- Jul 10, 2015
-
-
Peter Zijlstra authored
Mikulas reported his K6-3 not booting. This is because the static_key API confusion struck and bit Andy, this wants to be static_key_false(). Reported-by:
Mikulas Patocka <mpatocka@redhat.com> Tested-by:
Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: <stable@vger.kernel.org> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Cc: Vince Weaver <vince@deater.net> Cc: hillf.zj <hillf.zj@alibaba-inc.com> Fixes: a6673429 ("perf/x86: Add /sys/devices/cpu/rdpmc=2 to allow rdpmc for all tasks") Link: http://lkml.kernel.org/r/20150709172338.GC19282@twins.programming.kicks-ass.net Signed-off-by:
Ingo Molnar <mingo@kernel.org>
-
Ingo Molnar authored
Merge tag 'perf-urgent-for-mingo-2' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes from Arnaldo Carvalho de Melo: - Fix 'perf top -u username', where not enough memory per thread_map entry was being allocated nor was being initialized, causing a segfault (Arnaldo Carvalho de Melo) - Fix locking lockup using 32-bit compat vdso (Adrian Hunter) - Fix shadow declaration of 'close' with older build environments (Jiri Olsa) - Make the 'clean' target do a better job, removing some more temp files (Riku Voipio) - The python binding also has a MANIFEST like file where we list the files that need to be built and linked to form the resulting python shared object module file. And it has an entry for rbtree.c that still pointed to the one in the kernel sources, fix it by also removing one level of indirection so that it uses the tools/lib/rbtree.c copy. (Arnaldo Carvalho de Melo) - For the same reasons as for rbtree.c, copy the kernel lib/hweight.c file to tools/lib/, sanitizing it in the process to remove kernel specific stuff like EXPORT_SYMBOL() lines and the linux/export.h include reference, as that file doesn't exist anymore in tools/include/linux. (Arnaldo Carvalho de Melo) Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
Ingo Molnar <mingo@kernel.org>
-
Linus Torvalds authored
Merge hpfs updates from Mikulas Patocka. Mainly fstrim support, with some minor other cleanups. These were actually sent during the merge window, but I wanted to wait for the FSTRIM compat handling cleanup before applying them. Mikulas sent that earlier today. * emailed patches from Mikulas Patocka <mikulas@twibright.com>: hpfs: hpfs_error: Remove static buffer, use vsprintf extension %pV instead hpfs: kstrdup() out of memory handling hpfs: Remove unessary cast hpfs: add fstrim support
-
Joe Perches authored
Removing unnecessary static buffers is good. Use the vsprintf %pV extension instead. Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
Mikulas Patocka <mikulas@twibright.com> Cc: stable@vger.kernel.org # v2.6.36+ Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
Sanidhya Kashyap authored
There is a possibility of nothing being allocated to the new_opts in case of memory pressure, therefore return ENOMEM for such case. Signed-off-by:
Sanidhya Kashyap <sanidhya.gatech@gmail.com> Signed-off-by:
Mikulas Patocka <mikulas@twibright.com> Cc: stable@vger.kernel.org Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
Firo Yang authored
Avoid a pointless kmem_cache_alloc() return value cast in fs/hpfs/super.c::hpfs_alloc_inode() Signed-off-by:
Firo Yang <firogm@gmail.com> Signed-off-by:
Mikulas Patocka <mikulas@twibright.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
Mikulas Patocka authored
This patch adds support for fstrim to the HPFS filesystem. Signed-off-by:
Mikulas Patocka <mikulas@twibright.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-clientLinus Torvalds authored
Pull Ceph fixes from Sage Weil: "There is a fix for CephFS and RBD when used within containers/namespaces, and a fix for the address learning the client is supposed to do when initially talking to the Ceph cluster. There are also two patches updating MAINTAINERS. One breaks out the common Ceph code shared by fs/ceph and drivers/block/rbd.c into a separate entry with the appropriate maintainers listed. The second adds a second reference to the github tree where the Ceph client development takes place (before it is pushed to korg and then to you). The goal here is to move closer to a situation where Ilya Dryomov or one of the other maintainers can push things to you if I am unavailable. Ilya has done most of the work preparing branches for upstream recently; you should not be surprised to hear from him if I am trapped in some internet-less wasteland or hit by a bus or something. In the meantime, we'll work on getting him added to the kernel web of trust" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: MAINTAINERS: add secondary tree for ceph modules MAINTAINERS: update ceph entries libceph: treat sockaddr_storage with uninitialized family as blank libceph: enable ceph in a non-default network namespace
