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2021-08-25i2c: cadence: Implement save restoreShubhrajyoti Datta1-11/+27
The zynqmp platform now supports chip-off so the registers can lose context. Implement save restore for i2c module. Since we have only a couple of registers an unconditional restore is done. Acked-by: Michal Simek <[email protected]> Signed-off-by: Shubhrajyoti Datta <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-25i2c: xlp9xx: fix main IRQ checkSergey Shtylyov1-1/+1
Iff platform_get_irq() returns 0 for the main IRQ, the driver's probe() method will return 0 early (as if the method's call was successful). Let's consider IRQ0 valid for simplicity -- devm_request_irq() can always override that decision... Fixes: 2bbd681ba2b ("i2c: xlp9xx: Driver for Netlogic XLP9XX/5XX I2C controller") Signed-off-by: Sergey Shtylyov <[email protected]> Reviewed-by: George Cherian <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-25i2c: mt65xx: fix IRQ checkSergey Shtylyov1-1/+1
Iff platform_get_irq() returns 0, the driver's probe() method will return 0 early (as if the method's call was successful). Let's consider IRQ0 valid for simplicity -- devm_request_irq() can always override that decision... Fixes: ce38815d39ea ("I2C: mediatek: Add driver for MediaTek I2C controller") Signed-off-by: Sergey Shtylyov <[email protected]> Reviewed-by: Qii Wang <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-19i2c: virtio: add a virtio i2c frontend driverJie Deng6-0/+353
Add an I2C bus driver for virtio para-virtualization. The controller can be emulated by the backend driver in any device model software by following the virtio protocol. The device specification can be found on https://lists.oasis-open.org/archives/virtio-comment/202101/msg00008.html. By following the specification, people may implement different backend drivers to emulate different controllers according to their needs. Co-developed-by: Conghui Chen <[email protected]> Signed-off-by: Conghui Chen <[email protected]> Signed-off-by: Jie Deng <[email protected]> Reviewed-by: Viresh Kumar <[email protected]> Tested-by: Viresh Kumar <[email protected]> Acked-by: Michael S. Tsirkin <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-19i2c: hix5hd2: fix IRQ checkSergey Shtylyov1-1/+1
Iff platform_get_irq() returns 0, the driver's probe() method will return 0 early (as if the method's call was successful). Let's consider IRQ0 valid for simplicity -- devm_request_irq() can always override that decision... Fixes: 15ef27756b23 ("i2c: hix5hd2: add i2c controller driver") Signed-off-by: Sergey Shtylyov <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-19i2c: s3c2410: fix IRQ checkSergey Shtylyov1-1/+1
Iff platform_get_irq() returns 0, the driver's probe() method will return 0 early (as if the method's call was successful). Let's consider IRQ0 valid for simplicity -- devm_request_irq() can always override that decision... Fixes: e0d1ec97853f ("i2c-s3c2410: Change IRQ to be plain integer.") Signed-off-by: Sergey Shtylyov <[email protected]> Reviewed-by: Krzysztof Kozlowski <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-19i2c: iop3xx: fix deferred probingSergey Shtylyov1-4/+2
When adding the code to handle platform_get_irq*() errors in the commit 489447380a29 ("handle errors returned by platform_get_irq*()"), the actual error code was enforced to be -ENXIO in the driver for some strange reason. This didn't matter much until the deferred probing was introduced -- which requires an actual error code to be propagated upstream from the failure site. While fixing this, also stop overriding the errors from request_irq() to -EIO (done since the pre-git era). Fixes: 489447380a29 ("[PATCH] handle errors returned by platform_get_irq*()") Signed-off-by: Sergey Shtylyov <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-17i2c: synquacer: fix deferred probingSergey Shtylyov1-1/+1
The driver overrides the error codes returned by platform_get_irq() to -ENODEV, so if it returns -EPROBE_DEFER, the driver will fail the probe permanently instead of the deferred probing. Switch to propagating the error codes upstream. Fixes: 0d676a6c4390 ("i2c: add support for Socionext SynQuacer I2C controller") Signed-off-by: Sergey Shtylyov <[email protected]> Acked-by: Ard Biesheuvel <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-17i2c: sun6i-pw2i: Prefer strscpy over strlcpyLen Baker1-1/+1
