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* virtio_ring: virtqueue_add_sgs, to add multiple sgs.Rusty Russell2013-03-201-63/+157
| | | | | | | | | | | | | | | | | | | | | | | | | | virtio_scsi can really use this, to avoid the current hack of copying the whole sg array. Some other things get slightly neater, too. This causes a slowdown in virtqueue_add_buf(), which is implemented as a wrapper. This is addressed in the next patches. for i in `seq 50`; do /usr/bin/time -f 'Wall time:%e' ./vringh_test --indirect --eventidx --parallel --fast-vringh; done 2>&1 | stats --trim-outliers: Before: Using CPUS 0 and 3 Guest: notified 0, pinged 39009-39063(39062) Host: notified 39009-39063(39062), pinged 0 Wall time:1.700000-1.950000(1.723542) After: Using CPUS 0 and 3 Guest: notified 0, pinged 39062-39063(39063) Host: notified 39062-39063(39063), pinged 0 Wall time:1.760000-2.220000(1.789167) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Reviewed-by: Wanlong Gao <gaowanlong@cn.fujitsu.com> Reviewed-by: Asias He <asias@redhat.com>
* caif_virtio: Introduce caif over virtioErwan Yvin2013-03-203-0/+802
| | | | | | | | | | | | | | | | | | | | | | | | | | Add the CAIF Virtio shared memory driver for talking to a modem. This CAIF Link layer communicates to the modem over shared memory. It is implemented as a virtio_driver. The underlying virtio device is managed by the remoteproc framework. The Virtio queue is used for transmitting data to the modem, and the new vringh is used for receiving data. Genalloc is used for managing the shared memory used for TX data. The default dma-alloc-coherent allocator can only allocate whole pages, and this wastes too much shared memory. Flow control is implemented by stopping the TX-queues if the virtio queues go full or we run out of memory. Queued are reopened when queues are below the watermark. NAPI is used in RX path, and a dedicated tasklet is used for releasing TX buffers. Signed-off-by: Erwan Yvin <erwan.yvin@stericsson.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (minor fixes)
* vringh: host-side implementation of virtio rings.Rusty Russell2013-03-205-1/+1019
| | | | | | | | | | | | Getting use of virtio rings correct is tricky, and a recent patch saw an implementation of in-kernel rings (as separate from userspace). This abstracts the business of dealing with the virtio ring layout from the access (userspace or direct); to do this, we use function pointers, which gcc inlines correctly. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Michael S. Tsirkin <mst@redhat.com>
* virtio_ring: expose virtio barriers for use in vringh.Rusty Russell2013-03-201-27/+6
| | | | | | The host side of ring needs this logic too. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* tools/virtio: fix build for 3.8Michael S. Tsirkin2013-03-201-1/+3
| | | | | Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* virtio-blk: emit udev event when device is resizedMilos Vyletel2013-03-121-0/+2
| | | | | | | | | | | | | | | | | | | | | When virtio-blk device is resized from host (using block_resize from QEMU) emit KOBJ_CHANGE uevent to notify guest about such change. This allows user to have custom udev rules which would take whatever action if such event occurs. As a proof of concept I've created simple udev rule that automatically resize filesystem on virtio-blk device. ACTION=="change", KERNEL=="vd*", \ ENV{RESIZE}=="1", \ ENV{ID_FS_TYPE}=="ext[3-4]", \ RUN+="/sbin/resize2fs /dev/%k" ACTION=="change", KERNEL=="vd*", \ ENV{RESIZE}=="1", \ ENV{ID_FS_TYPE}=="LVM2_member", \ RUN+="/sbin/pvresize /dev/%k" Signed-off-by: Milos Vyletel <milos.vyletel@sde.cz> Tested-by: Asias He <asias@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (minor simplification)
* virtio-scsi: use pr_err() instead of printk()Wanlong Gao2013-03-121-4/+4
| | | | | | | | Convert the virtio-scsi driver to use pr_err() instead of printk(). Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* lguest: fix paths in commentsWanlong Gao2013-03-061-3/+2
| | | | | | | | After commit 07fe997, lguest tool has already moved from Documentation/virtual/lguest/ to tools/lguest/. Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* Merge tag 'stable/for-linus-3.9-rc1-tag' of ↵Linus Torvalds2013-03-033-48/+39
