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2015-01-08NVMe: Admin queue removal handlingKeith Busch1-14/+20
This protects admin queue access on shutdown. When the controller is disabled, the queue is frozen to prevent new entry, and unfrozen on resume, and fixes cq_vector signedness to not suspend a queue twice. Since unfreezing the queue makes it available for commands, it requires the queue be initialized, so this moves this part after that. Special handling is done when the device is unresponsive during shutdown. This can be optimized to not require subsequent commands to timeout, but saving that fix for later. This patch also removes the kill signals in this path that were left-over artifacts from the blk-mq conversion and no longer necessary. Signed-off-by: Keith Busch <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2015-01-08selftests/vm: fix link error for transhuge-stress testAndrey Skvortsov1-1/+1
add -lrt to fix undefined reference to `clock_gettime' error seen when the test is compiled using gcc 4.6.4. Signed-off-by: Andrey Skvortsov <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2015-01-08NVMe: Reference count admin queue usageKeith Busch1-14/+14
Since there is no gendisk associated with the admin queue, the driver needs to hold a reference to it until all open references to the controller are closed. This also combines queue cleanup with freeing the tag set since these should not be separate. Signed-off-by: Keith Busch <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2015-01-08NVMe: Start all requestsKeith Busch1-4/+12
Once the nvme callback is set for a request, the driver can start it and make it available for timeout handling. For timed out commands on a device that is not initialized, this fixes potential deadlocks that can occur on startup and shutdown when a device is unresponsive since they can now be cancelled. Asynchronous requests do not have any expected timeout, so these are using the new "REQ_NO_TIMEOUT" request flags. Signed-off-by: Keith Busch <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2015-01-08blk-mq: End unstarted requests on a dying queueKeith Busch1-1/+10
Requests that haven't been started prior to a queue dying can be ended in error without waiting for them to start and time out. Signed-off-by: Keith Busch <[email protected]> Added code comment to explain why this is done. Signed-off-by: Jens Axboe <[email protected]>
2015-01-08blk-mq: Allow requests to never expireKeith Busch3-1/+8
Some types of requests may be started that are not gauranteed to ever complete. This adds a request flag that a driver can use so mark the request as such. Signed-off-by: Keith Busch <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2015-01-08blk-mq: Add helper to abort requeued requestsJens Axboe2-0/+21
Adds a helper function a driver can use to abort requeued requests in case any are pending when h/w queues are being removed. Signed-off-by: Jens Axboe <[email protected]>
2015-01-08blk-mq: Let drivers cancel requeue_workKeith Busch2-0/+7
Kicking requeued requests will start h/w queues in a work_queue, which may alter the driver's requested state to temporarily stop them. This patch exports a method to cancel the q->requeue_work so a driver can be assured stopped h/w queues won't be started up before it is ready. Signed-off-by: Keith Busch <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2015-01-08blk-mq: Export if requests were startedKeith Busch2-0/+7
Drivers can iterate over all allocated request tags, but their callback needs a way to know if the driver started the request in the first place. Signed-off-by: Keith Busch <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2015-01-08blk-mq: Wake tasks entering queue on dyingKeith Busch1-0/+7
When the queue is set to dying, wake up tasks that are waiting on frozen queue so they realize it is dying and abandon their request. Signed-off-by: Keith Busch <[email protected]> Modified by me to add a code comment on the need for the wakeup. Signed-off-by: Jens Axboe <[email protected]>
2015-01-08perf hists browser: Fix segfault when showing callchainNamhyung Kim1-1/+1
