CRISv10: fix serial driver proc-usage

drivers/serial/crisv10.c:4428: error: unknown field 'read_proc' specified in initializer

Commit 0f043a81ebe84be3576667f04fdda481609e3816 ("proc tty: remove struct
tty_operations::read_proc") removes the read_proc entry from struct
tty_operations.

Rework the proc handling in the CRISv10 serial driver to use proc_fops
instead.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Mikael Starvik <starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 78 insertions, 95 deletions

diff --git a/drivers/serial/crisv10.c b/drivers/serial/crisv10.c
index 7ba7d70f04d6..7be52fe288eb 100644
--- a/drivers/serial/crisv10.c
+++ b/drivers/serial/crisv10.c
@@ -23,16 +23,18 @@ static char *serial_version = "$Revision: 1.25 $";
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/init.h>
-#include <asm/uaccess.h>
 #include <linux/kernel.h>
 #include <linux/mutex.h>
 #include <linux/bitops.h>
+#include <linux/seq_file.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
 
-#include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/dma.h>
 #include <asm/system.h>
-#include <linux/delay.h>
 
 #include <arch/svinto.h>
 
@@ -456,7 +458,6 @@ static struct e100_serial rs_table[] = {
 
 #define NR_PORTS (sizeof(rs_table)/sizeof(struct e100_serial))
 
-static struct ktermios *serial_termios[NR_PORTS];
 #ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER
 static struct fast_timer fast_timers[NR_PORTS];
 #endif
@@ -4257,151 +4258,132 @@ rs_open(struct tty_struct *tty, struct file * filp)
         return 0;
 }
 
+#ifdef CONFIG_PROC_FS
 /*
  * /proc fs routines....
  */
 
-static int line_info(char *buf, struct e100_serial *info)
+static void seq_line_info(struct seq_file *m, struct e100_serial *info)
 {
-        char    stat_buf[30];
-        int     ret;
         unsigned long tmp;
 
-        ret = sprintf(buf, "%d: uart:E100 port:%lX irq:%d",
-                      info->line, (unsigned long)info->ioport, info->irq);
+        seq_printf(m, "%d: uart:E100 port:%lX irq:%d",
+                   info->line, (unsigned long)info->ioport, info->irq);
 
         if (!info->ioport || (info->type == PORT_UNKNOWN)) {
-                ret += sprintf(buf+ret, "\n");
-                return ret;
+                seq_printf(m, "\n");
+                return;
         }
 
-        stat_buf[0] = 0;
-        stat_buf[1] = 0;
-        if (!E100_RTS_GET(info))
-                strcat(stat_buf, "|RTS");
-        if (!E100_CTS_GET(info))
-                strcat(stat_buf, "|CTS");
-        if (!E100_DTR_GET(info))
-                strcat(stat_buf, "|DTR");
-        if (!E100_DSR_GET(info))
-                strcat(stat_buf, "|DSR");
-        if (!E100_CD_GET(info))
-                strcat(stat_buf, "|CD");
-        if (!E100_RI_GET(info))
-                strcat(stat_buf, "|RI");
-
-        ret += sprintf(buf+ret, " baud:%d", info->baud);
-
-        ret += sprintf(buf+ret, " tx:%lu rx:%lu",
+        seq_printf(m, " baud:%d", info->baud);
+        seq_printf(m, " tx:%lu rx:%lu",
                        (unsigned long)info->icount.tx,
                        (unsigned long)info->icount.rx);
         tmp = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-        if (tmp) {
-                ret += sprintf(buf+ret, " tx_pend:%lu/%lu",
-                               (unsigned long)tmp,
-                               (unsigned long)SERIAL_XMIT_SIZE);
-        }
+        if (tmp)
+                seq_printf(m, " tx_pend:%lu/%lu",
+                           (unsigned long)tmp,
+                           (unsigned long)SERIAL_XMIT_SIZE);
 
-        ret += sprintf(buf+ret, " rx_pend:%lu/%lu",
-                       (unsigned long)info->recv_cnt,
-                       (unsigned long)info->max_recv_cnt);
+        seq_printf(m, " rx_pend:%lu/%lu",
+                   (unsigned long)info->recv_cnt,
+                   (unsigned long)info->max_recv_cnt);
 
 #if 1
         if (info->port.tty) {
-
                 if (info->port.tty->stopped)
-                        ret += sprintf(buf+ret, " stopped:%i",
-                                       (int)info->port.tty->stopped);
+                        seq_printf(m, " stopped:%i",
+                                   (int)info->port.tty->stopped);
                 if (info->port.tty->hw_stopped)
-                        ret += sprintf(buf+ret, " hw_stopped:%i",
-                                       (int)info->port.tty->hw_stopped);
+                        seq_printf(m, " hw_stopped:%i",
+                                   (int)info->port.tty->hw_stopped);
         }
 
