This is a note to let you know that I've just added the patch titled serial: mvebu-uart: fix calculation of clock divisor to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: serial-mvebu-uart-fix-calculation-of-clock-divisor.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 9078204ca5c33ba20443a8623a41a68a9995a70d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@xxxxxxxxxx> Date: Fri, 25 Jun 2021 00:49:00 +0200 Subject: serial: mvebu-uart: fix calculation of clock divisor MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Pali Rohár <pali@xxxxxxxxxx> commit 9078204ca5c33ba20443a8623a41a68a9995a70d upstream. The clock divisor should be rounded to the closest value. Signed-off-by: Pali Rohár <pali@xxxxxxxxxx> Fixes: 68a0db1d7da2 ("serial: mvebu-uart: add function to change baudrate") Cc: stable@xxxxxxxxxxxxxxx # 0e4cf69ede87 ("serial: mvebu-uart: clarify the baud rate derivation") Link: https://lore.kernel.org/r/20210624224909.6350-2-pali@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/tty/serial/mvebu-uart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- 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(stru * 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; Patches currently in stable-queue which might be from pali@xxxxxxxxxx are queue-4.19/serial-mvebu-uart-correctly-calculate-minimal-possib.patch queue-4.19/ath9k-fix-kernel-null-pointer-dereference-during-ath_reset_internal.patch queue-4.19/arm64-dts-marvell-armada-37xx-fix-reg-for-standard-v.patch queue-4.19/serial-mvebu-uart-fix-calculation-of-clock-divisor.patch