diff options
| -rw-r--r-- | drivers/tty/serial/stm32-usart.c | 33 |
1 files changed, 15 insertions, 18 deletions
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index 6248304a001f..a0ef86d71317 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -176,8 +176,7 @@ static int stm32_pending_rx(struct uart_port *port, u32 *sr, int *last_res, status = dmaengine_tx_status(stm32_port->rx_ch, stm32_port->rx_ch->cookie, &state); - if ((status == DMA_IN_PROGRESS) && - (*last_res != state.residue)) + if (status == DMA_IN_PROGRESS && (*last_res != state.residue)) return 1; else return 0; @@ -464,7 +463,7 @@ static irqreturn_t stm32_interrupt(int irq, void *ptr) writel_relaxed(USART_ICR_RTOCF, port->membase + ofs->icr); - if ((sr & USART_SR_WUF) && (ofs->icr != UNDEF_REG)) + if ((sr & USART_SR_WUF) && ofs->icr != UNDEF_REG) writel_relaxed(USART_ICR_WUCF, port->membase + ofs->icr); @@ -620,7 +619,6 @@ static void stm32_stop_rx(struct uart_port *port) stm32_clr_bits(port, ofs->cr1, stm32_port->cr1_irq); if (stm32_port->cr3_irq) stm32_clr_bits(port, ofs->cr3, stm32_port->cr3_irq); - } /* Handle breaks - ignored by us */ @@ -724,7 +722,7 @@ static unsigned int stm32_get_databits(struct ktermios *termios) } static void stm32_set_termios(struct uart_port *port, struct ktermios *termios, - struct ktermios *old) + struct ktermios *old) { struct stm32_port *stm32_port = to_stm32_port(port); struct stm32_usart_offsets *ofs = &stm32_port->info->ofs; @@ -923,7 +921,7 @@ stm32_verify_port(struct uart_port *port, struct serial_struct *ser) } static void stm32_pm(struct uart_port *port, unsigned int state, - unsigned int oldstate) + unsigned int oldstate) { struct stm32_port *stm32port = container_of(port, struct stm32_port, port); @@ -973,18 +971,17 @@ static int stm32_init_port(struct stm32_port *stm32port, struct resource *res; int ret; + ret = platform_get_irq(pdev, 0); + if (ret <= 0) + return ret ? : -ENODEV; + port->iotype = UPIO_MEM; port->flags = UPF_BOOT_AUTOCONF; port->ops = &stm32_uart_ops; port->dev = &pdev->dev; port->fifosize = stm32port->info->cfg.fifosize; port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_STM32_CONSOLE); - - ret = platform_get_irq(pdev, 0); - if (ret <= 0) - return ret ? : -ENODEV; port->irq = ret; - port->rs485_config = stm32_config_rs485; ret = stm32_init_rs485(port, pdev); @@ -1101,8 +1098,8 @@ static int stm32_of_dma_rx_probe(struct stm32_port *stm32port, return -ENODEV; } stm32port->rx_buf = dma_alloc_coherent(&pdev->dev, RX_BUF_L, - &stm32port->rx_dma_buf, - GFP_KERNEL); + &stm32port->rx_dma_buf, + GFP_KERNEL); if (!stm32port->rx_buf) { ret = -ENOMEM; goto alloc_err; @@ -1177,8 +1174,8 @@ static int stm32_of_dma_tx_probe(struct stm32_port *stm32port, return -ENODEV; } stm32port->tx_buf = dma_alloc_coherent(&pdev->dev, TX_BUF_L, - &stm32port->tx_dma_buf, - GFP_KERNEL); + &stm32port->tx_dma_buf, + GFP_KERNEL); if (!stm32port->tx_buf) { ret = -ENOMEM; goto alloc_err; @@ -1322,7 +1319,6 @@ static int stm32_serial_remove(struct platform_device *pdev) return err; } - #ifdef CONFIG_SERIAL_STM32_CONSOLE static void stm32_console_putchar(struct uart_port *port, int ch) { @@ -1335,7 +1331,8 @@ static void stm32_console_putchar(struct uart_port *port, int ch) writel_relaxed(ch, port->membase + ofs->tdr); } -static void stm32_console_write(struct console *co, const char *s, unsigned cnt) +static void stm32_console_write(struct console *co, const char *s, + unsigned int cnt) { struct uart_port *port = &stm32_ports[co->index].port; struct stm32_port *stm32_port = to_stm32_port(port); @@ -1388,7 +1385,7 @@ static int stm32_console_setup(struct console *co, char *options) * this to be called during the uart port registration when the * driver gets probed and the port should be mapped at that point. */ - if (stm32port->port.mapbase == 0 || stm32port->port.membase == NULL) + if (stm32port->port.mapbase == 0 || !stm32port->port.membase) return -ENXIO; if (options) |