diff options
author | Johan Hovold <johan@kernel.org> | 2019-11-07 14:29:02 +0100 |
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committer | Johan Hovold <johan@kernel.org> | 2019-11-12 09:57:20 +0100 |
commit | 7b2faede671adc0a7edbb5f6b1e228aa8b62f7c0 (patch) | |
tree | 403dd7deab563a0d7f89077ee0283ae2abc7551c /drivers/usb/serial | |
parent | 2d52f0763f8ea965d35dc13958b85d0e88e596b2 (diff) | |
download | linux-7b2faede671adc0a7edbb5f6b1e228aa8b62f7c0.tar.bz2 |
USB: serial: mos7840: drop port driver data accessors
Drop the custom port driver data accessors and paranoid sanity checks.
The driver data is not cleared until the driver is unbound.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'drivers/usb/serial')
-rw-r--r-- | drivers/usb/serial/mos7840.c | 104 |
1 files changed, 13 insertions, 91 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 01787685a4ee..11706f2d4145 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -346,26 +346,6 @@ static void mos7840_dump_serial_port(struct usb_serial_port *port, /************************************************************************/ /************************************************************************/ -/* I N T E R F A C E F U N C T I O N S */ -/* I N T E R F A C E F U N C T I O N S */ -/************************************************************************/ -/************************************************************************/ - -static inline void mos7840_set_port_private(struct usb_serial_port *port, - struct moschip_port *data) -{ - usb_set_serial_port_data(port, (void *)data); -} - -static inline struct moschip_port *mos7840_get_port_private(struct - usb_serial_port - *port) -{ - return (struct moschip_port *)usb_get_serial_port_data(port); -} - -/************************************************************************/ -/************************************************************************/ /* U S B C A L L B A C K F U N C T I O N S */ /* U S B C A L L B A C K F U N C T I O N S */ /************************************************************************/ @@ -541,17 +521,13 @@ static void mos7840_bulk_out_data_callback(struct urb *urb) static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) { + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); struct usb_serial *serial = port->serial; int response; int j; struct urb *urb; __u16 Data; int status; - struct moschip_port *mos7840_port; - - mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) - return -ENODEV; usb_clear_halt(serial->dev, port->write_urb->pipe); usb_clear_halt(serial->dev, port->read_urb->pipe); @@ -773,14 +749,10 @@ err: static int mos7840_chars_in_buffer(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int i; int chars = 0; unsigned long flags; - struct moschip_port *mos7840_port; - - mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) - return 0; spin_lock_irqsave(&mos7840_port->pool_lock, flags); for (i = 0; i < NUM_URBS; ++i) { @@ -802,14 +774,10 @@ static int mos7840_chars_in_buffer(struct tty_struct *tty) static void mos7840_close(struct usb_serial_port *port) { - struct moschip_port *mos7840_port; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int j; __u16 Data; - mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) - return; - for (j = 0; j < NUM_URBS; ++j) usb_kill_urb(mos7840_port->write_urb_pool[j]); @@ -840,13 +808,8 @@ static void mos7840_close(struct usb_serial_port *port) static void mos7840_break(struct tty_struct *tty, int break_state) { struct usb_serial_port *port = tty->driver_data; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); unsigned char data; - struct moschip_port *mos7840_port; - - mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return; if (break_state == -1) data = mos7840_port->shadowLCR | LCR_SET_BREAK; @@ -871,14 +834,10 @@ static void mos7840_break(struct tty_struct *tty, int break_state) static int mos7840_write_room(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int i; int room = 0; unsigned long flags; - struct moschip_port *mos7840_port; - - mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) - return -1; spin_lock_irqsave(&mos7840_port->pool_lock, flags); for (i = 0; i < NUM_URBS; ++i) { @@ -904,22 +863,17 @@ static int mos7840_write_room(struct tty_struct *tty) static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *data, int count) { + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); struct usb_serial *serial = port->serial; int status; int i; int bytes_sent = 0; int transfer_size; unsigned long flags; - - struct moschip_port *mos7840_port; struct urb *urb; /* __u16 Data; */ const unsigned char *current_position = data; - mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) - return -1; - /* try to find a free urb in the list */ urb = NULL; @@ -1000,14 +954,9 @@ exit: static void mos7840_throttle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; - struct moschip_port *mos7840_port; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int status; - mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return; - if (!mos7840_port->open) { dev_dbg(&port->dev, "%s", "port not opened\n"); return; @@ -1039,11 +988,8 @@ static void mos7840_throttle(struct tty_struct *tty) static void mos7840_unthrottle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int status; - struct moschip_port *mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return; if (!mos7840_port->open) { dev_dbg(&port->dev, "%s - port not opened\n", __func__); @@ -1071,15 +1017,10 @@ static void mos7840_unthrottle(struct tty_struct *tty) static int mos7840_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; - struct moschip_port *mos7840_port; unsigned int result; __u16 msr; __u16 mcr; int status; - mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return -ENODEV; status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); if (status < 0) @@ -1104,15 +1045,10 @@ static int mos7840_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; - struct moschip_port *mos7840_port; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); unsigned int mcr; int status; - mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return -ENODEV; - /* FIXME: What locks the port registers ? */ mcr = mos7840_port->shadowMCR; if (clear & TIOCM_RTS) @@ -1429,13 +1365,8 @@ static void mos7840_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int status; - struct moschip_port *mos7840_port; - - mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return; if (!mos7840_port->open) { dev_dbg(&port->dev, "%s - port not opened\n", __func__); @@ -1497,7 +1428,7 @@ static int mos7840_get_serial_info(struct tty_struct *tty, struct serial_struct *ss) { struct usb_serial_port *port = tty->driver_data; - struct moschip_port *mos7840_port = mos7840_get_port_private(port); + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); ss->type = PORT_16550A; ss->line = mos7840_port->port->minor; @@ -1520,12 +1451,6 @@ static int mos7840_ioctl(struct tty_struct *tty, { struct usb_serial_port *port = tty->driver_data; void __user *argp = (void __user *)arg; - struct moschip_port *mos7840_port; - - mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return -1; switch (cmd) { /* return number of bytes available */ @@ -1692,7 +1617,6 @@ static int mos7840_port_probe(struct usb_serial_port *port) * common to all port */ mos7840_port->port = port; - mos7840_set_port_private(port, mos7840_port); spin_lock_init(&mos7840_port->pool_lock); /* minor is not initialised until later by @@ -1718,7 +1642,7 @@ static int mos7840_port_probe(struct usb_serial_port *port) mos7840_port->DcrRegOffset = 0x16 + 3 * (phy_num - 2); } mos7840_dump_serial_port(port, mos7840_port); - mos7840_set_port_private(port, mos7840_port); + usb_set_serial_port_data(port, mos7840_port); /* enable rx_disable bit in control register */ status = mos7840_get_reg_sync(port, @@ -1859,9 +1783,7 @@ error: static int mos7840_port_remove(struct usb_serial_port *port) { - struct moschip_port *mos7840_port; - - mos7840_port = mos7840_get_port_private(port); + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); if (mos7840_port->has_led) { /* Turn off LED */ |