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'spi/topic/ti-qspi', 'spi/topic/topcliff-pch' and 'spi/topic/txx9' into spi-next
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'spi/topic/s3c64xx', 'spi/topic/sh' and 'spi/topic/sh-msiof' into spi-next
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'spi/topic/orion', 'spi/topic/pic32' and 'spi/topic/pic32-sqi' into spi-next
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'spi/topic/loopback', 'spi/topic/maintainers' and 'spi/topic/mpc52xx-psc' into spi-next
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'spi/topic/clps711x', 'spi/topic/doc' and 'spi/topic/dt' into spi-next
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spi-linus
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Separate driver probing from SPI transfer functions.
Signed-off-by: Jan Glauber <jglauber@cavium.com>
Tested-by: Steven J. Hill <steven.hill@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Move the register definitions to the drivers directory because they
are only used there.
Signed-off-by: Jan Glauber <jglauber@cavium.com>
Tested-by: Steven J. Hill <steven.hill@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Instead of hard-coding the register offsets put them into a struct
and set them in the probe function.
Signed-off-by: Jan Glauber <jglauber@cavium.com>
Tested-by: Steven J. Hill <steven.hill@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Storing the system clock frequency in struct octeon_spi avoids
calling the MIPS specific octeon_get_io_clock_rate() for every transfer.
Signed-off-by: Jan Glauber <jglauber@cavium.com>
Tested-by: Steven J. Hill <steven.hill@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Remove all calls to cvmx_read_csr()/cvmx_write_csr() and use
the portable readq()/writeq() functions.
Signed-off-by: Steven J. Hill <steven.hill@cavium.com>
Signed-off-by: Jan Glauber <jglauber@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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wait_for_completion_timeout returns unsigned long not int so the check for
<= 0 should be == 0 here, and the type unsigned long. The function return
is set to -ETIMEDOUT to reflect the actual problem.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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wait_for_completion_timeout returns unsigned long not int so the check for
<= 0 should be == 0 here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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We triggered soft-lockup under stress test which
open/access/write/close one file concurrently on more than
five different CPUs:
WARN: soft lockup - CPU#0 stuck for 11s! [who:30631]
...
[<ffffffc0003986f8>] dput+0x100/0x298
[<ffffffc00038c2dc>] terminate_walk+0x4c/0x60
[<ffffffc00038f56c>] path_lookupat+0x5cc/0x7a8
[<ffffffc00038f780>] filename_lookup+0x38/0xf0
[<ffffffc000391180>] user_path_at_empty+0x78/0xd0
[<ffffffc0003911f4>] user_path_at+0x1c/0x28
[<ffffffc00037d4fc>] SyS_faccessat+0xb4/0x230
->d_lock trylock may failed many times because of concurrently
operations, and dput() may execute a long time.
Fix this by replacing cpu_relax() with cond_resched().
dput() used to be sleepable, so make it sleepable again
should be safe.
Cc: <stable@vger.kernel.org>
Signed-off-by: Wei Fang <fangwei1@huawei.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Allow filesystem to initialize dentry at allocation time.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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commit 6c51e513a3aa ("lookup_dcache(): lift d_alloc() into callers")
removed the need_lookup argument from lookup_dcache(), but the
comment was forgotten. Also it no longer allocates a new dentry
if nothing was found.
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Just several instances of overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull ceph fix from Ilya Dryomov:
"A fix for a long-standing bug in the incremental osdmap handling code
that caused misdirected requests, tagged for stable"
The tag is signed with a brand new key - Sage is on vacation and I
didn't anticipate this"
* tag 'ceph-for-4.7-rc8' of git://github.com/ceph/ceph-client:
libceph: apply new_state before new_up_client on incrementals
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pm_runtime_forbid was the wrong knob, this is the better one.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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In commit:
21cbc2822aa1 ("x86/mm/cpa: Unbreak populate_pgd(): stop trying to deallocate failed PUDs")
I intended to add this comment, but I failed at using git.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/242baf8612394f4e31216f96d13c4d2e9b90d1b7.1469293159.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Valdis Kletnieks bisected a boot failure back to this recent commit:
360cb4d15567 ("x86/mm/cpa: In populate_pgd(), don't set the PGD entry until it's populated")
I broke the case where a PUD table got allocated -- populate_pud()
would wander off a pgd_none entry and get lost. I'm not sure how
this survived my testing.
