Commit 24c6d4bc authored by Wolfram Sang's avatar Wolfram Sang Committed by Wolfram Sang
Browse files

i2c: rcar: make sure irq is not threaded on Gen2 and earlier 



Ensure this irq runs as fast as possible.

Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: default avatarNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
parent 25c2e0fb

drivers/i2c/busses/i2c-rcar.c

+5 −1
Original line number Diff line number Diff line
@@ -928,6 +928,7 @@ static int rcar_i2c_probe(struct platform_device *pdev) 
	struct rcar_i2c_priv *priv;

	struct i2c_adapter *adap;

	struct device *dev = &pdev->dev;

	unsigned long irqflags = 0;

	int ret;



	/* Otherwise logic will break because some bytes must always use PIO */
@@ -976,6 +977,9 @@ static int rcar_i2c_probe(struct platform_device *pdev) 


	rcar_i2c_write(priv, ICSAR, 0); /* Gen2: must be 0 if not using slave */



	if (priv->devtype < I2C_RCAR_GEN3)

		irqflags |= IRQF_NO_THREAD;



	if (priv->devtype == I2C_RCAR_GEN3) {

		priv->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);

		if (!IS_ERR(priv->rstc)) {
@@ -995,7 +999,7 @@ static int rcar_i2c_probe(struct platform_device *pdev) 
		priv->flags |= ID_P_HOST_NOTIFY;



	priv->irq = platform_get_irq(pdev, 0);

	ret = devm_request_irq(dev, priv->irq, rcar_i2c_irq, 0, dev_name(dev), priv);

	ret = devm_request_irq(dev, priv->irq, rcar_i2c_irq, irqflags, dev_name(dev), priv);

	if (ret < 0) {

		dev_err(dev, "cannot get irq %d\n", priv->irq);

		goto out_pm_disable;