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The following functions test whether their argument is NULL
and then return immediately.
* drm_fbdev_cma_hotplug_event
* drm_fbdev_cma_restore_mode
Thus the tests around their calls are not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/fb33d930-6a5c-c501-6676-26bd486f1cb5@users.sourceforge.net
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drm_gem_object_unreference_unlocked()
The drm_gem_object_unreference_unlocked() function tests whether
its argument is NULL and then returns immediately.
Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/b66399ed-278b-b85d-4a21-b34164936ef6@users.sourceforge.net
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drm_gem_object_unreference_unlocked()
The drm_gem_object_unreference_unlocked() function tests whether
its argument is NULL and then returns immediately.
Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1e3a8c0d-e737-f092-727e-af7e3810b8dc@users.sourceforge.net
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vGEM buffers are useful for passing data between software clients and
hardware renders. By allowing the user to create and attach fences to
the exported vGEM buffers (on the dma-buf), the user can implement a
deferred renderer and queue hardware operations like flipping and then
signal the buffer readiness (i.e. this allows the user to schedule
operations out-of-order, but have them complete in-order).
This also makes it much easier to write tightly controlled testcases for
dma-buf fencing and signaling between hardware drivers.
v2: Don't pretend the fences exist in an ordered timeline, but allocate
a separate fence-context for each fence so that the fences are
unordered.
v3: Make the debug output more interesting, and show the signaled status.
v4: Automatically signal the fence to prevent userspace from
indefinitely hanging drivers.
Testcase: igt/vgem_basic/dmabuf-fence
Testcase: igt/vgem_slow/nohang
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Zach Reizner <zachr@google.com>
Cc: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Zach Reizner <zachr@google.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1468571471-12610-1-git-send-email-chris@chris-wilson.co.uk
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The chip can drive 2 sets of RGB leds. Controller can
be controlled via PWM, I2C and audio synchronisation.
This driver uses I2C to communicate with the chip.
Datasheet: http://www.ti.com/lit/gpn/lp3952
Signed-off-by: Tony Makkiel <tony.makkiel@daqri.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
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The Digianswer sniffer devices allow for reading a firmware specific
information string. If it is available, then inform the Bluetooth core
about it via hci_set_fw_info. That exposes it via debugfs like this:
# cat /sys/kernel/debug/bluetooth/hci0/firmware_info
SNIF_102,BB930,02/01/18,10:37:56
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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Some Bluetooth controllers allow for reading hardware and firmware
related vendor specific infos. If they are available, then they can be
exposed via debugfs now.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The protoypes for hci_recv_frame and hci_recv_diag are in the wrong
location in the header file. Move them close to all the other hci_dev
related exported functions.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.
There was a check on CAP_NET_ADMIN in bfin_mac_ethtool_setsettings,
but this check is already done in dev_ethtool, so no need to repeat
it before calling the generic function.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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drm-next
This time, a bunch of cleanups and refactoring work so that we can get
dt bindings upstream. In general, we keep compatibility with existing
downstream bindings as much as possible, to make backports to device
kernels easier, but now we have cleaner upstream bindings so that we
can start landing gpu/display support in upstream dts files.
Plus shrinker and madvise support, which has been on my todo list for
a long time. And support for arbitrary # of cmd bufs in submit ioctl
(I've got libdrm+mesa userspace for this on branches) to enable some
of the mesa batch/reorder stuff I'm working on. Userspace decides
whether this is supported based on advertised driver version. For the
interesting userspace bits, see:
https://github.com/freedreno/libdrm/commit/1baf03ac6e77049d9c8be1e3d5164283ce82c9db
Plus support for ASoC hdmi audio codec, and few other random other
cleanups.
* 'msm-next' of git://people.freedesktop.org/~robclark/linux: (52 commits)
drm/msm: Delete an unnecessary check before drm_gem_object_unreference()
drm/msm: Delete unnecessary checks before drm_gem_object_unreference_unlocked()
drm/msm/hdmi: Delete an unnecessary check before the function call "kfree"
drm/msm: return -EFAULT instead of bytes remaining
drm/msm/hdmi: use PTR_ERR_OR_ZERO() to simplify the code
drm/msm: add missing of_node_put after calling of_parse_phandle
drm/msm: Replace drm_fb_get_bpp_depth() with drm_format_plane_cpp()
drm/msm/dsi: Fix return value check in msm_dsi_host_set_display_mode()
drm: msm: Add ASoC generic hdmi audio codec support.
drm/msm/rd: add module param to dump all bo's
drm/msm/rd: split out snapshot_buf helper
drm/msm: bump kernel api version
drm/msm: deal with arbitrary # of cmd buffers
drm/msm: wire up vmap shrinker
drm/msm: change gem->vmap() to get/put
drm/msm: shrinker support
drm/msm: add put_iova() helper
drm/msm: add madvise ioctl
drm/msm: use mutex_lock_interruptible for submit ioctl
dt-bindings: msm/mdp: Provide details on MDP interface ports
...
