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* Merge android-4.4.187 (8eb3d65) into msm-4.4Srinivasarao P2019-08-07
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * refs/heads/tmp-8eb3d65 Linux 4.4.187 ceph: hold i_ceph_lock when removing caps for freeing inode drivers/pps/pps.c: clear offset flags in PPS_SETPARAMS ioctl sched/fair: Don't free p->numa_faults with concurrent readers Bluetooth: hci_uart: check for missing tty operations media: radio-raremono: change devm_k*alloc to k*alloc media: cpia2_usb: first wake up, then free in disconnect ISDN: hfcsusb: checking idx of ep configuration tcp: reset sk_send_head in tcp_write_queue_purge ipv6: check sk sk_type and protocol early in ip_mroute_set/getsockopt mm, vmstat: make quiet_vmstat lighter vmstat: Remove BUG_ON from vmstat_update access: avoid the RCU grace period for the temporary subjective credentials powerpc/tm: Fix oops on sigreturn on systems without TM ALSA: hda - Add a conexant codec entry to let mute led work ALSA: line6: Fix wrong altsetting for LINE6_PODHD500_1 hpet: Fix division by zero in hpet_time_div() x86/speculation/mds: Apply more accurate check on hypervisor platform x86/sysfb_efi: Add quirks for some devices with swapped width and height usb: pci-quirks: Correct AMD PLL quirk detection usb: wusbcore: fix unbalanced get/put cluster_id locking/lockdep: Hide unused 'class' variable locking/lockdep: Fix lock used or unused stats error mm/mmu_notifier: use hlist_add_head_rcu() 9p: pass the correct prototype to read_cache_page mm/kmemleak.c: fix check for softirq context sh: prevent warnings when using iounmap powerpc/eeh: Handle hugepages in ioremap space mailbox: handle failed named mailbox channel request f2fs: avoid out-of-range memory access perf test mmap-thread-lookup: Initialize variable to suppress memory sanitizer warning kallsyms: exclude kasan local symbols on s390 serial: sh-sci: Fix TX DMA buffer flushing and workqueue races powerpc/4xx/uic: clear pending interrupt after irq type/pol change um: Silence lockdep complaint about mmap_sem mfd: arizona: Fix undefined behavior mfd: core: Set fwnode for created devices recordmcount: Fix spurious mcount entries on powerpc iio: iio-utils: Fix possible incorrect mask calculation PCI: sysfs: Ignore lockdep for remove attribute powerpc/pci/of: Fix OF flags parsing for 64bit BARs usb: gadget: Zero ffs_io_data phy: renesas: rcar-gen2: Fix memory leak at error paths drm/virtio: Add memory barriers for capset cache. tty: serial: msm_serial: avoid system lockup condition tty/serial: digicolor: Fix digicolor-usart already registered warning memstick: Fix error cleanup path of memstick_init tty: serial: cpm_uart - fix init when SMC is relocated pinctrl: rockchip: fix leaked of_node references tty: max310x: Fix invalid baudrate divisors calculator usb: core: hub: Disable hub-initiated U1/U2 drm/panel: simple: Fix panel_simple_dsi_probe nfsd: Fix overflow causing non-working mounts on 1 TB machines nfsd: fix performance-limiting session calculation nfsd: give out fewer session slots as limit approaches nfsd: increase DRC cache limit NFSv4: Fix open create exclusive when the server reboots elevator: fix truncation of icq_cache_name net: bridge: stp: don't cache eth dest pointer before skb pull net: bridge: mcast: fix stale ipv6 hdr pointer when handling v6 query net: bridge: mcast: fix stale nsrcs pointer in igmp3/mld2 report handling bonding: validate ip header before check IPPROTO_IGMP tcp: Reset bytes_acked and bytes_received when disconnecting netrom: hold sock when setting skb->destructor netrom: fix a memory leak in nr_rx_frame() sky2: Disable MSI on ASUS P6T nfc: fix potential illegal memory access net: neigh: fix multiple neigh timer scheduling net: bcmgenet: use promisc for unsupported filters ipv4: don't set IPv6 only flags to IPv4 addresses caif-hsi: fix possible deadlock in cfhsi_exit_module() bnx2x: Prevent load reordering in tx completion processing dm bufio: fix deadlock with loop device usb: Handle USB3 remote wakeup for LPM enabled devices correctly Bluetooth: Add SMP workaround Microsoft Surface Precision Mouse bug intel_th: msu: Fix single mode with disabled IOMMU eCryptfs: fix a couple type promotion bugs powerpc/watchpoint: Restore NV GPRs while returning from exception powerpc/32s: fix suspend/resume when IBATs 4-7 are used parisc: Fix kernel panic