         {
                 unsigned char rstat = info->ioport[REG_STATUS];
-                if (rstat & IO_MASK(R_SERIAL0_STATUS, xoff_detect) )
-                        ret += sprintf(buf+ret, " xoff_detect:1");
+                if (rstat & IO_MASK(R_SERIAL0_STATUS, xoff_detect))
+                        seq_printf(m, " xoff_detect:1");
         }
 
 #endif
 
-
-
-
         if (info->icount.frame)
-                ret += sprintf(buf+ret, " fe:%lu",
-                               (unsigned long)info->icount.frame);
+                seq_printf(m, " fe:%lu", (unsigned long)info->icount.frame);
 
         if (info->icount.parity)
-                ret += sprintf(buf+ret, " pe:%lu",
-                               (unsigned long)info->icount.parity);
+                seq_printf(m, " pe:%lu", (unsigned long)info->icount.parity);
 
         if (info->icount.brk)
-                ret += sprintf(buf+ret, " brk:%lu",
-                               (unsigned long)info->icount.brk);
+                seq_printf(m, " brk:%lu", (unsigned long)info->icount.brk);
 
         if (info->icount.overrun)
-                ret += sprintf(buf+ret, " oe:%lu",
-                               (unsigned long)info->icount.overrun);
+                seq_printf(m, " oe:%lu", (unsigned long)info->icount.overrun);
 
         /*
          * Last thing is the RS-232 status lines
          */
-        ret += sprintf(buf+ret, " %s\n", stat_buf+1);
-        return ret;
+        if (!E100_RTS_GET(info))
+                seq_puts(m, "|RTS");
+        if (!E100_CTS_GET(info))
+                seq_puts(m, "|CTS");
+        if (!E100_DTR_GET(info))
+                seq_puts(m, "|DTR");
+        if (!E100_DSR_GET(info))
+                seq_puts(m, "|DSR");
+        if (!E100_CD_GET(info))
+                seq_puts(m, "|CD");
+        if (!E100_RI_GET(info))
+                seq_puts(m, "|RI");
+        seq_puts(m, "\n");
 }
 
-int rs_read_proc(char *page, char **start, off_t off, int count,
-                 int *eof, void *data)
+
+static int crisv10_proc_show(struct seq_file *m, void *v)
 {
-        int i, len = 0, l;
-        off_t   begin = 0;
+        int i;
 
-        len += sprintf(page, "serinfo:1.0 driver:%s\n",
-                       serial_version);
-        for (i = 0; i < NR_PORTS && len < 4000; i++) {
+        seq_printf(m, "serinfo:1.0 driver:%s\n", serial_version);
+
+        for (i = 0; i < NR_PORTS; i++) {
                 if (!rs_table[i].enabled)
                         continue;
-                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;
-                }
+                seq_line_info(m, &rs_table[i]);
         }
 #ifdef DEBUG_LOG_INCLUDED
         for (i = 0; i < debug_log_pos; i++) {
-                len += sprintf(page + len, "%-4i %lu.%lu ", i, debug_log[i].time, timer_data_to_ns(debug_log[i].timer_data));
-                len += sprintf(page + len, debug_log[i].string, debug_log[i].value);
-                if (len+begin > off+count)
-                        goto done;
-                if (len+begin < off) {
-                        begin += len;
-                        len = 0;
-                }
+                seq_printf(m, "%-4i %lu.%lu ",
+                         i, debug_log[i].time,
+                         timer_data_to_ns(debug_log[i].timer_data));
+                seq_printf(m, debug_log[i].string, debug_log[i].value);
         }
-        len += sprintf(page + len, "debug_log %i/%i  %li bytes\n",
-                       i, DEBUG_LOG_SIZE, begin+len);
+        seq_printf(m, "debug_log %i/%i\n", i, DEBUG_LOG_SIZE);
         debug_log_pos = 0;
 #endif
+        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 crisv10_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, crisv10_proc_show, NULL);
 }
 
+static const struct file_operations crisv10_proc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = crisv10_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+#endif
+
+
 /* Finally, routines used to initialize the serial driver. */
 
-static void
-show_serial_version(void)
+static void show_serial_version(void)
 {
         printk(KERN_INFO
-               "ETRAX 100LX serial-driver %s, (c) 2000-2004 Axis Communications AB\r\n",
+               "ETRAX 100LX serial-driver %s, "
+               "(c) 2000-2004 Axis Communications AB\r\n",
                &serial_version[11]); /* "$Revision: x.yy" */
 }
 
@@ -4425,13 +4407,14 @@ static const struct tty_operations rs_ops = {
         .break_ctl = rs_break,
         .send_xchar = rs_send_xchar,
         .wait_until_sent = rs_wait_until_sent,
-        .read_proc = rs_read_proc,
         .tiocmget = rs_tiocmget,
-        .tiocmset = rs_tiocmset
+        .tiocmset = rs_tiocmset,
+#ifdef CONFIG_PROC_FS
+        .proc_fops = &crisv10_proc_fops,
+#endif
 };
 
-static int __init
-rs_init(void)
+static int __init rs_init(void)
 {
         int i;
         struct e100_serial *info;