linux/drivers/ptp, branch v4.8

ptp: oops in ptp_ioctl()

2016-05-30T05:32:27Z

If we pass ERR_PTR(-EFAULT) to kfree() then it's going to oops. Fixes: 2ece068e1b1d ('ptp: use memdup_user().') Signed-off-by: Dan Carpenter Acked-by: Richard Cochran Signed-off-by: David S. Miller

ptp: use memdup_user().

2016-05-23T21:05:30Z

Use memdup_user to duplicate a memory region from user-space to kernel-space, instead of open coding using kmalloc & copy_from_user. Signed-off-by: Muhammad Falak R Wani Acked-by: Richard Cochran Signed-off-by: David S. Miller

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-03-15T19:13:56Z

Pull timer updates from Thomas Gleixner: "The timer department delivers this time: - Support for cross clock domain timestamps in the core code plus a first user. That allows more precise timestamping for PTP and later for audio and other peripherals. The ptp/e1000e patches have been acked by the relevant maintainers and are carried in the timer tree to avoid merge ordering issues. - Support for unregistering the current clocksource watchdog. That lifts a limitation for switching clocksources which has been there from day 1 - The usual pile of fixes and updates to the core and the drivers. Nothing outstanding and exciting" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits) time/timekeeping: Work around false positive GCC warning e1000e: Adds hardware supported cross timestamp on e1000e nic ptp: Add PTP_SYS_OFFSET_PRECISE for driver crosstimestamping x86/tsc: Always Running Timer (ART) correlated clocksource hrtimer: Revert CLOCK_MONOTONIC_RAW support time: Add history to cross timestamp interface supporting slower devices time: Add driver cross timestamp interface for higher precision time synchronization time: Remove duplicated code in ktime_get_raw_and_real() time: Add timekeeping snapshot code capturing system time and counter time: Add cycles to nanoseconds translation jiffies: Use CLOCKSOURCE_MASK instead of constant clocksource: Introduce clocksource_freq2mult() clockevents/drivers/exynos_mct: Implement ->set_state_oneshot_stopped() clockevents/drivers/arm_global_timer: Implement ->set_state_oneshot_stopped() clockevents/drivers/arm_arch_timer: Implement ->set_state_oneshot_stopped() clocksource/drivers/arm_global_timer: Register delay timer clocksource/drivers/lpc32xx: Support timer-based ARM delay clocksource/drivers/lpc32xx: Support periodic mode clocksource/drivers/lpc32xx: Don't use the prescaler counter for clockevents clocksource/drivers/rockchip: Add err handle for rk_timer_init ...

ptp: Add PTP_SYS_OFFSET_PRECISE for driver crosstimestamping

2016-03-03T22:23:43Z

Currently, network /system cross-timestamping is performed in the PTP_SYS_OFFSET ioctl. The PTP clock driver reads gettimeofday() and the gettime64() callback provided by the driver. The cross-timestamp is best effort where the latency between the capture of system time (getnstimeofday()) and the device time (driver callback) may be significant. The getcrosststamp() callback and corresponding PTP_SYS_OFFSET_PRECISE ioctl allows the driver to perform this device/system correlation when for example cross timestamp hardware is available. Modern Intel systems can do this for onboard Ethernet controllers using the ART counter. There is virtually zero latency between captures of the ART and network device clock. The capabilities ioctl (PTP_CLOCK_GETCAPS), is augmented allowing applications to query whether or not drivers implement the getcrosststamp callback, providing more precise cross timestamping. Cc: Prarit Bhargava Cc: Richard Cochran Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Andy Lutomirski Cc: kevin.b.stanton@intel.com Cc: kevin.j.clarke@intel.com Cc: hpa@zytor.com Cc: jeffrey.t.kirsher@intel.com Cc: netdev@vger.kernel.org Acked-by: Richard Cochran Signed-off-by: Christopher S. Hall [jstultz: Commit subject tweaks] Signed-off-by: John Stultz

ptp: ixp46x: use helpers for converting ns to timespec

2016-01-29T20:38:59Z

Convert the driver to use ns_to_timespec64() and timespec64_to_ns() instead of open coding the same logic. Signed-off-by: Kefeng Wang Acked-by: Richard Cochran Signed-off-by: David S. Miller

ptp: remove 32 bit get/set methods.

2015-03-31T16:01:19Z

All of the PHC drivers have been converted to the new methods. This patch converts the three remaining callers within the core code and removes the older methods for good. As a result, the core PHC code is ready for the year 2038. However, some of the PHC drivers are not quite ready yet. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller

ptp: pch: convert to the 64 bit get/set time methods.

2015-03-31T16:01:19Z

The device has a 64 bit clock register, where each clock tick is 32 nanoseconds, and so with this patch the driver is ready for the year 2038. Compile tested only. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller

ptp: ixp46x: convert to the 64 bit get/set time methods.

2015-03-31T16:01:19Z

The device has a 64 bit clock register, where each clock tick is 16 nanoseconds, and so with this patch the driver is ready for the year 2038. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller

ptp: use the 64 bit get/set time methods for the posix clock.

2015-03-31T16:01:16Z

This patch changes the posix clock code to prefer the new methods whenever they are implemented by the PHC drivers. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller

ptp: use the 64 bit gettime method for the SYS_OFFSET ioctl.

2015-03-31T16:01:16Z

This patch changes the code to use the new method whenever implemented by the PHC driver. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller