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2021-04-10x86/platform/intel/quark: Fix incorrect kernel-doc comment syntax in filesAditya Srivastava
The opening comment mark '/**' is used for highlighting the beginning of kernel-doc comments. There are certain files in arch/x86/platform/intel-quark, which follow this syntax, but the content inside does not comply with kernel-doc. Such lines were probably not meant for kernel-doc parsing, but are parsed due to the presence of kernel-doc like comment syntax(i.e, '/**'), which causes unexpected warnings from kernel-doc. E.g., presence of kernel-doc like comment in the header lines for arch/x86/platform/intel-quark/imr.c causes these warnings: "warning: Function parameter or member 'fmt' not described in 'pr_fmt'" "warning: expecting prototype for c(). Prototype was for pr_fmt() instead" Similarly for arch/x86/platform/intel-quark/imr_selftest.c too. Provide a simple fix by replacing these occurrences with general comment format, i.e. '/*', to prevent kernel-doc from parsing it. Signed-off-by: Aditya Srivastava <yashsri421@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20210330213022.28769-1-yashsri421@gmail.com
2021-04-10genirq: Reduce irqdebug cacheline bouncingNicholas Piggin
note_interrupt() increments desc->irq_count for each interrupt even for percpu interrupt handlers, even when they are handled successfully. This causes cacheline bouncing and limits scalability. Instead of incrementing irq_count every time, only start incrementing it after seeing an unhandled irq, which should avoid the cache line bouncing in the common path. This actually should give better consistency in handling misbehaving irqs too, because instead of the first unhandled irq arriving at an arbitrary point in the irq_count cycle, its arrival will begin the irq_count cycle. Cédric reports the result of his IPI throughput test: Millions of IPIs/s ----------- -------------------------------------- upstream upstream patched chips cpus default noirqdebug default (irqdebug) ----------- ----------------------------------------- 1 0-15 4.061 4.153 4.084 0-31 7.937 8.186 8.158 0-47 11.018 11.392 11.233 0-63 11.460 13.907 14.022 2 0-79 8.376 18.105 18.084 0-95 7.338 22.101 22.266 0-111 6.716 25.306 25.473 0-127 6.223 27.814 28.029 Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20210402132037.574661-1-npiggin@gmail.com
2021-04-10kernel: Initialize cpumask before parsingTetsuo Handa
KMSAN complains that new_value at cpumask_parse_user() from write_irq_affinity() from irq_affinity_proc_write() is uninitialized. [ 148.133411][ T5509] ===================================================== [ 148.135383][ T5509] BUG: KMSAN: uninit-value in find_next_bit+0x325/0x340 [ 148.137819][ T5509] [ 148.138448][ T5509] Local variable ----new_value.i@irq_affinity_proc_write created at: [ 148.140768][ T5509] irq_affinity_proc_write+0xc3/0x3d0 [ 148.142298][ T5509] irq_affinity_proc_write+0xc3/0x3d0 [ 148.143823][ T5509] ===================================================== Since bitmap_parse() from cpumask_parse_user() calls find_next_bit(), any alloc_cpumask_var() + cpumask_parse_user() sequence has possibility that find_next_bit() accesses uninitialized cpu mask variable. Fix this problem by replacing alloc_cpumask_var() with zalloc_cpumask_var(). Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: https://lore.kernel.org/r/20210401055823.3929-1-penguin-kernel@I-love.SAKURA.ne.jp
2021-04-10btrfs: zoned: move superblock logging zone locationNaohiro Aota
Moves the location of the superblock logging zones. The new locations of the logging zones are now determined based on fixed block addresses instead of on fixed zone numbers. The old placement method based on fixed zone numbers causes problems when one needs to inspect a file system image without access to the drive zone information. In such case, the super block locations cannot be reliably determined as the zone size is unknown. By locating the superblock logging zones using fixed addresses, we can scan a dumped file system image without the zone information since a super block copy will always be present at or after the fixed known locations. Introduce the following three pairs of zones containing fixed offset locations, regardless of the device zone size. - primary superblock: offset 0B (and the following zone) - first copy: offset 512G (and the following zone) - Second copy: offset 4T (4096G, and the following zone) If a logging zone is outside of the disk capacity, we do not record the superblock copy. The first copy position is much larger than for a