-
Arnaldo Carvalho de Melo authored
Instead of accessing it directly, as it uses EXPORT_SYMBOL, that has no meaning in tools/perf and because we removed the stubs for it, i.e. we removed the tools/include/linux/export.h file. This fixes the build for the detached tarball sources cases and removes one more source of entanglement with the kernel sources. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-oyqx541o7apa2cskjhcxi6nx@git.kernel.org Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
-
Arnaldo Carvalho de Melo authored
The python binding build process was still looking at the kernel rbtree.c file, so, when doing a in-tree build it would work, but when creating a tarball using tools/perf/MANIFEST as the contents list and then trying to build the resulting detached sources, it failed. Fix it by removing one level of indirection from rbtree.c in the tools/perf/util/python-ext-sources file. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-8u83c2k5guyhxdlkaaqis8k4@git.kernel.org Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
-
Mikulas Patocka authored
The FITRIM ioctl has the same arguments on 32-bit and 64-bit architectures, so we can add it to the list of compatible ioctls and drop it from compat_ioctl method of various filesystems. Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Ted Ts'o <tytso@google.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
Linus Torvalds authored
The firmware class uevent function accessed the "fw_priv->buf" buffer without the proper locking and testing for NULL. This is an old bug (looks like it goes back to 2012 and commit 1244691c : "firmware loader: introduce firmware_buf"), but for some reason it's triggering only now in 4.2-rc1. Shuah Khan is trying to bisect what it is that causes this to trigger more easily, but in the meantime let's just fix the bug since others are hitting it too (at least Ingo reports having seen it as well). Reported-and-tested-by:
Shuah Khan <shuahkh@osg.samsung.com> Acked-by:
Ming Lei <ming.lei@canonical.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
Kirill A. Shutemov authored
Reading page fault handler code I've noticed that under right circumstances kernel would map anonymous pages into file mappings: if the VMA doesn't have vm_ops->fault() and the VMA wasn't fully populated on ->mmap(), kernel would handle page fault to not populated pte with do_anonymous_page(). Let's change page fault handler to use do_anonymous_page() only on anonymous VMA (->vm_ops == NULL) and make sure that the VMA is not shared. For file mappings without vm_ops->fault() or shred VMA without vm_ops, page fault on pte_none() entry would lead to SIGBUS. Signed-off-by:
Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by:
Oleg Nesterov <oleg@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Willy Tarreau <w@1wt.eu> Cc: stable@vger.kernel.org Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
Sage Weil authored
The Ceph kernel code is primarily developed in the github tree, and only pushed to the korg tree before going to Linus. If Sage is unavailable and another maintainer needs to push something upstream, pull requests may originate from the github tree instead of Sage's korg tree. Signed-off-by:
Sage Weil <sage@redhat.com> Signed-off-by:
Ilya Dryomov <idryomov@gmail.com>
-
Sage Weil authored
- The Ceph common code is used by both fs/ceph and drivers/block/rbd. Add a separate maintainers entry. - Add Ilya as libceph maintainer and cephfs submaintainer. - Attribute Documentation/ABI/testing/sysfs-bus-rbd to rbd. - ceph-devel@vger.kernel.org should be L, not M in rbd entry. Signed-off-by:
Sage Weil <sage@redhat.com> Signed-off-by:
Ilya Dryomov <idryomov@gmail.com>
-
Ilya Dryomov authored
addr_is_blank() should return true if family is neither AF_INET nor AF_INET6. This is what its counterpart entity_addr_t::is_blank_ip() is doing and it is the right thing to do: in process_banner() we check if our address is blank and if it is "learn" it from our peer. As it is, we never learn our address and always send out a blank one. This goes way back to ceph.git commit dd732cbfc1c9 ("use sockaddr_storage; and some ipv6 support groundwork") from 2009. While at at, do not open-code ipv6_addr_any() and use INADDR_ANY constant instead of 0. Signed-off-by:
Ilya Dryomov <idryomov@gmail.com> Reviewed-by:
Sage Weil <sage@redhat.com>
-
Ilya Dryomov authored
Grab a reference on a network namespace of the 'rbd map' (in case of rbd) or 'mount' (in case of ceph) process and use that to open sockets instead of always using init_net and bailing if network namespace is anything but init_net. Be careful to not share struct ceph_client instances between different namespaces and don't add any code in the !CONFIG_NET_NS case. This is based on a patch from Hong Zhiguo <zhiguohong@tencent.com>. Signed-off-by:
