staging: dgnc: dgnc_tty.c comment style modifications
Make modifications to comment style Signed-off-by: Walt Feasel <waltfeasel@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Walt Feasel
Greg Kroah-Hartman
parent
7bd43874cc
commit
7127fa28a5
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@ -13,13 +13,9 @@
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* PURPOSE. See the GNU General Public License for more details.
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*/
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/************************************************************************
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*
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/*
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* This file implements the tty driver functionality for the
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* Neo and ClassicBoard PCI based product lines.
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*
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************************************************************************
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*
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*/
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#include <linux/kernel.h>
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@ -42,19 +38,18 @@
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#include "dgnc_sysfs.h"
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#include "dgnc_utils.h"
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/*
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* Default transparent print information.
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*/
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/* Default transparent print information. */
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static const struct digi_t dgnc_digi_init = {
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.digi_flags = DIGI_COOK, /* Flags */
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.digi_maxcps = 100, /* Max CPS */
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.digi_maxchar = 50, /* Max chars in print queue */
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.digi_bufsize = 100, /* Printer buffer size */
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.digi_onlen = 4, /* size of printer on string */
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.digi_offlen = 4, /* size of printer off string */
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.digi_onstr = "\033[5i", /* ANSI printer on string ] */
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.digi_offstr = "\033[4i", /* ANSI printer off string ] */
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.digi_term = "ansi" /* default terminal type */
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.digi_flags = DIGI_COOK, /* Flags */
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.digi_maxcps = 100, /* Max CPS */
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.digi_maxchar = 50, /* Max chars in print queue */
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.digi_bufsize = 100, /* Printer buffer size */
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.digi_onlen = 4, /* size of printer on string */
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.digi_offlen = 4, /* size of printer off string */
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.digi_onstr = "\033[5i", /* ANSI printer on string ] */
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.digi_offstr = "\033[4i", /* ANSI printer off string ] */
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.digi_term = "ansi" /* default terminal type */
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};
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/*
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@ -132,11 +127,7 @@ static const struct tty_operations dgnc_tty_ops = {
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.send_xchar = dgnc_tty_send_xchar
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};
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/************************************************************************
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*
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* TTY Initialization/Cleanup Functions
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*
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************************************************************************/
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/* TTY Initialization/Cleanup Functions */
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/*
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* dgnc_tty_register()
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@ -255,9 +246,7 @@ int dgnc_tty_init(struct dgnc_board *brd)
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if (!brd)
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return -ENXIO;
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/*
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* Initialize board structure elements.
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*/
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/* Initialize board structure elements. */
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vaddr = brd->re_map_membase;
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@ -396,9 +385,9 @@ static void dgnc_wmove(struct channel_t *ch, char *buf, uint n)
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}
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if (n > 0) {
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/*
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* Move rest of data.
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*/
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/* Move rest of data. */
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remain = n;
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memcpy(ch->ch_wqueue + head, buf, remain);
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head += remain;
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@ -468,9 +457,8 @@ void dgnc_input(struct channel_t *ch)
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goto exit_unlock;
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}
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/*
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* If we are throttled, simply don't read any data.
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*/
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/* If we are throttled, simply don't read any data. */
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if (ch->ch_flags & CH_FORCED_STOPI)
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goto exit_unlock;
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@ -583,10 +571,10 @@ exit_unlock:
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tty_ldisc_deref(ld);
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}
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/************************************************************************
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/*
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* Determines when CARRIER changes state and takes appropriate
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* action.
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************************************************************************/
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*/
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void dgnc_carrier(struct channel_t *ch)
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{
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int virt_carrier = 0;
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@ -604,9 +592,8 @@ void dgnc_carrier(struct channel_t *ch)
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if (ch->ch_c_cflag & CLOCAL)
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virt_carrier = 1;
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/*
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* Test for a VIRTUAL carrier transition to HIGH.
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*/
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/* Test for a VIRTUAL carrier transition to HIGH. */
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if (((ch->ch_flags & CH_FCAR) == 0) && (virt_carrier == 1)) {
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/*
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* When carrier rises, wake any threads waiting
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@ -617,9 +604,8 @@ void dgnc_carrier(struct channel_t *ch)
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wake_up_interruptible(&ch->ch_flags_wait);
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}
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/*
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* Test for a PHYSICAL carrier transition to HIGH.
