linux-kernel - [PATCH 2/5] i2c: tegra: If fifo flush fails return error

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Message-ID: <1472649758-5608-2-git-send-email-smohammed@nvidia.com>
Date:   Wed, 31 Aug 2016 18:52:35 +0530
From:   Shardar Shariff Md <smohammed@...dia.com>
To:     <smohammed@...dia.com>, <wsa@...-dreams.de>,
        <swarren@...dotorg.org>, <thierry.reding@...il.com>,
        <gnurou@...il.com>, <linux-i2c@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <jonathanh@...dia.com>
Subject: [PATCH 2/5] i2c: tegra: If fifo flush fails return error

During i2c controller initialization, when fifo flush fails return error
instead of returning the error during exit.

Signed-off-by: Shardar Shariff Md <smohammed@...dia.com>

---
Changes in v11:
- Fix smatch error for below warning
  tegra_i2c_init warn: unused return: err = tegra_i2c_flush_fifos()
---
---
 drivers/i2c/busses/i2c-tegra.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index e93c72a..07a39b7 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -494,6 +494,8 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
 	i2c_writel(i2c_dev, val, I2C_FIFO_CONTROL);
 
 	err = tegra_i2c_flush_fifos(i2c_dev);
+	if (err)
+		goto err;
 
 	if (i2c_dev->is_multimaster_mode && i2c_dev->hw->has_slcg_override_reg)
 		i2c_writel(i2c_dev, I2C_MST_CORE_CLKEN_OVR, I2C_CLKEN_OVERRIDE);
-- 
1.8.1.5