due invalid values in IAOQ0 or IAOQ1 gpu: ipu-v3: ipu-ic: Fix saturation bit offset in TPMEM coda: pass the host file in vma->vm_file on mmap floppy: fix out-of-bounds read in copy_buffer floppy: fix invalid pointer dereference in drive_name floppy: fix out-of-bounds read in next_valid_format floppy: fix div-by-zero in setup_format_params take floppy compat ioctls to sodding floppy.c PCI: Do not poll for PME if the device is in D3cold 9p/virtio: Add cleanup path in p9_virtio_init padata: use smp_mb in padata_reorder to avoid orphaned padata jobs drm/nouveau/i2c: Enable i2c pads & busses during preinit KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed media: coda: Remove unbalanced and unneeded mutex unlock media: v4l2: Test type instead of cfg->type in v4l2_ctrl_new_custom() ALSA: seq: Break too long mutex context in the write loop lib/scatterlist: Fix mapping iterator when sg->offset is greater than PAGE_SIZE NFSv4: Handle the special Linux file open access mode tracing/snapshot: Resize spare buffer if size changed regulator: s2mps11: Fix buck7 and buck8 wrong voltages Input: gtco - bounds check collection indent level crypto: arm64/sha2-ce - correct digest for empty data in finup crypto: arm64/sha1-ce - correct digest for empty data in finup crypto: ghash - fix unaligned memory access in ghash_setkey() Bluetooth: validate BLE connection interval updates Bluetooth: Check state in l2cap_disconnect_rsp Bluetooth: 6lowpan: search for destination address in all peers Bluetooth: hci_bcsp: Fix memory leak in rx_skb bcache: check c->gc_thread by IS_ERR_OR_NULL in cache_set_flush() EDAC: Fix global-out-of-bounds write when setting edac_mc_poll_msec ixgbe: Check DDM existence in transceiver before access rslib: Fix handling of of caller provided syndrome rslib: Fix decoding of shortened codes ath10k: fix PCIE device wake up failed mt7601u: fix possible memory leak when the device is disconnected x86/build: Add 'set -e' to mkcapflags.sh to delete broken capflags.c mt7601u: do not schedule rx_tasklet when the device has been disconnected media: coda: increment sequence offset for the last returned frame media: coda: fix mpeg2 sequence number handling acpi/arm64: ignore 5.1 FADTs that are reported as 5.0 timer_list: Guard procfs specific code ntp: Limit TAI-UTC offset media: i2c: fix warning same module names EDAC/sysfs: Fix memory leak when creating a csrow object vhost_net: disable zerocopy by default perf evsel: Make perf_evsel__name() accept a NULL argument xfrm: fix sa selector validation rcu: Force inlining of rcu_read_lock() bpf: silence warning messages in core regmap: fix bulk writes on paged registers gpio: omap: ensure irq is enabled before wakeup gpio: omap: fix lack of irqstatus_raw0 for OMAP4 perf test 6: Fix missing kvm module load for s390 s390/qdio: handle PENDING state for QEBSM devices net: axienet: Fix race condition causing TX hang net: fec: Do not use netdev messages too early cpupower : frequency-set -r option misses the last cpu in related cpu list media: wl128x: Fix some error handling in fm_v4l2_init_video_device() locking/lockdep: Fix merging of hlocks with non-zero references tua6100: Avoid build warnings. net: phy: Check against net_device being NULL media: staging: media: davinci_vpfe: - Fix for memory leak if decoder initialization fails. xfrm: Fix xfrm sel prefix length validation af_key: fix leaks in key_pol_get_resp and dump_sp. signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig net: stmmac: dwmac1000: Clear unused address entries media: vpss: fix a potential NULL pointer dereference media: marvell-ccic: fix DMA s/g desc number calculation crypto: talitos - fix skcipher failure due to wrong output IV media: dvb: usb: fix use after free in dvb_usb_device_exit batman-adv: fix for leaked TVLV handler. ath: DFS JP domain W56 fixed pulse type 3 RADAR detection ath6kl: add some bounds checking ath9k: Check for errors when reading SREV register ath10k: Do not send probe response template for mesh dmaengine: imx-sdma: fix use-after-free on probe error path MIPS: fix build on non-linux hosts MIPS: ath79: fix ar933x uart parity mode f2fs: use EINVAL for superblock with invalid magic f2fs: fix to read source block before invalidating it f2fs: remove redundant check from f2fs_setflags_common() f2fs: use generic checking and prep function for FS_IOC_SETFLAGS ANDROID: