Oliver O'Halloran 5f8cf64758 selftests/powerpc: Squash spurious errors due to device removal ... For drivers that don't have the error handling callbacks we implement recovery by removing the device and re-probing it. This causes the sysfs directory for the PCI device to be removed which causes the following spurious error to be printed when checking the PE state: Breaking 0005:03:00.0... ./eeh-basic.sh: line 13: can't open /sys/bus/pci/devices/0005:03:00.0/eeh_pe_state: no such file 0005:03:00.0, waited 0/60 0005:03:00.0, waited 1/60 0005:03:00.0, waited 2/60 0005:03:00.0, waited 3/60 0005:03:00.0, waited 4/60 0005:03:00.0, waited 5/60 0005:03:00.0, waited 6/60 0005:03:00.0, waited 7/60 0005:03:00.0, Recovered after 8 seconds We currently try to avoid this by checking if the PE state file exists before reading from it. This is however inherently racy so re-work the state checking so that we only read from the file once, and we squash any errors that occur while reading. Fixes: 85d86c8aa5 ("selftests/powerpc: Add basic EEH selftest") Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200727010127.23698-1-oohall@gmail.com		2020-07-29 21:02:11 +10:00
..
eeh-basic.sh	selftests/eeh: Skip ahci adapters	2020-04-03 00:09:53 +11:00
eeh-functions.sh	selftests/powerpc: Squash spurious errors due to device removal	2020-07-29 21:02:11 +10:00
Makefile	selftests/powerpc: Add basic EEH selftest	2019-09-05 14:22:40 +10:00