linux/arch/powerpc
Alistair Popple 25642e1459 powerpc/opal-irqchip: Fix double endian conversion
The OPAL event calls return a mask of events that are active in big
endian format. This is checked when unmasking the events in the
irqchip by comparison with a cached value. The cached value was stored
in big endian format but should've been converted to CPU endian
first.

This bug leads to OPAL event delivery being delayed or dropped on some
systems. Symptoms may include a non-functional console.

The bug is fixed by calling opal_handle_events(...) instead of
duplicating code in opal_event_unmask(...).

Fixes: 9f0fd0499d ("powerpc/powernv: Add a virtual irqchip for opal events")
Cc: stable@vger.kernel.org # v4.2+
Reported-by: Douglas L Lehr <dllehr@us.ibm.com>
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-12-08 16:53:31 +11:00
..
boot powerpc updates for 4.4 2015-11-05 23:38:43 -08:00
configs powerpc updates for 4.4 2015-11-05 23:38:43 -08:00
crypto
include powerpc/tm: Block signal return setting invalid MSR state 2015-11-23 20:06:31 +11:00
kernel powerpc/tm: Check for already reclaimed tasks 2015-11-23 20:18:03 +11:00
kvm Four changes: 2015-11-12 14:34:06 -08:00
lib powerpc32: memset: only use dcbz once cache is enabled 2015-09-17 10:36:53 +10:00
math-emu
mm powerpc updates for 4.4 2015-11-05 23:38:43 -08:00
net ebpf: migrate bpf_prog's flags to bitfield 2015-10-03 05:02:39 -07:00
oprofile
perf powerpc updates for 4.4 2015-11-05 23:38:43 -08:00
platforms powerpc/opal-irqchip: Fix double endian conversion 2015-12-08 16:53:31 +11:00
sysdev Merge branch 'for-4.4/io-poll' of git://git.kernel.dk/linux-block 2015-11-10 17:23:49 -08:00
xmon powerpc/xmon: Add some more elements to the existing PACA dump list 2015-10-15 20:32:02 +11:00
Kconfig powerpc/book3e-64: Enable kexec 2015-10-27 18:13:30 -05:00
Kconfig.debug
Makefile powerpc/cell: Drop CONFIG_TUNE_CELL in favour of CONFIG_CELL_CPU 2015-10-19 19:51:18 +11:00
relocs_check.sh