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| author | Serge Semin <Sergey.Semin@baikalelectronics.ru> | 2020-09-23 19:19:48 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-30 14:52:42 +0200 |
| commit | 7718453e36960dadb8dc46f2b514b309659e1270 (patch) | |
| tree | 8766d1854000c21ccae32a3db3d0276f342b0328 /drivers/tty | |
| parent | edd64f30792dca1aee1fc27381b7c9c1ec0e9e58 (diff) | |
| download | linux-7718453e36960dadb8dc46f2b514b309659e1270.tar.gz linux-7718453e36960dadb8dc46f2b514b309659e1270.tar.bz2 linux-7718453e36960dadb8dc46f2b514b309659e1270.zip | |
serial: 8250: Discard RTS/DTS setting from clock update method
It has been a mistake to add the MCR register RTS/DTS fields setting in
the generic method of the UART reference clock update. There is no point
in asserting these lines at that procedure. Just discard the
serial8250_out_MCR() mathod invocation from there then.
Fixes: 868f3ee6e452 ("serial: 8250: Add 8250 port clock update method")
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Link: https://lore.kernel.org/r/20200923161950.6237-2-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index c71d647eb87a..1259fb6b66b3 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -2665,7 +2665,6 @@ void serial8250_update_uartclk(struct uart_port *port, unsigned int uartclk) serial8250_set_divisor(port, baud, quot, frac); serial_port_out(port, UART_LCR, up->lcr); - serial8250_out_MCR(up, UART_MCR_DTR | UART_MCR_RTS); spin_unlock_irqrestore(&port->lock, flags); serial8250_rpm_put(up); |