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blockmask is unused if ASSERTs are disabled.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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Pull MD updates from Shaohua Li:
"Several patches from Guoqing fixing md-cluster bugs and several
patches from Heinz fixing dm-raid bugs"
* tag 'md/4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
md-cluster: check the return value of process_recvd_msg
md-cluster: gather resync infos and enable recv_thread after bitmap is ready
md: set MD_CHANGE_PENDING in a atomic region
md: raid5: add prerequisite to run underneath dm-raid
md: raid10: add prerequisite to run underneath dm-raid
md: md.c: fix oops in mddev_suspend for raid0
md-cluster: fix ifnullfree.cocci warnings
md-cluster/bitmap: unplug bitmap to sync dirty pages to disk
md-cluster/bitmap: fix wrong page num in bitmap_file_clear_bit and bitmap_file_set_bit
md-cluster/bitmap: fix wrong calcuation of offset
md-cluster: sync bitmap when node received RESYNCING msg
md-cluster: always setup in-memory bitmap
md-cluster: wakeup thread if activated a spare disk
md-cluster: change array_sectors and update size are not supported
md-cluster: fix locking when node joins cluster during message broadcast
md-cluster: unregister thread if err happened
md-cluster: wake up thread to continue recovery
md-cluser: make resync_finish only called after pers->sync_request
md-cluster: change resync lock from asynchronous to synchronous
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU updates from Joerg Roedel:
"The updates include:
- rate limiting for the VT-d fault handler
- remove statistics code from the AMD IOMMU driver. It is unused and
should be replaced by something more generic if needed
- per-domain pagesize-bitmaps in IOMMU core code to support systems
with different types of IOMMUs
- support for ACPI devices in the AMD IOMMU driver
- 4GB mode support for Mediatek IOMMU driver
- ARM-SMMU updates from Will Deacon:
- support for 64k pages with SMMUv1 implementations (e.g MMU-401)
- remove open-coded 64-bit MMIO accessors
- initial support for 16-bit VMIDs, as supported by some ThunderX
SMMU implementations
- a couple of errata workarounds for silicon in the field
- various fixes here and there"
* tag 'iommu-updates-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (44 commits)
iommu/arm-smmu: Use per-domain page sizes.
iommu/amd: Remove statistics code
iommu/dma: Finish optimising higher-order allocations
iommu: Allow selecting page sizes per domain
iommu: of: enforce const-ness of struct iommu_ops
iommu: remove unused priv field from struct iommu_ops
iommu/dma: Implement scatterlist segment merging
iommu/arm-smmu: Clear cache lock bit of ACR
iommu/arm-smmu: Support SMMUv1 64KB supplement
iommu/arm-smmu: Decouple context format from kernel config
iommu/arm-smmu: Tidy up 64-bit/atomic I/O accesses
io-64-nonatomic: Add relaxed accessor variants
iommu/arm-smmu: Work around MMU-500 prefetch errata
iommu/arm-smmu: Convert ThunderX workaround to new method
iommu/arm-smmu: Differentiate specific implementations
iommu/arm-smmu: Workaround for ThunderX erratum #27704
iommu/arm-smmu: Add support for 16 bit VMID
iommu/amd: Move get_device_id() and friends to beginning of file
iommu/amd: Don't use IS_ERR_VALUE to check integer values
iommu/amd: Signedness bug in acpihid_device_group()
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Currently faults are protected against truncate by filesystem specific
i_mmap_sem and page lock in case of hole page. Cow faults are protected
DAX radix tree entry locking. So there's no need for i_mmap_lock in DAX
code. Remove it.
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
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When doing cow faults, we cannot directly fill in PTE as we do for other
faults as we rely on generic code to do proper accounting of the cowed page.
We also have no page to lock to protect against races with truncate as
other faults have and we need the protection to extend until the moment
generic code inserts cowed page into PTE thus at that point we have no
protection of fs-specific i_mmap_sem. So far we relied on using
i_mmap_lock for the protection however that is completely special to cow
faults. To make fault locking more uniform use DAX entry lock instead.
