diff options
| -rw-r--r-- | drivers/char/synclinkmp.c | 74 |
1 files changed, 34 insertions, 40 deletions
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c index 8eb6c89a980..26de60efe4b 100644 --- a/drivers/char/synclinkmp.c +++ b/drivers/char/synclinkmp.c @@ -50,6 +50,7 @@ #include <linux/ptrace.h> #include <linux/ioport.h> #include <linux/mm.h> +#include <linux/seq_file.h> #include <linux/slab.h> #include <linux/netdevice.h> #include <linux/vmalloc.h> @@ -520,7 +521,6 @@ static void tx_hold(struct tty_struct *tty); static void tx_release(struct tty_struct *tty); static int ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); -static int read_proc(char *page, char **start, off_t off, int count,int *eof, void *data); static int chars_in_buffer(struct tty_struct *tty); static void throttle(struct tty_struct * tty); static void unthrottle(struct tty_struct * tty); @@ -1354,13 +1354,12 @@ static int ioctl(struct tty_struct *tty, struct file *file, * /proc fs routines.... */ -static inline int line_info(char *buf, SLMP_INFO *info) +static inline void line_info(struct seq_file *m, SLMP_INFO *info) { char stat_buf[30]; - int ret; unsigned long flags; - ret = sprintf(buf, "%s: SCABase=%08x Mem=%08X StatusControl=%08x LCR=%08X\n" + seq_printf(m, "%s: SCABase=%08x Mem=%08X StatusControl=%08x LCR=%08X\n" "\tIRQ=%d MaxFrameSize=%u\n", info->device_name, info->phys_sca_base, @@ -1391,75 +1390,70 @@ static inline int line_info(char *buf, SLMP_INFO *info) strcat(stat_buf, "|RI"); if (info->params.mode == MGSL_MODE_HDLC) { - ret += sprintf(buf+ret, "\tHDLC txok:%d rxok:%d", + seq_printf(m, "\tHDLC txok:%d rxok:%d", info->icount.txok, info->icount.rxok); if (info->icount.txunder) - ret += sprintf(buf+ret, " txunder:%d", info->icount.txunder); + seq_printf(m, " txunder:%d", info->icount.txunder); if (info->icount.txabort) - ret += sprintf(buf+ret, " txabort:%d", info->icount.txabort); + seq_printf(m, " txabort:%d", info->icount.txabort); if (info->icount.rxshort) - ret += sprintf(buf+ret, " rxshort:%d", info->icount.rxshort); + seq_printf(m, " rxshort:%d", info->icount.rxshort); if (info->icount.rxlong) - ret += sprintf(buf+ret, " rxlong:%d", info->icount.rxlong); + seq_printf(m, " rxlong:%d", info->icount.rxlong); if (info->icount.rxover) - ret += sprintf(buf+ret, " rxover:%d", info->icount.rxover); + seq_printf(m, " rxover:%d", info->icount.rxover); if (info->icount.rxcrc) - ret += sprintf(buf+ret, " rxlong:%d", info->icount.rxcrc); + seq_printf(m, " rxlong:%d", info->icount.rxcrc); } else { - ret += sprintf(buf+ret, "\tASYNC tx:%d rx:%d", + seq_printf(m, "\tASYNC tx:%d rx:%d", info->icount.tx, info->icount.rx); if (info->icount.frame) - ret += sprintf(buf+ret, " fe:%d", info->icount.frame); + seq_printf(m, " fe:%d", info->icount.frame); if (info->icount.parity) - ret += sprintf(buf+ret, " pe:%d", info->icount.parity); + seq_printf(m, " pe:%d", info->icount.parity); if (info->icount.brk) - ret += sprintf(buf+ret, " brk:%d", info->icount.brk); + seq_printf(m, " brk:%d", info->icount.brk); if (info->icount.overrun) - ret += sprintf(buf+ret, " oe:%d", info->icount.overrun); + seq_printf(m, " oe:%d", info->icount.overrun); } /* Append serial signal status to end */ - ret += sprintf(buf+ret, " %s\n", stat_buf+1); + seq_printf(m, " %s\n", stat_buf+1); - ret += sprintf(buf+ret, "\ttxactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", + seq_printf(m, "\ttxactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", info->tx_active,info->bh_requested,info->bh_running, info->pending_bh); - - return ret; } /* Called to print information about devices */ -static int read_proc(char *page, char **start, off_t off, int count, - int *eof, void *data) +static int synclinkmp_proc_show(struct seq_file *m, void *v) { - int len = 0, l; - off_t begin = 0; SLMP_INFO *info; - len += sprintf(page, "synclinkmp driver:%s\n", driver_version); + seq_printf(m, "synclinkmp driver:%s\n", driver_version); info = synclinkmp_device_list; while( info ) { - l = line_info(page + len, info); - len += l; - if (len+begin > off+count) - goto done; - if (len+begin < off) { - begin += len; - len = 0; - } + line_info(m, info); info = info->next_device; } + return 0; +} - *eof = 1; -done: - if (off >= len+begin) - return 0; - *start = page + (off-begin); - return ((count < begin+len-off) ? count : begin+len-off); +static int synclinkmp_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, synclinkmp_proc_show, NULL); } +static const struct file_operations synclinkmp_proc_fops = { + .owner = THIS_MODULE, + .open = synclinkmp_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + /* Return the count of bytes in transmit buffer */ static int chars_in_buffer(struct tty_struct *tty) @@ -3905,13 +3899,13 @@ static const struct tty_operations ops = { .send_xchar = send_xchar, .break_ctl = set_break, .wait_until_sent = wait_until_sent, - .read_proc = read_proc, .set_termios = set_termios, .stop = tx_hold, .start = tx_release, .hangup = hangup, .tiocmget = tiocmget, .tiocmset = tiocmset, + .proc_fops = &synclinkmp_proc_fops, }; |