strlcpy() reads the entire source buffer first. This read may exceed the destination size limit. This is both inefficient and can lead to linear read overflows if a source string is not NUL-terminated. The safe replacement is strscpy(). This is a previous step in the path to remove the strlcpy() function entirely from the kernel [1]. [1] https://github.com/KSPP/linux/issues/89 Signed-off-by: Len Baker <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-17i2c: remove dead PMC MSP TWI/SMBus/I2C driverLukas Bulwahn3-610/+0
Commit 1b00767fd8e1 ("MIPS: Remove PMC MSP71xx platform") removes the config PMC_MSP in ./arch/mips/Kconfig. Hence, since then, the corresponding PMC MSP TWI/SMBus/I2C driver is dead code. Remove this dead driver. Signed-off-by: Lukas Bulwahn <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-11i2c: dev: Use sysfs_emit() in "show" functionsAndy Shevchenko1-1/+1
The sysfs_emit() function was introduced to make it less ambiguous which function is preferred when writing to the output buffer in a "show" callback [1]. Convert the I²C device sysfs interface from sprintf() to sysfs_emit() accordingly, as the latter is aware of the PAGE_SIZE buffer and correctly returns the number of bytes written into the buffer. No functional change intended. [1] Documentation/filesystems/sysfs.rst Signed-off-by: Andy Shevchenko <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-11i2c: dev: Define pr_fmt() and drop duplication substringsAndy Shevchenko1-11/+9
Define pr_fmt() to print module name as prefix and at the same time drop duplication substrings in the messages. While at it, convert printk(<LEVEL>) to pr_<level>(). Signed-off-by: Andy Shevchenko <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-11i2c: designware: Fix indentation in the headerAndy Shevchenko1-2/+2
In couple of places the indentation makes harder to read the code. Fix it to be sane. Signed-off-by: Andy Shevchenko <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-11i2c: designware: Use DIV_ROUND_CLOSEST() macroAndy Shevchenko2-6/+7
Instead of open-coding DIV_ROUND_CLOSEST() and similar use the macros directly. While at it, replace numbers with predefined SI metric prefixes. No functional change intended. Signed-off-by: Andy Shevchenko <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-11units: Add SI metric prefix definitionsAndy Shevchenko1-0/+16
Sometimes it's useful to have well-defined SI metric prefix to be used to self-describe the formulas or equations. List most popular ones in the units.h. Signed-off-by: Andy Shevchenko <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-11i2c: at91: mark PM ops as __maybe unusedWolfram Sang1-1/+1
The driver uses pm_ptr(), so the PM ops could be unused. Reported-by: kernel test robot <[email protected]> Fixes: dab4b0e8c9a5 ("i2c: at91: remove #define CONFIG_PM") Signed-off-by: Wolfram Sang <[email protected]> Reviewed-by: Codrin Ciubotariu <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-11i2c: sh_mobile: : use proper DMAENGINE API for terminationWolfram Sang1-2/+2
dmaengine_terminate_all() is deprecated in favor of explicitly saying if it should be sync or async. Here, we want dmaengine_terminate_sync() because there is no other synchronization code in the driver to handle an async case. Signed-off-by: Wolfram Sang <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-11i2c: qup: : use proper DMAENGINE API for terminationWolfram Sang1-1/+1
dmaengine_terminate_all() is deprecated in favor of explicitly saying if it should be sync or async. Here, we want dmaengine_terminate_sync() because there is no other synchronization code in the driver to handle an async case. Signed-off-by: Wolfram Sang <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-11i2c: mxs: : use proper DMAENGINE API for terminationWolfram Sang1-2/+2
dmaengine_terminate_all() is deprecated in favor of explicitly saying if it should be sync or async. Here, we want dmaengine_terminate_sync() because there is no other synchronization code in the driver to handle an async case. Signed-off-by: Wolfram Sang <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-11i2c: imx: : use proper DMAENGINE API for terminationWolfram Sang1-3/+3
