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Commit 7e6507ad76a212b961d2392d22a9610be9e4e053

Authored by Jayachandran C
Committed by Ralf Baechle
1 parent 93a0293259
Exists in smarc-l5.0.0_1.0.0-ga and in 5 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga

MIPS: Netlogic: early console fix 

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>

Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff

arch/mips/netlogic/common/earlycons.c
Diff comments   View file @ 7e6507a
... ... @@ -54,7 +54,7 @@
54 54 #elif defined(CONFIG_CPU_XLR)
55 55 uartbase = nlm_mmio_base(NETLOGIC_IO_UART_0_OFFSET);
56 56 #endif
57   - while (nlm_read_reg(uartbase, UART_LSR) == 0)
  57 + while ((nlm_read_reg(uartbase, UART_LSR) & UART_LSR_THRE) == 0)
58 58 ;
59 59 nlm_write_reg(uartbase, UART_TX, c);
60 60 }