overlayfs: Fix a regression in commit b24be4acd ANDROID: xfrm: remove in_compat_syscall() checks ANDROID: enable CONFIG_RTC_DRV_TEST on cuttlefish BACKPORT: binder: Set end of SG buffer area properly. f2fs: improve print log in f2fs_sanity_check_ckpt() f2fs: avoid out-of-range memory access f2fs: fix to avoid long latency during umount f2fs: allow all the users to pin a file f2fs: support swap file w/ DIO f2fs: allocate blocks for pinned file f2fs: fix is_idle() check for discard type f2fs: add a rw_sem to cover quota flag changes f2fs: set SBI_NEED_FSCK for xattr corruption case f2fs: use generic EFSBADCRC/EFSCORRUPTED f2fs: Use DIV_ROUND_UP() instead of open-coding f2fs: print kernel message if filesystem is inconsistent f2fs: introduce f2fs_<level> macros to wrap f2fs_printk() f2fs: avoid get_valid_blocks() for cleanup f2fs: ioctl for removing a range from F2FS f2fs: only set project inherit bit for directory f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags f2fs: Add option to limit required GC for checkpoint=disable f2fs: Fix accounting for unusable blocks f2fs: Fix root reserved on remount f2fs: Lower threshold for disable_cp_again f2fs: fix sparse warning f2fs: fix f2fs_show_options to show nodiscard mount option f2fs: add error prints for debugging mount failure f2fs: fix to do sanity check on segment bitmap of LFS curseg f2fs: add missing sysfs entries in documentation f2fs: fix to avoid deadloop if data_flush is on f2fs: always assume that the device is idle under gc_urgent f2fs: add bio cache for IPU f2fs: allow ssr block allocation during checkpoint=disable period f2fs: fix to check layout on last valid checkpoint park Conflicts: drivers/net/wireless/ath/ath10k/hw.c fs/ecryptfs/crypto.c mm/vmstat.c Change-Id: Ic268e845f4992a9dbdf5c985cfe9359a56a5c72e Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
| * drivers/pps/pps.c: clear offset flags in PPS_SETPARAMS ioctlMiroslav Lichvar2019-08-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 5515e9a6273b8c02034466bcbd717ac9f53dab99 upstream. The PPS assert/clear offset corrections are set by the PPS_SETPARAMS ioctl in the pps_ktime structs, which also contain flags. The flags are not initialized by applications (using the timepps.h header) and they are not used by the kernel for anything except returning them back in the PPS_GETPARAMS ioctl. Set the flags to zero to make it clear they are unused and avoid leaking uninitialized data of the PPS_SETPARAMS caller to other applications that have a read access to the PPS device. Link: http://lkml.kernel.org/r/20190702092251.24303-1-mlichvar@redhat.com Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Rodolfo Giometti <giometti@enneenne.com> Cc: Greg KH <greg@kroah.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | pps-gpio: Add new property to use system time timestamp for PPS GPIOGustavo Solaira2017-10-23
| | | | | | | | | | | | | | | | | | If the device tree property "use-system-time-ts" is defined then the timestamp used for PPS events will be the system time, otherwise it will be the monotonic boot time. Change-Id: I92fab1d8861e1d652fcb68066b417f44c1f8e29b Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>
* | pps-gpio: Timestamp alignment with boottimeNaresh Munagala2017-04-06
|/ | | | | | | | | | | | GPS driver which makes use of PPS timestamp expects time with respect to boot time. Existing pps_get_ts function doesn't return time from the boot so replaced this function with get_monotonic_boottime function which returns elapsed time from the boot. Change-Id: I8f656a1c4ef43f6314d4ab295a177125bcc8195e CRs-Fixed: 1012438 Signed-off-by: Naresh Munagala <nareshm@codeaurora.org>
* pps: do not crash when failed to registerJiri Slaby2016-08-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 368301f2fe4b07e5fb71dba3cc566bc59eb6705f upstream. With this command sequence: modprobe plip modprobe pps_parport rmmod pps_parport the partport_pps modules causes this crash: BUG: unable to handle kernel NULL pointer dereference at (null) IP: parport_detach+0x1d/0x60 [pps_parport] Oops: 0000 [#1] SMP ... Call Trace: parport_unregister_driver+0x65/0xc0 [parport] SyS_delete_module+0x187/0x210 The sequence that builds up to this is: 1) plip is loaded and takes the parport device for exclusive use: plip0: Parallel port at 0x378, using IRQ 7. 2) pps_parport then fails to grab the device: pps_parport: parallel port PPS client parport0: cannot grant exclusive access for device pps_parport pps_parport: couldn't register with parport0 3) rmmod of pps_parport is then killed because it tries to access pardev->name, but pardev (taken from port->cad) is NULL. So add a check for NULL in the test there too. Link: http://lkml.kernel.org/r/20160714115245.12651-1-jslaby@suse.cz Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ntp/pps: use y2038 safe types in pps_event_timeArnd Bergmann2015-10-01
