V4L/DVB (9193): stk-webcam: minor cleanup

This patch:
1) removes the unnecessary kref.h include file
2) removes unnecessary pointer validation from read and poll routines.
(Neither poll nor read may be called unless a call to open succeeds. A
successful call to open will always set the file private_data pointer.
Verifying that it is not null is therefore unnecessary. The associated
release and mmap calls currently ignore this check.)
3) adds a space to syslog output.
4) removes an unused function prototype.

Signed-off-by: David Ellingsworth <david@identd.dyndns.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 1 insertions, 8 deletions

diff --git a/drivers/media/video/stk-webcam.c b/drivers/media/video/stk-webcam.c
index db69bc5556d6..f1d5b3eaa192 100644
--- a/drivers/media/video/stk-webcam.c
+++ b/drivers/media/video/stk-webcam.c
@@ -27,7 +27,6 @@
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/slab.h>
-#include <linux/kref.h>
 
 #include <linux/usb.h>
 #include <linux/mm.h>
@@ -714,9 +713,6 @@ static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
         struct stk_sio_buffer *sbuf;
         struct stk_camera *dev = fp->private_data;
 
-        if (dev == NULL)
-                return -EIO;
-
         if (!is_present(dev))
                 return -EIO;
         if (dev->owner && dev->owner != fp)
@@ -773,9 +769,6 @@ static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait)
 {
         struct stk_camera *dev = fp->private_data;
 
-        if (dev == NULL)
-                return -ENODEV;
-
         poll_wait(fp, &dev->wait_frame, wait);
 
         if (!is_present(dev))
@@ -1436,7 +1429,7 @@ static void stk_camera_disconnect(struct usb_interface *interface)
         wake_up_interruptible(&dev->wait_frame);
         stk_remove_sysfs_files(&dev->vdev);
 
-        STK_INFO("Syntek USB2.0 Camera release resources"
+        STK_INFO("Syntek USB2.0 Camera release resources "
                 "video device /dev/video%d\n", dev->vdev.minor);
 
         video_unregister_device(&dev->vdev);