From bed05b6c3434e62310c2e37ef234f02ce57cf74d Mon Sep 17 00:00:00 2001
From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Tue, 22 Mar 2016 11:10:40 -0700
Subject: [PATCH] staging: comedi: ni_tio: make ni_gpct_device_destroy() NULL
pointer safe
Modify the pointer check to make this function NULL pointer safe.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/comedi/drivers/ni_tio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/comedi/drivers/ni_tio.c b/drivers/staging/comedi/drivers/ni_tio.c
index b74e44ec521a..623fc6c7bff0 100644
--- a/drivers/staging/comedi/drivers/ni_tio.c
+++ b/drivers/staging/comedi/drivers/ni_tio.c
@@ -1413,7 +1413,7 @@ EXPORT_SYMBOL_GPL(ni_gpct_device_construct);
void ni_gpct_device_destroy(struct ni_gpct_device *counter_dev)
{
- if (!counter_dev->counters)
+ if (!counter_dev)
return;
kfree(counter_dev->counters);
kfree(counter_dev);
--
2.30.9