On 03/10/13 22:04, Axel Lin wrote:
Simplify the code to set/clear BM_SD_OFF bit: | power_inverted: 0 | power_inverted: 1 ------------------------------------------------- enable: 0 | SET BM_SD_OFF | CLEAR BM_SD_OFF ------------------------------------------------- enable: 1 | CLEAR BM_SD_OFF | SET BM_SD_OFF Signed-off-by: Axel Lin <axel.lin@xxxxxxxxxx> --- drivers/mmc/host/wmt-sdmmc.c | 30 ++++++++---------------------- 1 file changed, 8 insertions(+), 22 deletions(-) diff --git a/drivers/mmc/host/wmt-sdmmc.c b/drivers/mmc/host/wmt-sdmmc.c index 34231d5..57858ef 100644 --- a/drivers/mmc/host/wmt-sdmmc.c +++ b/drivers/mmc/host/wmt-sdmmc.c @@ -212,28 +212,14 @@ struct wmt_mci_priv {static void wmt_set_sd_power(struct wmt_mci_priv *priv, int enable){ - u32 reg_tmp; - if (enable) { - if (priv->power_inverted) { - reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); - writeb(reg_tmp | BM_SD_OFF, - priv->sdmmc_base + SDMMC_BUSMODE); - } else { - reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); - writeb(reg_tmp & (~BM_SD_OFF), - priv->sdmmc_base + SDMMC_BUSMODE); - } - } else { - if (priv->power_inverted) { - reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); - writeb(reg_tmp & (~BM_SD_OFF), - priv->sdmmc_base + SDMMC_BUSMODE); - } else { - reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); - writeb(reg_tmp | BM_SD_OFF, - priv->sdmmc_base + SDMMC_BUSMODE); - } - } + u32 reg_tmp = readb(priv->sdmmc_base + SDMMC_BUSMODE); + + if (enable ^ priv->power_inverted) + reg_tmp &= ~BM_SD_OFF; + else + reg_tmp |= BM_SD_OFF; + + writeb(reg_tmp, priv->sdmmc_base + SDMMC_BUSMODE); }static void wmt_mci_read_response(struct mmc_host *mmc)
Acked-by: Tony Prisk <linux@xxxxxxxxxxxxxxx> Thanks Axel - much better code. Regards Tony Prisk -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
