i2c: rcar: use core to detect 'no zero length' quirk (3ef3e5cd) · Commits · 戴 / test

drivers/i2c/busses/i2c-rcar.c

+6 −7

Original line number	Diff line number	Diff line
		@@ -796,14 +796,8 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap,
		if (ret < 0)
		goto out;

		for (i = 0; i < num; i++) {
		/* This HW can't send STOP after address phase */
		if (msgs[i].len == 0) {
		ret = -EOPNOTSUPP;
		goto out;
		}
		for (i = 0; i < num; i++)
		rcar_i2c_request_dma(priv, msgs + i);
		}

		/* init first message */
		priv->msg = msgs;
		@@ -890,6 +884,10 @@ static const struct i2c_algorithm rcar_i2c_algo = {
		.unreg_slave = rcar_unreg_slave,
		};

		static const struct i2c_adapter_quirks rcar_i2c_quirks = {
		.flags = I2C_AQ_NO_ZERO_LEN,
		};

		static const struct of_device_id rcar_i2c_dt_ids[] = {
		{ .compatible = "renesas,i2c-r8a7778", .data = (void *)I2C_RCAR_GEN1 },
		{ .compatible = "renesas,i2c-r8a7779", .data = (void *)I2C_RCAR_GEN1 },
		@@ -943,6 +941,7 @@ static int rcar_i2c_probe(struct platform_device *pdev)
		adap->dev.parent = dev;
		adap->dev.of_node = dev->of_node;
		adap->bus_recovery_info = &rcar_i2c_bri;
		adap->quirks = &rcar_i2c_quirks;
		i2c_set_adapdata(adap, priv);
		strlcpy(adap->name, pdev->name, sizeof(adap->name));