Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763787AbYFTU2E (ORCPT ); Fri, 20 Jun 2008 16:28:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760673AbYFTUUK (ORCPT ); Fri, 20 Jun 2008 16:20:10 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:35199 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754263AbYFTUUG (ORCPT ); Fri, 20 Jun 2008 16:20:06 -0400 From: Alan Cox Subject: [PATCH 35/70] empeg: Coding style To: linux-kernel@vger.kernel.org Date: Fri, 20 Jun 2008 21:02:41 +0100 Message-ID: <20080620200238.1479.92380.stgit@localhost.localdomain> In-Reply-To: <20080620195406.1479.12620.stgit@localhost.localdomain> References: <20080620195406.1479.12620.stgit@localhost.localdomain> User-Agent: StGIT/0.14.1 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 15862 Lines: 478 From: Alan Cox Signed-off-by: Alan Cox --- drivers/usb/serial/empeg.c | 203 +++++++++++++++++++++++--------------------- 1 files changed, 107 insertions(+), 96 deletions(-) diff --git a/drivers/usb/serial/empeg.c b/drivers/usb/serial/empeg.c index 47ebdf5..a6ab5b5 100644 --- a/drivers/usb/serial/empeg.c +++ b/drivers/usb/serial/empeg.c @@ -11,36 +11,39 @@ * it under the terms of the GNU General Public License, as published by * the Free Software Foundation, version 2. * - * See Documentation/usb/usb-serial.txt for more information on using this driver - * + * See Documentation/usb/usb-serial.txt for more information on using this + * driver + * * (07/16/2001) gb - * remove unused code in empeg_close() (thanks to Oliver Neukum for pointing this - * out) and rewrote empeg_set_termios(). - * + * remove unused code in empeg_close() (thanks to Oliver Neukum for + * pointing this out) and rewrote empeg_set_termios(). + * * (05/30/2001) gkh - * switched from using spinlock to a semaphore, which fixes lots of problems. + * switched from using spinlock to a semaphore, which fixes lots of + * problems. * * (04/08/2001) gb * Identify version on module load. - * + * * (01/22/2001) gb - * Added write_room() and chars_in_buffer() support. - * + * Added write_room() and chars_in_buffer() support. + * * (12/21/2000) gb * Moved termio stuff inside the port->active check. * Moved MOD_DEC_USE_COUNT to end of empeg_close(). - * + * * (12/03/2000) gb - * Added port->port.tty->ldisc.set_termios(port->port.tty, NULL) to empeg_open() - * This notifies the tty driver that the termios have changed. - * + * Added port->port.tty->ldisc.set_termios(port->port.tty, NULL) to + * empeg_open(). This notifies the tty driver that the termios have + * changed. + * * (11/13/2000) gb - * Moved tty->low_latency = 1 from empeg_read_bulk_callback() to empeg_open() - * (It only needs to be set once - Doh!) - * + * Moved tty->low_latency = 1 from empeg_read_bulk_callback() to + * empeg_open() (It only needs to be set once - Doh!) + * * (11/11/2000) gb * Updated to work with id_table structure. - * + * * (11/04/2000) gb * Forked this from visor.c, and hacked it up to work with an * Empeg ltd. empeg-car player. Constructive criticism welcomed. @@ -48,7 +51,7 @@ * use of his code, and for his guidance, advice and patience. :) * A 'Thank You' is in order for John Ripley of Empeg ltd for his * advice, and patience too. - * + * */ #include @@ -60,7 +63,7 @@ #include #include #include -#include +#include #include #include @@ -77,27 +80,30 @@ static int debug; #define EMPEG_PRODUCT_ID 0x0001 /* function prototypes for an empeg-car player */ -static int empeg_open (struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static void empeg_close (struct tty_struct *tty, struct usb_serial_port *port, struct file *filp); -static int empeg_write (struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, - int count); -static int empeg_write_room (struct tty_struct *tty); -static int empeg_chars_in_buffer (struct tty_struct *tty); -static void empeg_throttle (struct tty_struct *tty); -static void empeg_unthrottle (struct tty_struct *tty); -static int empeg_startup (struct usb_serial *serial); -static void empeg_shutdown (struct usb_serial *serial); -static void empeg_set_termios (struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios); -static void empeg_write_bulk_callback (struct urb *urb); -static void empeg_read_bulk_callback (struct urb *urb); +static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port, + struct file *filp); +static void empeg_close(struct tty_struct *tty, struct usb_serial_port *port, + struct file *filp); +static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, + const unsigned char *buf, + int count); +static int empeg_write_room(struct tty_struct *tty); +static int empeg_chars_in_buffer(struct tty_struct *tty); +static void empeg_throttle(struct tty_struct *tty); +static void empeg_unthrottle(struct tty_struct *tty); +static int empeg_startup(struct usb_serial *serial); +static void empeg_shutdown(struct usb_serial *serial); +static void empeg_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old_termios); +static void empeg_write_bulk_callback(struct