pinctrl: baytrail: Add missing spinlock usage in byt_gpio_irq_handler

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commit cdca06e4e8 upstream.

According to VLI64 Intel Atom E3800 Specification Update (#329901)
concurrent read accesses may result in returning 0xffffffff and write
accesses may be dropped silently.
To workaround all accesses must be protected by locks.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Alexander Stein 2017-01-30 12:35:28 +01:00 • committed by Greg Kroah-Hartman

parent 7396685a1b

commit 20658b3df8

1 changed files with 2 additions and 0 deletions

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drivers/pinctrl/intel/pinctrl-baytrail.c

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