cleanup: Don't use [N] = {} when initializing arrays

If we do this:

  enum foo_v {
    FOO_A,
    FOO_B,
    FOO_COUNT
  };

  struct foo_t foo[] = {
    {...},
    {...},
  };
  BUILD_ASSERT(ARRAY_SIZE(foo) == FOO_COUNT);

Then we can be sure we're at least initialized all the elements of foo,
although there's no particular guarantee that the order is correct.

However, if we use this:

  struct foo_t foo[] = {
    [FOO_A] = {...},
    [FOO_B] = {...},
  };

and we accidentally get one wrong:

  struct foo_t foo[] = {
    [FOO_B] = {...},
    [FOO_B] = {...},
  };

Then the assertion still passes, but we've only initialized one element.

Don't do that.

BUG=chrome-os-partner:18343
BRANCH=none
TEST=manual

Refactoring only. Build everything. It should still work.

Change-Id: I58f659207990f18c6fb74b1cac2ec1163cdb07ea
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/172115
Reviewed-by: Randall Spangler <rspangler@chromium.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/board/spring/board.c b/board/spring/board.c
index fd9acaf6d5..09e943d8f7 100644
--- a/board/spring/board.c
+++ b/board/spring/board.c
@@ -120,10 +120,9 @@ const struct adc_t adc_channels[] = {
 };
 BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_ILIM] = {STM32_TIM(3), STM32_TIM_CH(1), 0,
-			 GPIO_ILIM},
+	{STM32_TIM(3), STM32_TIM_CH(1), 0, GPIO_ILIM},
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);