diff options
Diffstat (limited to 'net/nfc/nci/uart.c')
| -rw-r--r-- | net/nfc/nci/uart.c | 31 |
1 files changed, 12 insertions, 19 deletions
diff --git a/net/nfc/nci/uart.c b/net/nfc/nci/uart.c index cc8fa9e36159..aab107727f18 100644 --- a/net/nfc/nci/uart.c +++ b/net/nfc/nci/uart.c @@ -119,22 +119,22 @@ static int nci_uart_set_driver(struct tty_struct *tty, unsigned int driver) memcpy(nu, nci_uart_drivers[driver], sizeof(struct nci_uart)); nu->tty = tty; - tty->disc_data = nu; skb_queue_head_init(&nu->tx_q); INIT_WORK(&nu->write_work, nci_uart_write_work); spin_lock_init(&nu->rx_lock); ret = nu->ops.open(nu); if (ret) { - tty->disc_data = NULL; kfree(nu); + return ret; } else if (!try_module_get(nu->owner)) { nu->ops.close(nu); - tty->disc_data = NULL; kfree(nu); return -ENOENT; } - return ret; + tty->disc_data = nu; + + return 0; } /* ------ LDISC part ------ */ @@ -172,7 +172,7 @@ static int nci_uart_tty_open(struct tty_struct *tty) */ static void nci_uart_tty_close(struct tty_struct *tty) { - struct nci_uart *nu = (void *)tty->disc_data; + struct nci_uart *nu = tty->disc_data; /* Detach from the tty */ tty->disc_data = NULL; @@ -204,7 +204,7 @@ static void nci_uart_tty_close(struct tty_struct *tty) */ static void nci_uart_tty_wakeup(struct tty_struct *tty) { - struct nci_uart *nu = (void *)tty->disc_data; + struct nci_uart *nu = tty->disc_data; if (!nu) return; @@ -296,9 +296,9 @@ static int nci_uart_default_recv_buf(struct nci_uart *nu, const u8 *data, * Return Value: None */ static void nci_uart_tty_receive(struct tty_struct *tty, const u8 *data, - const char *flags, int count) + const u8 *flags, size_t count) { - struct nci_uart *nu = (void *)tty->disc_data; + struct nci_uart *nu = tty->disc_data; if (!nu || tty != nu->tty) return; @@ -325,7 +325,7 @@ static void nci_uart_tty_receive(struct tty_struct *tty, const u8 *data, static int nci_uart_tty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { - struct nci_uart *nu = (void *)tty->disc_data; + struct nci_uart *nu = tty->disc_data; int err = 0; switch (cmd) { @@ -345,20 +345,14 @@ static int nci_uart_tty_ioctl(struct tty_struct *tty, unsigned int cmd, /* We don't provide read/write/poll interface for user space. */ static ssize_t nci_uart_tty_read(struct tty_struct *tty, struct file *file, - unsigned char *buf, size_t nr, - void **cookie, unsigned long offset) + u8 *buf, size_t nr, void **cookie, + unsigned long offset) { return 0; } static ssize_t nci_uart_tty_write(struct tty_struct *tty, struct file *file, - const unsigned char *data, size_t count) -{ - return 0; -} - -static __poll_t nci_uart_tty_poll(struct tty_struct *tty, - struct file *filp, poll_table *wait) + const u8 *data, size_t count) { return 0; } @@ -435,7 +429,6 @@ static struct tty_ldisc_ops nci_uart_ldisc = { .close = nci_uart_tty_close, .read = nci_uart_tty_read, .write = nci_uart_tty_write, - .poll = nci_uart_tty_poll, .receive_buf = nci_uart_tty_receive, .write_wakeup = nci_uart_tty_wakeup, .ioctl = nci_uart_tty_ioctl, |