When perf report on TUI shows callchain it checks first node has siblings to determine whether it needs to print percentage value. But it missed a case that first node is NULL. So sometimes it segfaults like below: $ perf top -g perf: Segmentation fault -------- backtrace -------- perf[0x4fcefb] /usr/lib/libc.so.6(+0x33b20)[0x7f2a35839b20] perf(rb_next+0x8)[0x47d3d8] perf[0x4f6058] perf[0x4f833b] perf[0x4f8610] perf[0x4f209e] perf(ui_browser__run+0x3a)[0x4f2e6a] perf[0x4f94ee] perf(perf_evlist__tui_browse_hists+0x94)[0x4fbbf4] perf[0x444d10] /usr/lib/libpthread.so.0(+0x7314)[0x7f2a37070314] /usr/lib/libc.so.6(clone+0x6d)[0x7f2a358ee5bd] $ addr2line -e `which perf` 0x4f6058 /home/namhyung/project/linux/tools/perf/ui/browsers/hists.c:553 I don't know why the backtrace didn't print some symbols.. Signed-off-by: Namhyung Kim <[email protected]> Fixes: 4087d11cd945 ("perf hists browser: Print overhead percent value for first-level callchain") Cc: Adrian Hunter <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-01-08perf callchain: Free callchains when hist entries are deletedNamhyung Kim3-0/+33
Markus reported that "perf top -g" can leak ~300MB per second on his machine. This is partly because it missed to free callchains when hist entries are deleted. Fix it. Reported-by: Markus Trippelsdorf <[email protected]> Signed-off-by: Namhyung Kim <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Markus Trippelsdorf <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/20141230053813.GD6081@sejong Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-01-08perf hists: Fix children sort key behaviorNamhyung Kim2-32/+35
When perf report --children resorts output fields, it tries to put caller above the callee. But this was only meaningful for a same thread and doing this requires callchain enabled. So fix its check before comparing the callchain depth. This also changes the hist accumulation tests: In test 3, xmalloc in bash thread should be above than other perf threads due to alphabetical order of comm string. Also it's under page_fault in bash thread since alphabetical order of dso name. The sys_perf_event_open in perf thread is put on the last line since it's self overhead is 0. In test 4, the sys_perf_event_open is put above other perf entries that have same children overhead since its callchain depth is smaller. Signed-off-by: Namhyung Kim <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2015-01-08x86/xen: avoid freeing static 'name' when kasprintf() failsVitaly Kuznetsov1-11/+5
In case kasprintf() fails in xen_setup_timer() we assign name to the static string "<timer kasprintf failed>". We, however, don't check that fact before issuing kfree() in xen_teardown_timer(), kernel is supposed to crash with 'kernel BUG at mm/slub.c:3341!' Solve the issue by making name a fixed length string inside struct xen_clock_event_device. 16 bytes should be enough. Suggested-by: Laszlo Ersek <[email protected]> Signed-off-by: Vitaly Kuznetsov <[email protected]> Signed-off-by: David Vrabel <[email protected]>
2015-01-08x86/xen: add extra memory for remapped frames during setupDavid Vrabel1-4/+9
If the non-RAM regions in the e820 memory map are larger than the size of the initial balloon, a BUG was triggered as the frames are remaped beyond the limit of the linear p2m. The frames are remapped into the initial balloon area (xen_extra_mem) but not enough of this is available. Ensure enough extra memory regions are added for these remapped frames. Signed-off-by: David Vrabel <[email protected]> Reviewed-by: Juergen Gross <[email protected]>
2015-01-08x86/xen: don't count how many PFNs are identity mappedDavid Vrabel1-18/+9
This accounting is just used to print a diagnostic message that isn't very useful. Signed-off-by: David Vrabel <[email protected]> Reviewed-by: Juergen Gross <[email protected]>
2015-01-08x86/xen: Free bootmem in free_p2m_page() during early bootBoris Ostrovsky1-3/+6
With recent changes in p2m we now have legitimate cases when p2m memory needs to be freed during early boot (i.e. before slab is initialized). Signed-off-by: Boris Ostrovsky <[email protected]> Reviewed-by: Juergen Gross <[email protected]> Signed-off-by: David Vrabel <[email protected]>
2015-01-08arm64/efi: add missing call to early_ioremap_reset()Ard Biesheuvel2-1/+2
