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path: root/drivers/input/misc/uinput.c
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Diffstat (limited to 'drivers/input/misc/uinput.c')
-rw-r--r--drivers/input/misc/uinput.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index 782df415e4d5..4eb9e4d94f46 100644
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -272,6 +272,13 @@ static int uinput_create_device(struct uinput_device *udev)
input_set_events_per_packet(dev, 60);
}
+ if (test_bit(EV_FF, dev->evbit) && !udev->ff_effects_max) {
+ printk(KERN_DEBUG "%s: ff_effects_max should be non-zero when FF_BIT is set\n",
+ UINPUT_NAME);
+ error = -EINVAL;
+ goto fail1;
+ }
+
if (udev->ff_effects_max) {
error = input_ff_create(dev, udev->ff_effects_max);
if (error)