OrgACRN
/
acrn-kernel
mirror of https://github.com/projectacrn/acrn-kernel.git
1
0
Fork 0
Code Issues Releases Wiki Activity

tpm: vtpm_proxy: Avoid reading host log when using a virtual device 

Avoid allocating memory and reading the host log when a virtual device
is used since this log is of no use to that driver. A virtual
device can be identified through the flag TPM_CHIP_FLAG_VIRTUAL, which
is only set for the tpm_vtpm_proxy driver.

Cc: stable@vger.kernel.org
Fixes: 6f99612e25 ("tpm: Proxy driver for supporting multiple emulated TPMs")
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
This commit is contained in:
Stefan Berger 2021-03-10 17:19:16 -05:00 committed by Jarkko Sakkinen
parent 3dcd15665a
commit 9716ac65ef
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/char/tpm/eventlog/common.c
View File

@ -107,6 +107,9 @@ void tpm_bios_log_setup(struct tpm_chip *chip)
int log_version;
int rc = 0;
if (chip->flags & TPM_CHIP_FLAG_VIRTUAL)
return;
rc = tpm_read_log(chip);
if (rc < 0)
return;