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Refine detection.

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git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2597 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Jean Delvare
2004-06-19 07:14:48 +00:00
parent ec02d1a532
commit acb6e485ca
1 changed files with 6 additions and 3 deletions
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9
kernel/chips/pca9540.c
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@@ -68,7 +68,7 @@ static void pca9540_channel(struct i2c_client *client, int operation,
/* This is the driver that will be inserted */ /* This is the driver that will be inserted */
static struct i2c_driver pca9540_driver = { static struct i2c_driver pca9540_driver = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.name = "PCA9540 sensor chip driver", .name = "PCA9540 chip driver",
.flags = I2C_DF_NOTIFY, .flags = I2C_DF_NOTIFY,
.attach_adapter = pca9540_attach_adapter, .attach_adapter = pca9540_attach_adapter,
.detach_client = pca9540_detach_client, .detach_client = pca9540_detach_client,
@@ -122,8 +122,11 @@ int pca9540_detect(struct i2c_adapter *adapter, int address,
/* The detection is very weak. */ /* The detection is very weak. */
if (kind < 0) { if (kind < 0) {
if (i2c_smbus_read_byte(new_client) & 0xf8) u8 reg = i2c_smbus_read_byte(new_client);
{ if ((reg & 0xfa) != 0x00
|| reg != i2c_smbus_read_byte(new_client)
|| reg != i2c_smbus_read_byte(new_client)
|| reg != i2c_smbus_read_byte(new_client)) {
err = -ENODEV; err = -ENODEV;
goto ERROR1; goto ERROR1;
} }