Commit 6cd65969 authored by Stefan Berger's avatar Stefan Berger Committed by Stefan Berger
Browse files

tpm_tis: Return 0 for every register in case of failure mode 



Rather than returning ~0, return 0 for every register in case of failure
mode. The '0' is better to indicate that there's no device there. It avoids
SeaBIOS detecting a device and getting stuck on it trying to read and write
its registers.

Signed-off-by: default avatarStefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: default avatarMarc-André Lureau <marcandre.lureau@redhat.com>
parent ad4aca69

hw/tpm/tpm_tis.c

+1 −1
Original line number Diff line number Diff line
@@ -545,7 +545,7 @@ static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr, 
    uint8_t v;



    if (tpm_backend_had_startup_error(s->be_driver)) {

        return val;

        return 0;

    }



    switch (offset) {