diff options
| author | Pali Rohár <pali@kernel.org> | 2021-06-25 00:49:00 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-20 16:16:03 +0200 |
| commit | 3941cf9b4b28fb787f98bbdae953ae433c19900e (patch) | |
| tree | 36010c8f11c4c6b60710cbe06837c10cc18294a8 /drivers/tty | |
| parent | 424f497d9bdc24185bcaebc1f3f458a8d85e9d87 (diff) | |
serial: mvebu-uart: fix calculation of clock divisor
commit 9078204ca5c33ba20443a8623a41a68a9995a70d upstream.
The clock divisor should be rounded to the closest value.
Signed-off-by: Pali Rohár <pali@kernel.org>
Fixes: 68a0db1d7da2 ("serial: mvebu-uart: add function to change baudrate")
Cc: stable@vger.kernel.org # 0e4cf69ede87 ("serial: mvebu-uart: clarify the baud rate derivation")
Link: https://lore.kernel.org/r/20210624224909.6350-2-pali@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/mvebu-uart.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/mvebu-uart.c b/drivers/tty/serial/mvebu-uart.c index 87ec05fef480..f0107d5df99e 100644 --- a/drivers/tty/serial/mvebu-uart.c +++ b/drivers/tty/serial/mvebu-uart.c @@ -462,7 +462,7 @@ static int mvebu_uart_baud_rate_set(struct uart_port *port, unsigned int baud) * makes use of D to configure the desired baudrate. */ m_divisor = OSAMP_DEFAULT_DIVISOR; - d_divisor = DIV_ROUND_UP(port->uartclk, baud * m_divisor); + d_divisor = DIV_ROUND_CLOSEST(port->uartclk, baud * m_divisor); brdv = readl(port->membase + UART_BRDV); brdv &= ~BRDV_BAUD_MASK; |