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

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Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Yani Ioannou <yani.ioannou@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexey Dobriyan 2008-04-29 01:01:49 -07:00 committed by Linus Torvalds
parent 5125154914
commit 9b0012126a
1 changed files with 25 additions and 27 deletions
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52
arch/arm/kernel/ecard.c
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@ -37,6 +37,7 @@
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/mutex.h>
@ -723,17 +724,14 @@ unsigned int __ecard_address(ecard_t *ec, card_type_t type, card_speed_t speed)
return address;
}
static int ecard_prints(char *buffer, ecard_t *ec)
static int ecard_prints(struct seq_file *m, ecard_t *ec)
{
char *start = buffer;
buffer += sprintf(buffer, " %d: %s ", ec->slot_no,
ec->easi ? "EASI" : " ");
seq_printf(m, " %d: %s ", ec->slot_no, ec->easi ? "EASI" : " ");
if (ec->cid.id == 0) {
struct in_chunk_dir incd;
buffer += sprintf(buffer, "[%04X:%04X] ",
seq_printf(m, "[%04X:%04X] ",
ec->cid.manufacturer, ec->cid.product);
if (!ec->card_desc && ec->cid.cd &&
@ -744,43 +742,43 @@ static int ecard_prints(char *buffer, ecard_t *ec)
strcpy((char *)ec->card_desc, incd.d.string);
}
buffer += sprintf(buffer, "%s\n", ec->card_desc ? ec->card_desc : "*unknown*");
seq_printf(m, "%s\n", ec->card_desc ? ec->card_desc : "*unknown*");
} else
buffer += sprintf(buffer, "Simple card %d\n", ec->cid.id);
seq_printf(m, "Simple card %d\n", ec->cid.id);
return buffer - start;
return 0;
}
static int get_ecard_dev_info(char *buf, char **start, off_t pos, int count)
static int ecard_devices_proc_show(struct seq_file *m, void *v)
{
ecard_t *ec = cards;
off_t at = 0;
int len, cnt;
cnt = 0;
while (ec && count > cnt) {
len = ecard_prints(buf, ec);
at += len;
if (at >= pos) {
if (!*start) {
*start = buf + (pos - (at - len));
cnt = at - pos;
} else
cnt += len;
buf += len;
}
while (ec) {
ecard_prints(m, ec);
ec = ec->next;
}
return (count > cnt) ? cnt : count;
return 0;
}
static int ecard_devices_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, ecard_devices_proc_show, NULL);
}
static const struct file_operations bus_ecard_proc_fops = {
.owner = THIS_MODULE,
.open = ecard_devices_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static struct proc_dir_entry *proc_bus_ecard_dir = NULL;
static void ecard_proc_init(void)
{
proc_bus_ecard_dir = proc_mkdir("bus/ecard", NULL);
create_proc_info_entry("devices", 0, proc_bus_ecard_dir,
get_ecard_dev_info);
proc_create("devices", 0, proc_bus_ecard_dir, &bus_ecard_proc_fops);
}
#define ec_set_resource(ec,nr,st,sz) \