Commit b8775252 authored by Alain Volmat's avatar Alain Volmat Committed by Wolfram Sang
Browse files

i2c: stm32f7: indicate the address being accessed on errors 



To help debugging issues, add the address of the slave being
accessed when getting an error.

Signed-off-by: default avatarAlain Volmat <alain.volmat@foss.st.com>
Signed-off-by: default avatarPierre-Yves MORDRET <pierre-yves.mordret@foss.st.com>
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
parent 9449a558

drivers/i2c/busses/i2c-stm32f7.c

+6 −3
Original line number Diff line number Diff line
@@ -1602,7 +1602,8 @@ static irqreturn_t stm32f7_i2c_isr_error(int irq, void *data) 


	/* Bus error */

	if (status & STM32F7_I2C_ISR_BERR) {

		dev_err(dev, "<%s>: Bus error\n", __func__);

		dev_err(dev, "<%s>: Bus error accessing addr 0x%x\n",

			__func__, f7_msg->addr);

		writel_relaxed(STM32F7_I2C_ICR_BERRCF, base + STM32F7_I2C_ICR);

		stm32f7_i2c_release_bus(&i2c_dev->adap);

		f7_msg->result = -EIO;
@@ -1610,13 +1611,15 @@ static irqreturn_t stm32f7_i2c_isr_error(int irq, void *data) 


	/* Arbitration loss */

	if (status & STM32F7_I2C_ISR_ARLO) {

		dev_dbg(dev, "<%s>: Arbitration loss\n", __func__);

		dev_dbg(dev, "<%s>: Arbitration loss accessing addr 0x%x\n",

			__func__, f7_msg->addr);

		writel_relaxed(STM32F7_I2C_ICR_ARLOCF, base + STM32F7_I2C_ICR);

		f7_msg->result = -EAGAIN;

	}



	if (status & STM32F7_I2C_ISR_PECERR) {

		dev_err(dev, "<%s>: PEC error in reception\n", __func__);

		dev_err(dev, "<%s>: PEC error in reception accessing addr 0x%x\n",

			__func__, f7_msg->addr);

		writel_relaxed(STM32F7_I2C_ICR_PECCF, base + STM32F7_I2C_ICR);

		f7_msg->result = -EINVAL;

	}