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2019-09-10fuse: unexport request opsMiklos Szeredi
All requests are now sent with one of the fuse_simple_... helpers. Get rid of the old api from the fuse internal header. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert retrieve to simple apiMiklos Szeredi
Rename fuse_request_send_notify_reply() to fuse_simple_notify_reply() and convert to passing fuse_args instead of fuse_req. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert release to simple apiMiklos Szeredi
Since we cannot reserve the request structure up-front, make sure that the request allocation doesn't fail using __GFP_NOFAIL. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10cuse: convert init to simple apiMiklos Szeredi
This is a straightforward conversion. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert init to simple apiMiklos Szeredi
Bypass the fc->initialized check by setting the force flag. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert writepages to simple apiMiklos Szeredi
Derive fuse_writepage_args from fuse_io_args. Sending the request is tricky since it was done with fi->lock held, hence we must either use atomic allocation or release the lock. Both are possible so try atomic first and if it fails, release the lock and do the regular allocation with GFP_NOFS and __GFP_NOFAIL. Both flags are necessary for correct operation. Move the page realloc function from dev.c to file.c and convert to using fuse_writepage_args. The last caller of fuse_write_fill() is gone, so get rid of it. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert readdir to simple apiMiklos Szeredi
The old fuse_read_fill() helper can be deleted, now that the last user is gone. The fuse_io_args struct is moved to fuse_i.h so it can be shared between readdir/read code. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert readpages to simple apiMiklos Szeredi
Need to extend fuse_io_args with 'attr_ver' and 'ff' members, that take the functionality of the same named members in fuse_req. fuse_short_read() can now take struct fuse_args_pages. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert direct_io to simple apiMiklos Szeredi
Change of semantics in fuse_async_req_send/fuse_send_(read|write): these can now return error, in which case the 'end' callback isn't called, so the fuse_io_args object needs to be freed. Added verification that the return value is sane (less than or equal to the requested read/write size). Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: add simple background helperMiklos Szeredi
Create a helper named fuse_simple_background() that is similar to fuse_simple_request(). Unlike the latter, it returns immediately and calls the supplied 'end' callback when the reply is received. The supplied 'args' pointer is stored in 'fuse_req' which allows the callback to interpret the output arguments decoded from the reply. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert sync write to simple apiMiklos Szeredi
Extract a fuse_write_flags() helper that converts ki_flags relevant write to open flags. The other parts of fuse_send_write() aren't used in the fuse_perform_write() case. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: covert readpage to simple apiMiklos Szeredi
Derive fuse_io_args from struct fuse_args_pages. This will be used for both synchronous and asynchronous read/write requests. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: fuse_short_read(): don't take fuse_req as argumentMiklos Szeredi
This will allow the use of this function when converting to the simple api (which doesn't use fuse_req). Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert ioctl to simple apiMiklos Szeredi
fuse_simple_request() is converted to return length of last (instead of single) out arg, since FUSE_IOCTL_OUT has two out args, the second of which is variable length. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: move page allocMiklos Szeredi
fuse_req_pages_alloc() is moved to file.c, since its internal use by the device code will eventually be removed. Rename to fuse_pages_alloc() to signify that it's not only usable for fuse_req page array. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert readlink to simple apiMiklos Szeredi
Also turn BUG_ON into gracefully recovered WARN_ON. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: add pages to fuse_argsMiklos Szeredi
Derive fuse_args_pages from fuse_args. This is used to handle requests which use pages for input or output. The related flags are added to fuse_args. New FR_ALLOC_PAGES flags is added to indicate whether the page arrays in fuse_req need to be freed by fuse_put_request() or not. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert destroy to simple apiMiklos Szeredi
