Merge 5.9-rc8 into staging-next

We need the IIO fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge 5.9-rc8 into usb-next

We need the USB fixes in here as well for testing.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge tag 'v5.9-rc7' into patchwork

Linux 5.9-rc7

* tag 'v5.9-rc7': (683 commits)
Linux 5.9-rc7
mm/thp: Split huge pmds/puds if they're pinned when fork()
mm: Do early cow for pinned pages du

Merge tag 'v5.9-rc7' into patchwork

Linux 5.9-rc7

* tag 'v5.9-rc7': (683 commits)
Linux 5.9-rc7
mm/thp: Split huge pmds/puds if they're pinned when fork()
mm: Do early cow for pinned pages during fork() for ptes
mm/fork: Pass new vma pointer into copy_page_range()
mm: Introduce mm_struct.has_pinned
mm: validate pmd after splitting
mm: don't rely on system state to detect hot-plug operations
mm: replace memmap_context by meminit_context
arch/x86/lib/usercopy_64.c: fix __copy_user_flushcache() cache writeback
lib/memregion.c: include memregion.h
lib/string.c: implement stpcpy
mm/migrate: correct thp migration stats
mm/gup: fix gup_fast with dynamic page table folding
mm: memcontrol: fix missing suffix of workingset_restore
mm, THP, swap: fix allocating cluster for swapfile by mistake
mm: slab: fix potential double free in ___cache_free
Documentation/llvm: Fix clang target examples
io_uring: ensure async buffered read-retry is setup properly
KVM: SVM: Add a dedicated INVD intercept routine
io_uring: don't unconditionally set plug->nowait = true
...

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Merge remote-tracking branch 'torvalds/master' into perf/core

To pick up fixes and get v5.10 development in sync with the main kernel
sources.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.c

Merge remote-tracking branch 'torvalds/master' into perf/core

To pick up fixes and get v5.10 development in sync with the main kernel
sources.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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Merge tag 'spi-fix-v5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
"A small collection of driver specific fixes, the fsl-espi and bcm-qspi
c

Merge tag 'spi-fix-v5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
"A small collection of driver specific fixes, the fsl-espi and bcm-qspi
changes in particular have been causing breakage for users"

* tag 'spi-fix-v5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: bcm-qspi: Fix probe regression on iProc platforms
spi: fsl-dspi: fix use-after-free in remove path
spi: fsl-espi: Only process interrupts for expected events
spi: bcm2835: Make polling_limit_us static
spi: spi-fsl-dspi: use XSPI mode instead of DMA for DPAA2 SoCs

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spi: bcm2835: Make polling_limit_us static

This eliminates the following sparse warning:

drivers/spi/spi-bcm2835.c:78:14: warning: symbol 'polling_limit_us' was
not declared. Should it be static?

spi: bcm2835: Make polling_limit_us static

This eliminates the following sparse warning:

drivers/spi/spi-bcm2835.c:78:14: warning: symbol 'polling_limit_us' was
not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200912072211.602735-1-yanaijie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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spi: bcm2835: Make polling_limit_us static

This eliminates the following sparse warning:

drivers/spi/spi-bcm2835.c:78:14: warning: symbol 'polling_limit_us' was
not declared. Should it be static?

spi: bcm2835: Make polling_limit_us static

This eliminates the following sparse warning:

drivers/spi/spi-bcm2835.c:78:14: warning: symbol 'polling_limit_us' was
not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200912072211.602735-1-yanaijie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Merge drm/drm-next into drm-intel-next-queued

Sync drm-intel-gt-next here so we can have an unified fixes flow.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Merge branch 'for-linus' into for-next

Back-merge to apply the tasklet conversion patches that are based
on the already applied tasklet API changes on 5.9-rc4.

Signed-off-by: Takashi Iwai <tiwai@su

Merge branch 'for-linus' into for-next

Back-merge to apply the tasklet conversion patches that are based
on the already applied tasklet API changes on 5.9-rc4.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

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spi: bcm2835: Simplify with dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe(). Less code and the error value gets printed.