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alloc_workqueue replaces deprecated create_singlethread_workqueue().
A dedicated workqueue has been used since the workitem viz
lp->txtimeout_reinit is involved in reinitialization if a TX timeout
occurs, which is necessary to guarantee forward progress in packet
processing. As a network device can be used during memory reclaim, the
workqueue needs forward progress guarantee under memory pressure.
WQ_MEM_RECLAIM has been set to ensure this.
Since there is only a single work item, explicit concurrency limit is
unnecessary here.
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We know that the attributes will need updating if there is still a
LAYOUTCOMMIT outstanding.
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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The hdmi output in rcar-du uses the i2c slave encoder interface to link
to the adv7511 encoder chip. The kms driver creates encoder and connector
entities that internally uses the drm_encoder_slave_funcs ops provided by
the slave encoder driver.
Change the driver such that it expects a bridge entity instead of a slave
encoder. The hdmi connector code isn't needed anymore as we expect the
adv7511 bridge driver to create/manage the connector.
Note that the kms driver still expects a connector node for hdmi to be
present in DT. This node has no connection to the connector created
by the bridge driver.
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
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While trying to make gpu docs warning free I stumbled over one output
which wasn't following proper compiler error output standards. Fix it
up for more quickfix awesomeness.
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Arbitrary X.509 certificates without authority key identifiers (AKIs)
can be added to "trusted" keyrings, including IMA or EVM certs loaded
from the filesystem. Signature verification is currently bypassed for
certs without AKIs.
Trusted keys were recently refactored, and this bug is not present in
4.6.
restrict_link_by_signature should return -ENOKEY (no matching parent
certificate found) if the certificate being evaluated has no AKIs,
instead of bypassing signature checks and returning 0 (new certificate
accepted).
Reported-by: Petko Manolov <petkan@mip-labs.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
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Commit e68503bd68 forgot to set digest_len and thus cause the following
error reported by kexec when launching a crash kernel:
kexec_file_load failed: Bad message
Fixes: e68503bd68 (KEYS: Generalise system_verify_data() to provide access to internal content)
Signed-off-by: Lans Zhang <jia.zhang@windriver.com>
Tested-by: Dave Young <dyoung@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
cc: kexec@lists.infradead.org
cc: linux-crypto@vger.kernel.org
Signed-off-by: James Morris <james.l.morris@oracle.com>
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This fix resolves the following kernel panic if an empty or missing
AuthorityKeyIdentifier is encountered and DEBUG is defined in
pkcs7_verify.c.
[ 459.041989] PKEY: <==public_key_verify_signature() = 0
[ 459.041993] PKCS7: Verified signature 1
[ 459.041995] PKCS7: ==> pkcs7_verify_sig_chain()
[ 459.041999] PKCS7: verify Sample DB Certificate for SCP: 01
[ 459.042002] PKCS7: - issuer Sample KEK Certificate for SCP
[ 459.042014] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 459.042135] IP: [<ffffffff813e7b4c>] pkcs7_verify+0x72c/0x7f0
[ 459.042217] PGD 739e6067 PUD 77719067 PMD 0
[ 459.042286] Oops: 0000 [#1] PREEMPT SMP
[ 459.042328] Modules linked in:
[ 459.042368] CPU: 0 PID: 474 Comm: kexec Not tainted 4.7.0-rc7-WR8.0.0.0_standard+ #18
[ 459.042462] Hardware name: To be filled by O.E.M. To be filled by O.E.M./Aptio CRB, BIOS 5.6.5 10/09/2014
[ 459.042586] task: ffff880073a50000 ti: ffff8800738e8000 task.ti: ffff8800738e8000
[ 459.042675] RIP: 0010:[<ffffffff813e7b4c>] [<ffffffff813e7b4c>] pkcs7_verify+0x72c/0x7f0
[ 459.042784] RSP: 0018:ffff8800738ebd58 EFLAGS: 00010246
[ 459.042845] RAX: 0000000000000000 RBX: ffff880076b7da80 RCX: 0000000000000006
[ 459.042929] RDX: 0000000000000001 RSI: ffffffff81c85001 RDI: ffffffff81ca00a9
[ 459.043014] RBP: ffff8800738ebd98 R08: 0000000000000400 R09: ffff8800788a304c
[ 459.043098] R10: 0000000000000000 R11: 00000000000060ca R12: ffff8800769a2bc0
[ 459.043182] R13: ffff880077358300 R14: 0000000000000000 R15: ffff8800769a2dc0
[ 459.043268] FS: 00007f24cc741700(0000) GS:ffff880074e00000(0000) knlGS:0000000000000000
[ 459.043365] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 459.043431] CR2: 0000000000000000 CR3: 0000000073a36000 CR4: 00000000001006f0
[ 459.043514] Stack:
[ 459.043530] 0000000000000000 ffffffbf00000020 31ffffff813e68b0 0000000000000002
[ 459.043644] ffff8800769a2bc0 0000000000000000 00000000007197b8 0000000000000002
[ 459.043756] ffff8800738ebdd8 ffffffff81153fb1 0000000000000000 0000000000000000
[ 459.043869] Call Trace:
[ 459.043898] [<ffffffff81153fb1>] verify_pkcs7_signature+0x61/0x140