We can use the "force" flag to make sure the DESTROY request is always sent to userspace. So no need to keep it allocated during the lifetime of the filesystem. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: add nocreds to fuse_argsMiklos Szeredi
In some cases it makes no sense to set pid/uid/gid fields in the request header. Allow fuse_simple_background() to omit these. This is only required in the "force" case, so for now just WARN if set otherwise. Fold fuse_get_req_nofail_nopages() into its only caller. Comment is obsolete anyway. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert fuse_force_forget() to simple apiMiklos Szeredi
Move this function to the readdir.c where its only caller resides. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: add noreply to fuse_argsMiklos Szeredi
This will be used by fuse_force_forget(). We can expand fuse_request_send() into fuse_simple_request(). The FR_WAITING bit has already been set, no need to check. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: convert flush to simple apiMiklos Szeredi
Add 'force' to fuse_args and use fuse_get_req_nofail_nopages() to allocate the request in that case. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: simplify 'nofail' requestMiklos Szeredi
Instead of complex games with a reserved request, just use __GFP_NOFAIL. Both calers (flush, readdir) guarantee that connection was already initialized, so no need to wait for fc->initialized. Also remove unneeded clearing of FR_BACKGROUND flag. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: rearrange and resize fuse_args fieldsMiklos Szeredi
This makes the structure better packed. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: flatten 'struct fuse_args'Miklos Szeredi
...to make future expansion simpler. The hiearachical structure is a historical thing that does not serve any practical purpose. The generated code is excatly the same before and after the patch. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10fuse: fix deadlock with aio poll and fuse_iqueue::waitq.lockEric Biggers
When IOCB_CMD_POLL is used on the FUSE device, aio_poll() disables IRQs and takes kioctx::ctx_lock, then fuse_iqueue::waitq.lock. This may have to wait for fuse_iqueue::waitq.lock to be released by one of many places that take it with IRQs enabled. Since the IRQ handler may take kioctx::ctx_lock, lockdep reports that a deadlock is possible. Fix it by protecting the state of struct fuse_iqueue with a separate spinlock, and only accessing fuse_iqueue::waitq using the versions of the waitqueue functions which do IRQ-safe locking internally. Reproducer: #include <fcntl.h> #include <stdio.h> #include <sys/mount.h> #include <sys/stat.h> #include <sys/syscall.h> #include <unistd.h> #include <linux/aio_abi.h> int main() { char opts[128]; int fd = open("/dev/fuse", O_RDWR); aio_context_t ctx = 0; struct iocb cb = { .aio_lio_opcode = IOCB_CMD_POLL, .aio_fildes = fd }; struct iocb *cbp = &cb; sprintf(opts, "fd=%d,rootmode=040000,user_id=0,group_id=0", fd); mkdir("mnt", 0700); mount("foo", "mnt", "fuse", 0, opts); syscall(__NR_io_setup, 1, &ctx); syscall(__NR_io_submit, ctx, 1, &cbp); } Beginning of lockdep output: ===================================================== WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected 5.3.0-rc5 #9 Not tainted ----------------------------------------------------- syz_fuse/135 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: 000000003590ceda (&fiq->waitq){+.+.}, at: spin_lock include/linux/spinlock.h:338 [inline] 000000003590ceda (&fiq->waitq){+.+.}, at: aio_poll fs/aio.c:1751 [inline] 000000003590ceda (&fiq->waitq){+.+.}, at: __io_submit_one.constprop.0+0x203/0x5b0 fs/aio.c:1825 and this task is already holding: 0000000075037284 (&(&ctx->ctx_lock)->rlock){..-.}, at: spin_lock_irq include/linux/spinlock.h:363 [inline] 0000000075037284 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll fs/aio.c:1749 [inline] 0000000075037284 (&(&ctx->ctx_lock)->rlock){..-.}, at: __io_submit_one.constprop.0+0x1f4/0x5b0 fs/aio.c:1825 which would create a new lock dependency: (&(&ctx->ctx_lock)->rlock){..-.} -> (&fiq->waitq){+.+.} but this new dependency connects a SOFTIRQ-irq-safe lock: (&(&ctx->ctx_lock)->rlock){..-.} [...] Reported-by: syzbot+af05535bb79520f95431@syzkaller.appspotmail.com Reported-by: syzbot+d86c4426a01f60feddc7@syzkaller.appspotmail.com Fixes: bfe4037e722e ("aio: implement IOCB_CMD_POLL") Cc: <stable@vger.kernel.org> # v4.19+ Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-09-10ARM: 8906/1: drivers/amba: add reset control to amba bus probeDINH L NGUYEN
