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proc: switch /proc/bus/zorro/devices to seq_file interface 

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Cc: Josef Sipek <jsipek@fsl.cs.sunysb.edu>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Alexey Dobriyan 2008-04-29 01:01:45 -07:00 committed by Linus Torvalds
parent c74c120a21
commit 8331438b38
1 changed files with 47 additions and 25 deletions
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72
drivers/zorro/proc.c
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@ -13,6 +13,7 @@
#include <linux/types.h>
#include <linux/zorro.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/init.h>
#include <linux/smp_lock.h>
#include <asm/uaccess.h>
@ -80,32 +81,53 @@ static const struct file_operations proc_bus_zorro_operations = {
.read = proc_bus_zorro_read,
};
static int
get_zorro_dev_info(char *buf, char **start, off_t pos, int count)
static void * zorro_seq_start(struct seq_file *m, loff_t *pos)
{
u_int slot;
off_t at = 0;
int len, cnt;
for (slot = cnt = 0; slot < zorro_num_autocon && count > cnt; slot++) {
struct zorro_dev *z = &zorro_autocon[slot];
len = sprintf(buf, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot,
z->id, (unsigned long)zorro_resource_start(z),
(unsigned long)zorro_resource_len(z),
z->rom.er_Type);
at += len;
if (at >= pos) {
if (!*start) {
*start = buf + (pos - (at - len));
cnt = at - pos;
} else
cnt += len;
buf += len;
}
}
return (count > cnt) ? cnt : count;
return (*pos < zorro_num_autocon) ? pos : NULL;
}
static void * zorro_seq_next(struct seq_file *m, void *v, loff_t *pos)
{
(*pos)++;
return (*pos < zorro_num_autocon) ? pos : NULL;
}
static void zorro_seq_stop(struct seq_file *m, void *v)
{
}
static int zorro_seq_show(struct seq_file *m, void *v)
{
u_int slot = *(loff_t *)v;
struct zorro_dev *z = &zorro_autocon[slot];
seq_printf(m, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot, z->id,
(unsigned long)zorro_resource_start(z),
(unsigned long)zorro_resource_len(z),
z->rom.er_Type);
return 0;
}
static const struct seq_operations zorro_devices_seq_ops = {
.start = zorro_seq_start,
.next = zorro_seq_next,
.stop = zorro_seq_stop,
.show = zorro_seq_show,
};
static int zorro_devices_proc_open(struct inode *inode, struct file *file)
{
return seq_open(file, &zorro_devices_seq_ops);
}
static const struct file_operations zorro_devices_proc_fops = {
.owner = THIS_MODULE,
.open = zorro_devices_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static struct proc_dir_entry *proc_bus_zorro_dir;
static int __init zorro_proc_attach_device(u_int slot)
@ -129,8 +151,8 @@ static int __init zorro_proc_init(void)
if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) {
proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL);
create_proc_info_entry("devices", 0, proc_bus_zorro_dir,
get_zorro_dev_info);
proc_create("devices", 0, proc_bus_zorro_dir,
&zorro_devices_proc_fops);
for (slot = 0; slot < zorro_num_autocon; slot++)
zorro_proc_attach_device(slot);
}