efirtc: Don't use create_proc_read_entry()

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@redhat.com>
cc: Arnd Bergmann <arnd@arndb.de>
cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 40 insertions, 43 deletions

diff --git a/drivers/char/efirtc.c b/drivers/char/efirtc.c
index a082d00b0f11..ea54a6e3f5ad 100644
--- a/drivers/char/efirtc.c
+++ b/drivers/char/efirtc.c
@@ -34,6 +34,7 @@
 #include <linux/init.h>
 #include <linux/rtc.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/efi.h>
 #include <linux/uaccess.h>
 
@@ -296,12 +297,10 @@ static struct miscdevice efi_rtc_dev= {
 /*
  *      We export RAW EFI information to /proc/driver/efirtc
  */
-static int
-efi_rtc_get_status(char *buf)
+static int efi_rtc_proc_show(struct seq_file *m, void *v)
 {
         efi_time_t      eft, alm;
         efi_time_cap_t  cap;
-        char            *p = buf;
         efi_bool_t      enabled, pending;       
         unsigned long   flags;
 
@@ -316,64 +315,63 @@ efi_rtc_get_status(char *buf)
 
         spin_unlock_irqrestore(&efi_rtc_lock,flags);
 
-        p += sprintf(p,
-                     "Time           : %u:%u:%u.%09u\n"
-                     "Date           : %u-%u-%u\n"
-                     "Daylight       : %u\n",
-                     eft.hour, eft.minute, eft.second, eft.nanosecond, 
-                     eft.year, eft.month, eft.day,
-                     eft.daylight);
+        seq_printf(m,
+                   "Time           : %u:%u:%u.%09u\n"
+                   "Date           : %u-%u-%u\n"
+                   "Daylight       : %u\n",
+                   eft.hour, eft.minute, eft.second, eft.nanosecond, 
+                   eft.year, eft.month, eft.day,
+                   eft.daylight);
 
         if (eft.timezone == EFI_UNSPECIFIED_TIMEZONE)
-                p += sprintf(p, "Timezone       : unspecified\n");
+                seq_puts(m, "Timezone       : unspecified\n");
         else
                 /* XXX fixme: convert to string? */
-                p += sprintf(p, "Timezone       : %u\n", eft.timezone);
+                seq_printf(m, "Timezone       : %u\n", eft.timezone);
                 
 
-        p += sprintf(p,
-                     "Alarm Time     : %u:%u:%u.%09u\n"
-                     "Alarm Date     : %u-%u-%u\n"
-                     "Alarm Daylight : %u\n"
-                     "Enabled        : %s\n"
-                     "Pending        : %s\n",
-                     alm.hour, alm.minute, alm.second, alm.nanosecond, 
-                     alm.year, alm.month, alm.day, 
-                     alm.daylight,
-                     enabled == 1 ? "yes" : "no",
-                     pending == 1 ? "yes" : "no");
+        seq_printf(m,
+                   "Alarm Time     : %u:%u:%u.%09u\n"
+                   "Alarm Date     : %u-%u-%u\n"
+                   "Alarm Daylight : %u\n"
+                   "Enabled        : %s\n"
+                   "Pending        : %s\n",
+                   alm.hour, alm.minute, alm.second, alm.nanosecond, 
+                   alm.year, alm.month, alm.day, 
+                   alm.daylight,
+                   enabled == 1 ? "yes" : "no",
+                   pending == 1 ? "yes" : "no");
 
         if (eft.timezone == EFI_UNSPECIFIED_TIMEZONE)
-                p += sprintf(p, "Timezone       : unspecified\n");
+                seq_puts(m, "Timezone       : unspecified\n");
         else
                 /* XXX fixme: convert to string? */
-                p += sprintf(p, "Timezone       : %u\n", alm.timezone);
+                seq_printf(m, "Timezone       : %u\n", alm.timezone);
 
         /*
          * now prints the capabilities
          */
-        p += sprintf(p,
-                     "Resolution     : %u\n"
-                     "Accuracy       : %u\n"
-                     "SetstoZero     : %u\n",
-                      cap.resolution, cap.accuracy, cap.sets_to_zero);
+        seq_printf(m,
+                   "Resolution     : %u\n"
+                   "Accuracy       : %u\n"
+                   "SetstoZero     : %u\n",
+                   cap.resolution, cap.accuracy, cap.sets_to_zero);
 
-        return  p - buf;
+        return 0;
 }
 
-static int
-efi_rtc_read_proc(char *page, char **start, off_t off,
-                                 int count, int *eof, void *data)
+static int efi_rtc_proc_open(struct inode *inode, struct file *file)
 {
-        int len = efi_rtc_get_status(page);
-        if (len <= off+count) *eof = 1;
-        *start = page + off;
-        len -= off;
-        if (len>count) len = count;
-        if (len<0) len = 0;
-        return len;
+        return single_open(file, efi_rtc_proc_show, NULL);
 }
 
+static const struct file_operations efi_rtc_proc_fops = {
+        .open           = efi_rtc_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = seq_release,
+};
+
 static int __init 
 efi_rtc_init(void)
 {
@@ -389,8 +387,7 @@ efi_rtc_init(void)
                 return ret;
         }
 
-        dir = create_proc_read_entry ("driver/efirtc", 0, NULL,
-                                      efi_rtc_read_proc, NULL);
+        dir = proc_create("driver/efirtc", 0, NULL, &efi_rtc_proc_fops);
         if (dir == NULL) {
                 printk(KERN_ERR "efirtc: can't create /proc/driver/efirtc.\n");
                 misc_deregister(&efi_rtc_dev);