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In sirfsoc_dma_pm_suspend(), variable ‘sdesc’ is initialized but never used, which
leads to warning with W=1.
drivers/dma/sirf-dma.c: In function 'sirfsoc_dma_pm_suspend':
drivers/dma/sirf-dma.c:1014:27: warning: variable 'sdesc' set but not used [-Wunused-but-set-variable]
So remove it.
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
In pl330_add(), variable ‘regs’ is initialized but never used, which
leads to warning with W=1.
drivers/dma/pl330.c: In function 'pl330_add':
drivers/dma/pl330.c:1891:16: warning: variable 'regs' set but not used [-Wunused-but-set-variable]
So remove it.
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
In s3c24xx_dma_get_phy(), variable ‘cdata’ is initialized but never used, which
leads to warning with W=1. Removing this make pdata unused.
drivers/dma/s3c24xx-dma.c: In function ‘s3c24xx_dma_get_phy’:
drivers/dma/s3c24xx-dma.c:293:30: warning: variable ‘cdata’ set but not used [-Wunused-but-set-variable]
struct s3c24xx_dma_channel *cdata;
So remove both of them.
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
In stm32_dma_set_xfer_param(), variable ‘src_addr’ is initialized but never used, which
leads to warning with W=1
drivers/dma/stm32-dma.c: In function ‘stm32_dma_set_xfer_param’:
drivers/dma/stm32-dma.c:577:13: warning: variable ‘src_addr’ set but not used [-Wunused-but-set-variable]
dma_addr_t src_addr, dst_addr;
So remove it.
Reviewed-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
In stm32_dma_set_xfer_param(), variable ‘dst_addr’ is initialized but never used, which
leads to warning with W=1
drivers/dma/stm32-dma.c: In function ‘stm32_dma_set_xfer_param’:
drivers/dma/stm32-dma.c:577:23: warning: variable ‘dst_addr’ set but not used [-Wunused-but-set-variable]
dma_addr_t src_addr, dst_addr;
So remove it.
Reviewed-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
In stm32_dma_chan_irq(), variable ‘sfcr’ is initialized but never used, which
leads to warning with W=1
drivers/dma/stm32-dma.c: In function ‘stm32_dma_chan_irq’:
drivers/dma/stm32-dma.c:530:19: warning: variable ‘sfcr’ set but not used [-Wunused-but-set-variable]
u32 status, scr, sfcr;
So remove it.
Reviewed-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
In pd_tx_submit(), variable ‘cookie’ is initialized but never used, which
leads to warning with W=1
drivers/dma/pch_dma.c: In function ‘pd_tx_submit’:
drivers/dma/pch_dma.c:420:15: warning: variable ‘cookie’ set but not used [-Wunused-but-set-variable]
dma_cookie_t cookie;
So remove it.
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
In mic_dma_init(), variable ‘data’ is initialized but never used, which
leads to warning with W=1
drivers/dma/mic_x100_dma.c: In function ‘mic_dma_init’:
drivers/dma/mic_x100_dma.c:557:17: warning: variable ‘data’ set but not used [-Wunused-but-set-variable]
unsigned long data;
So remove it.
Cc: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
In mdc_prep_dma_memcpy(), mdc_prep_dma_cyclic() and mdc_prep_slave_sg()
variable ‘prev_phys’ is initialized but never used, which
leads to warning with W=1
drivers/dma/img-mdc-dma.c: In function ‘mdc_prep_dma_memcpy’:
drivers/dma/img-mdc-dma.c:295:24: warning: variable ‘prev_phys’ set but not used [-Wunused-but-set-variable]
dma_addr_t curr_phys, prev_phys;
drivers/dma/img-mdc-dma.c: In function ‘mdc_prep_dma_cyclic’:
drivers/dma/img-mdc-dma.c:378:24: warning: variable ‘prev_phys’ set but not used [-Wunused-but-set-variable]
dma_addr_t curr_phys, prev_phys;
drivers/dma/img-mdc-dma.c: In function ‘mdc_prep_slave_sg’:
drivers/dma/img-mdc-dma.c:461:24: warning: variable ‘prev_phys’ set but not
used [-Wunused-but-set-variable]
dma_addr_t curr_phys, prev_phys;
So remove it.
