diff options
| author | Kunihiko Hayashi <hayashi.kunihiko@socionext.com> | 2022-07-13 10:38:59 +0900 |
|---|---|---|
| committer | Michal Simek <michal.simek@amd.com> | 2022-07-26 08:23:55 +0200 |
| commit | c6bceb4e360d704fb9746541c18a1a08f49353fc (patch) | |
| tree | 0ae75743c33c6898f5b727a5f028289e8396139d | |
| parent | 65fc1697dbfbf61680e6a9cdad0a2d7dd2f9bed9 (diff) | |
serial: zynq: Use DIV_ROUND_CLOSEST() to calcurate divider value
Since the calulation of "bgen" is rounded down, using a higher
baudrate will result in a larger difference from the actual
baudrate. Should use DIV_ROUND_CLOSEST() like the Linux driver.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/1657676339-6055-1-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
| -rw-r--r-- | drivers/serial/serial_zynq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/serial/serial_zynq.c b/drivers/serial/serial_zynq.c index 83adfb5fb98..295337a8176 100644 --- a/drivers/serial/serial_zynq.c +++ b/drivers/serial/serial_zynq.c @@ -75,7 +75,7 @@ static void _uart_zynq_serial_setbrg(struct uart_zynq *regs, * Find acceptable values for baud generation. */ for (bdiv = 4; bdiv < 255; bdiv++) { - bgen = clock / (baud * (bdiv + 1)); + bgen = DIV_ROUND_CLOSEST(clock, baud * (bdiv + 1)); if (bgen < 2 || bgen > 65535) continue; |