non-zoned filesystem, which is at 64M. This is to avoid overlapping with the log zones for the primary superblock. This higher location is arbitrary but allows supporting devices with very large zone sizes, plus some space around in between. Such large zone size is unrealistic and very unlikely to ever be seen in real devices. Currently, SMR disks have a zone size of 256MB, and we are expecting ZNS drives to be in the 1-4GB range, so this limit gives us room to breathe. For now, we only allow zone sizes up to 8GB. The maximum zone size that would still fit in the space is 256G. The fixed location addresses are somewhat arbitrary, with the intent of maintaining superblock reliability for smaller and larger devices, with the preference for the latter. For this reason, there are two superblocks under the first 1T. This should cover use cases for physical devices and for emulated/device-mapper devices. The superblock logging zones are reserved for superblock logging and never used for data or metadata blocks. Note that we only reserve the two zones per primary/copy actually used for superblock logging. We do not reserve the ranges of zones possibly containing superblocks with the largest supported zone size (0-16GB, 512G-528GB, 4096G-4112G). The zones containing the fixed location offsets used to store superblocks on a non-zoned volume are also reserved to avoid confusion. Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com> Signed-off-by: David Sterba <dsterba@suse.com>
2021-04-10fbdev: zero-fill colormap in fbcmap.cPhillip Potter
Use kzalloc() rather than kmalloc() for the dynamically allocated parts of the colormap in fb_alloc_cmap_gfp, to prevent a leak of random kernel data to userspace under certain circumstances. Fixes a KMSAN-found infoleak bug reported by syzbot at: https://syzkaller.appspot.com/bug?id=741578659feabd108ad9e06696f0c1f2e69c4b6e Reported-by: syzbot+47fa9c9c648b765305b9@syzkaller.appspotmail.com Cc: stable <stable@vger.kernel.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Phillip Potter <phil@philpotter.co.uk> Link: https://lore.kernel.org/r/20210331220719.1499743-1-phil@philpotter.co.uk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10node: fix device cleanups in error handling codeDan Carpenter
We can't use kfree() to free device managed resources so the kfree(dev) is against the rules. It's easier to write this code if we open code the device_register() as a device_initialize() and device_add(). That way if dev_set_name() set name fails we can call put_device() and it will clean up correctly. Fixes: acc02a109b04 ("node: Add memory-side caching attributes") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/YHA0JUra+F64+NpB@mwanda Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10kobject_uevent: remove warning in init_uevent_argv()Greg Kroah-Hartman
syzbot can trigger the WARN() in init_uevent_argv() which isn't the nicest as the code does properly recover and handle the error. So change the WARN() call to pr_warn() and provide some more information on what the buffer size that was needed. Link: https://lore.kernel.org/r/20201107082206.GA19079@kroah.com Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: linux-kernel@vger.kernel.org Reported-by: syzbot+92340f7b2b4789907fdb@syzkaller.appspotmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210405094852.1348499-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10firmware: qcom-scm: Fix QCOM_SCM configurationHe Ying
When CONFIG_QCOM_SCM is y and CONFIG_HAVE_ARM_SMCCC is not set, compiling errors are encountered as follows: drivers/firmware/qcom_scm-smc.o: In function `__scm_smc_do_quirk': qcom_scm-smc.c:(.text+0x36): undefined reference to `__arm_smccc_smc' drivers/firmware/qcom_scm-legacy.o: In function `scm_legacy_call': qcom_scm-legacy.c:(.text+0xe2): undefined reference to `__arm_smccc_smc' drivers/firmware/qcom_scm-legacy.o: In function `scm_legacy_call_atomic': qcom_scm-legacy.c:(.text+0x1f0): undefined reference to `__arm_smccc_smc' Note that __arm_smccc_smc is defined when HAVE_ARM_SMCCC is y. So add dependency on HAVE_ARM_SMCCC in QCOM_SCM configuration. Fixes: 916f743da354 ("firmware: qcom: scm: Move the scm driver to drivers/firmware") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: He Ying <heying24@huawei.com> Link: https://lore.kernel.org/r/20210406094200.60952-1-heying24@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10speakup: i18n: Switch to kmemdup_nul() in spk_msg_set()Yang Yingliang