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull Xen bug-fixes from Konrad Rzeszutek Wilk: - Update the Xen ACPI memory and CPU hotplug locking mechanism. - Fix PAT issues wherein various applications would not start - Fix handling of multiple MSI as AHCI now does it. - Fix ARM compile failures. * tag 'stable/for-linus-3.9-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xenbus: fix compile failure on ARM with Xen enabled xen/pci: We don't do multiple MSI's. xen/pat: Disable PAT using pat_enabled value. xen/acpi: xen cpu hotplug minor updates xen/acpi: xen memory hotplug minor updates
| * xenbus: fix compile failure on ARM with Xen enabledSteven Noonan2013-03-011-0/+1
| | | | | | | | | | | | | | | | | | | | Adding an include of linux/mm.h resolves this: drivers/xen/xenbus/xenbus_client.c: In function ‘xenbus_map_ring_valloc_hvm’: drivers/xen/xenbus/xenbus_client.c:532:66: error: implicit declaration of function ‘page_to_section’ [-Werror=implicit-function-declaration] CC: stable@vger.kernel.org Signed-off-by: Steven Noonan <steven@uplinklabs.net> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| * xen/acpi: xen cpu hotplug minor updatesLiu Jinsong2013-02-251-22/+12
| | | | | | | | | | | | | | | | | | | | | | | | Recently at native Rafael did some cleanup for acpi, say, drop acpi_bus_add, remove unnecessary argument of acpi_bus_scan, and run acpi_bus_scan under acpi_scan_lock. This patch does similar cleanup for xen cpu hotplug, removing redundant logic, and adding lock. Signed-off-by: Liu Jinsong <jinsong.liu@intel.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| * xen/acpi: xen memory hotplug minor updatesLiu Jinsong2013-02-251-26/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Dan Carpenter found current xen memory hotplug logic has potential issue: at func acpi_memory_get_device() *mem_device = acpi_driver_data(device); while the device may be NULL and then dereference. At native side, Rafael recently updated acpi_memory_get_device(), dropping acpi_bus_add, adding lock, and avoiding above issue. This patch updates xen memory hotplug logic accordingly, removing redundant logic, adding lock, and avoiding dereference. Signed-off-by: Liu Jinsong <jinsong.liu@intel.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* | Merge branch 'for-linus' of ↵Linus Torvalds2013-03-032-17/+13
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull more VFS bits from Al Viro: "Unfortunately, it looks like xattr series will have to wait until the next cycle ;-/ This pile contains 9p cleanups and fixes (races in v9fs_fid_add() etc), fixup for nommu breakage in shmem.c, several cleanups and a bit more file_inode() work" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: constify path_get/path_put and fs_struct.c stuff fix nommu breakage in shmem.c cache the value of file_inode() in struct file 9p: if v9fs_fid_lookup() gets to asking server, it'd better have hashed dentry 9p: make sure ->lookup() adds fid to the right dentry 9p: untangle ->lookup() a bit 9p: double iput() in ->lookup() if d_materialise_unique() fails 9p: v9fs_fid_add() can't fail now v9fs: get rid of v9fs_dentry 9p: turn fid->dlist into hlist 9p: don't bother with private lock in ->d_fsdata; dentry->d_lock will do just fine more file_inode() open-coded instances selinux: opened file can't have NULL or negative ->f_path.dentry (In the meantime, the hlist traversal macros have changed, so this required a semantic conflict fixup for the newly hlistified fid->dlist)
| * | more file_inode() open-coded instancesAl Viro2013-02-272-17/+13
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2013-03-035-10/+16