The primecell controller on some SoCs, i.e. SoCFPGA, is held in reset by default. Until recently, the DMA controller was brought out of reset by the bootloader(i.e. U-Boot). But a recent change in U-Boot, the peripherals that are not used are held in reset and are left to Linux to bring them out of reset. Add a mechanism for getting the reset property and de-assert the primecell module from reset if found. This is a not a hard fail if the reset property is not present in the device tree node, so the driver will continue to probe. Because there are different variants of the controller that may have multiple reset signals, the code will find all reset(s) specified and de-assert them. Signed-off-by: Dinh Nguyen <dinguyen@kernel.org> Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-09-10ARM: 8905/1: Emit __gnu_mcount_nc when using Clang 10.0.0 or newerNathan Chancellor
Currently, multi_v7_defconfig + CONFIG_FUNCTION_TRACER fails to build with clang: arm-linux-gnueabi-ld: kernel/softirq.o: in function `_local_bh_enable': softirq.c:(.text+0x504): undefined reference to `mcount' arm-linux-gnueabi-ld: kernel/softirq.o: in function `__local_bh_enable_ip': softirq.c:(.text+0x58c): undefined reference to `mcount' arm-linux-gnueabi-ld: kernel/softirq.o: in function `do_softirq': softirq.c:(.text+0x6c8): undefined reference to `mcount' arm-linux-gnueabi-ld: kernel/softirq.o: in function `irq_enter': softirq.c:(.text+0x75c): undefined reference to `mcount' arm-linux-gnueabi-ld: kernel/softirq.o: in function `irq_exit': softirq.c:(.text+0x840): undefined reference to `mcount' arm-linux-gnueabi-ld: kernel/softirq.o:softirq.c:(.text+0xa50): more undefined references to `mcount' follow clang can emit a working mcount symbol, __gnu_mcount_nc, when '-meabi gnu' is passed to it. Until r369147 in LLVM, this was broken and caused the kernel not to boot with '-pg' because the calling convention was not correct. Always build with '-meabi gnu' when using clang but ensure that '-pg' (which is added with CONFIG_FUNCTION_TRACER and its prereq CONFIG_HAVE_FUNCTION_TRACER) cannot be added with it unless this is fixed (which means using clang 10.0.0 and newer). Link: https://github.com/ClangBuiltLinux/linux/issues/35 Link: https://bugs.llvm.org/show_bug.cgi?id=33845 Link: https://github.com/llvm/llvm-project/commit/16fa8b09702378bacfa3d07081afe6b353b99e60 Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-09-10ARM: 8904/1: skip nomap memblocks while finding the lowmem/highmem boundaryChester Lin
adjust_lowmem_bounds() checks every memblocks in order to find the boundary between lowmem and highmem. However some memblocks could be marked as NOMAP so they are not used by kernel, which should be skipped while calculating the boundary. Signed-off-by: Chester Lin <clin@suse.com> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-09-10io_uring: optimize submit_and_wait APIJens Axboe
For some applications that end up using a submit-and-wait type of approach for certain batches of IO, we can make that a bit more efficient by allowing the application to block for the last IO submission. This prevents an async when we don't need it, as the application will be blocking for the completion event(s) anyway. Typical use cases are using the liburing io_uring_submit_and_wait() API, or just using io_uring_enter() doing both submissions and completions. As a specific example, RocksDB doing MultiGet() is sped up quite a bit with this change. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-09-10ALSA: firewire-tascam: check intermediate state of clock status and retryTakashi Sakamoto
2 bytes in MSB of register for clock status is zero during intermediate state after changing status of sampling clock in models of TASCAM FireWire series. The duration of this state differs depending on cases. During the state, it's better to retry reading the register for current status of the clock. In current implementation, the intermediate state is checked only when getting current sampling transmission frequency, then retry reading. This care is required for the other operations to read the register. This commit moves the codes of check and retry into helper function commonly used for operations to read the register. Fixes: e453df44f0d6 ("ALSA: firewire-tascam: add PCM functionality") Cc: <stable@vger.kernel.org> # v4.4+ Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20190910135152.29800-3-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-09-10ALSA: firewire-tascam: handle error code when getting current source of clockTakashi Sakamoto
The return value of snd_tscm_stream_get_clock() is ignored. This commit checks the value and handle error. Fixes: e453df44f0d6 ("ALSA: firewire-tascam: add PCM functionality") Cc: <stable@vger.kernel.org> # v4.4+ Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20190910135152.29800-2-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-09-10rtc: meson: mark PM functions as __maybe_unusedArnd Bergmann
