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Subject[PATCH 0/2] Use raw spinlocks in the ls-extirq driver
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The ls-extirq irqchip driver accesses regmap inside its implementation
of the struct irq_chip :: irq_set_type method, and currently regmap
only knows to lock using normal spinlocks. But the method above wants
raw spinlock context, so this isn't going to work and triggers a
"[ BUG: Invalid wait context ]" splat.

The best we can do given the arrangement of the code is to patch regmap
and the syscon driver: regmap to support raw spinlocks, and syscon to
request them on behalf of its ls-extirq consumer.

Link: https://lore.kernel.org/lkml/20210825135438.ubcuxm5vctt6ne2q@skbuf/T/#u

Vladimir Oltean (2):
regmap: teach regmap to use raw spinlocks if requested in the config
mfd: syscon: request a regmap with raw spinlocks for some devices

drivers/base/regmap/internal.h | 4 ++++
drivers/base/regmap/regmap.c | 35 +++++++++++++++++++++++++++++-----
drivers/mfd/syscon.c | 16 ++++++++++++++++
include/linux/regmap.h | 2 ++
4 files changed, 52 insertions(+), 5 deletions(-)

--
2.25.1

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