Use kmemdup_nul() helper instead of open-coding to simplify the code in spk_msg_set(). Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20210406034434.442251-1-yangyingliang@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10w1: ds28e17: Use module_w1_family to simplify the codeChen Huang
module_w1_family() makes the code simpler by eliminating boilerplate code. Signed-off-by: Chen Huang <chenhuang5@huawei.com> Link: https://lore.kernel.org/r/20210408130954.1158963-2-chenhuang5@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10w1: ds2805: Use module_w1_family to simplify the codeChen Huang
module_w1_family() makes the code simpler by eliminating boilerplate code. Signed-off-by: Chen Huang <chenhuang5@huawei.com> Link: https://lore.kernel.org/r/20210408130954.1158963-1-chenhuang5@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10binder: tell userspace to dump current backtrace when detected oneway spammingHang Lu
When async binder buffer got exhausted, some normal oneway transactions will also be discarded and may cause system or application failures. By that time, the binder debug information we dump may not be relevant to the root cause. And this issue is difficult to debug if without the backtrace of the thread sending spam. This change will send BR_ONEWAY_SPAM_SUSPECT to userspace when oneway spamming is detected, request to dump current backtrace. Oneway spamming will be reported only once when exceeding the threshold (target process dips below 80% of its oneway space, and current process is responsible for either more than 50 transactions, or more than 50% of the oneway space). And the detection will restart when the async buffer has returned to a healthy state. Acked-by: Todd Kjos <tkjos@google.com> Signed-off-by: Hang Lu <hangl@codeaurora.org> Link: https://lore.kernel.org/r/1617961246-4502-3-git-send-email-hangl@codeaurora.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10binder: fix the missing BR_FROZEN_REPLY in binder_return_stringsHang Lu
Add BR_FROZEN_REPLY in binder_return_strings to support stat function. Fixes: ae28c1be1e54 ("binder: BINDER_GET_FROZEN_INFO ioctl") Acked-by: Todd Kjos <tkjos@google.com> Signed-off-by: Hang Lu <hangl@codeaurora.org> Link: https://lore.kernel.org/r/1617961246-4502-2-git-send-email-hangl@codeaurora.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: hvc: make symbol 'hvc_udbg_dev' staticYu Kuai
The sparse tool complains as follows: drivers/tty/hvc/hvc_udbg.c:20:19: warning: symbol 'hvc_udbg_dev' was not declared. Should it be static? This symbol is not used outside of hvc_udbg.c, so this commit marks it static. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Link: https://lore.kernel.org/r/20210407125826.4139130-1-yukuai3@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: clarify that not all ttys have a class deviceJohan Hovold
Commit 30004ac9c090 ("tty: add tty_struct->dev pointer to corresponding device instance") added a struct device pointer field to struct tty_struct which was populated with the corresponding tty class device during initialisation. Unfortunately, not all ttys have a class device (e.g. pseudoterminals and serdev) in which case the device pointer will be set to NULL, something which have bit driver authors over the years. In retrospect perhaps this field should never have been added, but let's at least document the current behaviour. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210409073512.6876-1-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10serial: Add missing MODULE_DEVICE_TABLEBixuan Cui
This patch adds missing MODULE_DEVICE_TABLE definition which generates correct modalias for automatic loading of this driver when it is built as an external module. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Bixuan Cui <cuibixuan@huawei.com> Link: https://lore.kernel.org/r/20210410035048.11466-1-cuibixuan@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10dt-bindings: serial: samsung: include generic dtschema to match bluetooth childKrzysztof Kozlowski
Include the generic serial.yaml dtschema so the child node like "bluetooth" will be properly matched: arch/arm/boot/dts/exynos4210-universal_c210.dt.yaml: serial@13800000: 'bluetooth' does not match any of the regexes: 'pinctrl-[0-9]+' Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20210409172027.11296-1-krzysztof.kozlowski@canonical.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10serial: core: return early on unsupported ioctlsJohan Hovold
