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spapr-tpm-proxy: Drop misleading check

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Coverity is reporting in CID 1405304 that tpm_execute() may pass a NULL
tpm_proxy->host_path pointer to open(). This is based on the fact that
h_tpm_comm() does a NULL check on tpm_proxy->host_path and then passes
tpm_proxy to tpm_execute().

The check in h_tpm_comm() is abusive actually since a spapr-proxy-tpm
requires a non NULL host_path property, as checked during realize.

Fixes: 0fb6bd0732
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <156805260916.1779401.11054185183758185247.stgit@bahia.lan>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Greg Kurz 2019-09-09 20:10:09 +02:00 committed by David Gibson
parent f42b6f535c
commit 226c9d15df
1 changed files with 1 additions and 1 deletions
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2
hw/ppc/spapr_tpm_proxy.c
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@ -114,7 +114,7 @@ static target_ulong h_tpm_comm(PowerPCCPU *cpu,
return H_FUNCTION;
}
trace_spapr_h_tpm_comm(tpm_proxy->host_path ?: "null", op);
trace_spapr_h_tpm_comm(tpm_proxy->host_path, op);
switch (op) {
case TPM_COMM_OP_EXECUTE: