APPLIED[I]: [F/H/I/Unstable][F-OEM-5.10/F-OEM-5.13][SRU][PATCH 0/1] selftests: timers: rtcpie: skip test if default RTC device does not exist

[Andrea Righi]

On Mon, Jul 26, 2021 at 03:56:07PM +0800, Po-Hsu Lin wrote:
> [Impact]
> This test will require /dev/rtc0, the default RTC device, or one
> specified by user to run. Since this default RTC is not guaranteed to
> exist on all of the devices, so check its existence first, otherwise
> skip this test with the kselftest skip code 4.
> 
> Without this patch this test will fail like this on a s390x zVM:
> $ selftests: timers: rtcpie
> $ /dev/rtc0: No such file or directory
> not ok 1 selftests: timers: rtcpie # exit=22
> 
> We have this test disabled in our test suite with an if check [1],
> thus we're not seeing this failure recently. With this patch
> applied we can remove that code block later.
> 
> [1] https://kernel.ubuntu.com/git/ubuntu/autotest-client-tests.git/tree/ubuntu_kernel_selftests/ubuntu_kernel_selftests.py#n133
> 
> [Fix]
> * 0d3e5a057992bd selftests: timers: rtcpie: skip test if default RTC
>   device does not exist
> 
> [Test]
> Run this test with patched source tree on a s390x zVM and it will be
> skipped correctly:
> $ selftests: timers: rtcpie
> $ Default RTC /dev/rtc0 does not exist. Test Skipped!
> not ok 9 selftests: timers: rtcpie # SKIP
> 
> [Where problems could occur]
> If this fix is incorrect we might see it failing again on systems that
> without /dev/rtc0 (after removing our local hacks in autotest-client-tests)
> 
> Po-Hsu Lin (1):
>   selftests: timers: rtcpie: skip test if default RTC device does not
>     exist

Applied to impish/5.13.

Thanks,
-Andrea