linux-kernel - [PATCH v1] i2c: qcom: Fix IRQ error misassignement

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Message-Id: <20201126145321.18269-1-robert.foss@linaro.org>
Date:   Thu, 26 Nov 2020 15:53:21 +0100
From:   Robert Foss <robert.foss@...aro.org>
To:     loic.poulain@...aro.org, robert.foss@...aro.org,
        linux-i2c@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1] i2c: qcom: Fix IRQ error misassignement

During cci_isr() errors read from register fields belonging to
i2c master1 are currently assigned to the status field belonging to
i2c master0. This patch corrects this error, and always assigns
master1 errors to the status field of master1.

Suggested-by: Loic Poulain <loic.poulain@...aro.org>
Signed-off-by: Robert Foss <robert.foss@...aro.org>
---
 drivers/i2c/busses/i2c-qcom-cci.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-qcom-cci.c b/drivers/i2c/busses/i2c-qcom-cci.c
index f13735beca58..1c259b5188de 100644
--- a/drivers/i2c/busses/i2c-qcom-cci.c
+++ b/drivers/i2c/busses/i2c-qcom-cci.c
@@ -194,9 +194,9 @@ static irqreturn_t cci_isr(int irq, void *dev)
 	if (unlikely(val & CCI_IRQ_STATUS_0_I2C_M1_ERROR)) {
 		if (val & CCI_IRQ_STATUS_0_I2C_M1_Q0_NACK_ERR ||
 			val & CCI_IRQ_STATUS_0_I2C_M1_Q1_NACK_ERR)
-			cci->master[0].status = -ENXIO;
+			cci->master[1].status = -ENXIO;
 		else
-			cci->master[0].status = -EIO;
+			cci->master[1].status = -EIO;
 
 		writel(CCI_HALT_REQ_I2C_M1_Q0Q1, cci->base + CCI_HALT_REQ);
 		ret = IRQ_HANDLED;
-- 
2.27.0