The early ioremap support introduced by patch bf4b558eba92 ("arm64: add early_ioremap support") failed to add a call to early_ioremap_reset() at an appropriate time. Without this call, invocations of early_ioremap etc. that are done too late will go unnoticed and may cause corruption. This is exactly what happened when the first user of this feature was added in patch f84d02755f5a ("arm64: add EFI runtime services"). The early mapping of the EFI memory map is unmapped during an early initcall, at which time the early ioremap support is long gone. Fix by adding the missing call to early_ioremap_reset() to setup_arch(), and move the offending early_memunmap() to right after the point where the early mapping of the EFI memory map is last used. Fixes: f84d02755f5a ("arm64: add EFI runtime services") Cc: <[email protected]> Signed-off-by: Leif Lindholm <[email protected]> Signed-off-by: Ard Biesheuvel <[email protected]> Signed-off-by: Will Deacon <[email protected]>
2015-01-08s390/mm: avoid using pmd_to_page for !USE_SPLIT_PMD_PTLOCKSMartin Schwidefsky1-2/+3
pmd_to_page() is only available if USE_SPLIT_PMD_PTLOCKS is defined. The use of pmd_to_page in the gmap code can cause compile errors if NR_CPUS is smaller than SPLIT_PTLOCK_CPUS. Do not use pmd_to_page outside of USE_SPLIT_PMD_PTLOCKS sections. Reported-by: Mike Frysinger <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2015-01-08Merge tag 'perf-urgent-for-mingo' of ↵Ingo Molnar4-6/+75
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes from Arnaldo Carvalho de Melo: " - 'perf probe' should fall back to find probe point in symbols when failing to do so in a debuginfo file (Masami Hiramatsu) - Fix 'perf probe' crash in dwarf_getcfi_elf (Namhyung Kim) - Fix shell completion with 'perf list' --raw-dump option (Taesoo Kim) - Fix 'perf diff' to sort by baseline field by default (Namhyung Kim) " Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2015-01-08Merge tag 'amdkfd-fixes-2015-01-06' of ↵Dave Airlie8-167/+235
git://people.freedesktop.org/~gabbayo/linux into drm-fixes - Complete overhaul to the main IOCTL function, kfd_ioctl(), according to drm_ioctl() example. This includes changing the IOCTL definitions, so it breaks compatibility with previous versions of the userspace. However, because the kernel was not officialy released yet, and this the first kernel that includes amdkfd, I assume I can still do that at this stage. - A couple of bug fixes for the non-HWS path (used for bring-ups and debugging purposes only). * tag 'amdkfd-fixes-2015-01-06' of git://people.freedesktop.org/~gabbayo/linux: drm/amdkfd: rewrite kfd_ioctl() according to drm_ioctl() drm/amdkfd: reformat IOCTL definitions to drm-style drm/amdkfd: Do copy_to/from_user in general kfd_ioctl() drm/amdkfd: unmap VMID<-->PASID when relesing VMID (non-HWS) drm/radeon: Assign VMID to PASID for IH in non-HWS mode drm/radeon: do not leave queue acquired if timeout happens in kgd_hqd_destroy() drm/amdkfd: Load mqd to hqd in non-HWS mode drm/amd: Fixing typos in kfd<->kgd interface
2015-01-08Merge branch 'drm-fixes-3.19' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie5-12/+14
into drm-fixes some minor radeon fixes. * 'drm-fixes-3.19' of git://people.freedesktop.org/~agd5f/linux: drm/radeon: integer underflow in radeon_cp_dispatch_texture() drm/radeon: adjust default bapm settings for KV drm/radeon: properly filter DP1.2 4k modes on non-DP1.2 hw drm/radeon: fix sad_count check for dce3 drm/radeon: KV has three PPLLs (v2)
2015-01-08Merge branch 'linux-3.19' of ↵Dave Airlie8-33/+124
git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes - Fix BUG() on !SMP builds - Fix for OOPS on pre-NV50 that snuck into -next - MCP7[789A] hang fix where firmware hasn't already setup NISO pollers - NV4x IGP MSI disable, it doesn't appear to work correctly - Add GK208B to recognised boards (no code change aside from adding chipset recognition) * 'linux-3.19' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: drm/nouveau/nouveau: Do not BUG_ON(!spin_is_locked()) on UP drm/nv4c/mc: disable msi drm/nouveau/fb/ram/mcp77: enable NISO poller drm/nouveau/fb/ram/mcp77: use carveout reg to determine size drm/nouveau/fb/ram/mcp77: subclass nouveau_ram drm/nouveau: wake up the card if necessary during gem callbacks drm/nouveau/device: Add support for GK208B, resolves bug 86935 drm/nouveau: fix missing return statement in nouveau_ttm_tt_unpopulate drm/nouveau/bios: fix oops on pre-nv50 chipsets
2015-01-08ARM: shmobile: sh73a0 legacy: Set .control_parent for all irqpin instancesGeert Uytterhoeven1-0/+3
