From: Stefan Berger <stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: [PATCH 1/2] tpm: Check for parent device being NULL
Date: Thu, 17 Nov 2016 19:30:03 -0500 [thread overview]
Message-ID: <1479429004-7962-1-git-send-email-stefanb@linux.vnet.ibm.com> (raw)
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 <stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
---
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
------------------------------------------------------------------------------
next reply other threads:[~2016-11-18 0:30 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-18 0:30 Stefan Berger [this message]
[not found] ` <1479429004-7962-1-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2016-11-18 0:30 ` [PATCH 2/2] tpm: Fix error code handling after tpm_bios_log_setup Stefan Berger
[not found] ` <1479429004-7962-2-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2016-11-18 12:26 ` Nayna
2016-11-18 15:52 ` Jarkko Sakkinen
2016-11-19 18:22 ` Jason Gunthorpe
2016-11-20 9:46 ` Jarkko Sakkinen
2016-11-20 9:47 ` Jarkko Sakkinen
2016-11-20 12:14 ` Jarkko Sakkinen
[not found] ` <20161120121451.awcraondhcvzpbig-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-11-21 17:55 ` Jason Gunthorpe
2016-11-21 20:30 ` Jarkko Sakkinen
[not found] ` <20161121175520.GA24191-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-11-21 20:32 ` Jarkko Sakkinen
2016-11-21 20:36 ` Jarkko Sakkinen
2016-11-21 20:37 ` Jason Gunthorpe
[not found] ` <20161121203708.GA7294-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-11-21 20:46 ` Jarkko Sakkinen
2016-11-21 20:56 ` Jason Gunthorpe
2016-11-20 18:36 ` Nayna
2016-11-21 17:15 ` Jason Gunthorpe
2016-11-21 20:29 ` Jarkko Sakkinen
2016-11-22 16:37 ` Jason Gunthorpe
[not found] ` <20161122163720.GB3956-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-11-22 16:48 ` Jarkko Sakkinen
2016-11-22 9:04 ` Nayna
2016-11-18 15:52 ` [PATCH 1/2] tpm: Check for parent device being NULL Jarkko Sakkinen
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