Fix the original issue in a much simpler way. The problem
was that, if we allocated a PUD table, failed to populate it, and
freed it, another CPU could potentially keep using the PGD entry we
installed (either by copying it via vmalloc_fault or by speculatively
caching it). There's a straightforward fix: simply leave the
top-level entry in place if this happens. This can't waste any
significant amount of memory -- there are at most 256 entries like
this systemwide and, as a practical matter, if we hit this failure
path repeatedly, we're likely to reuse the same page anyway.
For context, this is a reversion with this hunk added in:
if (ret < 0) {
+ /*
+ * Leave the PUD page in place in case some other CPU or thread
+ * already found it, but remove any useless entries we just
+ * added to it.
+ */
- unmap_pgd_range(cpa->pgd, addr,
+ unmap_pud_range(pgd_entry, addr,
addr + (cpa->numpages << PAGE_SHIFT));
return ret;
}
This effectively open-codes what the now-deleted unmap_pgd_range()
function used to do except that unmap_pgd_range() used to try to
free the page as well.
Reported-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Mike Krinkin <krinkin.m.u@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Link: http://lkml.kernel.org/r/21cbc2822aa18aa812c0215f4231dbf5f65afa7f.1469249789.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The kprobe enablement work has uncovered that changes made by
a guest to MDSCR_EL1 were propagated to the host when VHE was
enabled, leading to unexpected exception being delivered.
Moving this register to the list of registers that are always
context-switched fixes the issue.
Fixes: 9c6c35683286 ("arm64: KVM: VHE: Split save/restore of registers shared between guest and host")
Cc: stable@vger.kernel.org #4.6
Reported-by: Tirumalesh Chalamarla <Tirumalesh.Chalamarla@cavium.com>
Tested-by: Tirumalesh Chalamarla <Tirumalesh.Chalamarla@cavium.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
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add card Hauppauge WinTV-QuadHD-DVB to the list.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Some extra escape codes are needed to avoid Sphinx to not
identify the tags.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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References at the rst files for C functions generated via
kernel-doc should use :c:func:.
Fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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changeset b7e67f6c1bf7 ("doc-rst: linux_tv: supress lots of warnings")
were meant to touch only on media files, but it also touched
at this script by mistake. Revert such change.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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This struct is mentioned at the kAPI docbook. So, let's document
it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Better document a note on this header.
While here, better format dvb_ringbuffer_pkt_read_user()
to adjust it to CodingStyle.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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There are lots of undocumented stuff on this header.
Document them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Sphinx can't handle well typedefs. Change two typedef
occurrences, in order to cleanup some of such warnings.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Reorganize the order of the document, putting the chapters
on a more logical order and renaming some sections.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Now that the only remaining chapters at v4l2-framework are
the introduction ones, let' s rename the file.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Move the v4l2 clocks stuff from v4l2-framework to a separate
file and adds an attention that came from the v4l2-clk.h.
Note: as this is meant to be a temporary kAPI, and it is
used only by two drivers (soc_camera and em28xx), where
the first one is in deprecation process, it probably not
a worth effort to document its header.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Add cross-references with the kernel-doc functions/structs
and improve the markups.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Move the v4l2_fh specific content from v4l2-framework.rst
to v4l2-fh.rst.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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This header file was undocumented. Add documentation for it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Improve events documentation by adding cross references,
sub-titles and other markup elements.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Several functions weren't documented. Document them all.
While here, makes checkpatch.pl happy.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Move the v4l2 event-specific text from v4l2-framework.rst
to v4l2-event.rst. That helps to keep the text together with
the functions it describes, and makes easier to identify
documentation gaps.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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As we merged the videobuf chapter at the kABI section, and it
is a way more complete, just remove the small videobuf chapter
that came from framework.txt.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Add cross-references for the functions/structs and add
the markup tags to improve its display.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Move the documentation for video device node creation to
a separate file.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Add documentation for v4l2-dev.h, and put it at v4l2-framework.rst,
where struct video_device is currently documented.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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The v4l2_subdev reference was using the wrong tag. Fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Not all functions at v4l2-common.h are documented. Add
documentation for some other ones.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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There are some subdev-specific functions at v4l2-common.h
that are mentioned at v4l2-subdev.rst.
Document them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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The two new sections were missing cross-references, and had
some other minor issues with the markups. Add such things.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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