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
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Currently DAX page fault locking is racy.
CPU0 (write fault) CPU1 (read fault)
__dax_fault() __dax_fault()
get_block(inode, block, &bh, 0) -> not mapped
get_block(inode, block, &bh, 0)
-> not mapped
if (!buffer_mapped(&bh))
if (vmf->flags & FAULT_FLAG_WRITE)
get_block(inode, block, &bh, 1) -> allocates blocks
if (page) -> no
if (!buffer_mapped(&bh))
if (vmf->flags & FAULT_FLAG_WRITE) {
} else {
dax_load_hole();
}
dax_insert_mapping()
And we are in a situation where we fail in dax_radix_entry() with -EIO.
Another problem with the current DAX page fault locking is that there is
no race-free way to clear dirty tag in the radix tree. We can always
end up with clean radix tree and dirty data in CPU cache.
We fix the first problem by introducing locking of exceptional radix
tree entries in DAX mappings acting very similarly to page lock and thus
synchronizing properly faults against the same mapping index. The same
lock can later be used to avoid races when clearing radix tree dirty
tag.
Reviewed-by: NeilBrown <neilb@suse.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
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Currently we forbid page_cache_tree_insert() to replace exceptional radix
tree entries for DAX inodes. However to make DAX faults race free we will
lock radix tree entries and when hole is created, we need to replace
such locked radix tree entry with a hole page. So modify
page_cache_tree_insert() to allow that.
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
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We will use lowest available bit in the radix tree exceptional entry for
locking of the entry. Define it. Also clean up definitions of DAX entry
type bits in DAX exceptional entries to use defined constants instead of
hardcoding numbers and cleanup checking of these bits to not rely on how
other bits in the entry are set.
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
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Currently the handling of huge pages for DAX is racy. For example the
following can happen:
CPU0 (THP write fault) CPU1 (normal read fault)
__dax_pmd_fault() __dax_fault()
get_block(inode, block, &bh, 0) -> not mapped
get_block(inode, block, &bh, 0)
-> not mapped
if (!buffer_mapped(&bh) && write)
get_block(inode, block, &bh, 1) -> allocates blocks
truncate_pagecache_range(inode, lstart, lend);
dax_load_hole();
This results in data corruption since process on CPU1 won't see changes
into the file done by CPU0.
The race can happen even if two normal faults race however with THP the
situation is even worse because the two faults don't operate on the same
entries in the radix tree and we want to use these entries for
serialization. So make THP support in DAX code depend on CONFIG_BROKEN
for now.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
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Currently dax_pmd_fault() decides to fill a PMD-sized hole only if
returned buffer has BH_Uptodate set. However that doesn't get set for
any mapping buffer so that branch is actually a dead code. The
BH_Uptodate check doesn't make any sense so just remove it.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
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The critical clock handling in __clk_core_init isn't taking the enable lock
before calling clk_core_enable, which in turns triggers the warning in the
lockdep_assert_held call in that function when lockep is enabled.
Add the calls to clk_enable_lock/unlock to make sure it doesn't happen.
Fixes: 32b9b1096186 ("clk: Allow clocks to be marked as CRITICAL")
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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PCI-Express spec says that reading 4 bytes at offset 100h should return
zero if there is no extended capability so VFIO reads this dword to
know if there are extended capabilities.
However it is not always possible to access the extended space so
generic PCI code in pci_cfg_space_size_ext() checks if
pci_read_config_dword() can read beyond 100h and if the check fails,
it sets the config space size to 100h.
VFIO does its own extended capabilities check by reading at offset 100h
which may produce 0xffffffff which VFIO treats as the extended config
space presense and calls vfio_ecap_init() which fails to parse
capabilities (which is expected) but right before the exit, it writes
zero at offset 100h which is beyond the buffer allocated for
vdev->vconfig (which is 256 bytes) which leads to random memory
corruption.
