diff options
| author | Jiri Kosina <jkosina@suse.cz> | 2019-04-17 16:39:43 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2019-04-17 16:39:43 +0200 |
| commit | 59579a8d173ea727561868bbe989f83b2d24216f (patch) | |
| tree | 616b51771e03df1209e3570ccd59213d8a707cda /drivers/hid | |
| parent | e252e0e0028167ea3d1eafa99c2ff9f62c444b0a (diff) | |
HID: u2fzero: fail probe if not using USB transport
u2fzero driver is USB-only. Therefore we have to give up in ->probe()
callback in case we're called with non-USB transport driver bound,
otherwise the kernel will crash trying to use USBHID API on a non-USB
transport.
Fixes: 42337b9d4d958("HID: add driver for U2F Zero built-in LED and RNG")
Reported-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-u2fzero.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/hid/hid-u2fzero.c b/drivers/hid/hid-u2fzero.c index d11a5cb56a0d..95e0807878c7 100644 --- a/drivers/hid/hid-u2fzero.c +++ b/drivers/hid/hid-u2fzero.c @@ -286,6 +286,9 @@ static int u2fzero_probe(struct hid_device *hdev, unsigned int minor; int ret; + if (!hid_is_using_ll_driver(hdev, &usb_hid_driver)) + return -EINVAL; + dev = devm_kzalloc(&hdev->dev, sizeof(*dev), GFP_KERNEL); if (dev == NULL) return -ENOMEM; |