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Subject[PATCH] seq_file conversion: APM on arm
Compile-tested.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
arch/arm/kernel/apm.c | 28 +++++++++++++++++++++++-----
1 file changed, 23 insertions(+), 5 deletions(-)
--- a/arch/arm/kernel/apm.c
+++ b/arch/arm/kernel/apm.c
@@ -14,6 +14,7 @@ #include <linux/module.h>
#include <linux/poll.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
#include <linux/miscdevice.h>
#include <linux/apm_bios.h>
#include <linux/capability.h>
@@ -501,11 +502,10 @@ #ifdef CONFIG_PROC_FS
* -1: Unknown
* 8) min = minutes; sec = seconds
*/
-static int apm_get_info(char *buf, char **start, off_t fpos, int length)
+static int proc_apm_show(struct seq_file *m, void *v)
{
struct apm_power_info info;
char *units;
- int ret;

info.ac_line_status = 0xff;
info.battery_status = 0xff;
@@ -523,14 +523,26 @@ static int apm_get_info(char *buf, char
case 1: units = "sec"; break;
}

- ret = sprintf(buf, "%s 1.2 0x%02x 0x%02x 0x%02x 0x%02x %d%% %d %s\n",
+ seq_printf(m, "%s 1.2 0x%02x 0x%02x 0x%02x 0x%02x %d%% %d %s\n",
driver_version, APM_32_BIT_SUPPORT,
info.ac_line_status, info.battery_status,
info.battery_flag, info.battery_life,
info.time, units);
+ return 0;
+}

- return ret;
+static int proc_apm_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, proc_apm_show, NULL);
}
+
+static const struct file_operations proc_apm_fops = {
+ .owner = THIS_MODULE,
+ .open = proc_apm_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
#endif

static int kapmd(void *arg)
@@ -602,7 +614,13 @@ static int __init apm_init(void)
wake_up_process(kapmd_tsk);

#ifdef CONFIG_PROC_FS
- create_proc_info_entry("apm", 0, NULL, apm_get_info);
+ {
+ struct proc_dir_entry *pde;
+
+ pde = create_proc_entry("apm", 0, NULL);
+ if (pde)
+ pde->proc_fops = &proc_apm_fops;
+ }
#endif

ret = misc_register(&apm_device);
-
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