On Mon, Jul 12, 2021 at 12:25:05PM -0400, Stefan Berger wrote: > From: Stefan Berger <stefanb@xxxxxxxxxxxxx> > > When rngd is run as root then lots of these types of message will appear > in the kernel log if the TPM has been configure to provide random bytes: > > [ 7406.275163] tpm tpm0: tpm_transmit: tpm_recv: error -4 > > The issue is caused by the following call that is interrupted while > waiting for the TPM's response. > > sig = wait_event_interruptible(ibmvtpm->wq, > !ibmvtpm->tpm_processing_cmd); > > The solution is to use wait_event() instead. Why? /Jarkko
