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config IRCOMM
	tristate "IrCOMM protocol"
	depends on IRDA && TTY
	help
	  Say Y here if you want to build support for the IrCOMM protocol.
	  To compile it as modules, choose M here: the modules will be
	  called ircomm and ircomm_tty.
	  IrCOMM implements serial port emulation, and makes it possible to
	  use all existing applications that understands TTY's with an
	  infrared link.  Thus you should be able to use application like PPP,
	  minicom and others.

ry='commit info' class='commit-info'> authorJoonyoung Shim <jy0922.shim@samsung.com>2017-01-17 13:54:36 +0900 committerThomas Gleixner <tglx@linutronix.de>2017-01-17 10:08:38 +0100 commitbc7c36eedb0c7004aa06c2afc3c5385adada8fa3 (patch) tree14ce1ae3cce8013aa4bc46297f6370ec0527be78 /tools/perf/arch/parisc parent49def1853334396f948dcb4cedb9347abb318df5 (diff)
clocksource/exynos_mct: Clear interrupt when cpu is shut down
When a CPU goes offline a potentially pending timer interrupt is not cleared. When the CPU comes online again then the pending interrupt is delivered before the per cpu clockevent device is initialized. As a consequence the tick interrupt handler dereferences a NULL pointer. [ 51.251378] Unable to handle kernel NULL pointer dereference at virtual address 00000040 [ 51.289348] task: ee942d00 task.stack: ee960000 [ 51.293861] PC is at tick_periodic+0x38/0xb0 [ 51.298102] LR is at tick_handle_periodic+0x1c/0x90 Clear the pending interrupt in the cpu dying path. Fixes: 56a94f13919c ("clocksource: exynos_mct: Avoid blocking calls in the cpu hotplug notifier") Reported-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Cc: linux-samsung-soc@vger.kernel.org Cc: cw00.choi@samsung.com Cc: daniel.lezcano@linaro.org Cc: stable@vger.kernel.org Cc: javier@osg.samsung.com Cc: kgene@kernel.org Cc: krzk@kernel.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1484628876-22065-1-git-send-email-jy0922.shim@samsung.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'tools/perf/arch/parisc')