Drivers can return -ENOIOCTLCMD when an ioctl is not recognised to tell the upper layers to continue looking for a handler. This is not the case for the RS485 and ISO7816 ioctls whose handlers should return -ENOTTY directly in case a serial driver does not implement the corresponding methods. Fixes: a5f276f10ff7 ("serial_core: Handle TIOC[GS]RS485 ioctls.") Fixes: ad8c0eaa0a41 ("tty/serial_core: add ISO7816 infrastructure") Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210407095208.31838-9-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10serial: core: drop redundant TIOCGSERIAL memsetJohan Hovold
Since commit 5099d234a52a ("serial_core: switch to ->[sg]et_serial()") the serial structure passed to uart_get_info() has already have been cleared by the tty layer so drop the redundant memset. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210407095208.31838-8-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: add ASYNC_SPLIT_TERMIOS to deprecation maskJohan Hovold
Callout devices are long-gone, but the ASYNC_SPLIT_TERMIOS flag was never added to the deprecation mask. Add it so that a warning is printed if it is ever used. Fixes: 8a8ae62f8296 ("tty: warn on deprecated serial flags") Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210407095208.31838-7-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: refactor TIOCSSERIAL handlingJohan Hovold
Factor out the deprecated serial flags handling and tty-operation check shared with the compat TIOCSSERIAL handler. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210407095208.31838-6-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: use pr_warn_ratelimited() for deprecated serial flagsJohan Hovold
Use pr_warn_ratelimited() when warning about deprecated serial flags instead of open coding. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210407095208.31838-5-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: fix return value for unsupported termiox ioctlsJohan Hovold
Drivers should return -ENOTTY ("Inappropriate I/O control operation") when an ioctl isn't supported, while -EINVAL is used for invalid arguments. Support for termiox was added by commit 1d65b4a088de ("tty: Add termiox") in 2008 but no driver support ever followed and it was recently ripped out by commit e0efb3168d34 ("tty: Remove dead termiox code"). Fix the return value for the unsupported termiox ioctls, which have always returned -EINVAL, by explicitly returning -ENOTTY rather than removing them completely and falling back to the default unrecognised- ioctl handling. Fixes: 1d65b4a088de ("tty: Add termiox") Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210407095208.31838-4-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: fix return value for unsupported ioctlsJohan Hovold
Drivers should return -ENOTTY ("Inappropriate I/O control operation") when an ioctl isn't supported, while -EINVAL is used for invalid arguments. Fix up the TIOCMGET, TIOCMSET and TIOCGICOUNT helpers which returned -EINVAL when a tty driver did not implement the corresponding operations. Note that the TIOCMGET and TIOCMSET helpers predate git and do not get a corresponding Fixes tag below. Fixes: d281da7ff6f7 ("tty: Make tiocgicount a handler") Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210407095208.31838-3-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: actually undefine superseded ASYNC flagsJohan Hovold
Some kernel-internal ASYNC flags have been superseded by tty-port flags and should no longer be used by kernel drivers. Fix the misspelled "__KERNEL__" compile guards which failed their sole purpose to break out-of-tree drivers that have not yet been updated. Fixes: 5c0517fefc92 ("tty: core: Undefine ASYNC_* flags superceded by TTY_PORT* flags") Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210407095208.31838-2-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: tty_ldisc: Remove the repeated word 'the'Xiaofei Tan
Remove the repeated word 'the' following advice of checkpatch.pl Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Link: https://lore.kernel.org/r/1617779210-51576-11-git-send-email-tanxiaofei@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: tty_ldisc: Do not use assignment in if conditionXiaofei Tan
Do not use assignment in if condition following the advice of checkpatch.pl. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Link: https://lore.kernel.org/r/1617779210-51576-10-git-send-email-tanxiaofei@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: tty_ldisc: Fix coding style issues of block commentsXiaofei Tan
Fix coding style issues of block comments, reported by checkpatch.pl. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Link: https://lore.kernel.org/r/1617779210-51576-9-git-send-email-tanxiaofei@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: tty_ldisc: Add a blank line after declarationsXiaofei Tan
Add a blank line after declarations, reported by checkpatch.pl. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Link: https://lore.kernel.org/r/1617779210-51576-8-git-send-email-tanxiaofei@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: tty_ldisc: Fix an issue of code indent should use tabsXiaofei Tan
Fix an issue of code indent should use tabs, reported by checkpatch.pl. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Link: https://lore.kernel.org/r/1617779210-51576-7-git-send-email-tanxiaofei@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: tty_jobctrl: Remove spaces before tabsXiaofei Tan
Remove spaces before tabs following the advice of checkpatch.pl. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Link: https://lore.kernel.org/r/1617779210-51576-6-git-send-email-tanxiaofei@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: tty_jobctrl: Fix coding style issues of block commentsXiaofei Tan
Fix coding style issues of block comments, reported by checkpatch.pl. Besides, do some expression optimization for the sentenses. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Link: https://lore.kernel.org/r/1617779210-51576-5-git-send-email-tanxiaofei@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty: tty_jobctrl: Add a blank line after declarationsXiaofei Tan
Add a blank line after declarations, reported by checkpatch.pl. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Link: https://lore.kernel.org/r/1617779210-51576-4-git-send-email-tanxiaofei@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty/sysrq: Fix issues of code indent should use tabsXiaofei Tan
Fix issues of code indent should use tabs, reported by checkpatch.pl. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Link: https://lore.kernel.org/r/1617779210-51576-3-git-send-email-tanxiaofei@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10tty/sysrq: Add a blank line after declarationsXiaofei Tan
Add a blank line after declarations, reported by checkpatch.pl. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Link: https://lore.kernel.org/r/1617779210-51576-2-git-send-email-tanxiaofei@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10staging: comedi: tests: ni_routes_test: Remove unused variable 'olddevroutes'Qiheng Lin
GCC reports the following warning with W=1: drivers/staging/comedi/drivers/tests/ni_routes_test.c:215:45: warning: variable 'olddevroutes' set but not used [-Wunused-but-set-variable] 215 | const struct ni_device_routes *devroutes, *olddevroutes; | ^~~~~~~~~~~~ This variable is not used in function , this commit remove it to fix the warning. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qiheng Lin <linqiheng@huawei.com> Link: https://lore.kernel.org/r/20210410064932.12905-1-linqiheng@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10staging: ralink-gdma: Add missing MODULE_DEVICE_TABLEBixuan Cui
This patch adds missing MODULE_DEVICE_TABLE definition which generates correct modalias for automatic loading of this driver when it is built as an external module. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Bixuan Cui <cuibixuan@huawei.com> Link: https://lore.kernel.org/r/20210410035037.11322-1-cuibixuan@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10staging: rtl8192e: remove unnecesasry f-trace like loggingMitali Borkar
Fixed Check: Remove unnecessary f-trace like logging by simply deleting that statement as we have other modes of logging like ftrace. Reported by checkpatch. Signed-off-by: Mitali Borkar <mitaliborkar810@gmail.com> Link: https://lore.kernel.org/r/YHDtWizzh5EVLL4/@kali Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10staging: rtl8192e: replace comparison to NULL by boolMitali Borkar
Fixed Comparison to NULL can be written as '!...' by replacing it with simpler form i.e boolean expression. This makes code more readable alternative. Reported by checkpatch. Signed-off-by: Mitali Borkar <mitaliborkar810@gmail.com> Link: https://lore.kernel.org/r/YHDnWpWztxeZospi@kali Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10staging: rtl8723bs: remove redundant initializationBryan Brattlof
The variable ret is being initialized as 0 and is never used until it's updated by sdio_register_driver() This removes the redundant initialization of ret Signed-off-by: Bryan Brattlof <hello@bryanbrattlof.com> Link: https://lore.kernel.org/r/20210409201235.407671-1-hello@bryanbrattlof.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09Merge branch 'for-5.12/dax' into libnvdimm-fixesDan Williams
Pick up dax compile fix.
