rtc-dev: no need to convert file->private_data to rtc device

In rtc-dev.c, when a rtc device is opened, file->private_data is already
attached with the rtc device pointer, so there is no need to call
to_rtc_device() to convert file->private_data to a rtc device pointer.

Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Mark Zhan <rongkai.zhan@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index 362400d..87d4add 100644 (file)
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -142,7 +142,7 @@ static int set_uie(struct rtc_device *rtc)
 static ssize_t
 rtc_dev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 {
-       struct rtc_device *rtc = to_rtc_device(file->private_data);
+       struct rtc_device *rtc = file->private_data;
 
        DECLARE_WAITQUEUE(wait, current);
        unsigned long data;
@@ -196,7 +196,7 @@ rtc_dev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 
 static unsigned int rtc_dev_poll(struct file *file, poll_table *wait)
 {
-       struct rtc_device *rtc = to_rtc_device(file->private_data);
+       struct rtc_device *rtc = file->private_data;
        unsigned long data;
 
        poll_wait(file, &rtc->irq_queue, wait);
@@ -396,7 +396,7 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
 
 static int rtc_dev_release(struct inode *inode, struct file *file)
 {
-       struct rtc_device *rtc = to_rtc_device(file->private_data);
+       struct rtc_device *rtc = file->private_data;
 
 #ifdef CONFIG_RTC_INTF_DEV_UIE_EMUL
        clear_uie(rtc);
@@ -410,7 +410,7 @@ static int rtc_dev_release(struct inode *inode, struct file *file)
 
 static int rtc_dev_fasync(int fd, struct file *file, int on)
 {
-       struct rtc_device *rtc = to_rtc_device(file->private_data);
+       struct rtc_device *rtc = file->private_data;
        return fasync_helper(fd, file, on, &rtc->async_queue);
 }