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull second set of s390 patches from Martin Schwidefsky: "The main part of this merge are Heikos uaccess patches. Together with commit 09884964335e ("mm: do not grow the stack vma just because of an overrun on preceding vma") the user string access is hopefully fixed for good. In addition some bug fixes and two cleanup patches." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/module: fix compile warning qdio: remove unused parameters s390/uaccess: fix kernel ds access for page table walk s390/uaccess: fix strncpy_from_user string length check input: disable i8042 PC Keyboard controller for s390 s390/dis: Fix invalid array size s390/uaccess: remove pointless access_ok() checks s390/uaccess: fix strncpy_from_user/strnlen_user zero maxlen case s390/uaccess: shorten strncpy_from_user/strnlen_user s390/dasd: fix unresponsive device after all channel paths were lost s390/mm: ignore change bit for vmemmap s390/page table dumper: add support for change-recording override bit
| * | | qdio: remove unused parametersStefan Raspl2013-02-283-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove unused function parameters. Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | input: disable i8042 PC Keyboard controller for s390Heiko Carstens2013-02-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Just add s390 to the list of architectures that don't want this driver. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | s390/dasd: fix unresponsive device after all channel paths were lostStefan Haberland2013-02-281-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Failfast bit was set incorrectly. Use set_bit to enable failfast. Reviewed-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | | Merge branch 'fixes-for-3.9-latest' of ↵Linus Torvalds2013-03-031-3/+12
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull second round of PARISC updates from Helge Deller: "The most important fix in this branch is the switch of io_setup, io_getevents and io_submit syscalls to use the available compat syscalls when running 32bit userspace on 64bit kernel. Other than that it's mostly removal of compile warnings." * 'fixes-for-3.9-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: fix redefinition of SET_PERSONALITY parisc: do not install modules when installing kernel parisc: fix compile warnings triggered by atomic_sub(sizeof(),v) parisc: check return value of down_interruptible() in hp_sdc_rtc.c parisc: avoid unitialized variable warning in pa_memcpy() parisc: remove unused variable 'compat_val' parisc: switch to compat_functions of io_setup, io_getevents and io_submit parisc: select ARCH_WANT_FRAME_POINTERS
| * | | | parisc: check return value of down_interruptible() in hp_sdc_rtc.cHelge Deller2013-03-021-3/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | additionally comment out unused code (which may be used later) Signed-off-by: Helge Deller <deller@gmx.de>
* | | | | Merge tag 'metag-v3.9-rc1-v4' of ↵Linus Torvalds2013-03-036-0/+1417
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag Pull new ImgTec Meta architecture from James Hogan: "This adds core architecture support for Imagination's Meta processor cores, followed by some later miscellaneous arch/metag cleanups and fixes which I kept separate to ease review: - Support for basic Meta 1 (ATP) and Meta 2 (HTP) core architecture - A few fixes all over, particularly for symbol prefixes - A few privilege protection fixes - Several cleanups (setup.c includes, split out a lot of metag_ksyms.c) - Fix some missing exports - Convert hugetlb to use vm_unmapped_area() - Copy device tree to non-init memory - Provide dma_get_sgtable()" * tag 'metag-v3.9-rc1-v4' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag: (61 commits) metag: Provide dma_get_sgtable() metag: prom.h: remove declaration of metag_dt_memblock_reserve() metag: copy devicetree to non-init memory metag: cleanup metag_ksyms.c includes metag: move mm/init.c exports out of metag_ksyms.c metag: move usercopy.c exports out of metag_ksyms.c metag: move setup.c exports out of metag_ksyms.c metag: move kick.c exports out of metag_ksyms.c metag: move traps.c exports out of metag_ksyms.c metag: move irq enable out of irqflags.h on SMP genksyms: fix metag symbol prefix on crc symbols metag: hugetlb: convert to vm_unmapped_area() metag: export clear_page and copy_page metag: export metag_code_cache_flush_all metag: protect more non-MMU memory regions metag: make TXPRIVEXT bits explicit metag: kernel/setup.c: sort includes perf: Enable building perf tools for Meta metag: add boot time LNKGET/LNKSET check metag: add __init to metag_cache_probe() ...
