linux-rockchip

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Guilherme G. Piccoli c9888aaed1 parisc: Replace regular spinlock with spin_trylock on panic path

[ Upstream commit 829632dae8321787525ee37dc4828bbe6edafdae ]

The panic notifiers' callbacks execute in an atomic context, with
interrupts/preemption disabled, and all CPUs not running the panic
function are off, so it's very dangerous to wait on a regular
spinlock, there's a risk of deadlock.

Refactor the panic notifier of parisc/power driver to make use
of spin_trylock - for that, we've added a second version of the
soft-power function. Also, some comments were reorganized and
trailing white spaces, useless header inclusion and blank lines
were removed.

Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jeroen Roovers <jer@xs4all.nl>
Acked-by: Helge Deller <deller@gmx.de> # parisc
Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-05-24 17:32:42 +01:00

alpha

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arc

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arm

ARM: 9296/1: HP Jornada 7XX: fix kernel-doc warnings

2023-05-24 17:32:31 +01:00

arm64

arm64: dts: qcom: sdm845-polaris: Drop inexistent properties

2023-05-24 17:32:36 +01:00

csky