[PATCH] chardev: GPIO for SCx200 & PC-8736x: use dev_dbg in common module

[firefly-linux-kernel-4.4.55.git] / drivers / char / moxa.c

diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 5e3ef5522194d441758c006eb99ff34ef12b1703..01247cccb89f26cbb0d52b7dee3757c36c43db64 100644 (file)
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -301,7 +301,7 @@ static struct tty_operations moxa_ops = {
        .tiocmset = moxa_tiocmset,
 };
 
-static spinlock_t moxa_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(moxa_lock);
 
 #ifdef CONFIG_PCI
 static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
@@ -1649,6 +1649,8 @@ int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
        case MOXA_FIND_BOARD:
        case MOXA_LOAD_C320B:
        case MOXA_LOAD_CODE:
+               if (!capable(CAP_SYS_RAWIO))
+                       return -EPERM;
                break;
        }