Commit c018664c authored Oct 16, 2007 by Jean Delvare Committed by Linus Torvalds Oct 16, 2007

rtc-pcf8583: Check for i2c adapter functionality



Not all i2c adapters support I2C-level messaging.  Check that the adapter
does before probing for a PCF8583 chip, as the driver makes use of
i2c_transfer and i2c_master_send.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent a95e23a2

drivers/rtc/rtc-pcf8583.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -332,6 +332,9 @@ static int pcf8583_probe(struct i2c_adapter *adap, int addr, int kind)
		}
		};

		if (!i2c_check_functionality(adap, I2C_FUNC_I2C))
		return 0;

		pcf = kzalloc(sizeof(*pcf), GFP_KERNEL);
		if (!pcf)
		return -ENOMEM;