Cc: Damien.Horsley <Damien.Horsley@imgtec.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
In usb_dmac_of_xlate(), variable ‘uchan’ is initialized but never used, which
leads to warning with W=1
drivers/dma/sh/usb-dmac.c: In function ‘usb_dmac_of_xlate’:
drivers/dma/sh/usb-dmac.c:655:24: warning: variable ‘uchan’ set but not used [-Wunused-but-set-variable]
struct usb_dmac_chan *uchan;
So remove it.
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
In __cleanup(), variable ‘res’ is initialized but never used, which
leads to warning with W=1
drivers/dma/ioat/dma.c: In function ‘__cleanup’:
drivers/dma/ioat/dma.c:614:28: warning: variable ‘res’ set but not used [-Wunused-but-set-variable]
struct dmaengine_result res;
So remove it.
Cc: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
In ioat_tx_submit_unlock(), variable ‘ioat_dma’ is initialized but never
used, which leads to warning with W=1
drivers/dma/ioat/dma.c: In function ‘ioat_alloc_ring_ent’:
drivers/dma/ioat/dma.c:341:25: warning: variable ‘ioat_dma’ set but not used [-Wunused-but-set-variable]
struct ioatdma_device *ioat_dma;
So remove it.
Cc: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
In ioat3_dma_probe(), variable ‘is_raid_device’ is initialized but never
used, which leads to warning with W=1
drivers/dma/ioat/init.c: In function ‘ioat3_dma_probe’:
drivers/dma/ioat/init.c:1084:7: warning: variable ‘is_raid_device’ set
but not used [-Wunused-but-set-variable]
bool is_raid_device = false;
So remove it.
Cc: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
save_gs is supposed to save the channel status in order to be restored at
resume time but it is never updated and is always 0. Anyway, the channel
status is updated in the per channel loop later in the resume function.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Several versions of DW DMAC have multi block transfers hardware
support. Hardware support of multi block transfers is disabled
by default if we use DT to configure DMAC and software emulation
of multi block transfers used instead.
Add multi-block property, so it is possible to enable hardware
multi block transfers (if present) via DT.
Switch from per device is_nollp variable to multi_block array
to be able enable/disable multi block transfers separately per
channel.
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
All known devices, which use DT for configuration, support
memory-to-memory transfers. So enable it by default, if we read
configuration from DT.
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
We should use dma_pool_zalloc instead of dma_pool_alloc/memset.
Signed-off-by: Souptick joarder <jrdr.linux@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
We should use dma_pool_zalloc instead of dma_pool_alloc/memset.
Signed-off-by: Souptick joarder <jrdr.linux@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Existing implementation does not honor the alignment restrictions imposed
by the DMA engines. Allocate buffers with built in slack for honoring
alignment restrictions. Creating new arrays to hold the aligned pointers
and use those pointers for operations.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Inside pdc_alloc_desc(), pci_pool_alloc() followed by memset will be
replaced by pci_pool_zalloc()
Signed-off-by: Souptick joarder <jrdr.linux@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
dma_pool_alloc does not initialize the value of the newly allocated
block for the v_lli, and the uninitilize value make the tests failed
which is on pine64 with dmatest.
we can fix it just change the "|=" to "=" for the v_lli->cfg.
Signed-off-by: Hao Zhang <hao5781286@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Use builtin_platform_driver() helper to simplify the code.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
There is new API in place which provides allocation mechanism of interrupts for
PCI devices. Use it in the HSU DMA driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
The residue calculation was taking in consideration that dma
transaction status will be always retrieved in the dma callback
used to inform that dma transfer is complete. However this is not
the case for all subsystems that use dma. Some subsystems use a
timer to check the dma status periodically.
Therefore the calculation was updated and residue is calculated
accordingly by a) update the residue calculation taking in
consideration the last used buffer index by using *buf_ptail* variable
and b) chn_real_count (number of bytes transferred) is initialized to
zero, when dma channel is created, to avoid using an uninitialized
value in residue calculation when dma status is checked without
waiting dma complete event.
