Check for the parent device being NULL before accessing it. This
prevents crashed with the vtpm_proxy driver, since this driver
does not have a parent device.
Signed-off-by: Stefan Berger <stef...@linux.vnet.ibm.com>
---
drivers/char/tpm/tpm_of.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/char/tpm/tpm_of.c b/drivers/char/tpm/tpm_of.c
index 36df9df..72c282e 100644
--- a/drivers/char/tpm/tpm_of.c
+++ b/drivers/char/tpm/tpm_of.c
@@ -29,7 +29,7 @@ int tpm_read_log_of(struct tpm_chip *chip)
struct tpm_bios_log *log;
log = &chip->log;
- if (chip->dev.parent->of_node)
+ if (chip->dev.parent && chip->dev.parent->of_node)
np = chip->dev.parent->of_node;
else
return -ENODEV;
--
2.4.3
------------------------------------------------------------------------------
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