dmaengine_terminate_all() is deprecated in favor of explicitly saying if it should be sync or async. Here, we want dmaengine_terminate_sync() because there is no other synchronization code in the driver to handle an async case. Signed-off-by: Wolfram Sang <[email protected]> Reviewed-by: Oleksij Rempel <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-11i2c: at91-master: : use proper DMAENGINE API for terminationWolfram Sang1-2/+2
dmaengine_terminate_all() is deprecated in favor of explicitly saying if it should be sync or async. Here, we want dmaengine_terminate_sync() because there is no other synchronization code in the driver to handle an async case. Signed-off-by: Wolfram Sang <[email protected]> Reviewed-by: Codrin Ciubotariu <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-10i2c: at91: remove #define CONFIG_PMClaudiu Beznea1-12/+5
Remove #define CONFIG_PM and use __maybe_unused for PM functions and pm_ptr() for PM ops. Signed-off-by: Claudiu Beznea <[email protected]> Reviewed-by: Codrin Ciubotariu <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-10i2c: parport: Switch to use module_parport_driver()Andy Shevchenko1-25/+11
Switch to use module_parport_driver() to reduce boilerplate code. Signed-off-by: Andy Shevchenko <[email protected]> Reviewed-by: Jean Delvare <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-10i2c: i801: Remove not needed debug messageHeiner Kallweit1-4/+0
If a user is interested in such details he can enable smbus tracing. Reviewed-by: Jean Delvare <[email protected]> Tested-by: Jean Delvare <[email protected]> Signed-off-by: Heiner Kallweit <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-10i2c: i801: make p2sb_spinlock a mutexHeiner Kallweit1-4/+4
p2sb_spinlock is used in i801_add_tco_spt() only, and in process context only. Therefore a mutex is sufficient, and we can make the definition local to i801_add_tco_spt(). Reviewed-by: Jean Delvare <[email protected]> Reviewed-by: Mika Westerberg <[email protected]> Signed-off-by: Heiner Kallweit <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-10i2c: i801: Improve disabling runtime pmHeiner Kallweit1-6/+1
Setting the autosuspend delay to a negative value disables runtime pm in a little bit smarter way, because we need no cleanup when removing the driver. Note that this is safe when reloading the driver, because the call to pm_runtime_set_autosuspend_delay() in probe() will reverse the effect. See update_autosuspend() for details. Reviewed-by: Jean Delvare <[email protected]> Signed-off-by: Heiner Kallweit <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-08-03i2c: highlander: add IRQ checkSergey Shtylyov1-1/+1
The driver is written as if platform_get_irq() returns 0 on errors (while actually it returns a negative error code), blithely passing these error codes to request_irq() (which takes *unsigned* IRQ #) -- which fails with -EINVAL. Add the necessary error check to the pre-existing *if* statement forcing the driver into the polling mode... Fixes: 4ad48e6ab18c ("i2c: Renesas Highlander FPGA SMBus support") Signed-off-by: Sergey Shtylyov <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-07-28i2c: i801: Fix handling SMBHSTCNT_PEC_ENHeiner Kallweit1-16/+11
Bit SMBHSTCNT_PEC_EN is used only if software calculates the CRC and uses register SMBPEC. This is not supported by the driver, it supports hw-calculation of CRC only (using bit SMBAUXSTS_CRCE). The chip spec states the following, therefore never set bit SMBHSTCNT_PEC_EN. Chapter SMBus CRC Generation and Checking If the AAC bit is set in the Auxiliary Control register, the PCH automatically calculates and drives CRC at the end of the transmitted packet for write cycles, and will check the CRC for read cycles. It will not transmit the contents of the PEC register for CRC. The PEC bit must not be set in the Host Control register. If this bit is set, unspecified behavior will result. This patch is based solely on the specification and compile-tested only, because I have no PEC-capable devices. Signed-off-by: Heiner Kallweit <[email protected]> Tested-by: Jean Delvare <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2021-07-25Linux 5.14-rc3Linus Torvalds1-1/+1
2021-07-25smpboot: fix duplicate and misplaced inlining directiveLinus Torvalds1-1/+1
