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authorWolfram Sang <w.sang@pengutronix.de>2010-06-03 11:33:58 +0200
committerJean Delvare <khali@linux-fr.org>2010-06-03 11:33:58 +0200
commitfbae3fb1546e199ab0cd185348f8124411a1ca9d (patch)
tree928881dc419348268cbc8208a41fe0d038035114 /drivers/input/misc
parent35bfc353dcaecc99c277e3646564f3f785760bde (diff)
i2c: Remove all i2c_set_clientdata(client, NULL) in drivers
I2C drivers can use the clientdata-pointer to point to private data. As I2C devices are not really unregistered, but merely detached from their driver, it used to be the drivers obligation to clear this pointer during remove() or a failed probe(). As a couple of drivers forgot to do this, it was agreed that it was cleaner if the i2c-core does this clearance when appropriate, as there is no guarantee for the lifetime of the clientdata-pointer after remove() anyhow. This feature was added to the core with commit e4a7b9b04de15f6b63da5ccdd373ffa3057a3681 to fix the faulty drivers. As there is no need anymore to clear the clientdata-pointer, remove all current occurrences in the drivers to simplify the code and prevent confusion. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Richard Purdie <rpurdie@linux.intel.com> Acked-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/input/misc')
-rw-r--r--drivers/input/misc/ad714x-i2c.c1
-rw-r--r--drivers/input/misc/pcf8574_keypad.c2
2 files changed, 0 insertions, 3 deletions
diff --git a/drivers/input/misc/ad714x-i2c.c b/drivers/input/misc/ad714x-i2c.c
index e9adbe49f6a4..2bef8fa56c94 100644
--- a/drivers/input/misc/ad714x-i2c.c
+++ b/drivers/input/misc/ad714x-i2c.c
@@ -97,7 +97,6 @@ static int __devexit ad714x_i2c_remove(struct i2c_client *client)
struct ad714x_chip *chip = i2c_get_clientdata(client);
ad714x_remove(chip);
- i2c_set_clientdata(client, NULL);
return 0;
}
diff --git a/drivers/input/misc/pcf8574_keypad.c b/drivers/input/misc/pcf8574_keypad.c
index 5c3ac4e0b055..0ac47d2898ec 100644
--- a/drivers/input/misc/pcf8574_keypad.c
+++ b/drivers/input/misc/pcf8574_keypad.c
@@ -168,8 +168,6 @@ static int __devexit pcf8574_kp_remove(struct i2c_client *client)
input_unregister_device(lp->idev);
kfree(lp);
- i2c_set_clientdata(client, NULL);
-
return 0;
}