Hi Jon and Michael, On Wed, 24 Jun 2015 12:47:16 -0400, Jon Ringle wrote: > +Jakub, linux-serial > > Michael, let the list know what you find. I don't have access to a > sc16is7xx device with more than one port. > > Jon > > On Wed, Jun 24, 2015 at 10:59 AM, Michael Allwright > <michael.allwright@xxxxxx> wrote: > > Thanks Jon, > > > > This version of the driver is no longer causing those threading > > complaints on the OMAP4 platform, opening the first port of the > > sc16is762 works perfectly, but the second port appears to be > > overflowing and giving me garbage. Even after exiting picocom I get > > these messages every 2-3 seconds and the system takes a long time (a > > minute or so?) to recover. > > > > [ 505.289154] sc16is7xx_handle_rx: XXXX callbacks suppressed > > [ 505.294921] sc16is7xx 1-0048: Port 1: Possible RX FIFO overrun: 64 > > [ 505.303894] sc16is7xx 1-0048: Port 1: Possible RX FIFO overrun: 64 > > [ 505.312835] sc16is7xx 1-0048: Port 1: Possible RX FIFO overrun: 64 > > [ 505.321807] sc16is7xx 1-0048: Port 1: Possible RX FIFO overrun: 64 > > [ 505.330688] sc16is7xx 1-0048: Port 1: Possible RX FIFO overrun: 64 > > [ 505.339599] sc16is7xx 1-0048: Port 1: Possible RX FIFO overrun: 64 > > [ 505.348663] sc16is7xx 1-0048: Port 1: Possible RX FIFO overrun: 64 > > [ 505.357635] sc16is7xx 1-0048: Port 1: Possible RX FIFO overrun: 64 > > [ 505.366577] sc16is7xx 1-0048: Port 1: Possible RX FIFO overrun: 64 > > [ 505.375701] sc16is7xx 1-0048: Port 1: Possible RX FIFO overrun: 64 > > > > where XXXX is typically around 2000 callbacks. I will investigate > > tomorrow and try find a solution. I don't have any dual-port devices to test either unfortunately but it looks like the issue Bo was trying to fix recently [1]. Please try his patch and let us know if it solves the problem for you. The patch did not make it into tty-next before the merge window so it will take at least two weeks before it shows up there. I don't have any dual-port devices to test this either unfortunately. [1] http://www.spinics.net/lists/linux-serial/msg17820.html -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