gcc doesn't care, but clang quite reasonably pointed out that the recent commit e9ba16e68cce ("smpboot: Mark idle_init() as __always_inlined to work around aggressive compiler un-inlining") did some really odd things: kernel/smpboot.c:50:20: warning: duplicate 'inline' declaration specifier [-Wduplicate-decl-specifier] static inline void __always_inline idle_init(unsigned int cpu) ^ which not only has that duplicate inlining specifier, but the new __always_inline was put in the wrong place of the function definition. We put the storage class specifiers (ie things like "static" and "extern") first, and the type information after that. And while the compiler may not care, we put the inline specifier before the types. So it should be just static __always_inline void idle_init(unsigned int cpu) instead. Cc: Ingo Molnar <[email protected]> Cc: Thomas Gleixner <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-07-25Merge tag 'powerpc-5.14-3' of ↵Linus Torvalds5-8/+68
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: - Fix guest to host memory corruption in H_RTAS due to missing nargs check. - Fix guest triggerable host crashes due to bad handling of nested guest TM state. - Fix possible crashes due to incorrect reference counting in kvm_arch_vcpu_ioctl(). - Two commits fixing some regressions in KVM transactional memory handling introduced by the recent rework of the KVM code. Thanks to Nicholas Piggin, Alexey Kardashevskiy, and Michael Neuling. * tag 'powerpc-5.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state KVM: PPC: Book3S: Fix H_RTAS rets buffer overflow KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak KVM: PPC: Book3S: Fix CONFIG_TRANSACTIONAL_MEM=n crash KVM: PPC: Book3S HV P9: Fix guest TM support
2021-07-25Merge tag 'timers-urgent-2021-07-25' of ↵Linus Torvalds2-8/+10
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fixes from Thomas Gleixner: "A small set of timer related fixes: - Plug a race between rearm and process tick in the posix CPU timers code - Make the optimization to avoid recalculation of the next timer interrupt work correctly when there are no timers pending" * tag 'timers-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timers: Fix get_next_timer_interrupt() with no timers pending posix-cpu-timers: Fix rearm racing against process tick
2021-07-25Merge tag 'locking-urgent-2021-07-25' of ↵Linus Torvalds1-3/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 jump label fix from Thomas Gleixner: "A single fix for jump labels to prevent the compiler from agressive un-inlining which results in a section mismatch" * tag 'locking-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: jump_labels: Mark __jump_label_transform() as __always_inlined to work around aggressive compiler un-inlining
2021-07-25Merge tag 'efi-urgent-2021-07-25' of ↵Linus Torvalds4-7/+23
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull EFI fixes from Thomas Gleixner: "A set of EFI fixes: - Prevent memblock and I/O reserved resources to get out of sync when EFI memreserve is in use. - Don't claim a non-existing table is invalid - Don't warn when firmware memory is already reserved correctly" * tag 'efi-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi/mokvar: Reserve the table only if it is in boot services data efi/libstub: Fix the efi_load_initrd function description firmware/efi: Tell memblock about EFI iomem reservations efi/tpm: Differentiate missing and invalid final event log table.
2021-07-25Merge tag 'core-urgent-2021-07-25' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core fix from Thomas Gleixner: "A single update for the boot code to prevent aggressive un-inlining which causes a section mismatch" * tag 'core-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: smpboot: Mark idle_init() as __always_inlined to work around aggressive compiler un-inlining
2021-07-25Merge tag 'dma-mapping-5.14-1' of git://git.infradead.org/users/hch/dma-mappingLinus Torvalds1-2/+10
Pull dma-mapping fix from Christoph Hellwig: - handle vmalloc addresses in dma_common_{mmap,get_sgtable} (Roman Skakun) * tag 'dma-mapping-5.14-1' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable}
2021-07-24Merge tag '5.14-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds6-55/+247
Pull cifs fixes from Steve French: "Five cifs/smb3 fixes, including a DFS failover fix, two fallocate fixes, and two trivial coverity cleanups" * tag '5.14-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6: cifs: fix fallocate when trying to allocate a hole. CIFS: Clarify SMB1 code for POSIX delete file CIFS: Clarify SMB1 code for POSIX Create cifs: support share failover when remounting cifs: only write 64kb at a time when fallocating a small region of a file
