gpio: Use unsigned int for of_gpio_n_cells

The cell count for GPIO specifiers can never be negative, so make the
field unsigned.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index fe66c9306caf..c97f8325e8bf 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -193,7 +193,7 @@ struct gpio_chip {
          *
          * Number of cells used to form the GPIO specifier.
          */
-        int of_gpio_n_cells;
+        unsigned int of_gpio_n_cells;
 
         /**
          * @of_xlate: