stable inclusion
from stable-5.10.24
commit ccc942eaf570241d3c2968de8daa3b6f7f227e2f
bugzilla: 51348

--------------------------------

commit cf25ef6b upstream.

Make sure to hold the gpio_lock when removing the gpio device from the
gpio_devices list (when dropping the last reference) to avoid corrupting
the list when there are concurrent accesses.

Fixes: ff2b1359 ("gpio: make the gpiochip a real device")
Cc: stable@vger.kernel.org      # 4.6
Reviewed-by: NSaravana Kannan <saravanak@google.com>
Signed-off-by: NJohan Hovold <johan@kernel.org>
Signed-off-by: NBartosz Golaszewski <bgolaszewski@baylibre.com>
[ johan: adjust context to 5.11 ]
Signed-off-by: NJohan Hovold <johan@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: N  Weilong Chen <chenweilong@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>