This makes VFIO only check for the extended capabilities if
the discovered config size is more than 256 bytes.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"This time was again a relatively calm development cycle; most of
updates are about drivers, and no radical changes are seen in any core
code. Here are some highlights:
ALSA core:
- Continued hardening of ALSA hrtimer
- A few leak fixes in timer interface
- Fix poll error handling in PCM and compress
- Add error propagation in compress API
- Removal of dead rtctimer driver
HD-audio:
- Native ELD notify support for i915 HDMI
- Realtek ALC234 & co support
- Code refactoring to standardize chmap support
- Continued development for SKL HDMI core support
Firewire:
- Apply delayed card registration to all drivers
- Improved / stabilized the handling of PCM stream start / stop
- Add tracepoints to dump a part of isochronous packet data
- Fixed incoming/outgoing packet parameter usages
- Add support for M-Audio profire series
USB-audio:
- Fixes for UAC2 clock source
- SS+ support
- Workaround for oft-seen repeated sample rate read errors
ASoC:
- Further slow progress on the topology code
- Substantial updates and improvements for the da7219, es8328,
fsl-ssi, Intel and rcar drivers.
- Compress error handling in WM ADSP driver"
* tag 'sound-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (177 commits)
ALSA: firewire-lib: change a member of event structure to suppress sparse wanings to bool type
sound: oss: Use setup_timer and mod_timer.
ASoC: hdac_hdmi: Remove the unused 'timeout' variable
ASoC: fsl_ssi: Fix channel slipping on capture (or playback) restart in full duplex.
ASoC: fsl_ssi: Fix channel slipping in Playback at startup
ASoC: fsl_ssi: Fix samples being dropped at Playback startup
ASoC: fsl_ssi: Save a dev reference for dev_err() purpose.
ASoC: fsl_ssi: The IPG/5 limitation concerns the bitclk, not the sysclk.
ASoC: fsl_ssi: Real hardware channels max number is 32
ASoC: pcm5102a: Add support for PCM5102A codec
ASoC: hdac_hdmi: add link management
ASoC: Intel: Skylake: add link management
ALSA: hdac: add link pm and ref counting
ALSA: au88x0: Fix zero clear of stream->resources
ASoC: rt298: Add DMI match for Broxton-P reference platform
ASoC: rt298: fix null deref on acpi driver data
ASoC: dapm: deprecate MICBIAS widget type
ALSA: firewire-lib: drop skip argument from helper functions to queue a packet
ALSA: firewire-lib: add context information to tracepoints
ALSA: firewire-lib: permit to flush queued packets only in process context for better PCM period granularity
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Refine PCI support check in pcibios_init() (Adrian-Ken Rueegsegger)
- Provide common functions for ECAM mapping (Jayachandran C)
- Allow all PCIe services on non-ACPI host bridges (Jon Derrick)
- Remove return values from pcie_port_platform_notify() and relatives (Jon Derrick)
- Widen portdrv service type from 4 bits to 8 bits (Keith Busch)
- Add Downstream Port Containment portdrv service type (Keith Busch)
- Add Downstream Port Containment driver (Keith Busch)
Resource management:
- Identify Enhanced Allocation (EA) BAR Equivalent resources in sysfs (Alex Williamson)
- Supply CPU physical address (not bus address) to iomem_is_exclusive() (Bjorn Helgaas)
- alpha: Call iomem_is_exclusive() for IORESOURCE_MEM, but not IORESOURCE_IO (Bjorn Helgaas)
- Mark Broadwell-EP Home Agent 1 as having non-compliant BARs (Prarit Bhargava)
- Disable all BAR sizing for devices with non-compliant BARs (Prarit Bhargava)
- Move PCI I/O space management from OF to PCI core code (Tomasz Nowicki)
PCI device hotplug:
- acpiphp_ibm: Avoid uninitialized variable reference (Dan Carpenter)
- Use cached copy of PCI_EXP_SLTCAP_HPC bit (Lukas Wunner)
Virtualization:
