Commit 0d1ad98d authored Jul 27, 2015 by Vladimir Zapolskiy Committed by Wolfram Sang Aug 10, 2015

i2c: arb-gpio-challenge: use of_get_i2c_adapter_by_node interface



This change is needed to properly lock I2C parent bus driver.

Prior to this change i2c_put_adapter() is misused, which may lead
to an overflow over zero of I2C bus driver user counter.

Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

parent 48e9743d

drivers/i2c/muxes/i2c-arb-gpio-challenge.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -196,7 +196,7 @@ static int i2c_arbitrator_probe(struct platform_device *pdev)
		dev_err(dev, "Cannot parse i2c-parent\n");
		return -EINVAL;
		}
		arb->parent = of_find_i2c_adapter_by_node(parent_np);
		arb->parent = of_get_i2c_adapter_by_node(parent_np);
		if (!arb->parent) {
		dev_err(dev, "Cannot find parent bus\n");
		return -EPROBE_DEFER;