The sh73a0 INTC can't mask interrupts properly most likely due to a hardware bug. Set the .control_parent flag to delegate masking to the parent interrupt controller, like was already done for irqpin1. Without this, accessing the three-axis digital accelerometer ADXL345 on kzm9g through /dev/input/event1 causes an interrupt storm, which requires a power-cycle to recover from. This was inspired by a patch for arch/arm/boot/dts/sh73a0.dtsi from Laurent Pinchart <[email protected]>. Signed-off-by: Geert Uytterhoeven <[email protected]> Fixes: 341eb5465f67437a ("ARM: shmobile: INTC External IRQ pin driver on sh73a0") Signed-off-by: Simon Horman <[email protected]>
2015-01-07ARM: 8253/1: mm: use phys_addr_t type in map_lowmem() for kernel mem regionGrygorii Strashko1-2/+2
Now local variables kernel_x_start and kernel_x_end defined using 'unsigned long' type which is wrong because they represent physical memory range and will be calculated wrongly if LPAE is enabled. As result, all following code in map_lowmem() will not work correctly. For example, Keystone 2 boot is broken because kernel_x_start == 0x0000 0000 kernel_x_end == 0x0080 0000 instead of kernel_x_start == 0x0000 0008 0000 0000 kernel_x_end == 0x0000 0008 0080 0000 and as result whole low memory will be mapped with MT_MEMORY_RW permissions by code (start > kernel_x_end): } else if (start >= kernel_x_end) { map.pfn = __phys_to_pfn(start); map.virtual = __phys_to_virt(start); map.length = end - start; map.type = MT_MEMORY_RW; create_mapping(&map); } Hence, fix it by using phys_addr_t type for variables kernel_x_start and kernel_x_end. Tested-by: Murali Karicheri <[email protected]> Signed-off-by: Grygorii Strashko <[email protected]> Signed-off-by: Russell King <[email protected]>
2015-01-07ARM: 8249/1: mm: dump: don't skip regionsMark Rutland1-7/+2
Currently the arm page table dumping code starts dumping page tables from USER_PGTABLES_CEILING. This is unnecessary for skipping any entries related to userspace as the swapper_pg_dir does not contain such entries, and results in a couple of unfortuante side effects. Firstly, any kernel mappings which might exist below USER_PGTABLES_CEILING will not be accounted in the dump output. This masks any entries erroneously created below this address. Secondly, if the final page table entry walked is part of a valid mapping the page table dumping code will not log the region this entry is part of, as the final note_page call in walk_pgd will trigger an early return when 0 < USER_PGTABLES_CEILING. Luckily this isn't seen on contemporary systems as they typically don't have enough RAM to extend the linear mapping right to the end of the address space. Due to the way addr is constructed in the walk_* functions, it can never be less than USER_PGTABLES_CEILING when walking the page tables, so it is not necessary to avoid dereferencing invalid table addresses. The existing checks for st->current_prot and st->marker[1].start_address are sufficient to ensure we will not print and/or dereference garbage when trying to log information. This patch removes both problematic uses of USER_PGTABLES_CEILING from the arm page table dumping code, preventing both of these issues. We will now report any low mappings, and the final note_page call will not return early, ensuring all regions are logged. Signed-off-by: Mark Rutland <[email protected]> Cc: Steve Capper <[email protected]> Cc: Kees Cook <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
2015-01-07ARM: wire up execveat syscallRussell King2-0/+2
Signed-off-by: Russell King <[email protected]>
2015-01-07rpc: fix xdr_truncate_encode to handle buffer ending on page boundaryJ. Bruce Fields1-3/+3
A struct xdr_stream at a page boundary might point to the end of one page or the beginning of the next, but xdr_truncate_encode isn't prepared to handle the former. This can cause corruption of NFSv4 READDIR replies in the case that a readdir entry that would have exceeded the client's dircount/maxcount limit would have ended exactly on a 4k page boundary. You're more likely to hit this case on large directories. Other xdr_truncate_encode callers are probably also affected. Reported-by: Holger Hoffstätte <[email protected]> Tested-by: Holger Hoffstätte <[email protected]> Fixes: 3e19ce762b53 "rpc: xdr_truncate_encode" Cc: [email protected] Signed-off-by: J. Bruce Fields <[email protected]>
2015-01-07nfsd: fix fi_delegees leak when fi_had_conflict returns trueJeff Layton1-1/+1