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*/
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/* Test for a PHYSICAL carrier transition to HIGH. */
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if (((ch->ch_flags & CH_CD) == 0) && (phys_carrier == 1)) {
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/*
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* When carrier rises, wake any threads waiting
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@ -663,9 +649,8 @@ void dgnc_carrier(struct channel_t *ch)
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tty_hangup(ch->ch_pun.un_tty);
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}
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/*
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* Make sure that our cached values reflect the current reality.
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*/
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/* Make sure that our cached values reflect the current reality. */
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if (virt_carrier == 1)
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ch->ch_flags |= CH_FCAR;
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else
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@ -677,9 +662,8 @@ void dgnc_carrier(struct channel_t *ch)
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ch->ch_flags &= ~CH_CD;
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}
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/*
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* Assign the custom baud rate to the channel structure
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*/
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/* Assign the custom baud rate to the channel structure */
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static void dgnc_set_custom_speed(struct channel_t *ch, uint newrate)
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{
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int testdiv;
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@ -823,9 +807,8 @@ void dgnc_wakeup_writes(struct channel_t *ch)
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spin_lock_irqsave(&ch->ch_lock, flags);
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/*
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* If channel now has space, wake up anyone waiting on the condition.
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*/
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/* If channel now has space, wake up anyone waiting on the condition. */
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qlen = ch->ch_w_head - ch->ch_w_tail;
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if (qlen < 0)
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qlen += WQUEUESIZE;
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@ -907,16 +890,10 @@ static struct dgnc_board *find_board_by_major(unsigned int major)
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return NULL;
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}
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/************************************************************************
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*
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* TTY Entry points and helper functions
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*
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************************************************************************/
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/* TTY Entry points and helper functions */
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/* dgnc_tty_open() */
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/*
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* dgnc_tty_open()
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*
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*/
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static int dgnc_tty_open(struct tty_struct *tty, struct file *file)
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{
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struct dgnc_board *brd;
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@ -1015,9 +992,8 @@ static int dgnc_tty_open(struct tty_struct *tty, struct file *file)
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/* Store our unit into driver_data, so we always have it available. */
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tty->driver_data = un;
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/*
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* Initialize tty's
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*/
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/* Initialize tty's */
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if (!(un->un_flags & UN_ISOPEN)) {
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/* Store important variables. */
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un->un_tty = tty;
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@ -1054,13 +1030,12 @@ static int dgnc_tty_open(struct tty_struct *tty, struct file *file)
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ch->ch_flags &= ~(CH_OPENING);
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wake_up_interruptible(&ch->ch_flags_wait);
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/*
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* Initialize if neither terminal or printer is open.
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*/
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/* Initialize if neither terminal or printer is open. */
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if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_ISOPEN)) {
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/*
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* Flush input queues.
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*/
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/* Flush input queues. */
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ch->ch_r_head = 0;
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ch->ch_r_tail = 0;
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ch->ch_e_head = 0;
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@ -1096,16 +1071,13 @@ static int dgnc_tty_open(struct tty_struct *tty, struct file *file)
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brd->bd_ops->uart_init(ch);
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}
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/*
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* Run param in case we changed anything
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*/
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/* Run param in case we changed anything */
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brd->bd_ops->param(tty);
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dgnc_carrier(ch);
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/*
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* follow protocol for opening port
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*/
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/* follow protocol for opening port */
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spin_unlock_irqrestore(&ch->ch_lock, flags);
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@ -1206,9 +1178,8 @@ static int dgnc_block_til_ready(struct tty_struct *tty,
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break;
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}
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/*
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* Store the flags before we let go of channel lock
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*/
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/* Store the flags before we let go of channel lock */
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if (sleep_on_un_flags)
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old_flags = ch->ch_tun.un_flags | ch->ch_pun.un_flags;
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else
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@ -1262,10 +1233,8 @@ static void dgnc_tty_hangup(struct tty_struct *tty)
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dgnc_tty_flush_buffer(tty);
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}
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/*
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* dgnc_tty_close()
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*
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*/
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/* dgnc_tty_close() */
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static void dgnc_tty_close(struct tty_struct *tty, struct file *file)
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{
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struct dgnc_board *bd;
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@ -1335,9 +1304,8 @@ static void dgnc_tty_close(struct tty_struct *tty, struct file *file)
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!(ch->ch_digi.digi_flags & DIGI_PRINTER)) {
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ch->ch_flags &= ~(CH_STOPI | CH_FORCED_STOPI);
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/*
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* turn off print device when closing print device.