Ilya Dryomov <idryomov@gmail.com> Reviewed-by:
Sage Weil <sage@redhat.com>
-
- Jul 09, 2015
-
-
Arnaldo Carvalho de Melo authored
When we started adding extra stuff per array entry, growing the size of those entries to more than sizeof(pid_t), we had to convert those sizeof operations to the more robust sizeof(map->map[0]) idiom, that is future proof, i.e. if/when we add more stuff to those entries, that expression will produce the new per-entry size. And besides that, we need to zero out those extra fields, that sometimes may not get filled, like when we couldn't care less about the comms, since we don't need those, but since we will try freeing it at thread_map__delete(), we better fix it. That is why a thread_map__realloc() was provided. But that method wasn't used in thread_map__new_by_uid(), fix it. Reported-by:
Ingo Molnar <mingo@kernel.org> Fixes: 792402fd ("perf thrad_map: Add comm string into array") Fixes: 9d7e8c3a ("perf tools: Add thread_map__(alloc|realloc) helpers") Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-6a0swlm6m8lnu3wpjv284hkb@git.kernel.org Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
-
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management and ACPI updates from Rafael Wysocki: "These are fixes on top of the previous PM+ACPI pull requests (including one fix for a 4.1 regression) and two commits adding _CLS-based device enumeration support to the ACPI core and the ATA subsystem that waited for the latest ACPICA changes to be merged. Specifics: - Fix for an ACPI resources management regression introduced during the 4.1 cycle (that unfortunately went into -stable) effectively reverting the bad commit along with the recent fixups on top of it and using an alternative approach to address the underlying issue (Rafael J Wysocki). - Fix for a memory leak and an incorrect return value in an error code path in the ACPI LPSS (Low-Power Subsystem) driver (Rafael J Wysocki). - Fix for a leftover dangling pointer in an error code path in the new wakeup IRQ support code (Rafael J Wysocki...
-
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tileLinus Torvalds authored
Pull arch/tile fix from Chris Metcalf: "This fix eliminates a "section mismatch" warning caused by the new __ex_table checking code in modpost" * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: modpost: work correctly with tile coldtext sections
-
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linuxLinus Torvalds authored
Pull module fix from Rusty Russell: "Single fix: missing rbtree removal in the module load failure path. Easy to trigger with bad params. Thanks to Peter Zijlstra and Arthur Marsh for going around on this one" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: module: Fix load_module() error path
-
Chris Metcalf authored
The tilegx and tilepro compilers use .coldtext for their unlikely executed text section name, so an __attribute__((cold)) function will (when compiled with higher optimization levels) land in the .coldtext section. Modify modpost to add .coldtext to the set of OTHER_TEXT_SECTIONS so we don't get warnings about referencing such a section in an __ex_table block, and then also modify arch/tile/lib/memcpy_user_64.c so that it uses plain ".coldtext" instead of ".coldtext.memcpy". The latter naming is a relic of an earlier use of -ffunction-sections, which we no longer use by default. Signed-off-by:
Chris Metcalf <cmetcalf@ezchip.com> Acked-by:
Rusty Russell <rusty@rustcorp.com.au>
-
Peter Zijlstra authored
The load_module() error path frees a module but forgot to take it out of the mod_tree, leaving a dangling entry in the tree, causing havoc. Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reported-by:
Arthur Marsh <arthur.marsh@internode.on.net> Tested-by:
Arthur Marsh <arthur.marsh@internode.on.net> Fixes: 93c2e105 ("module: Optimize __module_address() using a latched RB-tree") Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au>
-
Riku Voipio authored
The clean targets miss some .cmd and .d files. Signed-off-by:
Riku Voipio <riku.voipio@linaro.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: linux-kbuild@vger.kernel.org Link: http://lkml.kernel.org/r/1434631938-12681-1-git-send-email-riku.voipio@linaro.org Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
-
Linus Torvalds authored
