pinctrl: baytrail: Add missing spinlock usage in byt_gpio_irq_handler

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.

Cc: stable@vger.kernel.org
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>

path: root/sysctl.h

#ifndef SYSCTL_H
#define SYSCTL_H

#define SYSCTL_PROC_PATH "/proc/sys/"

int sysctl_set_int(const char *file, int value);
int sysctl_get_int(const char *file, int *value);

#endif