Signed-off-by: Nandor Han <nandor.han@ge.com>
Acked-by: Peter Senna Tschudin <peter.senna@collabora.com>
Tested-by: Peter Senna Tschudin <peter.senna@collabora.com>
Tested-by: Marek Vasut <marex@denx.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
After executing DMAGO it's possible that a request can come in for the
current xferred count, but if that happens too soon then DMAMOV SAR/DAR
may not have yet completed. If that happens, we should explicitly return 0
since nothing has been transferred yet.
Signed-off-by: Stephen Barber <smbarber@chromium.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Due to a hardware bug, reading memory (from the Accelerator Coherency Port)
with a burst size equal to the maximum burst size allowed by the DMA
hardware's buffer size will cause a hardware hang on the ARTPEC-6 SoC,
where the only solution is a manual power cycle.
On ARTPEC-6, this hardware bug does not trigger when writing memory (to the
Accelerator Coherency Port) with a burst size equal to the maximum burst
size allowed by the DMA hardware's buffer size.
To avoid this hardware hang, introduce a new optional max-burst property
for memory reads. For completeness, also introduce a max-burst property for
memory writes.
Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This driver currently uses modular infrastructure but is controlled
by a bool Kconfig.
There is a general consensus from the DMA reviewers and maintainers
that "if it can be modular, it should be modular" in order to keep
the bzImage size under control for multi platform kernels.
Build tested only. Also needed some new pm_clk symbols exported
before this commit is applied to tree in order to avoid modpost
errors like:
ERROR: "pm_clk_add_clk" [drivers/dma/tegra210-adma.ko] undefined!
ERROR: "pm_clk_create" [drivers/dma/tegra210-adma.ko] undefined!
ERROR: "pm_clk_destroy" [drivers/dma/tegra210-adma.ko] undefined!
ERROR: "pm_clk_suspend" [drivers/dma/tegra210-adma.ko] undefined!
ERROR: "pm_clk_resume" [drivers/dma/tegra210-adma.ko] undefined!
These were added as exports in the v4.8-rc1 merge window.
Cc: Laxman Dewangan <ldewangan@nvidia.com>
Cc: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: dmaengine@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/dma/fsl_raid.ko | grep alias
$
After this patch:
$ modinfo drivers/dma/fsl_raid.ko | grep alias
alias: of:N*T*Cfsl,raideng-v1.0C*
alias: of:N*T*Cfsl,raideng-v1.0
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Merge tag 'befs-v4.9-rc1' of git://github.com/luisbg/linux-befs
Pull befs fixes from Luis de Bethencourt:
"I recently took maintainership of the befs file system [0]. This is
the first time I send you a git pull request, so please let me know if
all the below is OK.
Salah Triki and myself have been cleaning the code and fixing a few
small bugs.
Sorry I couldn't send this sooner in the merge window, I was waiting
to have my GPG key signed by kernel members at ELCE in Berlin a few
days ago."
[0] https://lkml.org/lkml/2016/7/27/502
* tag 'befs-v4.9-rc1' of git://github.com/luisbg/linux-befs: (39 commits)
befs: befs: fix style issues in datastream.c
befs: improve documentation in datastream.c
befs: fix typos in datastream.c
befs: fix typos in btree.c
befs: fix style issues in super.c
befs: fix comment style
befs: add check for ag_shift in superblock
befs: dump inode_size superblock information
befs: remove unnecessary initialization
befs: fix typo in befs_sb_info
befs: add flags field to validate superblock state
befs: fix typo in befs_find_key
befs: remove unused BEFS_BT_PARMATCH
fs: befs: remove ret variable
fs: befs: remove in vain variable assignment
fs: befs: remove unnecessary *befs_sb variable
fs: befs: remove useless initialization to zero
fs: befs: remove in vain variable assignment
fs: befs: Insert NULL inode to dentry
fs: befs: Remove useless calls to brelse in befs_find_brun_dblindirect
...
extract as much possible uncertainty from a running system at boot time as
possible, hoping to capitalize on any possible variation in CPU operation
(due to runtime data differences, hardware differences, SMP ordering,
thermal timing variation, cache behavior, etc).
