Do some minimal error checking of the parameters of
`comedi_auto_config()`. Just make sure the `hardware_device` and
`driver` parameters are non-NULL.
Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx>
---
drivers/staging/comedi/drivers.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c
index 4724f27..4460814 100644
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -410,6 +410,16 @@ int comedi_auto_config(struct device *hardware_device,
struct comedi_device *comedi_dev;
int ret;
+ if (!hardware_device) {
+ pr_warn("BUG! comedi_auto_config called with NULL hardware_device\n");
+ return -EINVAL;
+ }
+ if (!driver) {
+ dev_warn(hardware_device,
+ "BUG! comedi_auto_config called with NULL comedi driver\n");
+ return -EINVAL;
+ }
+
if (!driver->auto_attach) {
dev_warn(hardware_device,
"BUG! comedi driver '%s' has no auto_attach handler\n",
--
1.8.1.5
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