Re: FSL serial 166550 errata broken?

On 09/25/2017 09:55 AM, Joakim Tjernlund wrote:=0A=

We got some "broken" boards(mpx8321) where UART RX is held low(BREAK)=0A=
There we get a few:=0A=
   serial8250: too much work for irq18=0A=
and the board freezes.=0A=
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Looking inte to driver/CPU there is an errtum(A-004737) w.r.t BREAK handl=

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and I can see we are hitting the irq function fsl8250_handle_irq() added=

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in commit: 9deaa53ac7fa373623123aa4f18828dd62292b1a=0A=
  "serial: add irq handler for Freescale 16550 errata."=0A=
For all I can tell this workaround is broken and I cannot figure out why.=

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Any pointers?=0A=
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Jocke,=0A=
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Did you mean MPC8321?=0A=
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I personally don't have experience debugging this erratum. Have you =0A=
tried to contact the patch author Paul Gortmaker to see how he managed =0A=
to get it work?=0A=
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York=0A=