At the very least, this plugin is a much more comprehensive example for
how to manipulate kernel code using the gcc plugin internals.
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Merge tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull gcc plugins update from Kees Cook:
"This adds a new gcc plugin named "latent_entropy". It is designed to
extract as much possible uncertainty from a running system at boot
time as possible, hoping to capitalize on any possible variation in
CPU operation (due to runtime data differences, hardware differences,
SMP ordering, thermal timing variation, cache behavior, etc).
At the very least, this plugin is a much more comprehensive example
for how to manipulate kernel code using the gcc plugin internals"
* tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
latent_entropy: Mark functions with __latent_entropy
gcc-plugins: Add latent_entropy plugin
Pull MIPS updates from Ralf Baechle:
"This is the main MIPS pull request for 4.9:
MIPS core arch code:
- traps: 64bit kernels should read CP0_EBase 64bit
- traps: Convert ebase to KSEG0
- c-r4k: Drop bc_wback_inv() from icache flush
- c-r4k: Split user/kernel flush_icache_range()
- cacheflush: Use __flush_icache_user_range()
- uprobes: Flush icache via kernel address
- KVM: Use __local_flush_icache_user_range()
- c-r4k: Fix flush_icache_range() for EVA
- Fix -mabi=64 build of vdso.lds
- VDSO: Drop duplicated -I*/-E* aflags
- tracing: move insn_has_delay_slot to a shared header
- tracing: disable uprobe/kprobe on compact branch instructions
- ptrace: Fix regs_return_value for kernel context
- Squash lines for simple wrapper functions
- Move identification of VP(E) into proc.c from smp-mt.c
- Add definitions of SYNC barrierstype values
- traps: Ensure full EBase is written
- tlb-r4k: If there are wired entries, don't use TLBINVF
- Sanitise coherentio semantics
- dma-default: Don't check hw_coherentio if device is non-coherent
- Support per-device DMA coherence
- Adjust MIPS64 CAC_BASE to reflect Config.K0
- Support generating Flattened Image Trees (.itb)
- generic: Introduce generic DT-based board support
- generic: Convert SEAD-3 to a generic board
- Enable hardened usercopy
- Don't specify STACKPROTECTOR in defconfigs
Octeon:
- Delete dead code and files across the platform.
- Change to use all memory into use by default.
- Rename upper case variables in setup code to lowercase.
- Delete legacy hack for broken bootloaders.
- Leave maintaining the link state to the actual ethernet/PHY drivers.
- Add DTS for D-Link DSR-500N.
- Fix PCI interrupt routing on D-Link DSR-500N.
Pistachio:
- Remove ANDROID_TIMED_OUTPUT from defconfig
TX39xx:
- Move GPIO setup from .mem_setup() to .arch_init()
- Convert to Common Clock Framework
TX49xx:
- Move GPIO setup from .mem_setup() to .arch_init()
- Convert to Common Clock Framework
txx9wdt:
- Add missing clock (un)prepare calls for CCF
BMIPS:
- Add PW, GPIO SDHCI and NAND device node names
- Support APPENDED_DTB
- Add missing bcm97435svmb to DT_NONE
- Rename bcm96358nb4ser to bcm6358-neufbox4-sercom
- Add DT examples for BCM63268, BCM3368 and BCM6362
- Add support for BCM3368 and BCM6362
PCI
- Reduce stack frame usage
- Use struct list_head lists
- Support for CONFIG_PCI_DOMAINS_GENERIC
- Make pcibios_set_cache_line_size an initcall
- Inline pcibios_assign_all_busses
- Split pci.c into pci.c & pci-legacy.c
- Introduce CONFIG_PCI_DRIVERS_LEGACY
- Support generic drivers
CPC
- Convert bare 'unsigned' to 'unsigned int'
- Avoid lock when MIPS CM >= 3 is present
GIC:
- Delete unused file smp-gic.c
mt7620:
- Delete unnecessary assignment for the field "owner" from PCI
BCM63xx:
- Let clk_disable() return immediately if clk is NULL
pm-cps:
- Change FSB workaround to CPU blacklist
- Update comments on barrier instructions
- Use MIPS standard lightweight ordering barrier
- Use MIPS standard completion barrier
- Remove selection of sync types
- Add MIPSr6 CPU support
- Support CM3 changes to Coherence Enable Register
SMP:
- Wrap call to mips_cpc_lock_other in mips_cm_lock_other
- Introduce mechanism for freeing and allocating IPIs
cpuidle:
- cpuidle-cps: Enable use with MIPSr6 CPUs.
