On Thu, 17 Jan 2019 19:45:49 -0300
Paul Cercueil <p...@crapouillou.net> wrote:
> The maximum value found in that array is 15, there's no need to store
> these values as uint32_t, a uint8_t is enough.
Is it really worth the additional cast you add in the code?
>
> Signed-off-by: Paul Cercueil <p...@crapouillou.net>
> ---
> drivers/memory/jz4780-nemc.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/memory/jz4780-nemc.c b/drivers/memory/jz4780-nemc.c
> index bcf06adefc96..ef3f20e46590 100644
> --- a/drivers/memory/jz4780-nemc.c
> +++ b/drivers/memory/jz4780-nemc.c
> @@ -161,7 +161,7 @@ static bool jz4780_nemc_configure_bank(struct jz4780_nemc
> *nemc,
> * Conversion of tBP and tAW cycle counts to values supported by the
> * hardware (round up to the next supported value).
> */
> - static const uint32_t convert_tBP_tAW[] = {
> + static const u8 convert_tBP_tAW[] = {
> 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
>
> /* 11 - 12 -> 12 cycles */
> @@ -232,7 +232,7 @@ static bool jz4780_nemc_configure_bank(struct jz4780_nemc
> *nemc,
> return false;
> }
>
> - smcr |= convert_tBP_tAW[cycles] << NEMC_SMCR_TBP_SHIFT;
> + smcr |= (u32)convert_tBP_tAW[cycles] << NEMC_SMCR_TBP_SHIFT;
> }
>
> if (of_property_read_u32(node, "ingenic,nemc-tAW", &val) == 0) {
> @@ -244,7 +244,7 @@ static bool jz4780_nemc_configure_bank(struct jz4780_nemc
> *nemc,
> return false;
> }
>
> - smcr |= convert_tBP_tAW[cycles] << NEMC_SMCR_TAW_SHIFT;
> + smcr |= (u32)convert_tBP_tAW[cycles] << NEMC_SMCR_TAW_SHIFT;
> }
>
> if (of_property_read_u32(node, "ingenic,nemc-tSTRV", &val) == 0) {