The meson_vrtc_set_wakeup_time() function is only used by the PM functions and causes a warning when they are disabled: drivers/rtc/rtc-meson-vrtc.c:32:13: error: unused function 'meson_vrtc_set_wakeup_time' [-Werror,-Wunused-function] Remove the #ifdef around the callers and add a __maybe_unused annotation as a more reliable way to avoid these warnings. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20190906152438.1533833-1-arnd@arndb.de Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-09-10rtc: sc27xx: Remove clearing SPRD_RTC_POWEROFF_ALM_FLAG flagBaolin Wang
The SPRD_RTC_POWEROFF_ALM_FLAG flag is used to indicate if a poweroff alarm is set, which can power on the system when system in power-off status. And the bootloader will validate this flag to check if the booting mode is alarm booting mode, thus we should not clear this flag in kernel, instead bootloader will clear this flag after checking the booting mode. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Link: https://lore.kernel.org/r/1f75310242de75b14d8973538bf96efffb395daf.1567666894.git.baolin.wang@linaro.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-09-10libperf: Adopt perf_cpu_map__max() functionJiri Olsa
From 'perf stat', so that it can be used from multiple places. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Joe Mario <jmario@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20190902121255.536-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-10libperf: Add missing event.h file to install ruleJiri Olsa
So that this development header is properly installed and can be found by tools linking with libperf. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20190901124822.10132-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-10perf tests: Add libperf automated test for 'make -C tools/perf build-test'Jiri Olsa
Add a libperf build test, that is triggered when one does: $ make -C tools/perf build-test Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20190901124822.10132-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-10perf python: Add missing python/perf.so dependency for libperfJiri Olsa
The python/perf.so compilation needs libperf ready, otherwise it fails: $ make python/perf.so JOBS=1 BUILD: Doing 'make -j1' parallel build GEN python/perf.so gcc: error: /home/jolsa/kernel/linux-perf/tools/perf/lib/libperf.a: No such file or directory Fixing this with by adding libperf dependency. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20190901124822.10132-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-10ath9k: release allocated buffer if timed outNavid Emamdoost
In ath9k_wmi_cmd, the allocated network buffer needs to be released if timeout happens. Otherwise memory will be leaked. Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-09-10ath9k_htc: release allocated buffer if timed outNavid Emamdoost
In htc_config_pipe_credits, htc_setup_complete, and htc_connect_service if time out happens, the allocated buffer needs to be released. Otherwise there will be memory leak. Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-09-10ath9k: Remove unneeded variable to store return valuezhong jiang
ath9k_reg_rmw_single do not need return value to cope with different cases. And change functon return type to void. Signed-off-by: zhong jiang <zhongjiang@huawei.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-09-10ath10k: add reorder and change PN check logic for mac80211Wen Gong
For sdio chip, if the rssi is not good, then it have some retry, firmware will indicate the msdu list of a ppdu with a hole, it means it lost the hole msdu, after the msdu retry from AP, the hole msdu will indicate from firmware later. The hole msdu's PN check will fail and the hole msdu will be dropped. PN check fail example: Sequence number PN number PN check status 3814 6101 success 3815 6102 success 3816 6103 success 3818 6105 success 3819 6106 success 3820 6107 success 3817 6104 fail The correct logic is reorder the msdu list and then do PN check. ieee80211_rx_reorder_ampdu of mac80211 will do the reorer logic and then do PN check in ieee80211_rx_h_decrypt of mac80211. example after reorder: Sequence number PN number PN check status 3814 6101 success 3815 6102 success 3816 6103 success 3817 6104 success 3818 6105 success 3819 6106 success 3820 6107 success Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00017-QCARMSWP-1. Signed-off-by: Wen Gong <wgong@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-09-10ath10k: add mic bytes for pmf management packetWen Gong