2021-04-09libnvdimm/region: Fix nvdimm_has_flush() to handle ND_REGION_ASYNCVaibhav Jain
In case a platform doesn't provide explicit flush-hints but provides an explicit flush callback via ND_REGION_ASYNC region flag, then nvdimm_has_flush() still returns '0' indicating that writes do not require flushing. This happens on PPC64 with patch at [1] applied, where 'deep_flush' of a region was denied even though an explicit flush function was provided. Fix this by adding a condition to nvdimm_has_flush() to test for the ND_REGION_ASYNC flag on the region and see if a 'region->flush' callback is assigned. Link: http://lore.kernel.org/r/161703936121.36.7260632399582101498.stgit@e1fbed493c87 [1] Fixes: c5d4355d10d4 ("libnvdimm: nd_region flush callback support") Reported-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com> Link: https://lore.kernel.org/r/20210402092555.208590-1-vaibhav@linux.ibm.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2021-04-09Merge tag 'clk-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk fixes from Stephen Boyd: "Here's the latest pile of clk driver and clk framework fixes for this release: - Two clk framework fixes for a long standing issue in clk_notifier_{register,unregister}() where we used a pointer that was for a struct containing a list head when there was no container struct - A compile warning fix for socfpga that's good to have - A double free problem with devm registered fixed factor clks - One last fix to the Qualcomm camera clk driver to use the right clk ops so clks don't get stuck and stop working because the firmware takes them for a ride" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: fixed: fix double free in resource managed fixed-factor clock clk: fix invalid usage of list cursor in unregister clk: fix invalid usage of list cursor in register clk: qcom: camcc: Update the clock ops for the SC7180 clk: socfpga: fix iomem pointer cast on 64-bit
2021-04-09Merge tag 'perf-tools-fixes-for-v5.12-2020-04-09' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull perf tool fixes from Arnaldo Carvalho de Melo: - Fix wrong LBR block sorting in 'perf report' - Fix 'perf inject' repipe usage when consuming perf.data files - Avoid potential buffer overrun when decoding ARM SPE hardware tracing packets, bug found using a fuzzer * tag 'perf-tools-fixes-for-v5.12-2020-04-09' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf arm-spe: Avoid potential buffer overrun perf report: Fix wrong LBR block sorting perf inject: Fix repipe usage
2021-04-09Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge misc fixes from Andrew Morton: "14 patches. Subsystems affected by this patch series: mm (kasan, gup, pagecache, and kfence), MAINTAINERS, mailmap, nds32, gcov, ocfs2, ia64, and lib" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: lib: fix kconfig dependency on ARCH_WANT_FRAME_POINTERS kfence, x86: fix preemptible warning on KPTI-enabled systems lib/test_kasan_module.c: suppress unused var warning kasan: fix conflict with page poisoning fs: direct-io: fix missing sdio->boundary ia64: fix user_stack_pointer() for ptrace() ocfs2: fix deadlock between setattr and dio_end_io_write gcov: re-fix clang-11+ support nds32: flush_dcache_page: use page_mapping_file to avoid races with swapoff mm/gup: check page posion status for coredump. .mailmap: fix old email addresses mailmap: update email address for Jordan Crouse treewide: change my e-mail address, fix my name MAINTAINERS: update CZ.NIC's Turris information
