proc tty: switch usb-serial to ->proc_fops
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -26,6 +26,7 @@
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#include <linux/tty_flip.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/seq_file.h>
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#include <linux/spinlock.h>
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#include <linux/mutex.h>
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#include <linux/list.h>
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@ -421,57 +422,52 @@ static int serial_break(struct tty_struct *tty, int break_state)
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return 0;
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}
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static int serial_read_proc(char *page, char **start, off_t off, int count,
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int *eof, void *data)
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static int serial_proc_show(struct seq_file *m, void *v)
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{
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struct usb_serial *serial;
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int length = 0;
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int i;
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off_t begin = 0;
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char tmp[40];
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dbg("%s", __func__);
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length += sprintf(page, "usbserinfo:1.0 driver:2.0\n");
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for (i = 0; i < SERIAL_TTY_MINORS && length < PAGE_SIZE; ++i) {
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seq_puts(m, "usbserinfo:1.0 driver:2.0\n");
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for (i = 0; i < SERIAL_TTY_MINORS; ++i) {
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serial = usb_serial_get_by_index(i);
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if (serial == NULL)
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continue;
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length += sprintf(page+length, "%d:", i);
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seq_printf(m, "%d:", i);
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if (serial->type->driver.owner)
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length += sprintf(page+length, " module:%s",
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seq_printf(m, " module:%s",
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module_name(serial->type->driver.owner));
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length += sprintf(page+length, " name:\"%s\"",
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seq_printf(m, " name:\"%s\"",
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serial->type->description);
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length += sprintf(page+length, " vendor:%04x product:%04x",
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seq_printf(m, " vendor:%04x product:%04x",
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le16_to_cpu(serial->dev->descriptor.idVendor),
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le16_to_cpu(serial->dev->descriptor.idProduct));
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length += sprintf(page+length, " num_ports:%d",
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serial->num_ports);
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length += sprintf(page+length, " port:%d",
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i - serial->minor + 1);
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seq_printf(m, " num_ports:%d", serial->num_ports);
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seq_printf(m, " port:%d", i - serial->minor + 1);
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usb_make_path(serial->dev, tmp, sizeof(tmp));
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length += sprintf(page+length, " path:%s", tmp);
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seq_printf(m, " path:%s", tmp);
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length += sprintf(page+length, "\n");
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if ((length + begin) > (off + count)) {
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usb_serial_put(serial);
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goto done;
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}
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if ((length + begin) < off) {
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begin += length;
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length = 0;
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}
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seq_putc(m, '\n');
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usb_serial_put(serial);
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}
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*eof = 1;
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done:
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if (off >= (length + begin))
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return 0;
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*start = page + (off-begin);
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return (count < begin+length-off) ? count : begin+length-off;
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return 0;
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}
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static int serial_proc_open(struct inode *inode, struct file *file)
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{
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return single_open(file, serial_proc_show, NULL);
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}
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static const struct file_operations serial_proc_fops = {
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.owner = THIS_MODULE,
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.open = serial_proc_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static int serial_tiocmget(struct tty_struct *tty, struct file *file)
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{
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struct usb_serial_port *port = tty->driver_data;
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@ -1113,9 +1109,9 @@ static const struct tty_operations serial_ops = {
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.unthrottle = serial_unthrottle,
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.break_ctl = serial_break,
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.chars_in_buffer = serial_chars_in_buffer,
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.read_proc = serial_read_proc,
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.tiocmget = serial_tiocmget,
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.tiocmset = serial_tiocmset,
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.proc_fops = &serial_proc_fops,
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};
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struct tty_driver *usb_serial_tty_driver;
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