- Mark Intel i40e NIC INTx masking as broken (Alex Williamson)
- Reverse standard ACS vs device-specific ACS enabling (Alex Williamson)
- Work around Intel Sunrise Point PCH incorrect ACS capability (Alex Williamson)
IOMMU:
- Add pci_add_dma_alias() to abstract implementation (Bjorn Helgaas)
- Move informational printk to pci_add_dma_alias() (Bjorn Helgaas)
- Add support for multiple DMA aliases (Jacek Lawrynowicz)
- Add DMA alias quirk for mic_x200_dma (Jacek Lawrynowicz)
Thunderbolt:
- Fix double free of drom buffer (Andreas Noever)
- Add Intel Thunderbolt device IDs (Lukas Wunner)
- Fix typos and magic number (Lukas Wunner)
- Support 1st gen Light Ridge controller (Lukas Wunner)
Generic host bridge driver:
- Use generic ECAM API (Jayachandran C)
Cavium ThunderX host bridge driver:
- Don't clobber read-only bits in bridge config registers (David Daney)
- Use generic ECAM API (Jayachandran C)
Freescale i.MX6 host bridge driver:
- Use enum instead of bool for variant indicator (Andrey Smirnov)
- Implement reset sequence for i.MX6+ (Andrey Smirnov)
- Factor out ref clock enable (Bjorn Helgaas)
- Add initial imx6sx support (Christoph Fritz)
- Add reset-gpio-active-high boolean property to DT (Petr Štetiar)
- Add DT property for link gen, default to Gen1 (Tim Harvey)
- dts: Specify imx6qp version of PCIe core (Andrey Smirnov)
- dts: Fix PCIe reset GPIO polarity on Toradex Apalis Ixora (Petr Štetiar)
Marvell Armada host bridge driver:
- add DT binding for Marvell Armada 7K/8K PCIe controller (Thomas Petazzoni)
- Add driver for Marvell Armada 7K/8K PCIe controller (Thomas Petazzoni)
Marvell MVEBU host bridge driver:
- Constify mvebu_pcie_pm_ops structure (Jisheng Zhang)
- Use SET_NOIRQ_SYSTEM_SLEEP_PM_OPS for mvebu_pcie_pm_ops (Jisheng Zhang)
Microsoft Hyper-V host bridge driver:
- Report resources release after stopping the bus (Vitaly Kuznetsov)
- Add explicit barriers to config space access (Vitaly Kuznetsov)
Renesas R-Car host bridge driver:
- Select PCI_MSI_IRQ_DOMAIN (Arnd Bergmann)
Synopsys DesignWare host bridge driver:
- Remove incorrect RC memory base/limit configuration (Gabriele Paoloni)
- Move Root Complex setup code to dw_pcie_setup_rc() (Jisheng Zhang)
TI Keystone host bridge driver:
- Add error IRQ handler (Murali Karicheri)
- Remove unnecessary goto statement (Murali Karicheri)
Miscellaneous:
- Fix spelling errors (Colin Ian King)"
* tag 'pci-v4.7-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (48 commits)
PCI: Disable all BAR sizing for devices with non-compliant BARs
x86/PCI: Mark Broadwell-EP Home Agent 1 as having non-compliant BARs
PCI: Identify Enhanced Allocation (EA) BAR Equivalent resources in sysfs
PCI, of: Move PCI I/O space management to PCI core code
PCI: generic, thunder: Use generic ECAM API
PCI: Provide common functions for ECAM mapping
PCI: hv: Add explicit barriers to config space access
PCI: Use cached copy of PCI_EXP_SLTCAP_HPC bit
PCI: Add Downstream Port Containment driver
PCI: Add Downstream Port Containment portdrv service type
PCI: Widen portdrv service type from 4 bits to 8 bits
PCI: designware: Remove incorrect RC memory base/limit configuration
PCI: hv: Report resources release after stopping the bus
ARM: dts: imx6qp: Specify imx6qp version of PCIe core
PCI: imx6: Implement reset sequence for i.MX6+
PCI: imx6: Use enum instead of bool for variant indicator
PCI: thunder: Don't clobber read-only bits in bridge config registers
thunderbolt: Fix double free of drom buffer
PCI: rcar: Select PCI_MSI_IRQ_DOMAIN
PCI: armada: Add driver for Marvell Armada 7K/8K PCIe controller
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"This kernel cycle was quite calm when it comes to pin control and
there is really just one major change, and that is the introduction of
devm_pinctrl_register() managed resources.
