Hi Jon Lin, On Tue, Apr 27, 2021 at 03:37:27PM +0800, Jon Lin wrote: > +static inline void wait_for_tx_idle(struct rockchip_spi *rs, bool slave_mode) > { > unsigned long timeout = jiffies + msecs_to_jiffies(5); > > do { > - if (!(readl_relaxed(rs->regs + ROCKCHIP_SPI_SR) & SR_BUSY)) > - return; > + if (slave_mode) { > + if (!(readl_relaxed(rs->regs + ROCKCHIP_SPI_SR) & SR_SLAVE_TX_BUSY) && > + !((readl_relaxed(rs->regs + ROCKCHIP_SPI_SR) & SR_BUSY)) > + return; This doesn't compile. There is one opening brace too much before the readl_relaxed. Regards, Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |