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serial: uartps: Use cdns_uart_tx_empty in console_write

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Instead of accessing the registers and checking for tx_empty,
use cdns_uart_tx_empty in cdns_uart_console_write function.

Signed-off-by: Raviteja Narayanam <raviteja.narayanam@xilinx.com>
Reviewed-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Link: https://lore.kernel.org/r/1586413563-29125-3-git-send-email-raviteja.narayanam@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Raviteja Narayanam 2020-04-09 11:56:03 +05:30 committed by Greg Kroah-Hartman
parent 42e11948dd
commit a8e7346b7c
1 changed files with 1 additions and 3 deletions
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4
drivers/tty/serial/xilinx_uartps.c
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@ -1233,9 +1233,7 @@ static void cdns_uart_console_write(struct console *co, const char *s,
writel(ctrl, port->membase + CDNS_UART_CR);
uart_console_write(port, s, count, cdns_uart_console_putchar);
while ((readl(port->membase + CDNS_UART_SR) &
(CDNS_UART_SR_TXEMPTY | CDNS_UART_SR_TACTIVE)) !=
CDNS_UART_SR_TXEMPTY)
while (cdns_uart_tx_empty(port) != TIOCSER_TEMT)
cpu_relax();
/* restore interrupt state */