Apart from that linear development, details below.
Core changes:
- Add the devm_pinctrl_register() API and switch all applicable
drivers to use it, saving lots of lines of code all over the place.
New drivers:
- driver for the Broadcom NS2 SoC
- subdriver for the PXA25x SoCs
- subdriver for the AMLogic Meson GXBB SoC
Driver improvements:
- the Intel Baytrail driver now properly supports pin control
- Nomadik, Rockchip, Broadcom BCM2835 support the .get_direction()
callback in the GPIO portions
- continued development and stabilization of several SH-PFC SoC
subdrivers: r8a7795, r8a7790, r8a7794 etc"
* tag 'pinctrl-v4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (85 commits)
Revert "pinctrl: tegra: avoid parked_reg and parked_bank"
pinctrl: meson: Fix eth_tx_en bit index
pinctrl: tegra: avoid parked_reg and parked_bank
pinctrl: tegra: Correctly check the supported configuration
pinctrl: amlogic: Add support for Amlogic Meson GXBB SoC
pinctrl: rockchip: fix pull setting error for rk3399
pinctrl: stm32: Implement .pin_config_dbg_show()
pinctrl: nomadik: hide nmk_gpio_get_mode when unused
pinctrl: ns2: rename pinctrl_utils_dt_free_map
pinctrl: at91: Merge clk_prepare and clk_enable into clk_prepare_enable
pinctrl: at91: Make at91_gpio_template const
pinctrl: baytrail: fix some error handling in debugfs
pinctrl: ns2: add pinmux driver support for Broadcom NS2 SoC
pinctrl: sirf/atlas7: trivial fix of spelling mistake on flagged
pinctrl: sh-pfc: Kill unused variable in sh_pfc_remove()
pinctrl: nomadik: implement .get_direction()
pinctrl: nomadik: use BIT() with offsets consequently
pinctrl: exynos5440: Use off-stack memory for pinctrl_gpio_range
pinctrl: zynq: Use devm_pinctrl_register() for pinctrl registration
pinctrl: u300: Use devm_pinctrl_register() for pinctrl registration
...
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Antonio Quartulli says:
====================
During the Wireless Battle Mesh v9 in Porto (PT) at the beginning of
May, we managed to uncover and fix some important bugs in our
new B.A.T.M.A.N. V algorithm. These are the fixes we came up with
together with others that I collected in the past weeks:
- avoid potential crash due to NULL pointer dereference in
B.A.T.M.A.N. V routine when a neigh_ifinfo object is not found, by
Sven Eckelmann
- avoid use-after-free of skb when counting outgoing bytes, by Florian
Westphal
- fix neigh_ifinfo object reference counting imbalance when using
B.A.T.M.A.N. V, by Sven Eckelmann. Such imbalance may lead to the
impossibility of releasing the related netdev object on shutdown
- avoid invalid memory access in case of error while allocating
bcast_own_sum when a new hard-interface is added, by Sven Eckelmann
- ensure originator address is updated in OMG/ELP packet content upon
primary interface address change, by Antonio Quartulli
- fix integer overflow when computing TQ metric (B.A.T.M.A.N. IV), by
Sven Eckelmann
- avoid race condition while adding new neigh_node which would result
in having two objects mapping to the same physical neighbour, by
Linus Lüssing
- ensure originator address is initialized in ELP packet content on
secondary interfaces, by Marek Lindner
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is a patch to clean checkpatch warnings and errors
in the Space.c file.
