hello,
i did what you told me, i compiled the kernet with patch which you send me,
and the result of dmesg
[ 1636.156641] base=0x2f8 iir=0x1
[ 1636.157672] base=0x2f8 iir=0x4
[ 1636.157675] base=0x2f8 status=0x100
[ 1636.157677] base=0x2f8 iir=0x1
[ 1636.158713] base=0x2f8 iir=0x4
[ 1636.158715]
Hi Philippe,
We have found that the problem is that the interrupt is unexpectedly
held masked at the IPIC level for a long time. Please find the trace below:
2552 :| + func -544130.590
qe_ic_cascade_low_ipic+0x8 (__ipipe_ack_irq+0x2c)
2553 :| + func -54412