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Subject[PATCH] tpm: print tpm error code in hex for TPM2.0 devices
Date
For easier decoding, output the error code returned
from the tpm device in hex when the device is TPM2.0.

Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: Peter Huewe <peterhuewe@gmx.de>
Cc: Marcel Selhorst <tpmdd@selhorst.net>
Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reported-by: Ken Goldman <kgoldman@us.ibm.com>
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
---
drivers/char/tpm/tpm-interface.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index bd2128e0b56c..b6c67eef9ae7 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -453,9 +453,14 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, const void *buf,
return -EFAULT;

err = be32_to_cpu(header->return_code);
- if (err != 0 && desc)
- dev_err(&chip->dev, "A TPM error (%d) occurred %s\n", err,
- desc);
+ if (err != 0 && desc) {
+ if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ dev_err(&chip->dev, "A TPM 2.0 error (0x%x) occurred %s\n",
+ err, desc);
+ else
+ dev_err(&chip->dev, "A TPM error (%d) occurred %s\n",
+ err, desc);
+ }
if (err)
return err;

--
2.13.0.rc0.45.ge2cb6ab84
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