Clean up the following warnings and errors.
WARNING :
* Block comments use * on subsequent lines
* Missing a blank line after declarations
* networking block comments don't use an empty /* line, use /*
* please, no space before tabs
* please, no spaces at the start of a line
* line over 80 characters
ERROR :
* code indent should use tabs where possible
* space prohibited after that open parenthesis '('
Signed-off-by: Amit Ghadge <amitg.b14@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull dmaengine updates from Vinod Koul:
"This time round the update brings in following changes:
- new tegra driver for ADMA device
- support for Xilinx AXI Direct Memory Access Engine and Xilinx AXI
Central Direct Memory Access Engine and few updates to this driver
- new cyclic capability to sun6i and few updates
- slave-sg support in bcm2835
- updates to many drivers like designware, hsu, mv_xor, pxa, edma,
qcom_hidma & bam"
* tag 'dmaengine-4.7-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (84 commits)
dmaengine: ioatdma: disable relaxed ordering for ioatdma
dmaengine: of_dma: approximate an average distribution
dmaengine: core: Use IS_ENABLED() instead of checking for built-in or module
dmaengine: edma: Re-evaluate errors when ccerr is triggered w/o error event
dmaengine: qcom_hidma: add support for object hierarchy
dmaengine: qcom_hidma: add debugfs hooks
dmaengine: qcom_hidma: implement lower level hardware interface
dmaengine: vdma: Add clock support
Documentation: DT: vdma: Add clock support for dmas
dmaengine: vdma: Add config structure to differentiate dmas
MAINTAINERS: Update Tegra DMA maintainers
dmaengine: tegra-adma: Add support for Tegra210 ADMA
Documentation: DT: Add binding documentation for NVIDIA ADMA
dmaengine: vdma: Add Support for Xilinx AXI Central Direct Memory Access Engine
Documentation: DT: vdma: update binding doc for AXI CDMA
dmaengine: vdma: Add Support for Xilinx AXI Direct Memory Access Engine
Documentation: DT: vdma: update binding doc for AXI DMA
dmaengine: vdma: Rename xilinx_vdma_ prefix to xilinx_dma
dmaengine: slave means at least one of DMA_SLAVE, DMA_CYCLIC
dmaengine: mv_xor: Allow selecting mv_xor for mvebu only compatible SoC
...
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Eric Dumazet says:
====================
net: block BH in TCP callbacks
Four layers using TCP stack were assuming sk_callback_lock could
be locked using read_lock() in their handlers because TCP stack
was running with BH disabled.
This is no longer the case. Since presumably the rest could
also depend on BH being disabled, just use read_lock_bh().
Then each layer might consider switching to RCU protection
and no longer depend on BH.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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TCP stack can now run from process context.
Use read_lock_bh(&sk->sk_callback_lock) variant to restore previous
assumption.
Fixes: 5413d1babe8f ("net: do not block BH while processing socket backlog")
Fixes: d41a69f1d390 ("tcp: make tcp_sendmsg() aware of socket backlog")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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TCP stack can now run from process context.
Use read_lock_bh(&sk->sk_callback_lock) variant to restore previous
assumption.
Fixes: 5413d1babe8f ("net: do not block BH while processing socket backlog")
Fixes: d41a69f1d390 ("tcp: make tcp_sendmsg() aware of socket backlog")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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TCP stack can now run from process context.
Use read_lock_bh() variant to restore previous assumption.
Fixes: 5413d1babe8f ("net: do not block BH while processing socket backlog")
Fixes: d41a69f1d390 ("tcp: make tcp_sendmsg() aware of socket backlog")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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iscsi_sw_tcp_data_ready() and iscsi_sw_tcp_state_change() were
using read_lock(&sk->sk_callback_lock) which is fine if caller
disabled BH.
