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-rw-r--r--drivers/w1/slaves/w1_therm.c55
-rw-r--r--drivers/w1/w1.h1
2 files changed, 20 insertions, 36 deletions
diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c
index e87f464a6fb..7de99dfd11c 100644
--- a/drivers/w1/slaves/w1_therm.c
+++ b/drivers/w1/slaves/w1_therm.c
@@ -50,26 +50,20 @@ static u8 bad_roms[][9] = {
{}
};
-static ssize_t w1_therm_read_bin(struct kobject *, struct bin_attribute *,
- char *, loff_t, size_t);
+static ssize_t w1_therm_read(struct device *device,
+ struct device_attribute *attr, char *buf);
-static struct bin_attribute w1_therm_bin_attr = {
- .attr = {
- .name = "w1_slave",
- .mode = S_IRUGO,
- },
- .size = W1_SLAVE_DATA_SIZE,
- .read = w1_therm_read_bin,
-};
+static struct device_attribute w1_therm_attr =
+ __ATTR(w1_slave, S_IRUGO, w1_therm_read, NULL);
static int w1_therm_add_slave(struct w1_slave *sl)
{
- return sysfs_create_bin_file(&sl->dev.kobj, &w1_therm_bin_attr);
+ return device_create_file(&sl->dev, &w1_therm_attr);
}
static void w1_therm_remove_slave(struct w1_slave *sl)
{
- sysfs_remove_bin_file(&sl->dev.kobj, &w1_therm_bin_attr);
+ device_remove_file(&sl->dev, &w1_therm_attr);
}
static struct w1_family_ops w1_therm_fops = {
@@ -168,30 +162,19 @@ static int w1_therm_check_rom(u8 rom[9])
return 0;
}
-static ssize_t w1_therm_read_bin(struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buf, loff_t off, size_t count)
+static ssize_t w1_therm_read(struct device *device,
+ struct device_attribute *attr, char *buf)
{
- struct w1_slave *sl = kobj_to_w1_slave(kobj);
+ struct w1_slave *sl = dev_to_w1_slave(device);
struct w1_master *dev = sl->master;
u8 rom[9], crc, verdict;
int i, max_trying = 10;
+ ssize_t c = PAGE_SIZE;
mutex_lock(&sl->master->mutex);
- if (off > W1_SLAVE_DATA_SIZE) {
- count = 0;
- goto out;
- }
- if (off + count > W1_SLAVE_DATA_SIZE) {
- count = 0;
- goto out;
- }
-
- memset(buf, 0, count);
memset(rom, 0, sizeof(rom));
- count = 0;
verdict = 0;
crc = 0;
@@ -211,7 +194,9 @@ static ssize_t w1_therm_read_bin(struct kobject *kobj,
w1_write_8(dev, W1_READ_SCRATCHPAD);
if ((count = w1_read_block(dev, rom, 9)) != 9) {
- dev_warn(&dev->dev, "w1_read_block() returned %d instead of 9.\n", count);
+ dev_warn(device, "w1_read_block() "
+ "returned %u instead of 9.\n",
+ count);
}
crc = w1_calc_crc8(rom, 8);
@@ -226,22 +211,22 @@ static ssize_t w1_therm_read_bin(struct kobject *kobj,
}
for (i = 0; i < 9; ++i)
- count += sprintf(buf + count, "%02x ", rom[i]);
- count += sprintf(buf + count, ": crc=%02x %s\n",
+ c -= snprintf(buf + PAGE_SIZE - c, c, "%02x ", rom[i]);
+ c -= snprintf(buf + PAGE_SIZE - c, c, ": crc=%02x %s\n",
crc, (verdict) ? "YES" : "NO");
if (verdict)
memcpy(sl->rom, rom, sizeof(sl->rom));
else
- dev_warn(&dev->dev, "18S20 doesn't respond to CONVERT_TEMP.\n");
+ dev_warn(device, "18S20 doesn't respond to CONVERT_TEMP.\n");
for (i = 0; i < 9; ++i)
- count += sprintf(buf + count, "%02x ", sl->rom[i]);
+ c -= snprintf(buf + PAGE_SIZE - c, c, "%02x ", sl->rom[i]);
- count += sprintf(buf + count, "t=%d\n", w1_convert_temp(rom, sl->family->fid));
-out:
+ c -= snprintf(buf + PAGE_SIZE - c, c, "t=%d\n",
+ w1_convert_temp(rom, sl->family->fid));
mutex_unlock(&dev->mutex);
- return count;
+ return PAGE_SIZE - c;
}
static int __init w1_therm_init(void)
diff --git a/drivers/w1/w1.h b/drivers/w1/w1.h
index 00b84ab2280..cdaa6fffbfc 100644
--- a/drivers/w1/w1.h
+++ b/drivers/w1/w1.h
@@ -46,7 +46,6 @@ struct w1_reg_num
#include "w1_family.h"
#define W1_MAXNAMELEN 32
-#define W1_SLAVE_DATA_SIZE 128
#define W1_SEARCH 0xF0
#define W1_ALARM_SEARCH 0xEC