diff options
| -rw-r--r-- | arch/ia64/hp/sim/simserial.c | 49 |
1 files changed, 24 insertions, 25 deletions
diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c index 24b1ad5334c..2bef5261d96 100644 --- a/arch/ia64/hp/sim/simserial.c +++ b/arch/ia64/hp/sim/simserial.c @@ -24,6 +24,7 @@ #include <linux/major.h> #include <linux/fcntl.h> #include <linux/mm.h> +#include <linux/seq_file.h> #include <linux/slab.h> #include <linux/capability.h> #include <linux/console.h> @@ -848,38 +849,36 @@ static int rs_open(struct tty_struct *tty, struct file * filp) * /proc fs routines.... */ -static inline int line_info(char *buf, struct serial_state *state) +static inline void line_info(struct seq_file *m, struct serial_state *state) { - return sprintf(buf, "%d: uart:%s port:%lX irq:%d\n", + seq_printf(m, "%d: uart:%s port:%lX irq:%d\n", state->line, uart_config[state->type].name, state->port, state->irq); } -static int rs_read_proc(char *page, char **start, off_t off, int count, - int *eof, void *data) +static int rs_proc_show(struct seq_file *m, void *v) { - int i, len = 0, l; - off_t begin = 0; - - len += sprintf(page, "simserinfo:1.0 driver:%s\n", serial_version); - for (i = 0; i < NR_PORTS && len < 4000; i++) { - l = line_info(page + len, &rs_table[i]); - len += l; - if (len+begin > off+count) - goto done; - if (len+begin < off) { - begin += len; - len = 0; - } - } - *eof = 1; -done: - if (off >= len+begin) - return 0; - *start = page + (begin-off); - return ((count < begin+len-off) ? count : begin+len-off); + int i; + + seq_printf(m, "simserinfo:1.0 driver:%s\n", serial_version); + for (i = 0; i < NR_PORTS; i++) + line_info(m, &rs_table[i]); + return 0; } +static int rs_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, rs_proc_show, NULL); +} + +static const struct file_operations rs_proc_fops = { + .owner = THIS_MODULE, + .open = rs_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + /* * --------------------------------------------------------------------- * rs_init() and friends @@ -917,7 +916,7 @@ static const struct tty_operations hp_ops = { .start = rs_start, .hangup = rs_hangup, .wait_until_sent = rs_wait_until_sent, - .read_proc = rs_read_proc, + .proc_fops = &rs_proc_fops, }; /* |