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8250_tegra: clean up tegra_uart_handle_break

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* switch "do { A; } while (1)" to "while (1) { A; }"
* switch "if (A) B; else break;" to "if (!A) break; B;"
* remove unused assignment from p->serial_in() to status

Objdump -d shows no difference.

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210105120239.28031-6-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2021-01-05 13:02:33 +01:00 committed by Greg Kroah-Hartman
parent 9bc1b2b9b8
commit 7d7dec450a
1 changed files with 6 additions and 5 deletions
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11
drivers/tty/serial/8250/8250_tegra.c
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@ -26,16 +26,17 @@ static void tegra_uart_handle_break(struct uart_port *p)
{
unsigned int status, tmout = 10000;
do {
while (1) {
status = p->serial_in(p, UART_LSR);
if (status & (UART_LSR_FIFOE | UART_LSR_BRK_ERROR_BITS))
status = p->serial_in(p, UART_RX);
else
if (!(status & (UART_LSR_FIFOE | UART_LSR_BRK_ERROR_BITS)))
break;
p->serial_in(p, UART_RX);
if (--tmout == 0)
break;
udelay(1);
} while (1);
}
}
static int tegra_uart_probe(struct platform_device *pdev)