2021-04-09Merge tag 'net-5.12-rc7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Networking fixes for 5.12-rc7, including fixes from can, ipsec, mac80211, wireless, and bpf trees. No scary regressions here or in the works, but small fixes for 5.12 changes keep coming. Current release - regressions: - virtio: do not pull payload in skb->head - virtio: ensure mac header is set in virtio_net_hdr_to_skb() - Revert "net: correct sk_acceptq_is_full()" - mptcp: revert "mptcp: provide subflow aware release function" - ethernet: lan743x: fix ethernet frame cutoff issue - dsa: fix type was not set for devlink port - ethtool: remove link_mode param and derive link params from driver - sched: htb: fix null pointer dereference on a null new_q - wireless: iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_enqueue_hcmd() - wireless: iwlwifi: fw: fix notification wait locking - wireless: brcmfmac: p2p: Fix deadlock introduced by avoiding the rtnl dependency Current release - new code bugs: - napi: fix hangup on napi_disable for threaded napi - bpf: take module reference for trampoline in module - wireless: mt76: mt7921: fix airtime reporting and related tx hangs - wireless: iwlwifi: mvm: rfi: don't lock mvm->mutex when sending config command Previous releases - regressions: - rfkill: revert back to old userspace API by default - nfc: fix infinite loop, refcount & memory leaks in LLCP sockets - let skb_orphan_partial wake-up waiters - xfrm/compat: Cleanup WARN()s that can be user-triggered - vxlan, geneve: do not modify the shared tunnel info when PMTU triggers an ICMP reply - can: fix msg_namelen values depending on CAN_REQUIRED_SIZE - can: uapi: mark union inside struct can_frame packed - sched: cls: fix action overwrite reference counting - sched: cls: fix err handler in tcf_action_init() - ethernet: mlxsw: fix ECN marking in tunnel decapsulation - ethernet: nfp: Fix a use after free in nfp_bpf_ctrl_msg_rx - ethernet: i40e: fix receiving of single packets in xsk zero-copy mode - ethernet: cxgb4: avoid collecting SGE_QBASE regs during traffic Previous releases - always broken: - bpf: Refuse non-O_RDWR flags in BPF_OBJ_GET - bpf: Refcount task stack in bpf_get_task_stack - bpf, x86: Validate computation of branch displacements - ieee802154: fix many similar syzbot-found bugs - fix NULL dereferences in netlink attribute handling - reject unsupported operations on monitor interfaces - fix error handling in llsec_key_alloc() - xfrm: make ipv4 pmtu check honor ip header df - xfrm: make hash generation lock per network namespace - xfrm: esp: delete NETIF_F_SCTP_CRC bit from features for esp offload - ethtool: fix incorrect datatype in set_eee ops - xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory model - openvswitch: fix send of uninitialized stack memory in ct limit reply Misc: - udp: add get handling for UDP_GRO sockopt" * tag 'net-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (182 commits) net: fix hangup on napi_disable for threaded napi net: hns3: Trivial spell fix in hns3 driver lan743x: fix ethernet frame cutoff issue net: ipv6: check for validity before dereferencing cfg->fc_nlinfo.nlh net: dsa: lantiq_gswip: Configure all remaining GSWIP_MII_CFG bits net: dsa: lantiq_gswip: Don't use PHY auto polling net: sched: sch_teql: fix null-pointer dereference ipv6: report errors for iftoken via netlink extack net: sched: fix err handler in tcf_action_init() net: sched: fix action overwrite reference counting Revert "net: sched: bump refcount for new action in ACT replace mode" ice: fix memory leak of aRFS after resuming from suspend i40e: Fix sparse warning: missing error code 'err' i40e: Fix sparse error: 'vsi->netdev' could be null i40e: Fix sparse error: uninitialized symbol 'ring' i40e: Fix sparse errors in i40e_txrx.c i40e: Fix parameters in aq_get_phy_register() nl80211: fix beacon head validation bpf, x86: Validate computation of branch displacements for x86-32 bpf, x86: Validate computation of branch displacements for x86-64 ...
