proc: switch /proc/excite/unit_id to seq_file interface

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Thomas Koeller <thomas.koeller@baslerweb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 20 insertions, 8 deletions

diff --git a/arch/mips/basler/excite/excite_procfs.c b/arch/mips/basler/excite/excite_procfs.c
index 6c08b386fdad..08923e6825b5 100644
--- a/arch/mips/basler/excite/excite_procfs.c
+++ b/arch/mips/basler/excite/excite_procfs.c
@@ -18,8 +18,9 @@
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
-
+#include <linux/module.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/stat.h>
 #include <asm/page.h>
 #include <asm/io.h>
@@ -28,14 +29,25 @@
 
 #include <excite.h>
 
-static int excite_get_unit_id(char *buf, char **addr, off_t offs, int size)
+static int excite_unit_id_proc_show(struct seq_file *m, void *v)
 {
-        const int len = snprintf(buf, PAGE_SIZE, "%06x", unit_id);
-        const int w = len - offs;
-        *addr = buf + offs;
-        return w < size ? w : size;
+        seq_printf(m, "%06x", unit_id);
+        return 0;
 }
 
+static int excite_unit_id_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, excite_unit_id_proc_show, NULL);
+}
+
+static const struct file_operations excite_unit_id_proc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = excite_unit_id_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
 static int
 excite_bootrom_read(char *page, char **start, off_t off, int count,
                   int *eof, void *data)
@@ -69,8 +81,8 @@ void excite_procfs_init(void)
         if (pdir) {
                 struct proc_dir_entry * e;
 
-                e = create_proc_info_entry("unit_id", S_IRUGO, pdir,
-                                           excite_get_unit_id);
+                e = proc_create("unit_id", S_IRUGO, pdir,
+                                &excite_unit_id_proc_fops);
                 if (e) e->size = 6;
 
                 e = create_proc_read_entry("bootrom", S_IRUGO, pdir,