Merge tag 'i2c-host-fixes-6.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-current

i2c-host fixes for v6.12-rc7

In designware an incorrect behavior has been fixes when
concluding a transmission.

Fixed return error value evaluation in the Mule multiplexer.

Author: Wolfram Sang

drivers/i2c/busses/i2c-designware-common.c

@@ -524,17 +524,19 @@ int i2c_dw_set_sda_hold(struct dw_i2c_dev *dev)
 void __i2c_dw_disable(struct dw_i2c_dev *dev)
 {
 	struct i2c_timings *t = &dev->timings;
-	unsigned int raw_intr_stats;
+	unsigned int raw_intr_stats, ic_stats;
 	unsigned int enable;
 	int timeout = 100;
 	bool abort_needed;
 	unsigned int status;
 	int ret;
 
 	regmap_read(dev->map, DW_IC_RAW_INTR_STAT, &raw_intr_stats);
+	regmap_read(dev->map, DW_IC_STATUS, &ic_stats);
 	regmap_read(dev->map, DW_IC_ENABLE, &enable);
 
-	abort_needed = raw_intr_stats & DW_IC_INTR_MST_ON_HOLD;
+	abort_needed = (raw_intr_stats & DW_IC_INTR_MST_ON_HOLD) ||
+			(ic_stats & DW_IC_STATUS_MASTER_HOLD_TX_FIFO_EMPTY);
 	if (abort_needed) {
 		if (!(enable & DW_IC_ENABLE_ENABLE)) {
 			regmap_write(dev->map, DW_IC_ENABLE, DW_IC_ENABLE_ENABLE);

drivers/i2c/busses/i2c-designware-core.h

@@ -116,6 +116,7 @@
 #define DW_IC_STATUS_RFNE			BIT(3)
 #define DW_IC_STATUS_MASTER_ACTIVITY		BIT(5)
 #define DW_IC_STATUS_SLAVE_ACTIVITY		BIT(6)
+#define DW_IC_STATUS_MASTER_HOLD_TX_FIFO_EMPTY	BIT(7)
 
 #define DW_IC_SDA_HOLD_RX_SHIFT			16
 #define DW_IC_SDA_HOLD_RX_MASK			GENMASK(23, 16)

drivers/i2c/muxes/i2c-mux-mule.c

@@ -66,8 +66,8 @@ static int mule_i2c_mux_probe(struct platform_device *pdev)
 	priv = i2c_mux_priv(muxc);
 
 	priv->regmap = dev_get_regmap(mux_dev->parent, NULL);
-	if (IS_ERR(priv->regmap))
-		return dev_err_probe(mux_dev, PTR_ERR(priv->regmap),
+	if (!priv->regmap)
+		return dev_err_probe(mux_dev, -ENODEV,
 				     "No parent i2c register map\n");
 
 	platform_set_drvdata(pdev, muxc);