imx: ventana: Avoid undefined behaviour
authorThierry Reding <treding@nvidia.com>
Fri, 22 Aug 2014 07:46:35 +0000 (09:46 +0200)
committerStefano Babic <sbabic@denx.de>
Tue, 9 Sep 2014 14:26:33 +0000 (16:26 +0200)
commitdc73cbe7b05851a3ff76beabdc0589d2b3ebb9a3
treea5a1590d6c70073e0fda1af8c94c8f4d4b6f2750
parent021e79c85371d2d5882f2eb6c58233f016add52d
imx: ventana: Avoid undefined behaviour

The leds array within struct ventana has space for 3 elements, but the
setup_board_gpio() function tries to set up 4 GPIOs for LEDs. Recent
versions of GCC complain about that:

board/gateworks/gw_ventana/gw_ventana.c: In function 'setup_board_gpio':
board/gateworks/gw_ventana/gw_ventana.c:987:27: warning: iteration 3u invokes undefined behavior [-Waggressive-loop-optimizations]
   if (gpio_cfg[board].leds[i])
   ^
board/gateworks/gw_ventana/gw_ventana.c:986:2: note: containing loop
  for (i = 0; i < 4; i++) {
  ^

Fix this by making the upper bound of the loop match the array size.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Tim Harvey <tharvey@gateworks.com>
board/gateworks/gw_ventana/gw_ventana.c