In prom_putchar(), wait for just the TX empty bit to clear in the UART LSR. Signed-off-by: Jayachandran C <jayachandranc@xxxxxxxxxxxxxxxxx> --- [Updated to use UART_LSR_THRE instead of 0x20, as suggested by Florian Fainelli <florian@xxxxxxxxxxx>] arch/mips/netlogic/common/earlycons.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/mips/netlogic/common/earlycons.c b/arch/mips/netlogic/common/earlycons.c index f193f7b..53b200a5 100644 --- a/arch/mips/netlogic/common/earlycons.c +++ b/arch/mips/netlogic/common/earlycons.c @@ -54,7 +54,7 @@ void prom_putchar(char c) #elif defined(CONFIG_CPU_XLR) uartbase = nlm_mmio_base(NETLOGIC_IO_UART_0_OFFSET); #endif - while (nlm_read_reg(uartbase, UART_LSR) == 0) + while ((nlm_read_reg(uartbase, UART_LSR) & UART_LSR_THRE) == 0) ; nlm_write_reg(uartbase, UART_TX, c); } -- 1.7.9.5
