Commit 788f0923 authored Apr 02, 2013 by Chan-yeol Park Committed by Johan Hedberg Apr 04, 2013

Bluetooth: Fix possible NULL dereference in hci_uart_tty_receive



This patch adds a NULL check for the HCI UART ldisc driver because some
of HCI UART drivers allow hci_uart_tty_receive function to be called
even though the HCI device hasn't been registered yet.

Signed-off-by: Chan-yeol Park <chanyeol.park@samsung.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

parent c2578202

drivers/bluetooth/hci_ldisc.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -388,7 +388,10 @@ static void hci_uart_tty_receive(struct tty_struct tty, const u8 data, char *f

		spin_lock(&hu->rx_lock);
		hu->proto->recv(hu, (void *) data, count);

		if (hu->hdev)
		hu->hdev->stat.byte_rx += count;

		spin_unlock(&hu->rx_lock);

		tty_unthrottle(tty);