| | | | | | | | | | | | | | | | | | The pps_event_time uses two 'timespec' structures internally, which suffer from the y2038 problem. The uses of this structure are fairly self-contained in the pps code, so this replaces them all at once. Unfortunately, this includes the sfc ethernet driver aside from the pps subsystem, so we change that one as well. Both touch the same data structure, and there probably is no good way to split the patch into smaller units. Acked-by: Richard Cochran <richardcochran@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: John Stultz <john.stultz@linaro.org>
* ntp/pps: use timespec64 for hardpps()Arnd Bergmann2015-10-01
| | | | | | | | | | | | | | | | | | | | There is only one user of the hardpps function in the kernel, so it makes sense to atomically change it over to using 64-bit timestamps for y2038 safety. In the hardpps implementation, we also need to change the pps_normtime structure, which is similar to struct timespec and also requires a 64-bit seconds portion. This introduces two temporary variables in pps_kc_event() to do the conversion, they will be removed again in the next step, which seemed preferable to having a larger patch changing it all at the same time. Acked-by: Richard Cochran <richardcochran@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: John Stultz <john.stultz@linaro.org>
* pps: clients: drop owner assignment from platform_driversWolfram Sang2014-10-20
| | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* drivers/pps/clients/pps-gpio.c: remove redundant of_match_ptrSachin Kamat2013-11-13
| | | | | | | | | | The data structure of_match_ptr() protects is always compiled in. Hence of_match_ptr() is not needed. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Remove GENERIC_HARDIRQ config optionMartin Schwidefsky2013-09-13
| | | | | | | | After the last architecture switched to generic hard irqs the config options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code for !CONFIG_GENERIC_HARDIRQS can be removed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* drivers/pps/clients/pps-gpio.c: remove unnecessary platform_set_drvdata()Jingoo Han2013-09-11
| | | | | | | | | | | The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PPS: convert class code to use dev_groupsGreg Kroah-Hartman2013-08-19
| | | | | | | | | The dev_attrs field of struct class is going away soon, dev_groups should be used instead. This converts the pps class code to use the correct field. Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* pps-gpio: add device-tree binding and supportJan Luebbe2013-07-03
| | | | | | | | | | | | | | | | | Instead of allocating a struct pps_gpio_platform_data in the DT case, store the necessary information in struct pps_gpio_device_data itself. This avoids an additional allocation and the ifdef. It also gets rid of some indirection. Also use dev_err instead of pr_err in the changed code. Signed-off-by: Jan Luebbe <jlu@pengutronix.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Rodolfo Giometti <giometti@enneenne.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/pps/clients/pps-gpio.c: convert to module_platform_driverJan Luebbe2013-07-03
| | | | | | | | | This removes some boilerplate code (no functional changes). Signed-off-by: Jan Luebbe <jlu@pengutronix.de> Acked-by: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/pps/clients/pps-gpio.c: convert to devm_* helpersJan Luebbe2013-07-03
| | | | | | | Signed-off-by: Jan Luebbe <jlu@pengutronix.de> Acked-by: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2013-05-01
