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-rw-r--r--drivers/char/tpm/tpm-chip.c7
-rw-r--r--drivers/char/tpm/tpm.h1
2 files changed, 6 insertions, 2 deletions
diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
index 57d9794dac94..1965dc780688 100644
--- a/drivers/char/tpm/tpm-chip.c
+++ b/drivers/char/tpm/tpm-chip.c
@@ -181,6 +181,9 @@ struct tpm_chip *tpm_chip_alloc(struct device *dev,
if (rc)
goto out;
+ if (!dev)
+ chip->flags |= TPM_CHIP_FLAG_VIRTUAL;
+
cdev_init(&chip->cdev, &tpm_fops);
chip->cdev.owner = THIS_MODULE;
chip->cdev.kobj.parent = &chip->dev.kobj;
@@ -298,7 +301,7 @@ static void tpm_del_legacy_sysfs(struct tpm_chip *chip)
{
struct attribute **i;
- if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ if (chip->flags & (TPM_CHIP_FLAG_TPM2 | TPM_CHIP_FLAG_VIRTUAL))
return;
sysfs_remove_link(&chip->dev.parent->kobj, "ppi");
@@ -316,7 +319,7 @@ static int tpm_add_legacy_sysfs(struct tpm_chip *chip)
struct attribute **i;
int rc;
- if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ if (chip->flags & (TPM_CHIP_FLAG_TPM2 | TPM_CHIP_FLAG_VIRTUAL))
return 0;
rc = __compat_only_sysfs_link_entry_to_kobj(
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 508e8e00c9c1..ff4e53cde70e 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -138,6 +138,7 @@ enum tpm_chip_flags {
TPM_CHIP_FLAG_REGISTERED = BIT(0),
TPM_CHIP_FLAG_TPM2 = BIT(1),
TPM_CHIP_FLAG_IRQ = BIT(2),
+ TPM_CHIP_FLAG_VIRTUAL = BIT(3),
};
struct tpm_chip {