urb *urb); +static void empeg_read_bulk_callback(struct urb *urb); static struct usb_device_id id_table [] = { { USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) }, { } /* Terminating entry */ }; -MODULE_DEVICE_TABLE (usb, id_table); +MODULE_DEVICE_TABLE(usb, id_table); static struct usb_driver empeg_driver = { .name = "empeg", @@ -149,7 +155,7 @@ static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port, dbg("%s - port %d", __func__, port->number); /* Force default termio settings */ - empeg_set_termios (tty, port, NULL) ; + empeg_set_termios(tty, port, NULL) ; bytes_in = 0; bytes_out = 0; @@ -157,7 +163,7 @@ static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port, /* Start reading from the device */ usb_fill_bulk_urb( port->read_urb, - serial->dev, + serial->dev, usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), port->read_urb->transfer_buffer, @@ -168,14 +174,16 @@ static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port, result = usb_submit_urb(port->read_urb, GFP_KERNEL); if (result) - dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __func__, result); + dev_err(&port->dev, + "%s - failed submitting read urb, error %d\n", + __func__, result); return result; } static void empeg_close(struct tty_struct *tty, struct usb_serial_port *port, - struct file * filp) + struct file *filp) { dbg("%s - port %d", __func__, port->number); @@ -186,7 +194,8 @@ static void empeg_close(struct tty_struct *tty, struct usb_serial_port *port, } -static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) +static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, + const unsigned char *buf, int count) { struct usb_serial *serial = port->serial; struct urb *urb; @@ -203,7 +212,7 @@ static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, con /* try to find a free urb in our list of them */ urb = NULL; - spin_lock_irqsave (&write_urb_pool_lock, flags); + spin_lock_irqsave(&write_urb_pool_lock, flags); for (i = 0; i < NUM_URBS; ++i) { if (write_urb_pool[i]->status != -EINPROGRESS) { @@ -212,7 +221,7 @@ static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, con } } - spin_unlock_irqrestore (&write_urb_pool_lock, flags); + spin_unlock_irqrestore(&write_urb_pool_lock, flags); if (urb == NULL) { dbg("%s - no more free urbs", __func__); @@ -220,25 +229,27 @@ static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, con } if (urb->transfer_buffer == NULL) { - urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_ATOMIC); + urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_ATOMIC); if (urb->transfer_buffer == NULL) { - dev_err(&port->dev, "%s no more kernel memory...\n", __func__); + dev_err(&port->dev, + "%s no more kernel memory...\n", + __func__); goto exit; } } - transfer_size = min (count, URB_TRANSFER_BUFFER_SIZE); + transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); - memcpy (urb->transfer_buffer, current_position, transfer_size); + memcpy(urb->transfer_buffer, current_position, transfer_size); usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, urb->transfer_buffer); /* build up our urb */ - usb_fill_bulk_urb ( + usb_fill_bulk_urb( urb, serial->dev, usb_sndbulkpipe(serial->dev, - port->bulk_out_endpointAddress), + port->bulk_out_endpointAddress), urb->transfer_buffer, transfer_size, empeg_write_bulk_callback, @@ -260,7 +271,7 @@ static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, con } exit: return bytes_sent; -} +} static int empeg_write_room(struct tty_struct *tty) @@ -272,14 +283,13 @@ static int empeg_write_room(struct tty_struct *tty) dbg("%s - port %d", __func__, port->number); - spin_lock_irqsave (&write_urb_pool_lock, flags); + spin_lock_irqsave(&write_urb_pool_lock, flags); /* tally up the number of bytes available */ for (i = 0; i < NUM_URBS; ++i) { - if (write_urb_pool[i]->status != -EINPROGRESS) { + if (write_urb_pool[i]->status != -EINPROGRESS) room += URB_TRANSFER_BUFFER_SIZE; - } - } - spin_unlock_irqrestore (&write_urb_pool_lock, flags); + } + spin_unlock_irqrestore(&write_urb_pool_lock, flags); dbg("%s - returns %d", __func__, room); return room; @@ -295,25 +305,21 @@ static int empeg_chars_in_buffer(struct tty_struct *tty) dbg("%s - port %d", __func__, port->number); - spin_lock_irqsave (&write_urb_pool_lock, flags); + spin_lock_irqsave(&write_urb_pool_lock, flags); /* tally up the number of bytes waiting */ for (i = 0; i < NUM_URBS; ++i) { - if (write_urb_pool[i]->status == -EINPROGRESS) { + if (write_urb_pool[i]->status == -EINPROGRESS) chars += URB_TRANSFER_BUFFER_SIZE; - } } - spin_unlock_irqrestore (&write_urb_pool_lock, flags); - + spin_unlock_irqrestore(&write_urb_pool_lock, flags); dbg("%s - returns %d", __func__, chars); - - return (chars); - + return chars; } -static void empeg_write_bulk_callback (struct urb *urb) +static void empeg_write_bulk_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; int status = urb->status; @@ -330,7 +336,7 @@ static void empeg_write_bulk_callback (struct urb *urb) } -static void empeg_read_bulk_callback (struct urb *urb) +static void empeg_read_bulk_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; struct tty_struct *tty; @@ -346,8 +352,8 @@ static void empeg_read_bulk_callback (struct urb *urb) return; } - usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); - + usb_serial_debug_data(debug, &port->dev, __func__, + urb->actual_length, data); tty = port->port.tty; if (urb->actual_length) { @@ -360,7 +366,7 @@ static void empeg_read_bulk_callback (struct urb *urb) /* Continue trying to always read */ usb_fill_bulk_urb( port->read_urb, - port->serial->dev, + port->serial->dev, usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress), port->read_urb->transfer_buffer, @@ -371,7 +377,9 @@ static void empeg_read_bulk_callback (struct urb *urb) result = usb_submit_urb(port->read_urb, GFP_ATOMIC); if (result) - dev_err(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", __func__, result); + dev_err(&urb->dev->dev, + "%s - failed resubmitting read urb, error %d\n", + __func__, result); return; @@ -395,11 +403,13 @@ static void empeg_unthrottle(struct tty_struct *tty) port->read_urb->dev = port->serial->dev; result = usb_submit_urb(port->read_urb, GFP_ATOMIC); if (result) - dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __func__, result); + dev_err(&port->dev, + "%s - failed submitting read urb, error %d\n", + __func__, result); } -static int empeg_startup (struct usb_serial *serial) +static int empeg_startup(struct usb_serial *serial) { int r; @@ -411,7 +421,7 @@ static int empeg_startup (struct usb_serial *serial) return -ENODEV; } dbg("%s - reset config", __func__); - r = usb_reset_configuration (serial->dev); + r = usb_reset_configuration(serial->dev); /* continue on with initialization */ return r; @@ -419,9 +429,9 @@ static int empeg_startup (struct usb_serial *serial) } -static void empeg_shutdown (struct usb_serial *serial) +static void empeg_shutdown(struct usb_serial *serial) { - dbg ("%s", __func__); + dbg("%s", __func__); } @@ -432,14 +442,14 @@ static void empeg_set_termios(struct tty_struct *tty, dbg("%s - port %d", __func__, port->number); /* - * The empeg-car player wants these particular tty settings. - * You could, for example, change the baud rate, however the - * player only supports 115200 (currently), so there is really - * no point in support for changes to the tty settings. - * (at least for now) - * - * The default requirements for this device are: - */ + * The empeg-car player wants these particular tty settings. + * You could, for example, change the baud rate, however the + * player only supports 115200 (currently), so there is really + * no point in support for changes to the tty settings. + * (at least for now) + * + * The default requirements for this device are: + */ termios->c_iflag &= ~(IGNBRK /* disable ignore break */ | BRKINT /* disable break causes interrupt */ @@ -478,13 +488,13 @@ static void empeg_set_termios(struct tty_struct *tty, } -static int __init empeg_init (void) +static int __init empeg_init(void) { struct urb *urb; int i, retval; - /* create our write urb pool and transfer buffers */ - spin_lock_init (&write_urb_pool_lock); + /* create our write urb pool and transfer buffers */ + spin_lock_init(&write_urb_pool_lock); for (i = 0; i < NUM_URBS; ++i) { urb = usb_alloc_urb(0, GFP_KERNEL); write_urb_pool[i] = urb; @@ -493,9 +503,10 @@ static int __init empeg_init (void) continue; } - urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); + urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, + GFP_KERNEL); if (!urb->transfer_buffer) { - err("%s - out of memory for urb buffers.", + err("%s - out of memory for urb buffers.", __func__); continue; } @@ -524,36 +535,36 @@ failed_usb_serial_register: } -static void __exit empeg_exit (void) +static void __exit empeg_exit(void) { int i; unsigned long flags; usb_deregister(&empeg_driver); - usb_serial_deregister (&empeg_device); + usb_serial_deregister(&empeg_device); - spin_lock_irqsave (&write_urb_pool_lock, flags); + spin_lock_irqsave(&write_urb_pool_lock, flags); for (i = 0; i < NUM_URBS; ++i) { if (write_urb_pool[i]) { - /* FIXME - uncomment the following usb_kill_urb call when - * the host controllers get fixed to set urb->dev = NULL after - * the urb is finished. Otherwise this call oopses. */ + /* FIXME - uncomment the following usb_kill_urb call + * when the host controllers get fixed to set urb->dev + * = NULL after the urb is finished. Otherwise this + * call oopses. */ /* usb_kill_urb(write_urb_pool[i]); */ kfree(write_urb_pool[i]->transfer_buffer); - usb_free_urb (write_urb_pool[i]); + usb_free_urb(write_urb_pool[i]); } } - - spin_unlock_irqrestore (&write_urb_pool_lock, flags); + spin_unlock_irqrestore(&write_urb_pool_lock, flags); } module_init(empeg_init); module_exit(empeg_exit); -MODULE_AUTHOR( DRIVER_AUTHOR ); -MODULE_DESCRIPTION( DRIVER_DESC ); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); module_param(debug, bool, S_IRUGO | S_IWUSR); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/