The "fix" in commit 0b08c5e5 ("audit: Fix check of return value of strnlen_user()") didn't fix anything, it broke things. As reported by Steven Rostedt: "Yes, strnlen_user() returns 0 on fault, but if you look at what len is set to, than you would notice that on fault len would be -1" because we just subtracted one from the return value. So testing against 0 doesn't test for a fault condition, it tests against a perfectly valid empty string. Also fix up the usual braindamage wrt using WARN_ON() inside a conditional - make it part of the conditional and remove the explicit unlikely() (which is already part of the WARN_ON*() logic, exactly so that you don't have to write unreadable code. Reported-and-tested-by:
Steven Rostedt <rostedt@goodmis.org> Cc: Jan Kara <jack@suse.cz> Cc: Paul Moore <pmoore@redhat.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
- Jul 08, 2015
-
-
Jiri Olsa authored
Vinson reported shadow declaration of close introduced by the following commit: 106a94a0 perf stat: Introduce read_counters function Using close_counters name instead. Reported-by:
Vinson Lee <vlee@twopensource.com> Signed-off-by:
Jiri Olsa <jolsa@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Fixes: 106a94a0 ("perf stat: Introduce read_counters function") Link: http://lkml.kernel.org/r/20150708111731.GA3512@krava.redhat.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
-
git://ftp.arm.linux.org.uk/~rmk/linux-armLinus Torvalds authored
Pull ARM updates from Russell King: "These are late by a week; they should have been merged during the merge window, but unfortunately, the ARM kernel build/boot farms were indicating random failures, and it wasn't clear whether the cause was something in these changes or something during the merge window. This is a set of merge window fixes with some documentation additions" * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: ARM: avoid unwanted GCC memset()/memcpy() optimisations for IO variants ARM: pgtable: document mapping types ARM: io: convert ioremap*() to functions ARM: io: fix ioremap_wt() implementation ARM: io: document ARM specific behaviour of ioremap*() implementations ARM: fix lockdep unannotated irqs-off warning ARM: 8397/1: fix vdsomunge not to depend on glibc specific error.h ARM: add helpful message when truncating physical memory ARM: add help text for HIGHPTE configuration entry ARM: fix DEBUG_SET_MODULE_RONX build dependencies ARM: 8396/1: use phys_addr_t in pfn_to_kaddr() ARM: 8394/1: update memblock limit after mapping lowmem ARM: 8393/1: smp: Fix suspicious RCU usage with ipi tracepoints
-
Tomas Winkler authored
In function mei_nfc_host_exit mei_cl_remove_device cannot be called under the device mutex as device removing flow invokes the device driver remove handler that calls in turn to mei_cl_disable_device which naturally acquires the device mutex. Also remove mei_cl_bus_remove_devices which has the same issue, but is never executed as currently the only device on the mei client bus is NFC and a new device cannot be easily added till the bus revamp is completed. This fixes regression caused by commit be9b720a ("mei_phy: move all nfc logic from mei driver to nfc") Prior to this change the nfc driver remove handler called to no-op disable function while actual nfc device was disabled directly from the mei driver. Reported-by:
Linus Torvalds <torvalds@linux-foundation.org> Acked-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by:
Tomas Winkler <tomas.winkler@intel.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
-
Rafael J. Wysocki authored
* acpi-scan: ata: ahci_platform: Add ACPI _CLS matching ACPI / scan: Add support for ACPI _CLS device matching
-
Rafael J. Wysocki authored
* acpi-pnp: ACPI / PNP: Reserve ACPI resources at the fs_initcall_sync stage * acpi-soc: ACPI / LPSS: Fix up acpi_lpss_create_device() * pm-domains: PM / Domains: Avoid infinite loops in attach/detach code * pm-sleep: PM / hibernate: clarify resume documentation
-
Rafael J. Wysocki authored
* pm-wakeirq: PM / wakeirq: Avoid setting power.wakeirq too hastily
-
- Jul 07, 2015
-
-
Adrian Hunter authored
The __machine__findnew_compat() function is called only from __machine__findnew_vdso_compat() which is called only from machine__findnew_vdso() which already holds machine->dsos.lock, so remove locking from __machine__findnew_compat(). This manifests itself tracing 32-bit programs with a 64-bit perf. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1436267618-20521-1-git-send-email-adrian.hunter@intel.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
-
Russell King authored
-
Rafael J. Wysocki authored
If dev_pm_attach_wake_irq() fails, the device's power.wakeirq field should not be set to point to the struct wake_irq passed to that function, as that object will be freed going forward. For this reason, make dev_pm_attach_wake_irq() first call device_wakeup_attach_irq() and only set the device's power.wakeirq field if that's successful. That requires device_wakeup_attach_irq() to be called under the device's power.lock lock, but since dev_pm_attach_wake_irq() is the only caller of it, the requisite changes are easy to make. Fixes: 4990d4fe (PM / Wakeirq: Add automated device wake IRQ handling) Reported-by:
