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HID: hid-logitech-hidpp: add NULL check on devm_kmemdup() return value 

Check return value from call to devm_kmemdup() in order to prevent a NULL
pointer dereference.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Gustavo A. R. Silva 2017-07-07 00:12:13 -05:00 committed by Jiri Kosina
parent 4cf56a89c6
commit 929b60a85b
1 changed files with 3 additions and 0 deletions
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3
drivers/hid/hid-logitech-hidpp.c
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@ -2732,6 +2732,9 @@ static int hidpp_initialize_battery(struct hidpp_device *hidpp)
hidpp_battery_props,
sizeof(hidpp_battery_props),
GFP_KERNEL);
if (!battery_props)
return -ENOMEM;
num_battery_props = ARRAY_SIZE(hidpp_battery_props) - 2;
if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_MILEAGE)