[POWERPC] Sky Cpu and Nexus: use seq_file/single_open on proc interface

This patch changes proc interface to be used with single_file/seq_open
calls.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 39 insertions, 13 deletions

diff --git a/drivers/misc/hdpuftrs/hdpu_nexus.c b/drivers/misc/hdpuftrs/hdpu_nexus.c
index cc81853..2887b21 100644
--- a/drivers/misc/hdpuftrs/hdpu_nexus.c
+++ b/drivers/misc/hdpuftrs/hdpu_nexus.c
@@ -18,18 +18,38 @@
 #include <linux/kernel.h>
 #include <linux/proc_fs.h>
 #include <linux/hdpu_features.h>
-
 #include <linux/platform_device.h>
+#include <linux/seq_file.h>
 #include <asm/io.h>
 
 static int hdpu_nexus_probe(struct platform_device *pdev);
 static int hdpu_nexus_remove(struct platform_device *pdev);
+static int hdpu_slot_id_open(struct inode *inode, struct file *file);
+static int hdpu_slot_id_read(struct seq_file *seq, void *offset);
+static int hdpu_chassis_id_open(struct inode *inode, struct file *file);
+static int hdpu_chassis_id_read(struct seq_file *seq, void *offset);
 
 static struct proc_dir_entry *hdpu_slot_id;
 static struct proc_dir_entry *hdpu_chassis_id;
 static int slot_id = -1;
 static int chassis_id = -1;
 
+static const struct file_operations proc_slot_id = {
+	.open = hdpu_slot_id_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static const struct file_operations proc_chassis_id = {
+	.open = hdpu_chassis_id_open,
+	.read = seq_read,
+	.llseek	= seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
 static struct platform_driver hdpu_nexus_driver = {
 	.probe = hdpu_nexus_probe,
 	.remove = hdpu_nexus_remove,
@@ -38,22 +58,26 @@ static struct platform_driver hdpu_nexus_driver = {
 	},
 };
 
-int hdpu_slot_id_read(char *buffer, char **buffer_location, off_t offset,
-		      int buffer_length, int *zero, void *ptr)
+static int hdpu_slot_id_open(struct inode *inode, struct file *file)
 {
-	if (offset > 0)
-		return 0;
+	return single_open(file, hdpu_slot_id_read, NULL);
+}
 
-	return sprintf(buffer, "%d\n", slot_id);
+static int hdpu_slot_id_read(struct seq_file *seq, void *offset)
+{
+	seq_printf(seq, "%d\n", slot_id);
+	return 0;
 }
 
-int hdpu_chassis_id_read(char *buffer, char **buffer_location, off_t offset,
-			 int buffer_length, int *zero, void *ptr)
+static int hdpu_chassis_id_open(struct inode *inode, struct file *file)
 {
-	if (offset > 0)
-		return 0;
+	return single_open(file, hdpu_chassis_id_read, NULL);
+}
 
-	return sprintf(buffer, "%d\n", chassis_id);
+static int hdpu_chassis_id_read(struct seq_file *seq, void *offset)
+{
+	seq_printf(seq, "%d\n", chassis_id);
+	return 0;
 }
 
 static int hdpu_nexus_probe(struct platform_device *pdev)
@@ -82,7 +106,8 @@ static int hdpu_nexus_probe(struct platform_device *pdev)
 		printk(KERN_WARNING "sky_nexus: "
 		       "Unable to create proc dir entry: sky_slot_id\n");
 	} else {
-		hdpu_slot_id->read_proc = hdpu_slot_id_read;
+		hdpu_slot_id->proc_fops = &proc_slot_id;
+		hdpu_slot_id->owner = THIS_MODULE;
 	}
 
 	hdpu_chassis_id = create_proc_entry("sky_chassis_id", 0666, &proc_root);
@@ -90,7 +115,8 @@ static int hdpu_nexus_probe(struct platform_device *pdev)
 		printk(KERN_WARNING "sky_nexus: "
 		       "Unable to create proc dir entry: sky_chassis_id\n");
 	} else {
-		hdpu_chassis_id->read_proc = hdpu_chassis_id_read;
+		hdpu_chassis_id->proc_fops = &proc_chassis_id;
+		hdpu_chassis_id->owner = THIS_MODULE;
 	}
 
 	return 0;