linux-kernel - [PATCH v4 2/6] platform/chrome: cros_ec_sysfs: introduce to_cros_ec

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Date:   Fri, 23 Mar 2018 18:42:43 +0100
From:   Enric Balletbo i Serra <enric.balletbo@...labora.com>
To:     lee.jones@...aro.org, bleung@...omium.org
Cc:     groeck@...omium.org, andy.shevchenko@...il.com,
        kernel@...labora.com, gwendal@...omium.org,
        linux-kernel@...r.kernel.org, Olof Johansson <olof@...om.net>
Subject: [PATCH v4 2/6] platform/chrome: cros_ec_sysfs: introduce to_cros_ec_dev define.

Add a define to get the cros_ec_dev from device and use it.

Suggested-by: Andy Shevchenko <andy.shevchenko@...il.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
---

Changes in v4: None
Changes in v3:
- [2/6] Add Reviewed-by Andy Shevchenko

Changes in v2:
- [2/6] Add a new define to get the cros_ec_dev.

 drivers/platform/chrome/cros_ec_sysfs.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_sysfs.c b/drivers/platform/chrome/cros_ec_sysfs.c
index c03621e523a3..85bb9580439e 100644
--- a/drivers/platform/chrome/cros_ec_sysfs.c
+++ b/drivers/platform/chrome/cros_ec_sysfs.c
@@ -34,6 +34,8 @@
 #include <linux/types.h>
 #include <linux/uaccess.h>
 
+#define to_cros_ec_dev(dev)  container_of(dev, struct cros_ec_dev, class_dev)
+
 /* Accessor functions */
 
 static ssize_t show_ec_reboot(struct device *dev,
@@ -70,8 +72,7 @@ static ssize_t store_ec_reboot(struct device *dev,
 	int got_cmd = 0, offset = 0;
 	int i;
 	int ret;
-	struct cros_ec_dev *ec = container_of(dev,
-					      struct cros_ec_dev, class_dev);
+	struct cros_ec_dev *ec = to_cros_ec_dev(dev);
 
 	msg = kmalloc(sizeof(*msg) + sizeof(*param), GFP_KERNEL);
 	if (!msg)
@@ -132,8 +133,7 @@ static ssize_t show_ec_version(struct device *dev,
 	struct cros_ec_command *msg;
 	int ret;
 	int count = 0;
-	struct cros_ec_dev *ec = container_of(dev,
-					      struct cros_ec_dev, class_dev);
+	struct cros_ec_dev *ec = to_cros_ec_dev(dev);
 
 	msg = kmalloc(sizeof(*msg) + EC_HOST_PARAM_SIZE, GFP_KERNEL);
 	if (!msg)
@@ -231,8 +231,7 @@ static ssize_t show_ec_flashinfo(struct device *dev,
 	struct ec_response_flash_info *resp;
 	struct cros_ec_command *msg;
 	int ret;
-	struct cros_ec_dev *ec = container_of(dev,
-					      struct cros_ec_dev, class_dev);
+	struct cros_ec_dev *ec = to_cros_ec_dev(dev);
 
 	msg = kmalloc(sizeof(*msg) + sizeof(*resp), GFP_KERNEL);
 	if (!msg)
-- 
2.16.2