2021-07-24Merge tag 'riscv-for-linus-5.14-rc3' of ↵Linus Torvalds4-21/+48
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Palmer Dabbelt: - properly set the memory size, which fixes 32-bit systems - allow initrd to load anywhere in memory, rather that restricting it to the first 256MiB - fix the 'mem=' parameter on 64-bit systems to properly account for the maximum supported memory now that the kernel is outside the linear map - avoid installing mappings into the last 4KiB of memory, which conflicts with error values - avoid the stack from being freed while it is being walked - a handful of fixes to the new copy to/from user routines * tag 'riscv-for-linus-5.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: __asm_copy_to-from_user: Fix: Typos in comments riscv: __asm_copy_to-from_user: Remove unnecessary size check riscv: __asm_copy_to-from_user: Fix: fail on RV32 riscv: __asm_copy_to-from_user: Fix: overrun copy riscv: stacktrace: pin the task's stack in get_wchan riscv: Make sure the kernel mapping does not overlap with IS_ERR_VALUE riscv: Make sure the linear mapping does not use the kernel mapping riscv: Fix memory_limit for 64-bit kernel RISC-V: load initrd wherever it fits into memory riscv: Fix 32-bit RISC-V boot failure
2021-07-24ACPI: fix NULL pointer dereferenceLinus Torvalds1-1/+2
Commit 71f642833284 ("ACPI: utils: Fix reference counting in for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer that was possibly NULL. That fails miserably, because that helper inline function is not set up to handle that case. Just make acpi_dev_put() silently accept a NULL pointer, rather than calling down to put_device() with an invalid offset off that NULL pointer. Link: https://lore.kernel.org/lkml/[email protected]/ Reported-and-tested-by: Jens Axboe <[email protected]> Tested-by: Daniel Scally <[email protected]> Cc: Andy Shevchenko <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-07-24Merge tag 'scsi-fixes' of ↵Linus Torvalds6-92/+78
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "Four fixes, all in drivers, all of which can lead to user visible problems in certain situations" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: target: Fix NULL dereference on XCOPY completion scsi: mpt3sas: Transition IOC to Ready state during shutdown scsi: target: Fix protect handling in WRITE SAME(32) scsi: iscsi: Fix iface sysfs attr detection
2021-07-24Merge tag 'io_uring-5.14-2021-07-24' of git://git.kernel.dk/linux-blockLinus Torvalds2-17/+45
Pull io_uring fixes from Jens Axboe: - Fix a memory leak due to a race condition in io_init_wq_offload (Yang) - Poll error handling fixes (Pavel) - Fix early fdput() regression (me) - Don't reissue iopoll requests off release path (me) - Add a safety check for io-wq queue off wrong path (me) * tag 'io_uring-5.14-2021-07-24' of git://git.kernel.dk/linux-block: io_uring: explicitly catch any illegal async queue attempt io_uring: never attempt iopoll reissue from release path io_uring: fix early fdput() of file io_uring: fix memleak in io_init_wq_offload() io_uring: remove double poll entry on arm failure io_uring: explicitly count entries for poll reqs
2021-07-24Merge tag 'block-5.14-2021-07-24' of git://git.kernel.dk/linux-blockLinus Torvalds6-19/+32
Pull block fixes from Jens Axboe: - NVMe pull request (Christoph): - tracing fix (Keith Busch) - fix multipath head refcounting (Hannes Reinecke) - Write Zeroes vs PI fix (me) - drop a bogus WARN_ON (Zhihao Cheng) - Increase max blk-cgroup policy size, now that mq-deadline uses it too (Oleksandr) * tag 'block-5.14-2021-07-24' of git://git.kernel.dk/linux-block: nvme: set the PRACT bit when using Write Zeroes with T10 PI nvme: fix nvme_setup_command metadata trace event nvme: fix refcounting imbalance when all paths are down nvme-pci: don't WARN_ON in nvme_reset_work if ctrl.state is not RESETTING block: increase BLKCG_MAX_POLS
2021-07-24Merge branch 'i2c/for-current' of ↵Linus Torvalds2-12/+9
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c fixes from Wolfram Sang: "Two bugfixes for the I2C subsystem" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: mpc: Poll for MCF misc: eeprom: at24: Always append device id even if label property is set.
