From 6cd65969da57eaa9bdff07b80ecca2becce0597a Mon Sep 17 00:00:00 2001 From: Stefan Berger Date: Fri, 10 Nov 2017 22:33:14 -0500 Subject: [PATCH] tpm_tis: Return 0 for every register in case of failure mode MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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: Stefan Berger Reviewed-by: Marc-André Lureau --- hw/tpm/tpm_tis.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c index fec2fc617a..42d647d363 100644 --- a/hw/tpm/tpm_tis.c +++ b/hw/tpm/tpm_tis.c @@ -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) { -- 2.11.4.GIT