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull VFS updates from Al Viro, Misc cleanups all over the place, mainly wrt /proc interfaces (switch create_proc_entry to proc_create(), get rid of the deprecated create_proc_read_entry() in favor of using proc_create_data() and seq_file etc). 7kloc removed. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (204 commits) don't bother with deferred freeing of fdtables proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h proc: Make the PROC_I() and PDE() macros internal to procfs proc: Supply a function to remove a proc entry by PDE take cgroup_open() and cpuset_open() to fs/proc/base.c ppc: Clean up scanlog ppc: Clean up rtas_flash driver somewhat hostap: proc: Use remove_proc_subtree() drm: proc: Use remove_proc_subtree() drm: proc: Use minor->index to label things, not PDE->name drm: Constify drm_proc_list[] zoran: Don't print proc_dir_entry data in debug reiserfs: Don't access the proc_dir_entry in r_open(), r_start() r_show() proc: Supply an accessor for getting the data from a PDE's parent airo: Use remove_proc_subtree() rtl8192u: Don't need to save device proc dir PDE rtl8187se: Use a dir under /proc/net/r8180/ proc: Add proc_mkdir_data() proc: Move some bits from linux/proc_fs.h to linux/{of.h,signal.h,tty.h} proc: Move PDE_NET() to fs/proc/proc_net.c ...
| * Include missing linux/slab.h inclusionsDavid Howells2013-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Include missing linux/slab.h inclusions where the source file is currently expecting to get kmalloc() and co. through linux/proc_fs.h. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> cc: linux-s390@vger.kernel.org cc: sparclinux@vger.kernel.org cc: linux-efi@vger.kernel.org cc: linux-mtd@lists.infradead.org cc: devel@driverdev.osuosl.org cc: x86@kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | pps: pps_kc_hardpps_lock can be staticFengguang Wu2013-04-30
| | | | | | | | | | | | | | | | | | | | | | drivers/pps/kc.c:37:1: sparse: symbol 'pps_kc_hardpps_lock' was not declared. Should it be static? drivers/pps/kc.c:39:19: sparse: symbol 'pps_kc_hardpps_dev' was not declared. Should it be static? drivers/pps/kc.c:40:5: sparse: symbol 'pps_kc_hardpps_mode' was not declared. Should it be static? Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | pps: hide more configuration symbols behind CONFIG_PPSFlorian Fainelli2013-04-30
|/ | | | | | | | | | | Make CONFIG_PPS_DEBUG and CONFIG_NTP_PPS be hidden if CONFIG_PPS is not selected, so that we are not prompted for these configuration options if CONFIG_PPS is not set. Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/pps/clients/pps-gpio.c: use devm_kzallocJulia Lawall2013-02-27
| | | | | | | | | | | devm_kzalloc allocates memory that is released when a driver detaches. This patch uses devm_kzalloc for data that is allocated in the probe function of a platform device and is only freed in the remove function. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: convert to idr_alloc()Tejun Heo2013-02-27
| | | | | | | | | Convert to the much saner new idr interface. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: Move timestamp read into PPS code properGeorge Spelvin2013-02-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | The PPS (Pulse-Per-Second) line discipline has developed a number of unhealthy attachments to core tty data and functions, ultimately leading to its breakage. The previous patches fixed the crashing. This one reduces coupling further by eliminating the timestamp parameter from the dcd_change ldisc method. This reduces header file linkage and makes the extension more generic, and the timestamp read is delayed only slightly, from just before the ldisc->ops->dcd_change method call to just after. Fix attendant build breakage in drivers/tty/n_tty.c drivers/tty/tty_buffer.c drivers/staging/speakup/selection.c drivers/staging/dgrp/dgrp_*.c Cc: William Hubbs <w.d.hubbs@gmail.com> Cc: Chris Brannon <chris@the-brannons.com> Cc: Kirk Reiser <kirk@braille.uwo.ca> Cc: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: George Spelvin <linux@horizon.com> Acked-by: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* pps: Don't crash the machine when exiting will doGeorge Spelvin2013-02-13
| | | | | | | | | | PPS is not really the must-have subsystem that warrants crashing the machine if the ldisc interface is broken. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: George Spelvin <linux@horizon.com> Acked-by: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* pps: Fix a use-after free bug when unregistering a source.George Spelvin2013-02-13