Signed-off-by: Krzysztof K

spi: bcm2835: Simplify with dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe(). Less code and the error value gets printed.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20200901152713.18629-4-krzk@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

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Merge branch 'topic/tasklet-convert' into for-linus

Pull tasklet API conversions.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

Merge branch 'master' into for-next

Sync with Linus' branch in order to be able to apply fixups
of more recent patches.

Merge tag 'v5.9-rc2' into regulator-5.9

Linux 5.9-rc2

Merge tag 'v5.9-rc2' into asoc-5.9

Linux 5.9-rc2

Merge tag 'v5.9-rc2' into drm-misc-fixes

Backmerge requested by Tomi for a fix to omap inconsistent
locking state issue, and because we need at least v5.9-rc2 now.

Signed-off-by: Maarten Lankhorst

Merge tag 'v5.9-rc2' into drm-misc-fixes

Backmerge requested by Tomi for a fix to omap inconsistent
locking state issue, and because we need at least v5.9-rc2 now.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

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Merge v5.9-rc1 into drm-misc-next

Sam needs 5.9-rc1 to have dev_err_probe in to merge some patches.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Mgerge remote-tracking branch 'torvalds/master' into perf/core

To sync headers, for instance, in this case tools/perf was ahead of
upstream till Linus merged tip/perf/core to get the
PERF_RECORD_TEX

Mgerge remote-tracking branch 'torvalds/master' into perf/core

To sync headers, for instance, in this case tools/perf was ahead of
upstream till Linus merged tip/perf/core to get the
PERF_RECORD_TEXT_POKE changes:

Warning: Kernel ABI header at 'tools/include/uapi/linux/perf_event.h' differs from latest version at 'include/uapi/linux/perf_event.h'
diff -u tools/include/uapi/linux/perf_event.h include/uapi/linux/perf_event.h

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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Merge tag 'spi-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
"A fairly quiet release for SPI, nothing really going on in the core
although t

Merge tag 'spi-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
"A fairly quiet release for SPI, nothing really going on in the core
although there's been quite a bit of driver related activity.

This includes the addition of some shared code in drivers/memory for
the Renesas RPC-IF which is used by a newly added SPI driver, the
memory subsystem doesn't seem to have a fixed maintainer at the minute
and this seemed like the most sensible way to get that hardware
supported.

- Quite a few cleanups and optimizations for the Altera, Qualcomm
GENI, sun6i and lantiq drivers.

- Several more GPIO descriptor conversions.

- Move the Cadence QuadSPI driver from drivers/mtd to drivers/spi.

- New support for Mediatek MT8192 and Renesas RPC-IF, R8A7742 and
R8A774e1"

* tag 'spi-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (119 commits)
dt-bindings: lpspi: New property in document DT bindings for LPSPI
spi: lpspi: fix using CS discontinuously on i.MX8DXLEVK
spi: lpspi: remove unused fsl_lpspi->chipselect
spi: lpspi: Fix kernel warning dump when probe fail after calling spi_register
spi: rockchip: Fix error in SPI slave pio read
spi: rockchip: Support 64-location deep FIFOs
spi: rockchip: Config spi rx dma burst size depend on xfer length
spi: spi-topcliff-pch: drop call to wakeup-disable
spi: spidev: Align buffers for DMA
spi: correct kernel-doc inconsistency
spi: sun4i: update max transfer size reported
spi: imx: enable runtime pm support
spi: update bindings for MT8192 SoC
spi: mediatek: add spi support for mt8192 IC
spi: Add bindings for Lightning Mountain SoC
spi: lantiq: Add support to Lightning Mountain SoC
spi: lantiq: Move interrupt configuration to SoC specific data structure
spi: lantiq: Add fifo size bit mask in SoC specific data structure
spi: lantiq: Add support to acknowledge interrupt
spi: lantiq: Move interrupt control register offesets to SoC specific data structure
...

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Merge branch 'for-next' into for-linus

Merge remote-tracking branch 'spi/for-5.9' into spi-next

Merge series "spi: bcm2835/bcm2835aux: support effective_speed_hz" from Marc Kleine-Budde <mkl@pengutronix.de>:

Hello,

I've picked up and forward ported Martin Sperl's patches which add support for

Merge series "spi: bcm2835/bcm2835aux: support effective_speed_hz" from Marc Kleine-Budde <mkl@pengutronix.de>:

Hello,

I've picked up and forward ported Martin Sperl's patches which add support for
effective_speed_hz to the SPI controllers found on all raspberry pi models.