[ 459.043974] [<ffffffff813e7f0b>] verify_pefile_signature+0x2cb/0x830
[ 459.044052] [<ffffffff813e8470>] ? verify_pefile_signature+0x830/0x830
[ 459.044134] [<ffffffff81048e25>] bzImage64_verify_sig+0x15/0x20
[ 459.046332] [<ffffffff81046e09>] arch_kexec_kernel_verify_sig+0x29/0x40
[ 459.048552] [<ffffffff810f10e4>] SyS_kexec_file_load+0x1f4/0x6c0
[ 459.050768] [<ffffffff81050e36>] ? __do_page_fault+0x1b6/0x550
[ 459.052996] [<ffffffff8199241f>] entry_SYSCALL_64_fastpath+0x17/0x93
[ 459.055242] Code: e8 0a d6 ff ff 85 c0 0f 88 7a fb ff ff 4d 39 fd 4d 89 7d 08 74 45 4d 89 fd e9 14 fe ff ff 4d 8b 76 08 31 c0 48 c7 c7 a9 00 ca 81 <41> 0f b7 36 49 8d 56 02 e8 d0 91 d6 ff 4d 8b 3c 24 4d 85 ff 0f
[ 459.060535] RIP [<ffffffff813e7b4c>] pkcs7_verify+0x72c/0x7f0
[ 459.063040] RSP <ffff8800738ebd58>
[ 459.065456] CR2: 0000000000000000
[ 459.075998] ---[ end trace c15f0e897cda28dc ]---
Signed-off-by: Lans Zhang <jia.zhang@windriver.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
cc: linux-crypto@vger.kernel.org
cc: kexec@lists.infradead.org
Signed-off-by: James Morris <james.l.morris@oracle.com>
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This document were really old. Update it to reflect the current
status of the IR drivers for TV.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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This section is outdated, but let's add it, after converting
to ReST, and then fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert it to ReST and add to media/v4l-drivers book.
As the sections here (and on other docs) are numbered,
let's also make this book auto-numbered.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert it to ReST and add to media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert it to ReST and add to media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert it to ReST format and add it at media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert it to ReST and add to media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert it to ReST and add it to the media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert it to ReST and add to media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert it to ReST and add it to media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert it to ReST and add to the media/v4l-device book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert it to ReST and add it to the media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert pxa_camera to ReST format and add it to the
media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert pvrusb2 documentation to ReST file and removed the note
about an html version of the documentation, as it is not
shipped inside the Kernel.
Add it to media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert the omap4_camera documentation to ReST and add it to
the media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert omap3isp documentation to ReST and add it to the
media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert the meye documentation to rst and add it to the
media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert ivtv documentation to rst, update the links there
and add to media/v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert the document to rst and add it to the v4l-drivers
book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert it to rst format and add it to the v4l-drivers book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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This doc is outdated, and contains information that it is not
true anymore. Update it to reflect the changes that this
driver suffered since I started working on it.
While here, also update Gerd's name.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert the cx88 documentation to rst and add it to the v4l-devices
book
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert the documentation to rst, merge the two files and
add to the index.rst.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Convert the documentation to rst and add it to the book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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This file is almost ok, but it needs chapter/sections
and a code-block.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Fix fourcc for it to be correcly parsed by Sphinx.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Move V4L documentation files to media/v4l-drivers. Those aren't
core stuff, so they don't fit at the kAPI document.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Sphinx wants to interpret all literal blocks as being in the chosen
language and complains when an attempt to parse a block fails.
kernel-documentation.rst has a few blocks that are not in C; make that
explicit to shut down the associated warnings.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Adds documentation for V4L drivers.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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