Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Dmitry Osipenko <digetx@gmail.com>
To:     Thierry Reding <thierry.reding@gmail.com>,
        Jonathan Hunter <jonathanh@nvidia.com>,
        Laxman Dewangan <ldewangan@nvidia.com>,
        Wolfram Sang <wsa@the-dreams.de>,
        =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= <mirq-linux@rere.qmqm.pl>,
        Andy Shevchenko <andy.shevchenko@gmail.com>
Cc:     linux-i2c@vger.kernel.org, linux-tegra@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH v7 28/34] i2c: tegra: Consolidate error handling in tegra_i2c_xfer_msg()
Date:   Wed,  9 Sep 2020 01:40:00 +0300
Message-Id: <20200908224006.25636-29-digetx@gmail.com>
In-Reply-To: <20200908224006.25636-1-digetx@gmail.com>
References: <20200908224006.25636-1-digetx@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Consolidate error handling in tegra_i2c_xfer_msg() into a common code
path in order to make code cleaner.

Reviewed-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/i2c/busses/i2c-tegra.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index fe672cfebe12..ac40c87f1c21 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -1293,8 +1293,8 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
 
 		if (!time_left && !completion_done(&i2c_dev->dma_complete)) {
 			dev_err(i2c_dev->dev, "DMA transfer timeout\n");
-			tegra_i2c_init(i2c_dev);
-			return -ETIMEDOUT;
+			err = -ETIMEDOUT;
+			goto reset_hardware;
 		}
 
 		if (i2c_dev->msg_read && i2c_dev->msg_err == I2C_ERR_NONE) {
@@ -1314,8 +1314,8 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
 
 	if (time_left == 0) {
 		dev_err(i2c_dev->dev, "i2c transfer timed out\n");
-		tegra_i2c_init(i2c_dev);
-		return -ETIMEDOUT;
+		err = -ETIMEDOUT;
+		goto reset_hardware;
 	}
 
 	dev_dbg(i2c_dev->dev, "transfer complete: %lu %d %d\n",
@@ -1329,6 +1329,11 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
 		return err;
 
 	return 0;
+
+reset_hardware:
+	tegra_i2c_init(i2c_dev);
+
+	return err;
 }
 
 static int tegra_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[],
-- 
2.27.0