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authorJean Delvare <khali@linux-fr.org>2009-12-09 20:35:57 +0100
committerJean Delvare <khali@linux-fr.org>2009-12-09 20:35:57 +0100
commit52df6440a29123eed912183fe785bbe174ef14b9 (patch)
tree3a3b9f4110d21c2ec4f5711444dd9cec6fb3d32c /drivers/hwmon/lm87.c
parenta1fa4cdcc4abd4c02a81ab7052c16a342d29f060 (diff)
downloadop-kernel-dev-52df6440a29123eed912183fe785bbe174ef14b9.zip
op-kernel-dev-52df6440a29123eed912183fe785bbe174ef14b9.tar.gz
hwmon: Clean up detect functions
As kind is now hard-coded to -1, there is room for code clean-ups. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Corentin Labbe <corentin.labbe@geomatys.fr> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Juerg Haefliger <juergh@gmail.com> Cc: Riku Voipio <riku.voipio@iki.fi> Acked-by: "Hans J. Koch" <hjk@linutronix.de> Cc: Rudolf Marek <r.marek@assembler.cz>
Diffstat (limited to 'drivers/hwmon/lm87.c')
-rw-r--r--drivers/hwmon/lm87.c41
1 files changed, 18 insertions, 23 deletions
diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c
index 2e4a3ce..4929b18 100644
--- a/drivers/hwmon/lm87.c
+++ b/drivers/hwmon/lm87.c
@@ -666,37 +666,32 @@ static int lm87_detect(struct i2c_client *new_client, int kind,
struct i2c_board_info *info)
{
struct i2c_adapter *adapter = new_client->adapter;
- static const char *names[] = { "lm87", "adm1024" };
+ const char *name;
+ u8 cid, rev;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
- /* Default to an LM87 if forced */
- if (kind == 0)
- kind = lm87;
+ if (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80)
+ return -ENODEV;
/* Now, we do the remaining detection. */
- if (kind < 0) {
- u8 cid = lm87_read_value(new_client, LM87_REG_COMPANY_ID);
- u8 rev = lm87_read_value(new_client, LM87_REG_REVISION);
-
- if (cid == 0x02 /* National Semiconductor */
- && (rev >= 0x01 && rev <= 0x08))
- kind = lm87;
- else if (cid == 0x41 /* Analog Devices */
- && (rev & 0xf0) == 0x10)
- kind = adm1024;
-
- if (kind < 0
- || (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80)) {
- dev_dbg(&adapter->dev,
- "LM87 detection failed at 0x%02x.\n",
- new_client->addr);
- return -ENODEV;
- }
+ cid = lm87_read_value(new_client, LM87_REG_COMPANY_ID);
+ rev = lm87_read_value(new_client, LM87_REG_REVISION);
+
+ if (cid == 0x02 /* National Semiconductor */
+ && (rev >= 0x01 && rev <= 0x08))
+ name = "lm87";
+ else if (cid == 0x41 /* Analog Devices */
+ && (rev & 0xf0) == 0x10)
+ name = "adm1024";
+ else {
+ dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n",
+ new_client->addr);
+ return -ENODEV;
}
- strlcpy(info->type, names[kind - 1], I2C_NAME_SIZE);
+ strlcpy(info->type, name, I2C_NAME_SIZE);
return 0;
}
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