2021-07-24Merge branch 'akpm' (patches from Andrew)Linus Torvalds15-51/+93
Merge misc mm fixes from Andrew Morton: "15 patches. VM subsystems affected by this patch series: userfaultfd, kfence, highmem, pagealloc, memblock, pagecache, secretmem, pagemap, and hugetlbfs" * akpm: hugetlbfs: fix mount mode command line processing mm: fix the deadlock in finish_fault() mm: mmap_lock: fix disabling preemption directly mm/secretmem: wire up ->set_page_dirty writeback, cgroup: do not reparent dax inodes writeback, cgroup: remove wb from offline list before releasing refcnt memblock: make for_each_mem_range() traverse MEMBLOCK_HOTPLUG regions mm: page_alloc: fix page_poison=1 / INIT_ON_ALLOC_DEFAULT_ON interaction mm: use kmap_local_page in memzero_page mm: call flush_dcache_page() in memcpy_to_page() and memzero_page() kfence: skip all GFP_ZONEMASK allocations kfence: move the size check to the beginning of __kfence_alloc() kfence: defer kfence_test_init to ensure that kunit debugfs is created selftest: use mmap instead of posix_memalign to allocate memory userfaultfd: do not untag user pointers
2021-07-23riscv: __asm_copy_to-from_user: Fix: Typos in commentsAkira Tsukamoto1-9/+9
Fixing typos and grammar mistakes and using more intuitive label name. Signed-off-by: Akira Tsukamoto <[email protected]> Fixes: ca6eaaa210de ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall") Signed-off-by: Palmer Dabbelt <[email protected]>
2021-07-23riscv: __asm_copy_to-from_user: Remove unnecessary size checkAkira Tsukamoto1-1/+0
Clean up: The size of 0 will be evaluated in the next step. Not required here. Signed-off-by: Akira Tsukamoto <[email protected]> Fixes: ca6eaaa210de ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall") Signed-off-by: Palmer Dabbelt <[email protected]>
2021-07-23riscv: __asm_copy_to-from_user: Fix: fail on RV32Akira Tsukamoto1-1/+1
Had a bug when converting bytes to bits when the cpu was rv32. The a3 contains the number of bytes and multiple of 8 would be the bits. The LGREG is holding 2 for RV32 and 3 for RV32, so to achieve multiple of 8 it must always be constant 3. The 2 was mistakenly used for rv32. Signed-off-by: Akira Tsukamoto <[email protected]> Fixes: ca6eaaa210de ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall") Signed-off-by: Palmer Dabbelt <[email protected]>
2021-07-23riscv: __asm_copy_to-from_user: Fix: overrun copyAkira Tsukamoto1-3/+3
There were two causes for the overrun memory access. The threshold size was too small. The aligning dst require one SZREG and unrolling word copy requires 8*SZREG, total have to be at least 9*SZREG. Inside the unrolling copy, the subtracting -(8*SZREG-1) would make iteration happening one extra loop. Proper value is -(8*SZREG). Signed-off-by: Akira Tsukamoto <[email protected]> Fixes: ca6eaaa210de ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall") Signed-off-by: Palmer Dabbelt <[email protected]>
2021-07-23hugetlbfs: fix mount mode command line processingMike Kravetz1-1/+1
In commit 32021982a324 ("hugetlbfs: Convert to fs_context") processing of the mount mode string was changed from match_octal() to fsparam_u32. This changed existing behavior as match_octal does not require octal values to have a '0' prefix, but fsparam_u32 does. Use fsparam_u32oct which provides the same behavior as match_octal. Link: https://lkml.kernel.org/r/[email protected] Fixes: 32021982a324 ("hugetlbfs: Convert to fs_context") Signed-off-by: Mike Kravetz <[email protected]> Reported-by: Dennis Camera <[email protected]> Reviewed-by: Matthew Wilcox (Oracle) <[email protected]> Cc: David Howells <[email protected]> Cc: Al Viro <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-07-23mm: fix the deadlock in finish_fault()Qi Zheng1-1/+10
Commit 63f3655f9501 ("mm, memcg: fix reclaim deadlock with writeback") fix the following ABBA deadlock by pre-allocating the pte page table without holding the page lock. lock_page(A) SetPageWriteback(A) unlock_page(A) lock_page(B) lock_page(B) pte_alloc_one shrink_page_list wait_on_page_writeback(A) SetPageWriteback(B) unlock_page(B) # flush A, B to clear the writeback Commit f9ce0be71d1f ("mm: Cleanup faultaround and finish_fault() codepaths") reworked the relevant code but ignored this race. This will cause the deadlock above to appear again, so fix it. Link: https://lkml.kernel.org/r/[email protected] Fixes: f9ce0be71d1f ("mm: Cleanup faultaround and finish_fault() codepaths") Signed-off-by: Qi Zheng <[email protected]> Acked-by: Kirill A. Shutemov <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Vladimir Davydov <[email protected]> Cc: Muchun Song <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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