On Thu, Jul 07, 2022 at 06:08:18PM +0200, Marek Behún wrote: > On Thu, 7 Jul 2022 17:11:00 +0200 > Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > > On Thu, Jul 07, 2022 at 04:53:52PM +0200, Marek Behún wrote: > > > From: Pali Rohár <pali@xxxxxxxxxx> > > > > > > Use DIV_ROUND_CLOSEST() for more accurate baudrate calculation for > > > ASYNC_SPD_CUST instead of rounding it just down. > > > > Why? What does this change or fix? > > To compute more accurate baudrate when given custom divisor. > > User requests a baudrate B. > Application uses old API, so it computes divisor D for baudrate B. > The driver then tries to compute back the requested baudrate B. To > compute it back more accurately, rounding to closes value should be > used. Then please describe this in the changelog text, don't make us guess...