| * | | | | metag: Internal and external irqchipsJames Hogan2013-03-023-0/+1213
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Meta core internal interrupts (from HWSTATMETA and friends) are vectored onto the TR1 core trigger for the current thread. This is demultiplexed in irq-metag.c to individual Linux IRQs for each internal interrupt. External SoC interrupts (from HWSTATEXT and friends) are vectored onto the TR2 core trigger for the current thread. This is demultiplexed in irq-metag-ext.c to individual Linux IRQs for each external SoC interrupt. The external irqchip has devicetree bindings for configuring the number of irq banks and the type of masking available. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Rob Landley <rob@landley.net> Cc: Dom Cobley <popcornmix@gmail.com> Cc: Simon Arlott <simon@fire.lp0.eu> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: devicetree-discuss@lists.ozlabs.org Cc: linux-doc@vger.kernel.org
| * | | | | metag: Time keepingJames Hogan2013-03-023-0/+204
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add time keeping code for metag. Meta hardware threads have 2 timers. The background timer (TXTIMER) is used as a free-running time base, and the interrupt timer (TXTIMERI) is used for the timer interrupt. Both counters traditionally count at approximately 1MHz. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de>
* | | | | | Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds2013-03-031-1/+1
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull late ARM updates from Russell King: "Here is the late set of ARM updates for this merge window; in here is: - The ARM parts of the broadcast timer support, core parts merged through tglx's tree. This was left over from the previous merge to allow the dependency on tglx's tree to be resolved. - A fix to the VFP code which shows up on Raspberry Pi's, as well as fixing the fallout from a previous commit in this area. - A number of smaller fixes scattered throughout the ARM tree" * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: ARM: Fix broken commit 0cc41e4a21d43 corrupting kernel messages ARM: fix scheduling while atomic warning in alignment handling code ARM: VFP: fix emulation of second VFP instruction ARM: 7656/1: uImage: Error out on build of multiplatform without LOADADDR ARM: 7640/1: memory: tegra_ahb_enable_smmu() depends on TEGRA_IOMMU_SMMU ARM: 7654/1: Preserve L_PTE_VALID in pte_modify() ARM: 7653/2: do not scale loops_per_jiffy when using a constant delay clock ARM: 7651/1: remove unused smp_timer_broadcast #define
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| *-. \ \ \ \ \ Merge branches 'devel-stable', 'fixes' and 'mmci' into for-linusRussell King2013-03-03116-937/+1210
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| | * | | | | | | ARM: 7640/1: memory: tegra_ahb_enable_smmu() depends on TEGRA_IOMMU_SMMUHiroshi Doyu2013-02-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New SoC, Tegra114 also uses SMMU. Change tegra_ahb_enable_smmu()'s dependency from ARCH_TEGRA_3x_SOC to TEGRA_IOMMU_SMMU. No need to edit whenever a new Tegra SoC comes. The following combination caused build error, which this patch fixes. CONFIG_ARCH_TEGRA_2x_SOC=y CONFIG_ARCH_TEGRA_114_SOC=y drivers/iommu/tegra-smmu.c:485: undefined reference to gra_ahb_enable_smmu' Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | | | | | | | Merge tag 'char-misc-3.9-rc1' of ↵Linus Torvalds2013-03-033-8/+10
|\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc patch from Greg Kroah-Hartman: "Here is one remaining patch for 3.9-rc1. It is for the hyper-v drivers, and had to wait until some other patches went in through the x86 tree." Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> * tag 'char-misc-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: Drivers: hv: vmbus: Use the new infrastructure for delivering VMBUS interrupts
