* Andy Shevchenko <andy.shevchenko@xxxxxxxxx> [210713 09:14]: > On Tue, Jul 13, 2021 at 11:54 AM Vignesh Raghavendra <vigneshr@xxxxxx> wrote: > > On 7/13/21 1:57 AM, andy@surfacebook.localdomain wrote: > > > Tue, Jun 22, 2021 at 11:53:38AM +0530, Vignesh Raghavendra kirjoitti: > > ... > > > > https://lore.kernel.org/linux-serial/20170206233000.3021-1-dianders@xxxxxxxxxxxx/ > > > > I am not sure if reading UART_LSR is a good idea in the above patch. > > Some flags in LSR register are cleared on read (at least that's the case > > for UARTs on TI SoCs) and thus can result in loss of error/FIFO status > > information. > > > > > https://lore.kernel.org/linux-serial/1440015124-28393-1-git-send-email-california.l.sullivan@xxxxxxxxx/ > > > > Looks like this never made it. > > Forgot to react to the above. Yes, they never made it because I > believe due to the exact reason you mentioned above. Also California > set up different experiments IIRC and it shows that the problem didn;t > fully disappear with his approach. But maybe yours will work better > (at least it's not the first time I have seen it on different hardware > according to people's contributions). Not sure if this is the same issue with noisy lines, but see also the following in case it's related: [PATCH 2/2] serial: 8250_omap: Handle optional overrun-throttle-ms property Also available at [0] below. Regards, Tony [0] https://lore.kernel.org/linux-omap/20210727103533.51547-1-tony@xxxxxxxxxxx/T/#m5f9da26c32503f2937d3d5977310ca337fa0cb5a
