linux-kernel - [PATCH] i2c: qcom-geni: Fix return value for master

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Date:   Wed, 9 Feb 2022 21:03:56 +0000
From:   <jorcrous@...zon.com>
To:     <linux-arm-msm@...r.kernel.org>
CC:     Jordan Crouse <jorcrous@...zon.com>,
        Akash Asthana <akashast@...eaurora.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mukesh Savaliya <msavaliy@...eaurora.org>,
        Vinod Koul <vkoul@...nel.org>, <linux-i2c@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] i2c: qcom-geni: Fix return value for master_xfer

From: Jordan Crouse <jorcrous@...zon.com>

The master_xfer function is supposed to return the number of messages that
were processed. Both  geni_i2c_gpi_xfer and geni_i2c_fifo_xfer are
returning 0 which is being interpeted as a error in the upper layers.

Fixes: 8133682618cb ("i2c: qcom-geni: Add support for GPI DMA")
Signed-off-by: Jordan Crouse <jorcrous@...zon.com>
---

 drivers/i2c/busses/i2c-qcom-geni.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
index c5345f3421a8..e008161e1a67 100644
--- a/drivers/i2c/busses/i2c-qcom-geni.c
+++ b/drivers/i2c/busses/i2c-qcom-geni.c
@@ -619,7 +619,7 @@ static int geni_i2c_gpi_xfer(struct geni_i2c_dev *gi2c, struct i2c_msg msgs[], i
 		geni_i2c_gpi_unmap(gi2c, &msgs[i], tx_buf, tx_addr, rx_buf, rx_addr);
 	}
 
-	return 0;
+	return num;
 
 err:
 	dmaengine_terminate_sync(gi2c->rx_c);
@@ -645,10 +645,10 @@ static int geni_i2c_fifo_xfer(struct geni_i2c_dev *gi2c,
 			ret = geni_i2c_tx_one_msg(gi2c, &msgs[i], m_param);
 
 		if (ret)
-			break;
+			return ret;
 	}
 
-	return ret;
+	return num;
 }
 
 static int geni_i2c_xfer(struct i2c_adapter *adap,
-- 
2.32.0