| | | | | | | | | | | | | | | | | | | Remove the cdev from the system (with cdev_del) *before* deallocating it (in pps_device_destruct, called via kobject_put from device_destroy). Also prevent deallocating a device with open file handles. A better long-term fix is probably to remove the cdev from the pps_device entirely, and instead have all devices reference one global cdev. Then the deallocation ordering becomes simpler. But that's more complex and invasive change, so we leave that for later. Signed-off-by: George Spelvin <linux@horizon.com> Cc: stable <stable@vger.kernel.org> Acked-by: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* pps: Use pps_lookup_dev to reduce ldisc couplingGeorge Spelvin2013-02-13
| | | | | | | | | | | | | | | Now that N_TTY uses tty->disc_data for its private data, 'subclass' ldiscs cannot use ->disc_data for their own private data. (This is a regression is v3.8-rc1) Use pps_lookup_dev to associate the tty with the pps source instead. This fixes a crashing regression in 3.8-rc1. Signed-off-by: George Spelvin <linux@horizon.com> Acked-by: Rodolfo Giometti <giometti@enneenne.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* pps: Add pps_lookup_dev() functionGeorge Spelvin2013-02-13
| | | | | | | | | | | | | | | | | | | The PPS serial line discipline wants to attach a PPS device to a tty without changing the tty code to add a struct pps_device * pointer. Since the number of PPS devices in a typical system is generally very low (n=1 is by far the most common), it's practical to search the entire list of allocated pps devices. (We capture the timestamp before the lookup, so the timing isn't affected.) It is a bit ugly that this function, which is part of the in-kernel PPS API, has to be in pps.c as opposed to kapi,c, but that's not something that affects users. Signed-off-by: George Spelvin <linux@horizon.com> Acked-by: Rodolfo Giometti <giometti@enneenne.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tty: Added a CONFIG_TTY option to allow removal of TTYJoe Millenbach2013-01-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The option allows you to remove TTY and compile without errors. This saves space on systems that won't support TTY interfaces anyway. bloat-o-meter output is below. The bulk of this patch consists of Kconfig changes adding "depends on TTY" to various serial devices and similar drivers that require the TTY layer. Ideally, these dependencies would occur on a common intermediate symbol such as SERIO, but most drivers "select SERIO" rather than "depends on SERIO", and "select" does not respect dependencies. bloat-o-meter output comparing our previous minimal to new minimal by removing TTY. The list is filtered to not show removed entries with awk '$3 != "-"' as the list was very long. add/remove: 0/226 grow/shrink: 2/14 up/down: 6/-35356 (-35350) function old new delta chr_dev_init 166 170 +4 allow_signal 80 82 +2 static.__warned 143 142 -1 disallow_signal 63 62 -1 __set_special_pids 95 94 -1 unregister_console 126 121 -5 start_kernel 546 541 -5 register_console 593 588 -5 copy_from_user 45 40 -5 sys_setsid 128 120 -8 sys_vhangup 32 19 -13 do_exit 1543 1526 -17 bitmap_zero 60 40 -20 arch_local_irq_save 137 117 -20 release_task 674 652 -22 static.spin_unlock_irqrestore 308 260 -48 Signed-off-by: Joe Millenbach <jmillenbach@gmail.com> Reviewed-by: Jamey Sharp <jamey@minilop.net> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Drivers: misc: remove __dev* attributes.Greg Kroah-Hartman2013-01-03
| | | | | | | | | | | | | | CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* pps, ptp: Remove dependencies on EXPERIMENTALBen Hutchings2012-11-01
| | | | | | | | | These are now established subsystems, and we want drivers to be able to select PPS and PTP_1588_CLOCK without depending on EXPERIMENTAL. Further, the use of EXPERIMENTAL is now deprecated in general. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* idr: rename MAX_LEVEL to MAX_IDR_LEVELFengguang Wu2012-10-06
| | | | | | | | | | | | | | | | | | | | To avoid name conflicts: drivers/video/riva/fbdev.c:281:9: sparse: preprocessor token MAX_LEVEL redefined While at it, also make the other names more consistent and add parentheses. [akpm@linux-foundation.org: repair fallout] [sfr@canb.auug.org.au: IB/mlx4: fix for MAX_ID_MASK to MAX_IDR_MASK name change] Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Cc: Bernd Petrovitsch <bernd@petrovitsch.priv.at> Cc: walter harms <wharms@bfs.de> Cc: Glauber Costa <glommer@parallels.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Roland Dreier <roland@purestorage.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: return PTR_ERR on error in device_createEmil Goode2012-07-30
