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authorStefan Berger <stefanb@linux.ibm.com>2020-03-12 18:53:30 +0300
committerJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>2020-03-13 18:31:26 +0300
commit5cb2ace90deb6df9c90172f904fb4a12ee4d443a (patch)
treeac1cb8fedb858c4b9181c90ef97ddc6cfc1ef07c /drivers/char/tpm
parent77b400d7a1e886af09d04db6014387fdd57625bb (diff)
downloadlinux-5cb2ace90deb6df9c90172f904fb4a12ee4d443a.tar.xz
tpm: of: Handle IBM,vtpm20 case when getting log parameters
A vTPM 2.0 is identified by 'IBM,vtpm20' in the 'compatible' node in the device tree. Handle it in the same way as 'IBM,vtpm'. The vTPM 2.0's log is written in little endian format so that for this aspect we can rely on existing code. Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> Acked-by: Nayna Jain <nayna@linux.ibm.com> Tested-by: Nayna Jain <nayna@linux.ibm.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Diffstat (limited to 'drivers/char/tpm')
-rw-r--r--drivers/char/tpm/eventlog/of.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/char/tpm/eventlog/of.c b/drivers/char/tpm/eventlog/of.c
index af347c190819..a9ce66d09a75 100644
--- a/drivers/char/tpm/eventlog/of.c
+++ b/drivers/char/tpm/eventlog/of.c
@@ -51,7 +51,8 @@ int tpm_read_log_of(struct tpm_chip *chip)
* endian format. For this reason, vtpm doesn't need conversion
* but physical tpm needs the conversion.
*/
- if (of_property_match_string(np, "compatible", "IBM,vtpm") < 0) {
+ if (of_property_match_string(np, "compatible", "IBM,vtpm") < 0 &&
+ of_property_match_string(np, "compatible", "IBM,vtpm20") < 0) {
size = be32_to_cpup((__force __be32 *)sizep);
base = be64_to_cpup((__force __be64 *)basep);
} else {