTvrtko Ursulin1-2/+2
Scatterlist entries have an unsigned int for the offset so correct the sg_alloc_table_from_pages function accordingly. Since these are offsets withing a page, unsigned int is wide enough. Also converts callers which were using unsigned long locally with the lower_32_bits annotation to make it explicitly clear what is happening. v2: Use offset_in_page. (Chris Wilson) Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Pawel Osciak <pawel@osciak.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Tomasz Stanislawski <t.stanislaws@samsung.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Alexandre Bounine <alexandre.bounine@idt.com> Cc: linux-media@vger.kernel.org Cc: linux-kernel@vger.kernel.org Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> (v1) Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170731185512.20010-1-tvrtko.ursulin@linux.intel.com
2017-09-05media: get rid of removed DMX_GET_CAPS and DMX_SET_SOURCE leftoversMauro Carvalho Chehab1-20/+0
Those two ioctls were never used within the Kernel. Still, there used to have compat32 code there (and an if #0 block at the core). Get rid of them. Fixes: 286fe1ca3fa1 ("media: dmx.h: get rid of DMX_GET_CAPS") Fixes: 13adefbe9e56 ("media: dmx.h: get rid of DMX_SET_SOURCE") Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05media: Revert "[media] v4l: async: make v4l2 coexist with devicetree nodes in a dt overlay"Rob Herring1-6/+1
This reverts commit d2180e0cf77dc7a7049671d5d57dfa0a228f83c1. The commit was flawed in that if the device_node pointers are different, then in fact a different device is present and the device node could be different in ways other than full_name. As Frank Rowand explained: "When an overlay (1) is removed, all uses and references to the nodes and properties in that overlay are no longer valid. Any driver that uses any information from the overlay _must_ stop using any data from the overlay. Any driver that is bound to a new node in the overlay _must_ unbind. Any driver that became bound to a pre-existing node that was modified by the overlay (became bound after the overlay was applied) _must_ adjust itself to account for any changes to that node when the overlay is removed. One way to do this is to unbind when notified that the overlay is about to be removed, then to re-bind after the overlay is completely removed. If an overlay (2) is subsequently applied, a node with the same full_name as from overlay (1) may exist. There is no guarantee that overlay (1) and overlay (2) are the same overlay, even if that node has the same full_name in both cases." Also, there's not sufficient overlay support in mainline to actually remove and re-apply an overlay to hit this condition as overlays can only be applied from in kernel APIs. Fixes: d2180e0cf77d ("[media] v4l: async: make v4l2 coexist with devicetree nodes in a dt overlay") Cc: Javier Martinez Canillas <javier@osg.samsung.com> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Frank Rowand <frowand.list@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Javi Merino <javi.merino@kernel.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05media: Revert "[media] lirc_dev: remove superfluous get/put_device() calls"Sean Young1-0/+4
This reverts commit 5be2b76a9ca4ea5fd3e221114d62eeb0d78267ca. Only when the lirc device is freed, should we drop our reference to rc_dev, else we the rc_dev is freed to early. If userspace has a file descriptor open during unplug, it goes bang. ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x7bb/0x1e10 Read of size 8 at addr ffff8801d7d61ed0 by task ir-rec/2609 -snip- mutex_lock_nested+0x1b/0x20 ? mutex_lock_nested+0x1b/0x20 rc_close.part.6+0x20/0x60 [rc_core] rc_close+0x13/0x20 [rc_core] lirc_dev_fop_close+0x62/0xd0 [lirc_dev] __fput+0x236/0x410 ? fput+0xb0/0xb0 ? do_raw_spin_trylock+0x110/0x110 ? set_rq_offline.part.70+0xa0/0xa0 ____fput+0xe/0x10 task_work_run+0x116/0x180 ? task_work_cancel+0x170/0x170 ? _raw_spin_unlock+0x27/0x40 ? switch_task_namespaces+0x5f/0x90 do_exit+0x68b/0xe80 Cc: stable@vger.kernel.org # For Kernel 4.13 Fixes: 5be2b76a9ca4 ("[media] lirc_dev: remove superfluous get/put_device() calls") Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05media: dst_ca: remove CA_SET_DESCR boilerplateMauro Carvalho Chehab1-17/+0
This ioctl is not implemented at dst_ca driver. There's just a boilerplate code there. Remove it, as it is unlikely that anyone would implement it those days. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05media: dst_ca: return a proper error code from CA errorsMauro Carvalho Chehab1-19/+22
Right now, on several places, the driver is returning a "-1" error to userspace, instead of a proper error code. Fix it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05media: ca.h: get rid of CA_SET_PIDMauro Carvalho Chehab1-16/+0
This ioctl seems to be some attempt to support a feature at the bt8xx dst_ca driver. Yet, as said there, it "needs more work". Right now, the code there is just a boilerplate. At the end of the day, no driver uses this ioctl, nor it is documented anywhere (except for "needs more work"). So, get rid of it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05media: dvb/frontend.h: move out a private internal structureMauro Carvalho Chehab1-0/+11
struct dtv_cmds_h is just an ancillary struct used by the dvb_frontend.c to internally store frontend commands. It doesn't belong to the userspace header, nor it is used anywhere, except inside the DVB core. So, remove it from the header. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05media: dmx.h: split typedefs from structsMauro Carvalho Chehab1-2/+2
Using typedefs inside the Kernel is against CodingStyle, and there's no good usage here. Just like we did at frontend.h, at commit 0df289a209e0 ("[media] dvb: Get rid of typedev usage for enums"), let's keep those typedefs only to provide userspace backward compatibility. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05media: ca.h: split typedefs from structsMauro Carvalho Chehab2-7/+7
Using typedefs inside the Kernel is against CodingStyle, and there's no good usage here. Just like we did at frontend.h, at commit 0df289a209e0 ("[media] dvb: Get rid of typedev usage for enums"), let's keep those typedefs only to provide userspace backward compatibility. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-04fs: fix kernel_read prototypeChristoph Hellwig1-8/+5
Use proper ssize_t and size_t types for the return value and count argument, move the offset last and make it an in/out argument like all other read/write helpers, and make the buf argument a void pointer to get rid of lots of casts in the callers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-09-01dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flagsChristoph Hellwig1-3/+2
DMA_MEMORY_IO was never used in the tree, so remove it. That means there is no need for the DMA_MEMORY_MAP flag either now, so remove it as well and change dma_declare_coherent_memory to return a normal errno value. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
2017-08-31media: serial_ir: fix tx timing calculation on 32-bitSean Young1-20/+14
Move the calculation to where it is needed, so the result doesn't need to be stored in the device struct. Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-31media: rc: gpio-ir-tx: use ktime accessor functionsSean Young1-5/+7
Prefer using accessor functions so we are not dependent on the ktime_t type. Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-31media: rc: use ktime accessor functionsJasmin Jessich1-5/+6
Prefer using accessor functions so we are not dependent on the ktime_t type. Signed-off-by: Jasmin Jessich <jasmin@anw.at> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-27media: max2175: Propagate the real error on devm_clk_get() failureFabio Estevam1-1/+1
When devm_clk_get() fails we should return the real error code instead of always returning -ENODEV. This allows defer probe to happen in the case the clock provider has not been enabled by the time max2175 driver gets probed. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-27media: cx23885: Explicitly list Hauppauge model numbers of HVR-4400 and HVR-5500Matthias Schwarzott1-0/+6
Add two new model numbers to suppress this message in kernel log: cx23885: cx23885[0]: warning: unknown hauppauge model #121029 Add these model numbers: * Model 121019 - WinTV-HVR4400 * Model 121029 - WinTV-HVR5500 For WinTV-HVR4400 the documentation and my hardware differ: Documentation says it supports DVB-S/S2 and DVB-T, but my hardware also supports DVB-C. Signed-off-by: Matthias Schwarzott <zzam@gentoo.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-27media: i2c: adv748x: Export I2C device table entries as module aliasesJavier Martinez Canillas1-0/+1
The I2C core always reports a MODALIAS of the form i2c:<foo> even if the device was registered via OF, and the driver is only exporting the OF ID table entries as module aliases. So if the driver is built as module, autoload won't work since udev/kmod won't be able to match the registered OF device with its driver module. Before this patch: $ modinfo drivers/media/i2c/adv748x/adv748x.ko | grep alias alias: of:N*T*Cadi,adv7482C* alias: of:N*T*Cadi,adv7482 alias: of:N*T*Cadi,adv7481C* alias: of:N*T*Cadi,adv7481 After this patch: modinfo drivers/media/i2c/adv748x/adv748x.ko | grep alias alias: of:N*T*Cadi,adv7482C* alias: of:N*T*Cadi,adv7482 alias: of:N*T*Cadi,adv7481C* alias: of:N*T*Cadi,adv7481 alias: i2c:adv7482 alias: i2c:adv7481 Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-27media: dw2102: make dvb_usb_device_description structures constBhumika Goyal1-7/+7
dvb_usb_device_description structures are only used during a copy operation. Therefore, declare them as const. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-27media: mn88473: reset stream ID reg if no PLP givenOlli Salonen1-1/+3
If the PLP given is NO_STREAM_ID_FILTER (~0u) don't try to set that into the PLP register. Set PLP to 0 instead. Signed-off-by: Olli Salonen <olli.salonen@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-27media: mn88472: reset stream ID reg if no PLP givenOlli Salonen1-1/+3
If the PLP given is NO_STREAM_ID_FILTER (~0u) don't try to set that into the PLP register. Set PLP to 0 instead. Signed-off-by: Olli Salonen <olli.salonen@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-27media: dvb_frontend: initialize variable s with FE_NONE instead of 0Colin Ian King1-1/+1
GIT_AUTHOR_NAME=Colin King GIT_AUTHOR_EMAIL=colin.king@canonical.com In a previous commit, we added FE_NONE as an unknown fe_status. Initialize variable s to FE_NONE instead of the more opaque value 0. Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-27media: dvb_frontend: ensure that inital front end status initializedColin Ian King1-1/+1
The fe_status variable s is not initialized meaning it can have any random garbage status. This could be problematic if fe->ops.tune is false as s is not updated by the call to fe->ops.tune() and a subsequent check on the change status will using a garbage value. Fix this by adding FE_NONE to the enum fe_status and initializing s to this. Detected by CoverityScan, CID#112887 ("Uninitialized scalar variable") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-27media: usbvision: Improve a size determination in usbvision_alloc()Markus Elfring1-1/+1
Replace the specification of a data structure by a pointer dereference as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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