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Mian Yousaf Kaukab 2f86198467 rtc: pcf2127: handle timestamp interrupts commit `03623b4b04` ("rtc: pcf2127: add tamper detection support") added support for timestamp interrupts. However they are not being handled in the irq handler. If a timestamp interrupt occurs it results in kernel disabling the interrupt and displaying the call trace: [ 121.145580] irq 78: nobody cared (try booting with the "irqpoll" option) ... [ 121.238087] [<00000000c4d69393>] irq_default_primary_handler threaded [<000000000a90d25b>] pcf2127_rtc_irq [rtc_pcf2127] [ 121.248971] Disabling IRQ #78 Handle timestamp interrupts in pcf2127_rtc_irq(). Save time stamp before clearing TSF1 and TSF2 flags so that it can't be overwritten. Set a flag to mark if the timestamp is valid and only report to sysfs if the flag is set. To mimic the hardware behavior, don’t save another timestamp until the first one has been read by the userspace. However, if the alarm irq is not configured, keep the old way of handling timestamp interrupt in the timestamp0 sysfs calls. Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de> Reviewed-by: Bruno Thomsen <bruno.thomsen@gmail.com> Tested-by: Bruno Thomsen <bruno.thomsen@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210629150643.31551-1-ykaukab@suse.de		2021-07-10 02:58:31 +02:00
arch	Handle power-gating of AMD IOMMU perf counters properly when they are used.	2021-05-09 13:00:26 -07:00
block	block-5.13-2021-05-09	2021-05-09 13:25:14 -07:00
certs
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Documentation	dt-bindings: rtc: ti,bq32k: take maintainership	2021-07-10 01:39:22 +02:00
drivers	rtc: pcf2127: handle timestamp interrupts	2021-07-10 02:58:31 +02:00
fs	3 small SMB3 chmultichannel related changesets (also for stable)	2021-05-09 13:19:29 -07:00
include	block-5.13-2021-05-09	2021-05-09 13:25:14 -07:00
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kernel	A set of scheduler updates:	2021-05-09 13:14:34 -07:00
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Makefile	Linux 5.13-rc1	2021-05-09 14:17:44 -07:00
README

README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.