Currently, nfs4_set_delegation takes a reference to an existing delegation and then checks to see if there is a conflict. If there is one, then it doesn't release that reference. Change the code to take the reference after the check and only if there is no conflict. Signed-off-by: Jeff Layton <[email protected]> Cc: [email protected] Signed-off-by: J. Bruce Fields <[email protected]>
2015-01-07blk-mq: get rid of ->cmd_size in the hardware queueJens Axboe2-3/+1
We store it in the tag set, we don't need it in the hardware queue. While removing cmd_size, place ->queue_num further down to avoid a hole on 64-bit archs. It's not used in any fast paths, so we can safely move it. Signed-off-by: Jens Axboe <[email protected]>
2015-01-07vfio-pci: Fix the check on pci device type in vfio_pci_probe()Wei Yang1-3/+1
Current vfio-pci just supports normal pci device, so vfio_pci_probe() will return if the pci device is not a normal device. While current code makes a mistake. PCI_HEADER_TYPE is the offset in configuration space of the device type, but we use this value to mask the type value. This patch fixs this by do the check directly on the pci_dev->hdr_type. Signed-off-by: Wei Yang <[email protected]> Signed-off-by: Alex Williamson <[email protected]> Cc: [email protected] # v3.6+
2015-01-07assoc_array: Include rcupdate.h for call_rcu() definitionPranith Kumar1-0/+1
Include rcupdate.h header to provide call_rcu() definition. This was implicitly being provided by slab.h file which include srcu.h somewhere in its include hierarchy which in-turn included rcupdate.h. Lately, tinification effort added support to remove srcu entirely because of which we are encountering build errors like lib/assoc_array.c: In function 'assoc_array_apply_edit': lib/assoc_array.c:1426:2: error: implicit declaration of function 'call_rcu' [-Werror=implicit-function-declaration] cc1: some warnings being treated as errors Fix these by including rcupdate.h explicitly. Signed-off-by: Pranith Kumar <[email protected]> Reported-by: Scott Wood <[email protected]>
2015-01-07ALSA: fireworks: fix an endianness bug for transaction lengthTakashi Sakamoto1-1/+1
Although the 't->length' is a big-endian value, it's used without any conversion. This means that the driver always uses 'length' parameter. Fixes: 555e8a8f7f14("ALSA: fireworks: Add command/response functionality into hwdep interface") Reported-by: Clemens Ladisch <[email protected]> Signed-off-by: Takashi Sakamoto <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2015-01-07ARM: dts: berlin: correct BG2Q's SM GPIO location.Jisheng Zhang1-30/+30
The gpio4 and gpio5 are in 0xf7fc0000 apb which is located in the SM domain. This patch moves gpio4 and gpio5 to the correct location. This patch also renames them as the following to match the names we internally used in marvell: gpio4 -> sm_gpio1 gpio5 -> sm_gpio0 porte -> portf portf -> porte This also matches what we did for BG2 and BG2CD's SM GPIO. Cc: [email protected] # 3.16+ Fixes: cedf57fc4f2f ("ARM: dts: berlin: add the BG2Q GPIO nodes") Signed-off-by: Jisheng Zhang <[email protected]> Signed-off-by: Sebastian Hesselbarth <[email protected]>
2015-01-07ARM: dts: berlin: add broken-cd and set bus width for eMMC in Marvell DMP DTJisheng Zhang1-0/+2
There's no card detection for the eMMC, so this patch adds the missing broken-cd property. This patch also sets bus width as 8 to add MMC_CAP_8_BIT_DATA in the Host capabilities. Cc: [email protected] # 3.16+ Fixes: 3047086dfd56 ("ARM: dts: berlin: enable SD card reader and eMMC for the BG2Q DMP") Signed-off-by: Jisheng Zhang <[email protected]> Signed-off-by: Sebastian Hesselbarth <[email protected]>
2015-01-07ARM: dts: berlin: fix io clk and add missing core clk for BG2Q sdhci2 hostJisheng Zhang1-1/+2
On BG2Q, the sdhci2 host uses nfcecc for "io" clk and nfc for "core" clk. The shdci2 can't work without this patch due to the "core" clk is gated. Cc: [email protected] # 3.16+ Fixes: 0d859a6a9d14 ("ARM: dts: berlin: add the SDHCI nodes for the BG2Q") Signed-off-by: Jisheng Zhang <[email protected]> Signed-off-by: Sebastian Hesselbarth <[email protected]>
2015-01-07thermal: rcar: change type of ctemp in rcar_thermal_update_temp()Yoshihiro Shimoda1-2/+2
Since the ctemp is used for rcar_thermal_write() in rcar_thermal_update_temp(), the type of 'ctemp' should be "u32" instead of "int". This patch also changes type of the helper variables 'old' and 'new'. Acked-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Yoshihiro Shimoda <[email protected]> Signed-off-by: Eduardo Valentin <[email protected]>