| * | | | | | | | | Drivers: hv: vmbus: Use the new infrastructure for delivering VMBUS interruptsK. Y. Srinivasan2013-02-273-8/+10
| | |_|_|_|_|_|/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the infrastructure for delivering VMBUS interrupts using a special vector. With this patch, we can now properly handle the VMBUS interrupts that can be delivered on any CPU. Also, turn on interrupt load balancing as well. This patch requires the infrastructure that was implemented in the patch: X86: Handle Hyper-V vmbus interrupts as special hypervisor interrupts Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | | | | | | | Merge tag 'usb-3.9-rc1' of ↵Linus Torvalds2013-03-031-15/+14
|\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB patch revert from Greg Kroah-Hartman: "Here is one remaining USB patch for 3.9-rc1, it reverts a 3.8 patch that has caused a lot of regressions for some VIA EHCI controllers." * tag 'usb-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: USB: EHCI: revert "remove ASS/PSS polling timeout"
| * | | | | | | | | USB: EHCI: revert "remove ASS/PSS polling timeout"Alan Stern2013-02-261-15/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch (as1649) reverts commit 55bcdce8a8228223ec4d17d8ded8134ed265d2c5 (USB: EHCI: remove ASS/PSS polling timeout). That commit was written under the assumption that some controllers may take a very long time to turn off their async and periodic schedules. It now appears that in fact the schedules do get turned off reasonably quickly, but some controllers occasionally leave the schedules' status bits turned on and consequently ehci-hcd can't tell that the schedules are off. VIA controllers in particular have this problem. ehci-hcd tells the hardware to turn off the async schedule, the schedule does get turned off, but the status bit remains on. Since the EHCI spec requires that the schedules not be re-enabled until the previous disable has taken effect, with an unlimited timeout the async schedule never gets turned back on. The resulting symptom is that the system is unable to communicate with USB devices. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-and-tested-by: Ronald <ronald645@gmail.com> Reported-and-tested-by: Paul Hartman <paul.hartman@gmail.com> Reported-and-tested-by: Dieter Nützel <dieter@nuetzel-hh.de> Reported-and-tested-by: Jean Delvare <khali@linux-fr.org> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | | | | | | | | Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds2013-03-0320-849/+795
|\ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull watchdog updates from Wim Van Sebroeck: "This contains: - fixes and improvements - devicetree bindings - conversion to watchdog generic framework of the following drivers: - booke_wdt - bcm47xx_wdt.c - at91sam9_wdt - Removal of old STMP3xxx driver - Addition of following new drivers: - new driver for STMP3xxx and i.MX23/28 - Retu watchdog driver" * git://www.linux-watchdog.org/linux-watchdog: (30 commits) watchdog: sp805_wdt depends on ARM watchdog: davinci_wdt: update to devm_* API watchdog: davinci_wdt: use devm managed clk get watchdog: at91rm9200: add DT support watchdog: add timeout-sec property binding watchdog: at91sam9_wdt: Convert to use the watchdog framework watchdog: omap_wdt: Add option nowayout watchdog: core: dt: add support for the timeout-sec dt property watchdog: bcm47xx_wdt.c: add hard timer watchdog: bcm47xx_wdt.c: rename wdt_time to timeout watchdog: bcm47xx_wdt.c: rename ops methods watchdog: bcm47xx_wdt.c: use platform device watchdog: bcm47xx_wdt.c: convert to watchdog core api watchdog: Convert BookE watchdog driver to watchdog infrastructure watchdog: s3c2410_wdt: Use devm_* functions watchdog: remove old STMP3xxx driver watchdog: add new driver for STMP3xxx and i.MX23/28 rtc: stmp3xxx: add wdt-accessor function watchdog: introduce retu_wdt driver watchdog: intel_scu_watchdog: fix Kconfig dependency ...