Felipe Balbi <balbi@ti.com> Tested-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: - fix the perf build, by fixing the rbtree.c sharing bug between kernel and tools/perf by creating a local copy of rbtree.c (more will be done for v4.3) - fix an AUX buffer (Intel-PT support) refcounting bug - fix copy_from_user_nmi() return value" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86: Fix copy_from_user_nmi() return if range is not ok perf: Fix AUX buffer refcounting tools: Copy rbtree_augmented.h from the kernel tools: Move rbtree.h from tools/perf/ tools: Copy lib/rbtree.c to tools/lib/ perf tools: Copy rbtree.h from the kernel tools: Adopt {READ,WRITE_ONCE} from the kernel
-
Suthikulpanit, Suravee authored
This patch adds ACPI supports for AHCI platform driver, which uses _CLS method to match the device. The following is an example of ASL structure in DSDT for a SATA controller, which contains _CLS package to be matched by the ahci_platform driver: Device (AHC0) // AHCI Controller { Name(_HID, "AMDI0600") Name (_CCA, 1) Name (_CLS, Package (3) { 0x01, // Base Class: Mass Storage 0x06, // Sub-Class: serial ATA 0x01, // Interface: AHCI }) Name (_CRS, ResourceTemplate () { Memory32Fixed (ReadWrite, 0xE0300000, 0x00010000) Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive,,,) { 387 } }) } Also, since ATA driver should not require PCI support for ATA_ACPI, this patch removes dependency in the driver/ata/Kconfig. Acked-by:
Tejun Heo <tj@kernel.org> Acked-by:
Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by:
Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by:
Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-
Suthikulpanit, Suravee authored
Device drivers typically use ACPI _HIDs/_CIDs listed in struct device_driver acpi_match_table to match devices. However, for generic drivers, we do not want to list _HID for all supported devices. Also, certain classes of devices do not have _CID (e.g. SATA, USB). Instead, we can leverage ACPI _CLS, which specifies PCI-defined class code (i.e. base-class, subclass and programming interface). This patch adds support for matching ACPI devices using the _CLS method. To support loadable module, current design uses _HID or _CID to match device's modalias. With the new way of matching with _CLS this would requires modification to the current ACPI modalias key to include _CLS. This patch appends PCI-defined class-code to the existing ACPI modalias as following. acpi:<HID>:<CID1>:<CID2>:..:<CIDn>:<bbsspp>: E.g: # cat /sys/devices/platform/AMDI0600:00/modalias acpi:AMDI0600:010601: where bb is th base-class code, ss is te sub-class code, and pp is the programming interface code Since there would not be _HID/_CID in the ACPI matching table of the driver, this patch adds a field to acpi_device_id to specify the matching _CLS. static const struct acpi_device_id ahci_acpi_match[] = { { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) }, {}, }; In this case, the corresponded entry in modules.alias file would be: alias acpi*:010601:* ahci_platform Acked-by:
Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by:
Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by:
Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-
Uwe Geuder authored
it was not the whole truth that kernel mode cannot be used with swap on LVM Signed-off-by:
Uwe Geuder <linuxkernel2015-ugeuder@snkmail.com> Acked-by:
Pavel Machek <pavel@ucw.cz> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-
Geert Uytterhoeven authored
If pm_genpd_{add,remove}_device() keeps on failing with -EAGAIN, we end up with an infinite loop in genpd_dev_pm_{at,de}tach(). This may happen due to a genpd.prepared_count imbalance. This is a bug elsewhere, but it will result in a system lock up, possibly during reboot of an otherwise functioning system. To avoid this, put a limit on the maximum number of loop iterations, using an exponential back-off mechanism. If the limit is reached, the operation will just fail. An error message is already printed. Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-
Rafael J. Wysocki authored
Fix a return value (which should be a negative error code) and a memory leak (the list allocated by acpi_dev_get_resources() needs to be freed on ioremap() errors too) in acpi_lpss_create_device() introduced by commit 4483d59e 'ACPI / LPSS: check the result of ioremap()'. Fixes: 4483d59e 'ACPI / LPSS: check the result of ioremap()' Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Cc: 4.0+ <stable@vger.kernel.org> # 4.0+ Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-