TCP stack no longer has this requirement and can run from
process context.
Use read_lock_bh() variant to restore previous assumption.
Ideally this code could use RCU instead...
Fixes: 5413d1babe8f ("net: do not block BH while processing socket backlog")
Fixes: d41a69f1d390 ("tcp: make tcp_sendmsg() aware of socket backlog")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: Venkatesh Srinivas <venkateshs@google.com>
Acked-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-kconfig
Pull localmodconfig updates from Steven Rostedt.
"Benjamin Poirier added some minor fixes and clean ups to
localmodconfig.
One is a fix for making sure that module signing still works when
coming from a different environment. If original keys are not found
it will warn and reset the keys to their default value"
* tag 'localmodconfig-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-kconfig:
localmodconfig: Fix whitespace repeat count after "tristate"
localmodconfig: Reset certificate paths
localmodconfig: Add missing $ to reference a variable
localmodconfig: Fix parsing of "help" text
localmodconfig: Recognize more keywords that end a menu entry
localmodconfig: Fix parsing of Kconfig "source" statements
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(!count || count < 4) is always true.
So let's remove the coding which is dead at least since 2005.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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(a && a > 0) is equivalent to (a > 0).
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Only dereference variable self after checking it is not NULL.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If DEBUG is defined, a superfluous closing brace
is introduced.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull KVM updates from Paolo Bonzini:
"Small release overall.
x86:
- miscellaneous fixes
- AVIC support (local APIC virtualization, AMD version)
s390:
- polling for interrupts after a VCPU goes to halted state is now
enabled for s390
- use hardware provided information about facility bits that do not
need any hypervisor activity, and other fixes for cpu models and
facilities
- improve perf output
- floating interrupt controller improvements.
MIPS:
- miscellaneous fixes
PPC:
- bugfixes only
ARM:
- 16K page size support
- generic firmware probing layer for timer and GIC
Christoffer Dall (KVM-ARM maintainer) says:
"There are a few changes in this pull request touching things
outside KVM, but they should all carry the necessary acks and it
made the merge process much easier to do it this way."
though actually the irqchip maintainers' acks didn't make it into the
patches. Marc Zyngier, who is both irqchip and KVM-ARM maintainer,
later acked at http://mid.gmane.org/573351D1.4060303@arm.com ('more
formally and for documentation purposes')"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (82 commits)
KVM: MTRR: remove MSR 0x2f8
KVM: x86: make hwapic_isr_update and hwapic_irr_update look the same
svm: Manage vcpu load/unload when enable AVIC
svm: Do not intercept CR8 when enable AVIC
svm: Do not expose x2APIC when enable AVIC
KVM: x86: Introducing kvm_x86_ops.apicv_post_state_restore
svm: Add VMEXIT handlers for AVIC
svm: Add interrupt injection via AVIC
KVM: x86: Detect and Initialize AVIC support
svm: Introduce new AVIC VMCB registers
KVM: split kvm_vcpu_wake_up from kvm_vcpu_kick
KVM: x86: Introducing kvm_x86_ops VCPU blocking/unblocking hooks
KVM: x86: Introducing kvm_x86_ops VM init/destroy hooks
KVM: x86: Rename kvm_apic_get_reg to kvm_lapic_get_reg
KVM: x86: Misc LAPIC changes to expose helper functions
KVM: shrink halt polling even more for invalid wakeups
KVM: s390: set halt polling to 80 microseconds
KVM: halt_polling: provide a way to qualify wakeups during poll
KVM: PPC: Book3S HV: Re-enable XICS fast path for irqfd-generated interrupts
kvm: Conditionally register IRQ bypass consumer
...
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skb_splice_bits() returns int, kcm_splice_read() returns ssize_t,
both are signed.
We may need another patch to make them all ssize_t, but that
deserves a separated patch.
Fixes: 91687355b927 ("kcm: Splice support")
Reported-by: David Binderman <linuxdev.baldrick@gmail.com>
Cc: Tom Herbert <tom@herbertland.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ehea_get_port may return NULL. Do not dereference NULL value.