For PMF case, the action,deauth,disassoc management need to encrypt by hardware, it need to reserve 8 bytes for encryption, otherwise the packet will be sent out with error format, then PMF case will fail. After add the 8 bytes, it will pass the PMF case. Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00005-QCARMSWP-1. Signed-off-by: Wen Gong <wgong@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-09-10Merge tag 'ipc-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull ipc regression fixes from Arnd Bergmann: "Fix ipc regressions from y2038 patches These are two regression fixes for bugs that got introduced during the system call rework that went into linux-5.1 but only bisected and fixed now: - One patch affects semtimedop() on many of the less common 32-bit architectures, this just needs a single-line bugfix. - The other affects only sparc64 and has a slightly more invasive workaround to apply the same change to sparc64 that was done to the generic code used everywhere else" * tag 'ipc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: ipc: fix sparc64 ipc() wrapper ipc: fix semtimedop for generic 32-bit architectures
2019-09-10platform/x86: asus-wmi: Refactor charge threshold to use the battery hooking APIKristian Klausen
At the same time use the official naming for the knobs. Tested on a Zenbook UX430UNR. Signed-off-by: Kristian Klausen <kristian@klausen.dk> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2019-09-10PCI: hv: Use bytes 4 and 5 from instance ID as the PCI domain numbersHaiyang Zhang
As recommended by Azure host team, the bytes 4, 5 have more uniqueness (info entropy) than bytes 8, 9 so use them as the PCI domain numbers. On older hosts, bytes 4, 5 can also be used -- no backward compatibility issues are introduced and the chance of collision is greatly reduced. In the rare cases of collision, the driver code detects and finds another number that is not in use. Suggested-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Sasha Levin <sashal@kernel.org>
2019-09-10posix-cpu-timers: Fix permission check regressionThomas Gleixner
The recent consolidation of the three permission checks introduced a subtle regression. For timer_create() with a process wide timer it returns the current task if the lookup through the PID which is encoded into the clockid results in returning current. That's broken because it does not validate whether the current task is the group leader. That was caused by the two different variants of permission checks: - posix_cpu_timer_get() allowed access to the process wide clock when the looked up task is current. That's not an issue because the process wide clock is in the shared sighand. - posix_cpu_timer_create() made sure that the looked up task is the group leader. Restore the previous state. Note, that these permission checks are more than questionable, but that's subject to follow up changes. Fixes: 6ae40e3fdcd3 ("posix-cpu-timers: Provide task validation functions") Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1909052314110.1902@nanos.tec.linutronix.de
2019-09-10Merge tag 'asoc-v5.4' of ↵Takashi Iwai
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next ASoC: Updates for v5.4 Quite a big update this time around, particularly in the core where we've had a lot of cleanups from Morimoto-san - there's not much functional change but quite a bit of modernization going on. We've also seen a lot of driver work, a lot of it cleanups but also some particular drivers. - Lots and lots of cleanups from Morimoto-san and Yue Haibing. - Lots of cleanups and enhancements to the Freescale, sunxi dnd Intel rivers. - Initial Sound Open Firmware suppot for i.MX8. - Removal of w90x900 and nuc900 drivers as the platforms are being removed. - New support for Cirrus Logic CS47L15 and CS47L92, Freescale i.MX 7ULP and 8MQ, Meson G12A and NXP UDA1334
2019-09-10gpiolib: acpi: make acpi_can_fallback_to_crs() staticDmitry Torokhov
It is not used outside gpiolib-acpi.c module, so there is no need to export it. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Link: https://lore.kernel.org/r/20190904172624.GA76617@dtor-ws Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2019-09-10gpiolib: of: fix fallback quirks handlingDmitry Torokhov
We should only try to execute fallback quirks handling when previous call returned -ENOENT, and not when we did not get -EPROBE_DEFER. The other errors should be treated as hard errors: we did find the GPIO description, but for some reason we failed to handle it properly. The fallbacks should only be executed when previous handlers returned -ENOENT, which means the mapping/description was not found. Also let's remove the explicit deferral handling when iterating through GPIO suffixes: it is not needed anymore as we will not be calling fallbacks for anything but -ENOENT. Fixes: df451f83e1fc ("gpio: of: fix Freescale SPI CS quirk handling") Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Link: https://lore.kernel.org/r/20190903231856.GA165165@dtor-ws Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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