Re: [PATCH 1/2] tpm, tpm_tis: Handle interrupt storm

[Lukas Wunner]

On Tue, May 23, 2023 at 12:35:09PM +0300, Péter Ujfalusi wrote:
> In some boot I don't get a print at all and reboot takes
> 2 minutes (tpm timeout), or as it happened now:
> 
> # dmesg | grep tpm
> [    4.306999] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0x1B, rev-id 22)
> [    4.325868] [PETER] tpm_tis_process_unhandled_interrupt: unhandled_irqs: 1
> [    4.325908] [PETER] tpm_tis_process_unhandled_interrupt: unhandled_irqs: 2
> ...
> [    4.329579] [PETER] tpm_tis_process_unhandled_interrupt: unhandled_irqs: 91
> [    5.129056] [PETER] tpm_tis_process_unhandled_interrupt: unhandled_irqs: 1
> ...
> [    5.129561] [PETER] tpm_tis_process_unhandled_interrupt: unhandled_irqs: 10

This looks like the interrupt line may be floating and any interrupts
you get are probably caused by induced static or something.

Thanks,

Lukas