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authorPali Rohár <pali@kernel.org>2021-06-25 00:49:00 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-06-25 13:53:10 +0200
commit9078204ca5c33ba20443a8623a41a68a9995a70d (patch)
tree79db23254ad2a5406b6f02db39afa15aea6f5acb /drivers
parenttty: make linux/tty_flip.h self-contained (diff)
downloadlinux-9078204ca5c33ba20443a8623a41a68a9995a70d.tar.xz
linux-9078204ca5c33ba20443a8623a41a68a9995a70d.zip
serial: mvebu-uart: fix calculation of clock divisor
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')
-rw-r--r--drivers/tty/serial/mvebu-uart.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/mvebu-uart.c b/drivers/tty/serial/mvebu-uart.c
index 04c41689d81c..f3ecbcf495ee 100644
--- a/drivers/tty/serial/mvebu-uart.c
+++ b/drivers/tty/serial/mvebu-uart.c
@@ -463,7 +463,7 @@ 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;