2015-01-07thermal: rcar: fix ENR register valueYoshihiro Shimoda1-3/+8
On R-Mobile APE6, since it has 3 thermal zones, ENR register has enable bits in bit 19-16, bit 11-8 and bit 3-0. However, on R-Car gen2, since it has 1 thermal zone, ENR register has enable bits in bit 3-0. (In other words, the write value should always be 0 for bit 31-4 of ENR register.) So, this patch fixes the ENR register value using I/O resource sets. Acked-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Yoshihiro Shimoda <[email protected]> Signed-off-by: Eduardo Valentin <[email protected]>
2015-01-07arm64: fix missing asm/io.h include in kernel/smp_spin_table.cPaul Walmsley1-0/+1
On next-20150105, defconfig compilation breaks with: arch/arm64/kernel/smp_spin_table.c:80:2: error: implicit declaration of function ‘ioremap_cache’ [-Werror=implicit-function-declaration] arch/arm64/kernel/smp_spin_table.c:92:2: error: implicit declaration of function ‘writeq_relaxed’ [-Werror=implicit-function-declaration] arch/arm64/kernel/smp_spin_table.c:101:2: error: implicit declaration of function ‘iounmap’ [-Werror=implicit-function-declaration] Fix by including asm/io.h, which contains definitions or prototypes for these macros or functions. This second version incorporates a comment from Mark Rutland <[email protected]> to keep the includes in alphabetical order by filename. Signed-off-by: Paul Walmsley <[email protected]> Cc: Paul Walmsley <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Will Deacon <[email protected]> Acked-by: Mark Rutland <[email protected]> Signed-off-by: Will Deacon <[email protected]>
2015-01-07arm64: fix missing asm/alternative.h include in kernel/module.cPaul Walmsley1-0/+1
On next-20150105, defconfig compilation breaks with: arch/arm64/kernel/module.c:408:4: error: implicit declaration of function ‘apply_alternatives’ [-Werror=implicit-function-declaration] Fix by including asm/alternative.h, where the apply_alternatives() prototype is declared. This second version incorporates a comment from Mark Rutland <[email protected]> to keep the includes in alphabetical order by filename. Signed-off-by: Paul Walmsley <[email protected]> Cc: Paul Walmsley <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Will Deacon <[email protected]> Acked-by: Mark Rutland <[email protected]> Signed-off-by: Will Deacon <[email protected]>
2015-01-07arm64: fix missing linux/bug.h include in asm/arch_timer.hPaul Walmsley1-0/+1
On next-20150105, defconfig compilation breaks with: ./arch/arm64/include/asm/arch_timer.h:112:2: error: implicit declaration of function ‘BUG’ [-Werror=implicit-function-declaration] Fix by including linux/bug.h, where the BUG macro is defined. This second version incorporates a comment from Mark Rutland <[email protected]> to keep the includes in alphabetical order by filename. Signed-off-by: Paul Walmsley <[email protected]> Cc: Paul Walmsley <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Will Deacon <[email protected]> Acked-by: Mark Rutland <[email protected]> Signed-off-by: Will Deacon <[email protected]>
2015-01-07arm64: fix missing asm/pgtable-hwdef.h include in asm/processor.hPaul Walmsley1-0/+1
On next-20150105, defconfig compilation breaks with: ./arch/arm64/include/asm/processor.h:47:32: error: ‘PHYS_MASK’ undeclared (first use in this function) Fix by including asm/pgtable-hwdef.h, where PHYS_MASK is defined. This second version incorporates a comment from Mark Rutland <[email protected]> to keep the includes in alphabetical order by filename. Signed-off-by: Paul Walmsley <[email protected]> Cc: Paul Walmsley <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Will Deacon <[email protected]> Acked-by: Mark Rutland <[email protected]> Signed-off-by: Will Deacon <[email protected]>
2015-01-07arm64: sanity checks: add missing AArch32 registersMark Rutland2-0/+15
We don't currently check a number of registers exposed to AArch32 guests (MVFR{0,1,2}_EL1 and ID_DFR0_EL1), despite the fact these describe AArch32 feature support exposed to userspace and KVM guests similarly to AArch64 registers which we do check. We do not expect these registers to vary across a set of CPUs. This patch adds said registers to the cpuinfo framework and sanity checks. No sanity check failures have been observed on a current ARMv8 big.LITTLE platform (Juno). Cc: Catalin Marinas <[email protected]> Reported-by: Suzuki K. Poulose <[email protected]> Signed-off-by: Suzuki K. Poulose <[email protected]> Signed-off-by: Mark Rutland <[email protected]> Signed-off-by: Will Deacon <[email protected]>
2015-01-07arm64: Remove unused prepare_to_copy()Tobias Klauser1-3/+0
prepare_to_copy() was removed from all architectures supported at that time in commit 55ccf3fe3f9a ("fork: move the real prepare_to_copy() users to arch_dup_task_struct()"). Remove it from arm64 as well. Signed-off-by: Tobias Klauser <[email protected]> Signed-off-by: Will Deacon <[email protected]>
2015-01-07arm64: Correct __NR_compat_syscalls for bpfMark Rutland1-1/+1
Commit 97b56be10352a70c (arm64: compat: Enable bpf syscall) made the usual mistake of forgetting to update __NR_compat_syscalls. Due to this, when el0_sync_compat calls el0_svc_naked, the test against sc_nr (__NR_compat_syscalls) will fail, and we'll call ni_sys, returning -ENOSYS to userspace. This patch bumps __NR_compat_syscalls appropriately, enabling the use of the bpf syscall from compat tasks. Due to the reorganisation of unistd{,32}.h as part of commit f3e5c847ec3d12b4 (arm64: Add __NR_* definitions for compat syscalls) it is not currently possible to include both headers and sanity-check the value of __NR_compat_syscalls at build-time to prevent this from happening again. Additional rework is required to make such niceties a possibility. Cc: Will Deacon <[email protected]> Acked-by: Catalin Marinas <[email protected]> Signed-off-by: Mark Rutland <[email protected]> Signed-off-by: Will Deacon <[email protected]>
2015-01-07vhost/net: length miscalculationMichael S. Tsirkin1-1/+1
commit 8b38694a2dc8b18374310df50174f1e4376d6824 vhost/net: virtio 1.0 byte swap had this chunk: - heads[headcount - 1].len += datalen; + heads[headcount - 1].len = cpu_to_vhost32(vq, len - datalen); This adds datalen with the wrong sign, causing guest panics. Fixes: 8b38694a2dc8b18374310df50174f1e4376d6824 Reported-by: Alex Williamson <[email protected]> Suggested-by: Greg Kurz <[email protected]> Signed-off-by: Michael S. Tsirkin <[email protected]>
2015-01-07pinctrl: st: Add irq_disable hook to st_gpio_irqchipPatrice CHOTARD1-0/+1
Currently disable_irq() doesn't work for pinctrl-st driver, due to missing irq_disable hook in the driver. disable_irq() is required only for level-triggered interrupts, which is not the case normally. Signed-off-by: Pankaj Dev <[email protected]> Signed-off-by: Patrice Chotard <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2015-01-07pinctrl: st: avoid multiple mutex lockFrancesco VIRLINZI1-1/+3
Using the sysfs inteface to inspect the pins configuration the system can walk around a path which acquires the same mutex twice. On STiH407 platform, for example : cat /sys/kernel/debug/pinctrl/920f080.pin-controller-front0/pinconf-pins hangs the kernel and never returns. With this patch the mutex is temporary freed. Signed-off-by: Francesco Virlinzi <[email protected]> Signed-off-by: Patrice Chotard <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2015-01-07gpio: dln2: Fix gpio output value in dln2_gpio_direction_output()Axel Lin1-4/+11
dln2_gpio_direction_output() ignored the state passed into it. Fix it. Also make dln2_gpio_pin_set_out_val return int, so we can check the error value. Signed-off-by: Axel Lin <[email protected]> Tested-by: Daniel Baluta <[email protected]> Acked-by: Alexandre Courbot <[email protected]> Reviewed-by: Octavian Purdila <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2015-01-07gpio: dln2: fix issue when an IRQ is unmasked then enabledOctavian Purdila1-46/+7
As noticed during suspend/resume operations, the IRQ can be unmasked then disabled in suspend and eventually enabled in resume, but without being unmasked. The current implementation does not take into account interactions between mask/unmask and enable/disable interrupts, and thus in the above scenarios the IRQs remain unactive. To fix this we removed the enable/disable operations as they fallback to mask/unmask anyway. We also remove the pending bitmaks as it is already done in irq_data (i.e. IRQS_PENDING). Signed-off-by: Octavian Purdila <[email protected]> Acked-by: Alexandre Courbot <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
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