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*/
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/* turn off print device when closing print device. */
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if ((un->un_type == DGNC_PRINT) && (ch->ch_flags & CH_PRON)) {
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dgnc_wmove(ch, ch->ch_digi.digi_offstr,
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(int)ch->ch_digi.digi_offlen);
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@ -1357,9 +1325,8 @@ static void dgnc_tty_close(struct tty_struct *tty, struct file *file)
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tty->closing = 0;
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/*
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* If we have HUPCL set, lower DTR and RTS
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*/
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/* If we have HUPCL set, lower DTR and RTS */
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if (ch->ch_c_cflag & HUPCL) {
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/* Drop RTS/DTR */
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ch->ch_mostat &= ~(UART_MCR_DTR | UART_MCR_RTS);
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@ -1382,9 +1349,8 @@ static void dgnc_tty_close(struct tty_struct *tty, struct file *file)
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/* Turn off UART interrupts for this port */
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ch->ch_bd->bd_ops->uart_off(ch);
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} else {
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/*
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* turn off print device when closing print device.
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*/
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/* turn off print device when closing print device. */
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if ((un->un_type == DGNC_PRINT) && (ch->ch_flags & CH_PRON)) {
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dgnc_wmove(ch, ch->ch_digi.digi_offstr,
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(int)ch->ch_digi.digi_offlen);
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@ -1556,9 +1522,8 @@ static int dgnc_tty_write_room(struct tty_struct *tty)
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*/
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static int dgnc_tty_put_char(struct tty_struct *tty, unsigned char c)
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{
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/*
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* Simply call tty_write.
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*/
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/* Simply call tty_write. */
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dgnc_tty_write(tty, &c, 1);
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return 1;
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}
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@ -1625,9 +1590,8 @@ static int dgnc_tty_write(struct tty_struct *tty,
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*/
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count = min(count, bufcount);
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/*
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* Bail if no space left.
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*/
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/* Bail if no space left. */
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if (count <= 0)
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goto exit_retry;
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@ -1670,9 +1634,9 @@ static int dgnc_tty_write(struct tty_struct *tty,
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}
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if (n > 0) {
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/*
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* Move rest of data.
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*/
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/* Move rest of data. */
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remain = n;
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memcpy(ch->ch_wqueue + head, buf, remain);
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head += remain;
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@ -1707,9 +1671,7 @@ exit_retry:
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return 0;
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}
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/*
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* Return modem signals to ld.
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*/
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/* Return modem signals to ld. */
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static int dgnc_tty_tiocmget(struct tty_struct *tty)
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{
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@ -1918,9 +1880,8 @@ static void dgnc_tty_send_xchar(struct tty_struct *tty, char c)
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dev_dbg(tty->dev, "dgnc_tty_send_xchar finish\n");
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}
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/*
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* Return modem signals to ld.
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*/
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/* Return modem signals to ld. */
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static inline int dgnc_get_mstat(struct channel_t *ch)
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{
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unsigned char mstat;
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@ -1952,9 +1913,8 @@ static inline int dgnc_get_mstat(struct channel_t *ch)
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return result;
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}
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/*
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* Return modem signals to ld.
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*/
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/* Return modem signals to ld. */
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static int dgnc_get_modem_info(struct channel_t *ch,
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unsigned int __user *value)
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{
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@ -2028,9 +1988,6 @@ static int dgnc_set_modem_info(struct channel_t *ch,
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* dgnc_tty_digigeta()
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*
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* Ioctl to get the information for ditty.
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*
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*
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*
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*/
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static int dgnc_tty_digigeta(struct tty_struct *tty,
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struct digi_t __user *retinfo)
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@ -2070,9 +2027,6 @@ static int dgnc_tty_digigeta(struct tty_struct *tty,
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* dgnc_tty_digiseta()
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*
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* Ioctl to set the information for ditty.
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*
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*
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*
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*/
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static int dgnc_tty_digiseta(struct tty_struct *tty,
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struct digi_t __user *new_info)
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@ -2103,9 +2057,8 @@ static int dgnc_tty_digiseta(struct tty_struct *tty,
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spin_lock_irqsave(&ch->ch_lock, flags);
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/*
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* Handle transistions to and from RTS Toggle.
