Problem of i.MX6ULL UART transmit-receive by interrupt

[jimmyli]

Hi, 

      I have a problem about the uart of i.mx6ull working in interrupt mode.

     1>condition

         Linux version: L4.1.15

         Work flow: fast transmit or receive by interrupt.

     2>result

         a. when uart in work flow after some time, it will cause "kernel panic";

         b. error log:

            Unhandled fault : external abort on non-linefetch (0x1008) at 0xc88f4000

     How can I fix it ?

     Thanks.

[igorpadykov]

Hi Jimmy

Linux L4.1.15 is very old version not more supported, may be recommended

to try latest Linux 4.14.98_2.3.0 Documentation  or Linux 4.19.35_1.1.0 Documentation

linux-imx - i.MX Linux kernel 

Best regards
igor
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[jimmyli]

Hi Igor,

     Thanks for your reply.

     But, we have developed in L4.1.15, it may be a huge work to update the version.

     If you have another suggestion, we will try.

    Thanks again.