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). -- With Best Regards, Andy Shevchenko