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*/
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/* Handle transistions to and from RTS Toggle. */
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if (!(ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE) &&
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(new_digi.digi_flags & DIGI_RTS_TOGGLE))
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ch->ch_mostat &= ~(UART_MCR_RTS);
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@ -2113,9 +2066,8 @@ static int dgnc_tty_digiseta(struct tty_struct *tty,
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!(new_digi.digi_flags & DIGI_RTS_TOGGLE))
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ch->ch_mostat |= (UART_MCR_RTS);
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/*
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* Handle transistions to and from DTR Toggle.
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*/
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/* Handle transistions to and from DTR Toggle. */
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if (!(ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE) &&
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(new_digi.digi_flags & DIGI_DTR_TOGGLE))
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ch->ch_mostat &= ~(UART_MCR_DTR);
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@ -2153,9 +2105,8 @@ static int dgnc_tty_digiseta(struct tty_struct *tty,
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return 0;
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}
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/*
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* dgnc_set_termios()
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*/
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/* dgnc_set_termios() */
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static void dgnc_tty_set_termios(struct tty_struct *tty,
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struct ktermios *old_termios)
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{
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@ -2386,11 +2337,7 @@ static void dgnc_tty_flush_buffer(struct tty_struct *tty)
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spin_unlock_irqrestore(&ch->ch_lock, flags);
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}
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/*****************************************************************************
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*
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* The IOCTL function and all of its helpers
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*
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*****************************************************************************/
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/* The IOCTL function and all of its helpers */
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/*
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* dgnc_tty_ioctl()
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|
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@ -2464,7 +2411,8 @@ static int dgnc_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
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return 0;
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case TCSBRKP:
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/* support for POSIX tcsendbreak()
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/*
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* support for POSIX tcsendbreak()
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* According to POSIX.1 spec (7.2.2.1.2) breaks should be
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* between 0.25 and 0.5 seconds so we'll ask for something
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* in the middle: 0.375 seconds.
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|
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@ -2541,9 +2489,7 @@ static int dgnc_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
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spin_unlock_irqrestore(&ch->ch_lock, flags);
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return dgnc_set_modem_info(ch, cmd, uarg);
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/*
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* Here are any additional ioctl's that we want to implement
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*/
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/* Here are any additional ioctl's that we want to implement */
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case TCFLSH:
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/*
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|
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@ -2663,7 +2609,8 @@ static int dgnc_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
|
|||
case DIGI_LOOPBACK:
|
||||
{
|
||||
uint loopback = 0;
|
||||
/* Let go of locks when accessing user space,
|
||||
/*
|
||||
* Let go of locks when accessing user space,
|
||||
* could sleep
|
||||
*/
|
||||
spin_unlock_irqrestore(&ch->ch_lock, flags);
|
||||
|
|
@ -2789,23 +2736,20 @@ static int dgnc_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
|
|||
|
||||
spin_unlock_irqrestore(&ch->ch_lock, flags);
|
||||
|
||||
/*
|
||||
* Get data from user first.
|
||||
*/
|
||||
/* Get data from user first. */
|
||||
|
||||
if (copy_from_user(&buf, uarg, sizeof(buf)))
|
||||
return -EFAULT;
|
||||
|
||||
spin_lock_irqsave(&ch->ch_lock, flags);
|
||||
|
||||
/*
|
||||
* Figure out how much data is in our RX and TX queues.
|
||||
*/
|
||||
/* Figure out how much data is in our RX and TX queues. */
|
||||
|
||||
buf.rxbuf = (ch->ch_r_head - ch->ch_r_tail) & RQUEUEMASK;
|
||||
buf.txbuf = (ch->ch_w_head - ch->ch_w_tail) & WQUEUEMASK;
|
||||
|
||||
/*
|
||||
* Is the UART empty? Add that value to whats in our TX queue.
|
||||
*/
|
||||
/* Is the UART empty? Add that value to whats in our TX queue. */
|
||||
|
||||
count = buf.txbuf + ch_bd_ops->get_uart_bytes_left(ch);
|
||||
|
||||
/*
|
||||
|
|
@ -2825,9 +2769,8 @@ static int dgnc_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
|
|||
if (buf.txbuf > tdist)
|
||||
buf.txbuf = tdist;
|
||||
|
||||
/*
|
||||
* Report whether our queue and UART TX are completely empty.
|
||||
*/
|
||||
/* Report whether our queue and UART TX are completely empty. */
|
||||
|
||||
if (count)
|
||||
buf.txdone = 0;
|
||||
else
|
||||
|
|
|
|||
Loading…
Reference in New Issue