On Thu, Nov 25, 2021 at 08:29:25PM +0800, allen-kh.cheng wrote:
> diff --git a/drivers/mailbox/mtk-adsp-mailbox.c b/drivers/mailbox/mtk-adsp-mailbox.c
[...]
> +static bool mtk_adsp_mbox_last_tx_done(struct mbox_chan *chan)
> +{
> + struct adsp_mbox_ch_info *ch_info = chan->con_priv;
> + void __iomem *reg = ch_info->va_reg;
> +
> + return (readl(reg + MTK_ADSP_MBOX_IN_CMD) == 0) ? true : false;
To be concise, readl(reg + MTK_ADSP_MBOX_IN_CMD) == 0.
> +static int mtk_adsp_mbox_probe(struct platform_device *pdev)
> +{
[...]
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!res) {
> + dev_err(dev, "no adsp mbox register resource\n");
> + return -ENXIO;
> + }
> +
> + priv->va_mboxreg = devm_platform_ioremap_resource(pdev, 0);
> + if (IS_ERR(priv->va_mboxreg))
> + return PTR_ERR(priv->va_mboxreg);
If using devm_platform_ioremap_resource(), it doesn't need to call platform_get_resource(). res is unused.
