diff --git a/[refs] b/[refs] index 8099cfa9fcc8..b2a5f7fd9059 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: ba0657ff0527bab83387e19eb98b423fcc290674 +refs/heads/master: 39d4c922b596633da86878b1a5cc881785b8e5fa diff --git a/trunk/drivers/serial/atmel_serial.c b/trunk/drivers/serial/atmel_serial.c index e99a28387505..430997e33fc4 100644 --- a/trunk/drivers/serial/atmel_serial.c +++ b/trunk/drivers/serial/atmel_serial.c @@ -107,6 +107,7 @@ #define UART_PUT_TPR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_TPR) #define UART_PUT_TCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_TCR) +#define UART_GET_TCR(port) __raw_readl((port)->membase + ATMEL_PDC_TCR) static int (*atmel_open_hook)(struct uart_port *); static void (*atmel_close_hook)(struct uart_port *); @@ -1275,6 +1276,7 @@ static void atmel_console_write(struct console *co, const char *s, u_int count) { struct uart_port *port = &atmel_ports[co->index].uart; unsigned int status, imr; + unsigned int pdc_tx; /* * First, save IMR and then disable interrupts @@ -1282,6 +1284,10 @@ static void atmel_console_write(struct console *co, const char *s, u_int count) imr = UART_GET_IMR(port); UART_PUT_IDR(port, ATMEL_US_RXRDY | ATMEL_US_TXRDY); + /* Store PDC transmit status and disable it */ + pdc_tx = UART_GET_PTSR(port) & ATMEL_PDC_TXTEN; + UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS); + uart_console_write(port, s, count, atmel_console_putchar); /* @@ -1291,6 +1297,11 @@ static void atmel_console_write(struct console *co, const char *s, u_int count) do { status = UART_GET_CSR(port); } while (!(status & ATMEL_US_TXRDY)); + + /* Restore PDC transmit status */ + if (pdc_tx) + UART_PUT_PTCR(port, ATMEL_PDC_TXTEN); + /* set interrupts back the way they were */ UART_PUT_IER(port, imr); }