[PATCH 23/26] h8300: Don't use create_proc_read_entry() [RFC]

From: David Howells
Date: Thu Apr 11 2013 - 09:30:58 EST


Don't use create_proc_read_entry() as that is deprecated, but rather use
proc_create_data() and seq_file instead.

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
---

arch/h8300/kernel/gpio.c | 34 ++++++++++++++++++++--------------
1 file changed, 20 insertions(+), 14 deletions(-)

diff --git a/arch/h8300/kernel/gpio.c b/arch/h8300/kernel/gpio.c
index f8a4f5b..b02c752 100644
--- a/arch/h8300/kernel/gpio.c
+++ b/arch/h8300/kernel/gpio.c
@@ -11,6 +11,7 @@

#include <linux/stddef.h>
#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/fs.h>
@@ -138,29 +139,34 @@ static char *port_status(int portno)
return result;
}

-static int gpio_proc_read(char *buf, char **start, off_t offset,
- int len, int *unused_i, void *unused_v)
+static int gpio_proc_show(struct seq_file *m, void *v)
{
- int c,outlen;
static const char port_name[]="123456789ABCDEFGH";
- outlen = 0;
+ int c;
+
for (c = 0; c < MAX_PORT; c++) {
if (ddrs[c] == NULL)
- continue ;
- len = sprintf(buf,"P%c: %s\n",port_name[c],port_status(c));
- buf += len;
- outlen += len;
+ continue;
+ seq_printf(m, "P%c: %s\n", port_name[c], port_status(c));
}
- return outlen;
+ return 0;
}

-static __init int register_proc(void)
+static int gpio_proc_open(struct inode *inode, struct file *file)
{
- struct proc_dir_entry *proc_gpio;
+ return single_open(file, gpio_proc_show, PDE_DATA(inode));
+}

- proc_gpio = create_proc_read_entry("gpio", S_IRUGO, NULL,
- gpio_proc_read, NULL);
- return proc_gpio != NULL;
+static const struct file_operations gpio_proc_fops = {
+ .open = gpio_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static __init int register_proc(void)
+{
+ return proc_create("gpio", S_IRUGO, NULL, &gpio_proc_fops) != NULL;
}

__initcall(register_proc);

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