| | | | | | | | | | | | | We should return PTR_ERR if the call to the device_create function fails. Without this patch we instead return the value from a successful call to cdev_add if the call to device_create fails. Signed-off-by: Emil Goode <emilgoode@gmail.com> Acked-by: Devendra Naga <devendra.aaru@gmail.com> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: class_create() returns an ERR_PTR, not NULLDan Carpenter2012-03-05
| | | | | | | | | class_create() never returns NULLs only ERR_PTRs. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps gpio client: add missing dependencyHeiko Carstens2011-11-02
| | | | | | | | | | | | | Add "depends on GENERIC_HARDIRQS" to avoid compile breakage on s390: drivers/built-in.o: In function `pps_gpio_remove': linux-next/drivers/pps/clients/pps-gpio.c:189: undefined reference to `free_irq' Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: James Nuss <jamesnuss@nanometrics.ca> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: new client driver using GPIOJames Nuss2011-11-02
| | | | | | | | | | | | | | | | | | | | | | | This client driver allows you to use a GPIO pin as a source for PPS signals. Platform data [1] are used to specify the GPIO pin number, label, assert event edge type, and whether clear events are captured. This driver is based on the work by Ricardo Martins who submitted an initial implementation [2] of a PPS IRQ client driver to the linuxpps mailing-list on Dec 3 2010. [1] include/linux/pps-gpio.h [2] http://ml.enneenne.com/pipermail/linuxpps/2010-December/004155.html [akpm@linux-foundation.org: remove unneeded cast of void*] Signed-off-by: James Nuss <jamesnuss@nanometrics.ca> Cc: Ricardo Martins <rasm@fe.up.pt> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Ricardo Martins <rasm@fe.up.pt> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: Igor Plyatov <plyatov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: default echo functionJames Nuss2011-11-02
| | | | | | | | | | | | | | | | | A default echo function has been provided so it is no longer an error when you specify PPS_ECHOASSERT or PPS_ECHOCLEAR without an explicit echo function. This allows some code re-use and also makes it easier to write client drivers since the default echo function does not normally need to change. Signed-off-by: James Nuss <jamesnuss@nanometrics.ca> Reviewed-by: Ben Gardiner <bengardiner@nanometrics.ca> Acked-by: Rodolfo Giometti <giometti@linux.it> Cc: Ricardo Martins <rasm@fe.up.pt> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: Igor Plyatov <plyatov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix common misspellingsLucas De Marchi2011-03-31
| | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* pps: remove unreachable codeAlexander Gordeev2011-03-22
| | | | | | | | | | | Remove code enabled only when CONFIG_PREEMPT_RT is turned on because it is not used in the vanilla kernel. Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: john stultz <johnstul@us.ibm.com> Cc: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: change to new flag variablematt mooney2011-03-17
| | | | | | | | Replace EXTRA_CFLAGS with ccflags-y. Signed-off-by: matt mooney <mfm@muteddisk.com> Acked-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* pps: make pps_gen_parport depend on BROKENThomas Gleixner2011-03-04
| | | | | | | | | | | | | | | | | | | | | | This driver causes hard lockups, when the active clock soure is jiffies. The reason is that it loops with interrupts disabled waiting for a timestamp to be reached by polling getnstimeofday(). Though with a jiffies clocksource, when that code runs on the same CPU which is responsible for updating jiffies, then we loop in circles for ever simply because the timer interrupt cannot update jiffies. So both UP and SMP can be affected. There is no easy fix for that problem so make it depend on BROKEN for now. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: Rodolfo Giometti <giometti@linux.it> Cc: john stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: initialize ts_real properlyAlexander Gordeev2011-02-25
