Staging: comedi: comedi_fops.c: Fixed coding style issue

Fixed following checkpatch.pl warnings
WARNING: Prefer WRITE_ONCE(<FOO>, <BAR>) over ACCESS_ONCE(<FOO>) = <BAR>

WARNING: Prefer READ_ONCE(<FOO>) over ACCESS_ONCE(<FOO>)

Signed-off-by: Shyam Saini <mayhs11saini@gmail.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
index 629080f..4d87596 100644 (file)
--- a/drivers/staging/comedi/comedi_fops.c
+++ b/drivers/staging/comedi/comedi_fops.c
@@ -312,8 +312,8 @@ static void comedi_file_reset(struct file *file)
        }
        cfp->last_attached = dev->attached;
        cfp->last_detach_count = dev->detach_count;
-       ACCESS_ONCE(cfp->read_subdev) = read_s;
-       ACCESS_ONCE(cfp->write_subdev) = write_s;
+       WRITE_ONCE(cfp->read_subdev, read_s);
+       WRITE_ONCE(cfp->write_subdev, write_s);
 }
 
 static void comedi_file_check(struct file *file)
@@ -331,7 +331,7 @@ static struct comedi_subdevice *comedi_file_read_subdevice(struct file *file)
        struct comedi_file *cfp = file->private_data;
 
        comedi_file_check(file);
-       return ACCESS_ONCE(cfp->read_subdev);
+       return READ_ONCE(cfp->read_subdev);
 }
 
 static struct comedi_subdevice *comedi_file_write_subdevice(struct file *file)
@@ -339,7 +339,7 @@ static struct comedi_subdevice *comedi_file_write_subdevice(struct file *file)
        struct comedi_file *cfp = file->private_data;
 
        comedi_file_check(file);
-       return ACCESS_ONCE(cfp->write_subdev);
+       return READ_ONCE(cfp->write_subdev);
 }
 
 static int resize_async_buffer(struct comedi_device *dev,
@@ -1992,7 +1992,7 @@ static int do_setrsubd_ioctl(struct comedi_device *dev, unsigned long arg,
            !(s_old->async->cmd.flags & CMDF_WRITE))
                return -EBUSY;
 
-       ACCESS_ONCE(cfp->read_subdev) = s_new;
+       WRITE_ONCE(cfp->read_subdev, s_new);
        return 0;
 }
 
@@ -2034,7 +2034,7 @@ static int do_setwsubd_ioctl(struct comedi_device *dev, unsigned long arg,
            (s_old->async->cmd.flags & CMDF_WRITE))
                return -EBUSY;
 
-       ACCESS_ONCE(cfp->write_subdev) = s_new;
+       WRITE_ONCE(cfp->write_subdev, s_new);
        return 0;
 }