| * | | | | | | | | | watchdog: sp805_wdt depends on ARMAlessandro Rubini2013-03-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SP805 driver is only used by the Spear machines, and uses writel_relaxed, which is not available on all architectures. The dependency from CONFIG_ARM avoids compilation problems under randomconfig when CONFIG_ARM_AMBA is enabled for x86 builds. Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@st.com> Signed-off-by: Davide Ciminaghi <ciminaghi@gnudd.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: davinci_wdt: update to devm_* APIKumar, Anil2013-03-011-21/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the code to use devm_* API so that driver core will manage resources. Signed-off-by: Kumar, Anil <anilkumar.v@ti.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: davinci_wdt: use devm managed clk getMrugesh Katepallewar2013-03-011-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Get the clock using devm_clk_get(). Signed-off-by: Mrugesh Katepallewar <mrugesh.mk@ti.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: at91rm9200: add DT supportJoachim Eastwood2013-03-012-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add DT support for at91rm9200_wdt. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: add timeout-sec property bindingFabio Porcedda2013-03-014-15/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | this patchset add the timeout-sec property to the following drivers: orion_wdt, pnx4008_wdt, s3c2410_wdt and at91sam9_wdt. The at91sam9_wdt is tested on evk-pr3, the other drivers are compile tested only. Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Wolfram Sang <w.sang@pengutronix.de> Cc: Masanari Iida <standby24x7@gmail.com> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Andrew Victor <linux@maxim.org.za> Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: at91sam9_wdt: Convert to use the watchdog frameworkWenyou Yang2013-03-012-119/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to Documentation/watchdog/convert_drivers_to_kernel_api.txt, remove the file_operations struct, miscdevice, and obsolete includes Since the at91sam watchdog inherent characteristics, add the watchdog operations: at91wdt_start, at91wdt_stop and at91wdt_ping. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: linux-watchdog@vger.kernel.org Cc: linux-kernel@vger.kernel.org
| * | | | | | | | | | watchdog: omap_wdt: Add option nowayoutPali Rohár2013-03-011-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Like other watchdog drivers, this patch adds new option nowayout which overwrite WATCHDOG_NOWAYOUT. Signed-off-by: Pali Rohar <pali.rohar@gmail.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: core: dt: add support for the timeout-sec dt propertyFabio Porcedda2013-03-012-11/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for watchdog drivers to initialize/set the timeout field of the watchdog_device structure. The timeout field is initialised either with the module timeout parameter value (if valid) or with the timeout-sec dt property (if valid). If both are invalid the initial value is unchanged. Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: bcm47xx_wdt.c: add hard timerHauke Mehrtens2013-03-011-6/+63
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The more recent devices have a watchdog timer which could be configured for over 2 hours and not just 2 seconds like the first generation devices. For those devices do not use the extra software timer, but directly program the time into the register. This will automatically be used if the timer supports more than a minute. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: bcm47xx_wdt.c: rename wdt_time to timeoutHauke Mehrtens2013-03-011-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rename wdt_time to timeout to name it like the other watchdog driver do it. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: bcm47xx_wdt.c: rename ops methodsHauke Mehrtens2013-03-011-18/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rename the methods registered to struct watchdog_ops bcm47xx_wdt_ops in order to add an other struct watchdog_ops using different ops in the next patch. Also rename WDT_MAX_TIME to WDT_SOFTTIMER_MAX. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: bcm47xx_wdt.c: use platform deviceHauke Mehrtens2013-03-011-78/+78
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of accessing the function to set the watchdog timer directly, register a platform driver the platform could register to use this watchdog driver. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: bcm47xx_wdt.c: convert to watchdog core apiHauke Mehrtens2013-03-012-130/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert the bcm47xx_wdt.c driver to the new watchdog core api. The nowayout parameter is now added unconditionally to the module. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: Convert BookE watchdog driver to watchdog infrastructureGuenter Roeck2013-03-012-120/+66
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: s3c2410_wdt: Use devm_* functionsJingoo Han2013-03-011-33/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use devm_* functions to make cleanup paths more simple. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: remove old STMP3xxx driverWolfram Sang2013-03-013-298/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that the new driver is in place, we can remove the old one. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: add new driver for STMP3xxx and i.MX23/28Wolfram Sang2013-03-013-0/+122
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the existing STMP3xxx driver because it has enough drawbacks that a rewrite is apropriate. The new driver is designed to use the watchdog framework which makes it a lot smaller and avoids open coding the watchdog API again. It also uses now an explicitly exported function from the RTC driver to set up its registers (the old driver silently reused the hopefully(!) already remapped RTC registers). Also, this driver is mach independent, while the old one depends on a mach replaced by another one a year ago. Since the user interface is still the standard watchdog API, users don't need to adapt. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | rtc: stmp3xxx: add wdt-accessor functionWolfram Sang2013-03-011-0/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This RTC also includes a watchdog timer. Provide an accessor function for setting the watchdog timeout value which will be picked up by a watchdog driver. Also register the platform_device for the watchdog here to get the boot-time dependencies right. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | | | | | | | watchdog: introduce retu_wdt driverAaro Koskinen2013-03-013-0/+191
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce Retu watchdog driver. Cc: linux-watchdog@vger.kernel.org Acked-by: Felipe Balbi <balbi@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 07:08:22 +0100