| | | | | | | | | | | Initialize ts_real.flags to fix compiler warning about possible uninitialized use of this field. Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: john stultz <johnstul@us.ibm.com> Cc: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: claim parallel port exclusivelyAlexander Gordeev2011-01-26
| | | | | | | | | | | | | Both pps_parport and pps_gen_parport are written in a way that they can't share a port with any other driver. This can result in locking up the process that loads modules or even the whole kernel if the modules are compiled in. Use PARPORT_FLAG_EXCL to indicate this. Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps ktimer: remove noisy messageRodolfo Giometti2011-01-26
| | | | | | | | Signed-off-by: Rodolfo Giometti <giometti@linux.it> Reported-by: Ingo Molnar <mingo@elte.hu> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: add parallel port PPS signal generatorAlexander Gordeev2011-01-13
| | | | | | | | | | | Add PPS signal generator which utilizes STROBE pin of a parallel port to send PPS signals. It uses parport abstraction layer and hrtimers to precisely control the signal. Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: add parallel port PPS signal generatorAlexander Gordeev2011-01-13
| | | | | | | | | | | | | Add PPS signal generator which utilizes STROBE pin of a parallel port to send PPS signals. It uses parport abstraction layer and hrtimers to precisely control the signal. [akpm@linux-foundation.org: fix build] Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Acked-by: Rodolfo Giometti <giometti@linux.it> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: add parallel port PPS clientAlexander Gordeev2011-01-13
| | | | | | | | | | | | | | | | | | | | | | Add parallel port PPS client. It uses a standard method for capturing timestamps for assert edge transitions: getting a timestamp soon after an interrupt has happened. This is not a very precise source of time information due to interrupt handling delays. However, timestamps for clear edge transitions are much more precise because the interrupt handler continuously polls hardware port until the transition is done. Hardware port operations require only about 1us so the maximum error should not exceed this value. This was my primary goal when developing this client. Clear edge capture could be disabled using clear_wait parameter. Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: add kernel consumer supportAlexander Gordeev2011-01-13
| | | | | | | | | | Add an optional feature of PPSAPI, kernel consumer support, which uses the added hardpps() function. Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ntp: add hardpps implementationAlexander Gordeev2011-01-13
| | | | | | | | | | | | | | | | | | | | | This commit adds hardpps() implementation based upon the original one from the NTPv4 reference kernel code from David Mills. However, it is highly optimized towards very fast syncronization and maximum stickness to PPS signal. The typical error is less then a microsecond. To make it sync faster I had to throw away exponential phase filter so that the full phase offset is corrected immediately. Then I also had to throw away median phase filter because it gives a bigger error itself if used without exponential filter. Maybe we will find an appropriate filtering scheme in the future but it's not necessary if the signal quality is ok. Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: timestamp is always passed to dcd_change()Alexander Gordeev2011-01-13
| | | | | | | | | | | Remove the code that gatheres timestamp in pps_tty_dcd_change() in case passed ts parameter is NULL because it never happens in the current code. Fix comments as well. Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: simplify conditions a bitAlexander Gordeev2011-01-13
| | | | | | | | | Bitwise conjunction is distributive so we can simplify some conditions. Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pps: use BUG_ON for kernel API safety checksAlexander Gordeev2011-01-13
| | | | | | | | | | | This way less overhead is involved when running production kernel. If you want to debug a pps client module please define DEBUG to enable the checks. Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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