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MIPS: Netlogic: early console fix

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In prom_putchar(), wait for just the TX empty bit to clear in the
UART LSR.

Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Cc: linux-mips@linux-mips.org
Cc: Florian Fainelli <florian@openwrt.org>
Patchwork: https://patchwork.linux-mips.org/patch/4112/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Jayachandran C 2012-07-16 15:33:37 +05:30 committed by Ralf Baechle
parent 93a0293259
commit 7e6507ad76
1 changed files with 1 additions and 1 deletions
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2
arch/mips/netlogic/common/earlycons.c
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@ -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);
}