linux-kernel - [PATCH v5 01/14] i2c: octeon: Increase retry default and use fixed timeout value

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Message-Id: <7e4c8b3007137d9cf9d5b8ab5d4c4c326dc2f1e0.1459352583.git.jglauber@cavium.com>
Date:	Thu, 31 Mar 2016 12:28:14 +0200
From:	Jan Glauber <jglauber@...ium.com>
To:	Wolfram Sang <wsa@...-dreams.de>
Cc:	linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
	David Daney <ddaney@...iumnetworks.com>,
	Jan Glauber <jglauber@...ium.com>
Subject: [PATCH v5 01/14] i2c: octeon: Increase retry default and use fixed timeout value

Convert the adapter timeout to 2 ms independently of depending on CONFIG_HZ.
CONFIG_HZ is 100 for MIPS Cavium-Octeon so the timeout value is not changed.

Also set retries to 5 to improve robustness.

Signed-off-by: Jan Glauber <jglauber@...ium.com>
---
 drivers/i2c/busses/i2c-octeon.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-octeon.c b/drivers/i2c/busses/i2c-octeon.c
index 46fb6c4..c4abf16 100644
--- a/drivers/i2c/busses/i2c-octeon.c
+++ b/drivers/i2c/busses/i2c-octeon.c
@@ -426,7 +426,6 @@ static struct i2c_adapter octeon_i2c_ops = {
 	.owner = THIS_MODULE,
 	.name = "OCTEON adapter",
 	.algo = &octeon_i2c_algo,
-	.timeout = HZ / 50,
 };
 
 /* calculate and set clock divisors */
@@ -553,6 +552,8 @@ static int octeon_i2c_probe(struct platform_device *pdev)
 	octeon_i2c_set_clock(i2c);
 
 	i2c->adap = octeon_i2c_ops;
+	i2c->adap.timeout = msecs_to_jiffies(2);
+	i2c->adap.retries = 5;
 	i2c->adap.dev.parent = &pdev->dev;
 	i2c->adap.dev.of_node = node;
 	i2c_set_adapdata(&i2c->adap, i2c);
-- 
1.9.1