proc tty: switch serial_core 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>
This commit is contained in:
Alexey Dobriyan
Linus Torvalds
parent
201a50ba66
commit
d196a949ba
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@ -27,6 +27,8 @@
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/console.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/serial_core.h>
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#include <linux/smp_lock.h>
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#include <linux/device.h>
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@ -1682,20 +1684,20 @@ static const char *uart_type(struct uart_port *port)
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#ifdef CONFIG_PROC_FS
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static int uart_line_info(char *buf, struct uart_driver *drv, int i)
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static void uart_line_info(struct seq_file *m, struct uart_driver *drv, int i)
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{
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struct uart_state *state = drv->state + i;
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int pm_state;
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struct uart_port *port = state->port;
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char stat_buf[32];
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unsigned int status;
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int mmio, ret;
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int mmio;
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if (!port)
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return 0;
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return;
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mmio = port->iotype >= UPIO_MEM;
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ret = sprintf(buf, "%d: uart:%s %s%08llX irq:%d",
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seq_printf(m, "%d: uart:%s %s%08llX irq:%d",
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port->line, uart_type(port),
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mmio ? "mmio:0x" : "port:",
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mmio ? (unsigned long long)port->mapbase
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@ -1703,8 +1705,8 @@ static int uart_line_info(char *buf, struct uart_driver *drv, int i)
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port->irq);
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if (port->type == PORT_UNKNOWN) {
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strcat(buf, "\n");
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return ret + 1;
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seq_putc(m, '\n');
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return;
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}
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if (capable(CAP_SYS_ADMIN)) {
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@ -1719,19 +1721,19 @@ static int uart_line_info(char *buf, struct uart_driver *drv, int i)
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uart_change_pm(state, pm_state);
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mutex_unlock(&state->mutex);
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ret += sprintf(buf + ret, " tx:%d rx:%d",
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seq_printf(m, " tx:%d rx:%d",
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port->icount.tx, port->icount.rx);
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if (port->icount.frame)
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ret += sprintf(buf + ret, " fe:%d",
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seq_printf(m, " fe:%d",
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port->icount.frame);
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if (port->icount.parity)
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ret += sprintf(buf + ret, " pe:%d",
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seq_printf(m, " pe:%d",
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port->icount.parity);
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if (port->icount.brk)
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ret += sprintf(buf + ret, " brk:%d",
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seq_printf(m, " brk:%d",
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port->icount.brk);
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if (port->icount.overrun)
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ret += sprintf(buf + ret, " oe:%d",
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seq_printf(m, " oe:%d",
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port->icount.overrun);
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#define INFOBIT(bit, str) \
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@ -1753,45 +1755,39 @@ static int uart_line_info(char *buf, struct uart_driver *drv, int i)
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STATBIT(TIOCM_RNG, "|RI");
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if (stat_buf[0])
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stat_buf[0] = ' ';
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strcat(stat_buf, "\n");
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ret += sprintf(buf + ret, stat_buf);
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} else {
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strcat(buf, "\n");
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ret++;
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seq_puts(m, stat_buf);
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}
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seq_putc(m, '\n');
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#undef STATBIT
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#undef INFOBIT
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return ret;
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}
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static int uart_read_proc(char *page, char **start, off_t off,
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int count, int *eof, void *data)
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static int uart_proc_show(struct seq_file *m, void *v)
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{
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struct tty_driver *ttydrv = data;
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struct tty_driver *ttydrv = v;
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struct uart_driver *drv = ttydrv->driver_state;
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int i, len = 0, l;
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off_t begin = 0;
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int i;
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len += sprintf(page, "serinfo:1.0 driver%s%s revision:%s\n",
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seq_printf(m, "serinfo:1.0 driver%s%s revision:%s\n",
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"", "", "");
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for (i = 0; i < drv->nr && len < PAGE_SIZE - 96; i++) {
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l = uart_line_info(page + len, drv, i);
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len += l;
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if (len + begin > off + count)
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goto done;
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if (len + begin < off) {
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begin += len;
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len = 0;
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}
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}
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*eof = 1;
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done:
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if (off >= len + begin)
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return 0;
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*start = page + (off - begin);
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return (count < begin + len - off) ? count : (begin + len - off);
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for (i = 0; i < drv->nr; i++)
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uart_line_info(m, drv, i);
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return 0;
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}
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static int uart_proc_open(struct inode *inode, struct file *file)
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{
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return single_open(file, uart_proc_show, PDE(inode)->data);
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}
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static const struct file_operations uart_proc_fops = {
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.owner = THIS_MODULE,
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.open = uart_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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#endif
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#if defined(CONFIG_SERIAL_CORE_CONSOLE) || defined(CONFIG_CONSOLE_POLL)
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@ -2299,7 +2295,7 @@ static const struct tty_operations uart_ops = {
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.break_ctl = uart_break_ctl,
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.wait_until_sent= uart_wait_until_sent,
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#ifdef CONFIG_PROC_FS
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.read_proc = uart_read_proc,
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.proc_fops = &uart_proc_fops,
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#endif
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.tiocmget = uart_tiocmget,
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.tiocmset = uart_tiocmset,
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