A few fixes for the GPIO tree:

- Change a crucial semantic ordering in the GPIO irqchip
  helpers.

- Fix two nasty regressions in the ACPI gpiolib extensions.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=Tc0Z
-----END PGP SIGNATURE-----
gpio / ACPI: Prevent potential wrap of GPIO value on OpRegion read

Dan Carpenter's static code checker reports:

 The patch 473ed7be0da0: "gpio / ACPI: Add support for ACPI GPIO
 operation regions" from Mar 14, 2014, leads to the following static
 checker warning:

  drivers/gpio/gpiolib-acpi.c:454 acpi_gpio_adr_space_handler()
  warn: should 'gpiod_get_raw_value(desc) << i' be a 64 bit type?

This is due the fact that *value is of type u64 and gpiod_get_raw_value()
returns int. Since i can be larger than 31, it is possible that the value
returned gets wrapped.

Fix this by casting the return of gpiod_get_raw_value() to u64 first before
shift.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
1 file changed