Re: [PATCH 5/5] i2c: stm32f7: indicate the address being accessed on errors
From: Pierre Yves MORDRET <pierre-yves.mordret@foss.st.com>
Date: 2021-02-05 23:37:06
Also in:
linux-arm-kernel, linux-i2c, lkml
Hello all Looks good to me Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@foss.st.com> Regards On 2/5/21 9:51 AM, Alain Volmat wrote:
quoted hunk ↗ jump to hunk
To help debugging issues, add the address of the slave being accessed when getting an error. Signed-off-by: Alain Volmat <alain.volmat@foss.st.com> --- drivers/i2c/busses/i2c-stm32f7.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c index f77cd6512a86..ef642fe1eb2c 100644 --- a/drivers/i2c/busses/i2c-stm32f7.c +++ b/drivers/i2c/busses/i2c-stm32f7.c@@ -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; }
-- -- ~ Py MORDRET --