2021-04-09Merge tag 'io_uring-5.12-2021-04-09' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull io_uring fixes from Jens Axboe: "Two minor fixups for the reissue logic, and one for making sure that unbounded work is canceled on io-wq exit" * tag 'io_uring-5.12-2021-04-09' of git://git.kernel.dk/linux-block: io-wq: cancel unbounded works on io-wq destroy io_uring: fix rw req completion io_uring: clear F_REISSUE right after getting it
2021-04-09lib: fix kconfig dependency on ARCH_WANT_FRAME_POINTERSJulian Braha
When LATENCYTOP, LOCKDEP, or FAULT_INJECTION_STACKTRACE_FILTER is enabled and ARCH_WANT_FRAME_POINTERS is disabled, Kbuild gives a warning such as: WARNING: unmet direct dependencies detected for FRAME_POINTER Depends on [n]: DEBUG_KERNEL [=y] && (M68K || UML || SUPERH) || ARCH_WANT_FRAME_POINTERS [=n] || MCOUNT [=n] Selected by [y]: - LATENCYTOP [=y] && DEBUG_KERNEL [=y] && STACKTRACE_SUPPORT [=y] && PROC_FS [=y] && !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86 Depending on ARCH_WANT_FRAME_POINTERS causes a recursive dependency error. ARCH_WANT_FRAME_POINTERS is to be selected by the architecture, and is not supposed to be overridden by other config options. Link: https://lkml.kernel.org/r/20210329165329.27994-1-julianbraha@gmail.com Signed-off-by: Julian Braha <julianbraha@gmail.com> Cc: Andreas Schwab <schwab@linux-m68k.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Necip Fazil Yildiran <fazilyildiran@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09kfence, x86: fix preemptible warning on KPTI-enabled systemsMarco Elver
On systems with KPTI enabled, we can currently observe the following warning: BUG: using smp_processor_id() in preemptible caller is invalidate_user_asid+0x13/0x50 CPU: 6 PID: 1075 Comm: dmesg Not tainted 5.12.0-rc4-gda4a2b1a5479-kfence_1+ #1 Hardware name: Hewlett-Packard HP Pro 3500 Series/2ABF, BIOS 8.11 10/24/2012 Call Trace: dump_stack+0x7f/0xad check_preemption_disabled+0xc8/0xd0 invalidate_user_asid+0x13/0x50 flush_tlb_one_kernel+0x5/0x20 kfence_protect+0x56/0x80 ... While it normally makes sense to require preemption to be off, so that the expected CPU's TLB is flushed and not another, in our case it really is best-effort (see comments in kfence_protect_page()). Avoid the warning by disabling preemption around flush_tlb_one_kernel(). Link: https://lore.kernel.org/lkml/YGIDBAboELGgMgXy@elver.google.com/ Link: https://lkml.kernel.org/r/20210330065737.652669-1-elver@google.com Signed-off-by: Marco Elver <elver@google.com> Reported-by: Tomi Sarvela <tomi.p.sarvela@intel.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Jann Horn <jannh@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-09lib/test_kasan_module.c: suppress unused var warningAndrew Morton
Local `unused' is intentionally unused - it is there to suppress __must_check warnings. Reported-by: kernel test robot <lkp@intel.com> Link: https://lkml.kernel.org/r/202104050216.HflRxfJm-lkp@intel.com Cc: Marco Elver <elver@google.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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