SEAD3:
- Rewrite to use DT and generic kernel feature.
USB:
- host: ehci-sead3: Remove SEAD-3 EHCI code
FBDEV:
- cobalt_lcdfb: Drop SEAD3 support
dt-bindings:
- Document a binding for simple ASCII LCDs
auxdisplay:
- img-ascii-lcd: driver for simple ASCII LCD displays
irqchip i8259:
- i8259: Add domain before mapping parent irq
- i8259: Allow platforms to override poll function
- i8259: Remove unused i8259A_irq_pending
Malta:
- Rewrite to use DT
of/platform:
- Probe "isa" busses by default
CM:
- Print CM error reports upon bus errors
Module:
- Migrate exception table users off module.h and onto extable.h
- Make various drivers explicitly non-modular:
- Audit and remove any unnecessary uses of module.h
mailmap:
- Canonicalize to Qais' current email address.
Documentation:
- MIPS supports HAVE_REGS_AND_STACK_ACCESS_API
Loongson1C:
- Add CPU support for Loongson1C
- Add board support
- Add defconfig
- Add RTC support for Loongson1C board
All this except one Documentation fix has sat in linux-next and has
survived Imagination's automated build test system"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (127 commits)
Documentation: MIPS supports HAVE_REGS_AND_STACK_ACCESS_API
MIPS: ptrace: Fix regs_return_value for kernel context
MIPS: VDSO: Drop duplicated -I*/-E* aflags
MIPS: Fix -mabi=64 build of vdso.lds
MIPS: Enable hardened usercopy
MIPS: generic: Convert SEAD-3 to a generic board
MIPS: generic: Introduce generic DT-based board support
MIPS: Support generating Flattened Image Trees (.itb)
MIPS: Adjust MIPS64 CAC_BASE to reflect Config.K0
MIPS: Print CM error reports upon bus errors
MIPS: Support per-device DMA coherence
MIPS: dma-default: Don't check hw_coherentio if device is non-coherent
MIPS: Sanitise coherentio semantics
MIPS: PCI: Support generic drivers
MIPS: PCI: Introduce CONFIG_PCI_DRIVERS_LEGACY
MIPS: PCI: Split pci.c into pci.c & pci-legacy.c
MIPS: PCI: Inline pcibios_assign_all_busses
MIPS: PCI: Make pcibios_set_cache_line_size an initcall
MIPS: PCI: Support for CONFIG_PCI_DOMAINS_GENERIC
MIPS: PCI: Use struct list_head lists
...
Just a few trivial small fixes.
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Merge tag 'sound-fix-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Just a few trivial small fixes"
* tag 'sound-fix-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: line6: fix a crash in line6_hwdep_write()
ALSA: seq: fix passing wrong pointer in function call of compatibility layer
ALSA: hda - Fix a failure of micmute led when having multi adcs
ALSA: line6: Fix POD X3 Live audio input
Pull more misc uaccess and vfs updates from Al Viro:
"The rest of the stuff from -next (more uaccess work) + assorted fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
score: traps: Add missing include file to fix build error
fs/super.c: don't fool lockdep in freeze_super() and thaw_super() paths
fs/super.c: fix race between freeze_super() and thaw_super()
overlayfs: Fix setting IOP_XATTR flag
iov_iter: kernel-doc import_iovec() and rw_copy_check_uvector()
blackfin: no access_ok() for __copy_{to,from}_user()
arm64: don't zero in __copy_from_user{,_inatomic}
arm: don't zero in __copy_from_user_inatomic()/__copy_from_user()
arc: don't leak bits of kernel stack into coredump
alpha: get rid of tail-zeroing in __copy_user()
Pull cifs fixes from Steve French:
"Including:
- nine bug fixes for stable. Some of these we found at the recent two
weeks of SMB3 test events/plugfests.