Fixes: 8c4877a4128e ("ehea: Use the standard logging functions")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@debian.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In function bgx_lmac_handler only use a member of
lmac after checking it is not null.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: David Daney <david.daney@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Originally DSS only had DSI PLLs, and thus the DPI driver has functions
and variables that refer to DSI or DSI PLL. Now we support DSI, VIDEO
and HDMI PLLs, so it's time to remove the DSI references from the code.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Type A and B PLLs require a bit different calculations for the clock
rates. DPI driver supports only type A PLLs.
This patch adds support for the type B PLL.
Type B PLLs are simpler than type A, as type B can produce a good clock
for almost any rate. Thus we can just ask it to produce the pixel clock
and use one as LCK and PCK dividers.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Add comments showing how the PLL clock rates are calculated.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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dss_pll_calc_b() takes HDMI TMDS clock rate as a parameter. To make
dss_pll_calc_b() usable for non-HDMI users, change the function to take
clkout rate as parameter, and also change the current users of
dss_pll_calc_b() to accommodate that.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Move hdmi_pll_compute(), used to calculate the config for HDMI PLL, from
hdmi_pll.c to pll.c, with the name of dss_pll_calc_b(), to make it
available to non-HDMI users.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Add a "_a" postfix to the type A PLL calc functions, to differentiate
them from the type B PLL calculations which we will add shortly.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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To make it possible to use HDMI PLL for other video outputs than HDMI,
the HDMI PLL code needs to do runtime_get/put for the HDMI IP, so that
the IP (include the PLL) is enabled.
To do that we also need to store the HDMI pdev in the hdmi_pll_data.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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DPI driver uses a fixed clkout index, 0. This has worked fine as the
first clkout is usually used.
To generalize the code and to support additional clock sources, change
the code to use dss_pll_get_clkout_idx_for_src() to get the clkout
index.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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We can clean up the DPI driver's clock source handling by using the
dss_clk_source instead of only a dss_pll pointer.
This will also make it possible to use additional clock sources, like
PLL1_3 or HDMI_PLL, which the code did not support earlier.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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With the new PLL helpers, we can clean up the dispc_fclk_rate(). This
will also make dispc_fclk_rate() support clock sources it didn't support
earlier.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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With the new PLL helpers, we can clean up the dispc_mgr_lclk_rate().
This will also make dispc_mgr_lclk_rate() support clock sources it
didn't support earlier.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Add two PLL helper functions:
dss_pll_find_by_src() which returns the dss_pll for the given
dss_clk_source.
dss_pll_get_clkout_idx_for_src() which returns the clkout index for the
given dss_clk_source.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The code to set the clock muxes for DISPC's LCD clock inputs is very
confusing. Especially on DRA7, there's an additional clock muxing that
needs to be done, which at the moment is done in dpi.c using
dss_ctrl_pll_set_control_mux().
Clean this all up by:
- Using dss_clk_source instead of dss_pll_id, as dss_pll_id doesn't
specify the clock source quite correctly.
- Splitting the dss_select_lcd_clk_source() up into DSS version specific
helper functions.
- Using dss_ctrl_pll_set_control_mux() from the helper functions, so
that dpi.c doesn't have to call it.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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DSS uses two types of PLLs, type A (DSI & Video) and type B (HDMI). The
two types behave slightly differently, but we don't have the type of the
PLL available anywhere for the driver.
This patch adds an enum for the PLL type and a field in the PLL's HW
data to store it.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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enum dss_clk_source does not have values for all clock sources available
on OMAP4+ DSS versions. Add the missing clock sources.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The names of the enum dss_clk_source's values are legacy names, only
correct for OMAP3 DSS. Rename the names to more generic ones.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Now that there is no "non-generic" version of the function to get the
clock source name, lets rename dss_get_generic_clk_source_name() to
dss_get_clk_source_name().
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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