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Message-ID: <20061126013503.GE15364@stusta.de>
Date: Sun, 26 Nov 2006 02:35:03 +0100
From: Adrian Bunk <bunk@...sta.de>
To: johnpol@....mipt.ru
Cc: linux-kernel@...r.kernel.org
Subject: [2.6 patch] better CONFIG_W1_SLAVE_DS2433_CRC handling
CONFIG_W1_SLAVE_DS2433_CRC can be used directly, there's no reason for
the indirection of defining a different variable in the Makefile.
Signed-off-by: Adrian Bunk <bunk@...sta.de>
---
drivers/w1/Makefile | 4 ----
drivers/w1/slaves/Makefile | 4 ----
drivers/w1/slaves/w1_ds2433.c | 30 +++++++++++++++---------------
3 files changed, 15 insertions(+), 23 deletions(-)
--- linux-2.6.19-rc6-mm1/drivers/w1/Makefile.old 2006-11-26 02:08:24.000000000 +0100
+++ linux-2.6.19-rc6-mm1/drivers/w1/Makefile 2006-11-26 02:08:34.000000000 +0100
@@ -1,13 +1,9 @@
#
# Makefile for the Dallas's 1-wire bus.
#
-ifeq ($(CONFIG_W1_DS2433_CRC), y)
-EXTRA_CFLAGS += -DCONFIG_W1_F23_CRC
-endif
-
obj-$(CONFIG_W1) += wire.o
wire-objs := w1.o w1_int.o w1_family.o w1_netlink.o w1_io.o
obj-y += masters/ slaves/
--- linux-2.6.19-rc6-mm1/drivers/w1/slaves/Makefile.old 2006-11-26 02:08:42.000000000 +0100
+++ linux-2.6.19-rc6-mm1/drivers/w1/slaves/Makefile 2006-11-26 02:08:52.000000000 +0100
@@ -1,12 +1,8 @@
#
# Makefile for the Dallas's 1-wire slaves.
#
-ifeq ($(CONFIG_W1_SLAVE_DS2433_CRC), y)
-EXTRA_CFLAGS += -DCONFIG_W1_F23_CRC
-endif
-
obj-$(CONFIG_W1_SLAVE_THERM) += w1_therm.o
obj-$(CONFIG_W1_SLAVE_SMEM) += w1_smem.o
obj-$(CONFIG_W1_SLAVE_DS2433) += w1_ds2433.o
--- linux-2.6.19-rc6-mm1/drivers/w1/slaves/w1_ds2433.c.old 2006-11-26 02:09:02.000000000 +0100
+++ linux-2.6.19-rc6-mm1/drivers/w1/slaves/w1_ds2433.c 2006-11-26 02:09:31.000000000 +0100
@@ -11,11 +11,11 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/types.h>
#include <linux/delay.h>
-#ifdef CONFIG_W1_F23_CRC
+#ifdef CONFIG_W1_SLAVE_DS2433_CRC
#include <linux/crc16.h>
#define CRC16_INIT 0
#define CRC16_VALID 0xb001
@@ -60,11 +60,11 @@
return (size - off);
return count;
}
-#ifdef CONFIG_W1_F23_CRC
+#ifdef CONFIG_W1_SLAVE_DS2433_CRC
static int w1_f23_refresh_block(struct w1_slave *sl, struct w1_f23_data *data,
int block)
{
u8 wrbuf[3];
int off = block * W1_PAGE_SIZE;
@@ -87,17 +87,17 @@
if (crc16(CRC16_INIT, &data->memory[off], W1_PAGE_SIZE) == CRC16_VALID)
data->validcrc |= (1 << block);
return 0;
}
-#endif /* CONFIG_W1_F23_CRC */
+#endif /* CONFIG_W1_SLAVE_DS2433_CRC */
static ssize_t w1_f23_read_bin(struct kobject *kobj, char *buf, loff_t off,
size_t count)
{
struct w1_slave *sl = kobj_to_w1_slave(kobj);
-#ifdef CONFIG_W1_F23_CRC
+#ifdef CONFIG_W1_SLAVE_DS2433_CRC
struct w1_f23_data *data = sl->family_data;
int i, min_page, max_page;
#else
u8 wrbuf[3];
#endif
@@ -105,11 +105,11 @@
if ((count = w1_f23_fix_count(off, count, W1_EEPROM_SIZE)) == 0)
return 0;
mutex_lock(&sl->master->mutex);
-#ifdef CONFIG_W1_F23_CRC
+#ifdef CONFIG_W1_SLAVE_DS2433_CRC
min_page = (off >> W1_PAGE_BITS);
max_page = (off + count - 1) >> W1_PAGE_BITS;
for (i = min_page; i <= max_page; i++) {
if (w1_f23_refresh_block(sl, data, i)) {
@@ -117,11 +117,11 @@
goto out_up;
}
}
memcpy(buf, &data->memory[off], count);
-#else /* CONFIG_W1_F23_CRC */
+#else /* CONFIG_W1_SLAVE_DS2433_CRC */
/* read directly from the EEPROM */
if (w1_reset_select_slave(sl)) {
count = -EIO;
goto out_up;
@@ -131,11 +131,11 @@
wrbuf[1] = off & 0xff;
wrbuf[2] = off >> 8;
w1_write_block(sl->master, wrbuf, 3);
w1_read_block(sl->master, buf, count);
-#endif /* CONFIG_W1_F23_CRC */
+#endif /* CONFIG_W1_SLAVE_DS2433_CRC */
out_up:
mutex_unlock(&sl->master->mutex);
return count;
@@ -206,11 +206,11 @@
int addr, len, idx;
if ((count = w1_f23_fix_count(off, count, W1_EEPROM_SIZE)) == 0)
return 0;
-#ifdef CONFIG_W1_F23_CRC
+#ifdef CONFIG_W1_SLAVE_DS2433_CRC
/* can only write full blocks in cached mode */
if ((off & W1_PAGE_MASK) || (count & W1_PAGE_MASK)) {
dev_err(&sl->dev, "invalid offset/count off=%d cnt=%zd\n",
(int)off, count);
return -EINVAL;
@@ -221,11 +221,11 @@
if (crc16(CRC16_INIT, &buf[idx], W1_PAGE_SIZE) != CRC16_VALID) {
dev_err(&sl->dev, "bad CRC at offset %d\n", (int)off);
return -EINVAL;
}
}
-#endif /* CONFIG_W1_F23_CRC */
+#endif /* CONFIG_W1_SLAVE_DS2433_CRC */
mutex_lock(&sl->master->mutex);
/* Can only write data to one page at a time */
idx = 0;
@@ -260,37 +260,37 @@
};
static int w1_f23_add_slave(struct w1_slave *sl)
{
int err;
-#ifdef CONFIG_W1_F23_CRC
+#ifdef CONFIG_W1_SLAVE_DS2433_CRC
struct w1_f23_data *data;
data = kmalloc(sizeof(struct w1_f23_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
memset(data, 0, sizeof(struct w1_f23_data));
sl->family_data = data;
-#endif /* CONFIG_W1_F23_CRC */
+#endif /* CONFIG_W1_SLAVE_DS2433_CRC */
err = sysfs_create_bin_file(&sl->dev.kobj, &w1_f23_bin_attr);
-#ifdef CONFIG_W1_F23_CRC
+#ifdef CONFIG_W1_SLAVE_DS2433_CRC
if (err)
kfree(data);
-#endif /* CONFIG_W1_F23_CRC */
+#endif /* CONFIG_W1_SLAVE_DS2433_CRC */
return err;
}
static void w1_f23_remove_slave(struct w1_slave *sl)
{
-#ifdef CONFIG_W1_F23_CRC
+#ifdef CONFIG_W1_SLAVE_DS2433_CRC
kfree(sl->family_data);
sl->family_data = NULL;
-#endif /* CONFIG_W1_F23_CRC */
+#endif /* CONFIG_W1_SLAVE_DS2433_CRC */
sysfs_remove_bin_file(&sl->dev.kobj, &w1_f23_bin_attr);
}
static struct w1_family_ops w1_f23_fops = {
.add_slave = w1_f23_add_slave,
-
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