[PATCH 1/5] misc: c2port: use kobj_to_dev()

[Geliang Tang]

Use kobj_to_dev() instead of open-coding it.

Signed-off-by: Geliang Tang <geliangtang@xxxxxxx>
---
 drivers/misc/c2port/core.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/misc/c2port/core.c b/drivers/misc/c2port/core.c
index cc8645b..1922cb8 100644
--- a/drivers/misc/c2port/core.c
+++ b/drivers/misc/c2port/core.c
@@ -721,9 +721,7 @@ static ssize_t c2port_read_flash_data(struct file *filp, struct kobject *kobj,
 				struct bin_attribute *attr,
 				char *buffer, loff_t offset, size_t count)
 {
-	struct c2port_device *c2dev =
-			dev_get_drvdata(container_of(kobj,
-						struct device, kobj));
+	struct c2port_device *c2dev = dev_get_drvdata(kobj_to_dev(kobj));
 	ssize_t ret;
 
 	/* Check the device and flash access status */
@@ -838,9 +836,7 @@ static ssize_t c2port_write_flash_data(struct file *filp, struct kobject *kobj,
 				struct bin_attribute *attr,
 				char *buffer, loff_t offset, size_t count)
 {
-	struct c2port_device *c2dev =
-			dev_get_drvdata(container_of(kobj,
-						struct device, kobj));
+	struct c2port_device *c2dev = dev_get_drvdata(kobj_to_dev(kobj));
 	int ret;
 
 	/* Check the device access status */
-- 
2.5.0