See the following patch, which adds this feature to the SPI core, for more
information:

5d7e2b5ed585 spi: core: allow reporting the effectivly used speed_hz for a transfer

regards,
Marc

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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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spi: bcm2835: support effective_speed_hz

Setting spi_transfer->effective_speed_hz in transfer_one so that
it can get used in cs_change_delay configured with delay as a muliple
of SPI clock cycles.

spi: bcm2835: support effective_speed_hz

Setting spi_transfer->effective_speed_hz in transfer_one so that
it can get used in cs_change_delay configured with delay as a muliple
of SPI clock cycles.

Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://lore.kernel.org/r/20200709074120.110069-2-mkl@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>

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Merge series "spi: bcm2835: Interrupt-handling optimisations" from Robin Murphy <robin.murphy@arm.com>:

Hi all,

Although Florian was concerned about a trivial inline check to deal with
shared IRQs

Merge series "spi: bcm2835: Interrupt-handling optimisations" from Robin Murphy <robin.murphy@arm.com>:

Hi all,

Although Florian was concerned about a trivial inline check to deal with
shared IRQs adding overhead, the reality is that it would be so small as
to not be worth even thinking about unless the driver was already tuned
to squeeze out every last cycle. And a brief look over the code shows
that that clearly isn't the case.

This is an example of some of the easy low-hanging fruit that jumps out
just from code inspection. Based on disassembly and ARM1176 cycle
timings, patch #2 should save the equivalent of 2-3 shared interrupt
checks off the critical path in all cases, and patch #3 possibly up to
about 100x more. I don't have any means to test these patches, let alone
measure performance, so they're only backed by the principle that less
code - and in particular fewer memory accesses - is almost always
better.

There is almost certainly a *lot* more to be had from careful use of
relaxed I/O accessors, not doing a read-modify-write of CS at every
reset, tweaking the loops further to avoid unnecessary writebacks to
variables, and so on. However since I'm not invested in this personally
I'm not going to pursue it any further; I'm throwing these patches out
as more of a demonstration to back up my original drive-by review
comments, so if anyone want to pick them up and run with them then
please do so.

Robin.

Robin Murphy (3):
spi: bcm3835: Tidy up bcm2835_spi_reset_hw()
spi: bcm2835: Micro-optimise IRQ handler
spi: bcm2835: Micro-optimise FIFO loops

drivers/spi/spi-bcm2835.c | 45 +++++++++++++++++++--------------------
1 file changed, 22 insertions(+), 23 deletions(-)

--
2.23.0.dirty

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spi: bcm2835: Micro-optimise FIFO loops

The blind and counted loops are always called with nonzero count, so
convert them to do-while loops that lead to slightly more efficient
code generation. With

spi: bcm2835: Micro-optimise FIFO loops

The blind and counted loops are always called with nonzero count, so
convert them to do-while loops that lead to slightly more efficient
code generation. With GCC 8.3 this shaves off 1-2 instructions per
iteration in each case.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/9242863077acf9a64e4b3720e479855b88d19e82.1592261248.git.robin.murphy@arm.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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spi: bcm2835: Micro-optimise IRQ handler

The IRQ handler only needs the struct spi_controller for the sake of
the completion at the end of a transfer. Passing the struct bcm2835_spi
directly as the

spi: bcm2835: Micro-optimise IRQ handler

The IRQ handler only needs the struct spi_controller for the sake of
the completion at the end of a transfer. Passing the struct bcm2835_spi
directly as the IRQ data allows that level of indirection to be pushed
into the completion path for the reverse lookup, and avoided entirely
in all other cases.

This saves one explicit load in the critical path, plus (for a GCC 8.3
build) two registers worth of stack frame overhead.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/6b401cb521539caffab21f05b4c8cba6c9d27c6e.1592261248.git.robin.murphy@arm.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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