- significant improvements in reconnection (e.g. if server or network
crashes) especially when mounted with "persistenthandles" or to
server which advertises Continuous Availability on the share.
- a new mount option "idsfromsid" which improves POSIX compatibility
in some cases (when winbind not configured e.g.) by better (and
faster) fetching uid/gid from acl (when "cifsacl" mount option is
enabled). NB: we are almost complete work on "cifsacl" (querying
mode/uid/gid from ACL) for SMB3, but SMB3 support for cifsacl is
not included in this set.
- improved handling for SMB3 "credits" (even if server is buggy)
Still working on two sets of changes:
- cifsacl enablement for SMB3
- cleanup of RFC1001 length calculation (so we can handle encryption
and multichannel and RDMA)
And a couple of new bugs were reported recently (unrelated to above)
so will probably have another merge request next week"
* 'for-next' of git://git.samba.org/sfrench/cifs-2.6: (21 commits)
CIFS: Retrieve uid and gid from special sid if enabled
CIFS: Add new mount option to set owner uid and gid from special sids in acl
CIFS: Reset read oplock to NONE if we have mandatory locks after reopen
CIFS: Fix persistent handles re-opening on reconnect
SMB2: Separate RawNTLMSSP authentication from SMB2_sess_setup
SMB2: Separate Kerberos authentication from SMB2_sess_setup
Expose cifs module parameters in sysfs
Cleanup missing frees on some ioctls
Enable previous version support
Do not send SMB3 SET_INFO request if nothing is changing
SMB3: Add mount parameter to allow user to override max credits
fs/cifs: reopen persistent handles on reconnect
Clarify locking of cifs file and tcon structures and make more granular
Fix regression which breaks DFS mounting
fs/cifs: keep guid when assigning fid to fileinfo
SMB3: GUIDs should be constructed as random but valid uuids
Set previous session id correctly on SMB3 reconnect
cifs: Limit the overall credit acquired
Display number of credits available
Add way to query creation time of file via cifs xattr
...
Pull btrfs fixes from Chris Mason:
"Some fixes from Omar and Dave Sterba for our new free space tree.
This isn't heavily used yet, but as we move toward making it the new
default we wanted to nail down an endian bug"
* 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: tests: uninline member definitions in free_space_extent
btrfs: tests: constify free space extent specs
Btrfs: expand free space tree sanity tests to catch endianness bug
Btrfs: fix extent buffer bitmap tests on big-endian systems
Btrfs: catch invalid free space trees
Btrfs: fix mount -o clear_cache,space_cache=v2
Btrfs: fix free space tree bitmaps on big-endian systems
score images fail to build as follows.
arch/score/kernel/traps.c: In function 'show_stack':
arch/score/kernel/traps.c:55:3: error:
implicit declaration of function '__get_user'
__get_user() is declared in asm/uaccess.h, which was previously included
through asm/module.h.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Fixes: 88dd4a748da7 ("score: separate extable.h, switch module.h to it")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
sb_wait_write()->percpu_rwsem_release() fools lockdep to avoid the
false-positives. Now that xfs was fixed by Dave's commit dbad7c993053
("xfs: stop holding ILOCK over filldir callbacks") we can remove it and
change freeze_super() and thaw_super() to run with s_writers.rw_sem locks
held; we add two trivial helpers for that, lockdep_sb_freeze_release()
and lockdep_sb_freeze_acquire().
xfstests-dev/check `grep -il freeze tests/*/???` does not trigger any
warning from lockdep.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Pull overlayfs updates from Miklos Szeredi:
"This update contains fixes to the "use mounter's permission to access
underlying layers" area, and miscellaneous other fixes and cleanups.
No new features this time"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: use vfs_get_link()
vfs: add vfs_get_link() helper
ovl: use generic_readlink
ovl: explain error values when removing acl from workdir
ovl: Fix info leak in ovl_lookup_temp()
ovl: during copy up, switch to mounter's creds early
ovl: lookup: do getxattr with mounter's permission
ovl: copy_up_xattr(): use strnlen
Change thaw_super() to check frozen != SB_FREEZE_COMPLETE rather than
frozen == SB_UNFROZEN, otherwise it can race with freeze_super() which
drops sb->s_umount after SB_FREEZE_WRITE to preserve the lock ordering.
In this case thaw_super() will wrongly call s_op->unfreeze_fs() before
it was actually frozen, and call sb_freeze_unlock() which leads to the
unbalanced percpu_up_write(). Unfortunately lockdep can't detect this,
so this triggers misc BUG_ON()'s in kernel/rcu/sync.c.
Reported-and-tested-by: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
ovl_fill_super calls ovl_new_inode to create a root inode for the new
superblock before initializing sb->s_xattr. This wrongly causes
IOP_XATTR to be cleared in i_opflags of the new inode, causing SELinux
to log the following message:
SELinux: (dev overlay, type overlay) has no xattr support
Fix this by initializing sb->s_xattr and similar fields before calling
ovl_new_inode.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Both import_iovec() and rw_copy_check_uvector() take an array
(typically small and on-stack) which is used to hold an iovec array copy
from userspace. This is to avoid an expensive memory allocation in the
fast path (i.e. few iovec elements).
The caller may have to check whether these functions actually used
the provided buffer or allocated a new one -- but this differs between
the too. Let's just add a kernel doc to clarify what the semantics are
for each function.
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This update consists of:
- Fixes and improvements to existing tests
- Moving code from Documentation to selftests, samples, and tools.
Moves dnotify_test, prctl, ptp, vDSO, ia64, watchdog, and networking
tests from Documentation to selftests.
Moves mic/mpssd, misc-devices/mei, timers, watchdog, auxdisplay, and
blackfin examples from Documentation to samples.
Moves accounting, laptops/dslm, and pcmcia/crc32hash tools from
Documentation to tools.
Deletes BUILD_DOCSRC and its dependencies.
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Merge tag 'linux-kselftest-4.9-rc1-update' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest updates from Shuah Khan:
"This update consists of:
- Fixes and improvements to existing tests
- Moving code from Documentation to selftests, samples, and tools:
* Moves dnotify_test, prctl, ptp, vDSO, ia64, watchdog, and
networking tests from Documentation to selftests.
* Moves mic/mpssd, misc-devices/mei, timers, watchdog, auxdisplay,
and blackfin examples from Documentation to samples.
* Moves accounting, laptops/dslm, and pcmcia/crc32hash tools from
Documentation to tools.
* Deletes BUILD_DOCSRC and its dependencies"
* tag 'linux-kselftest-4.9-rc1-update' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (21 commits)
selftests/futex: Check ANSI terminal color support
Doc: update 00-INDEX files to reflect the runnable code move
samples: move blackfin gptimers-example from Documentation
tools: move pcmcia crc32hash tool from Documentation
tools: move laptops dslm tool from Documentation
tools: move accounting tool from Documentation
samples: move auxdisplay example code from Documentation
samples: move watchdog example code from Documentation
samples: move timers example code from Documentation
samples: move misc-devices/mei example code from Documentation
samples: move mic/mpssd example code from Documentation
selftests: Move networking/timestamping from Documentation
selftests: move watchdog tests from Documentation/watchdog
selftests: move ia64 tests from Documentation/ia64
selftests: move vDSO tests from Documentation/vDSO
selftests: move ptp tests from Documentation/ptp
selftests: move prctl tests from Documentation/prctl
selftests: move dnotify_test from Documentation/filesystems
selftests/timers: Add missing error code assignment before test
selftests/zram: replace ZRAM_LZ4_COMPRESS
...
