[media] em28xx: get rid of the dummy clock source

The v4l2 dummy clock has been added with commit fc5d0f8a8878
("V4L2: em28xx: register a V4L2 clock source") to be able to use the ov2640
soc_camera driver.
Since commit 46796cfcd346 ("ov2640: use standard clk and enable it") it is
no longer required.

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

3 files changed, 6 insertions, 31 deletions

diff --git a/drivers/media/usb/em28xx/em28xx-camera.c b/drivers/media/usb/em28xx/em28xx-camera.c
index f401e5aa1373..ee0fe1f13070 100644
--- a/drivers/media/usb/em28xx/em28xx-camera.c
+++ b/drivers/media/usb/em28xx/em28xx-camera.c
@@ -24,7 +24,6 @@
 #include <linux/i2c.h>
 #include <linux/usb.h>
 #include <media/i2c/mt9v011.h>
-#include <media/v4l2-clk.h>
 #include <media/v4l2-common.h>
 
 /* Possible i2c addresses of Micron sensors */
@@ -311,17 +310,9 @@ int em28xx_detect_sensor(struct em28xx *dev)
 
 int em28xx_init_camera(struct em28xx *dev)
 {
-        char clk_name[V4L2_CLK_NAME_SIZE];
         struct i2c_client *client = &dev->i2c_client[dev->def_i2c_bus];
         struct i2c_adapter *adap = &dev->i2c_adap[dev->def_i2c_bus];
         struct em28xx_v4l2 *v4l2 = dev->v4l2;
-        int ret = 0;
-
-        v4l2_clk_name_i2c(clk_name, sizeof(clk_name),
-                          i2c_adapter_id(adap), client->addr);
-        v4l2->clk = v4l2_clk_register_fixed(clk_name, -EINVAL);
-        if (IS_ERR(v4l2->clk))
-                return PTR_ERR(v4l2->clk);
 
         switch (dev->em28xx_sensor) {
         case EM28XX_MT9V011:
@@ -351,10 +342,8 @@ int em28xx_init_camera(struct em28xx *dev)
                 pdata.xtal = v4l2->sensor_xtal;
                 if (NULL ==
                     v4l2_i2c_new_subdev_board(&v4l2->v4l2_dev, adap,
-                                              &mt9v011_info, NULL)) {
-                        ret = -ENODEV;
-                        break;
-                }
+                                              &mt9v011_info, NULL))
+                        return -ENODEV;
                 /* probably means GRGB 16 bit bayer */
                 v4l2->vinmode = 0x0d;
                 v4l2->vinctl = 0x00;
@@ -410,10 +399,8 @@ int em28xx_init_camera(struct em28xx *dev)
                 subdev =
                      v4l2_i2c_new_subdev_board(&v4l2->v4l2_dev, adap,
                                                &ov2640_info, NULL);
-                if (NULL == subdev) {
-                        ret = -ENODEV;
-                        break;
-                }
+                if (subdev == NULL)
+                        return -ENODEV;
 
                 format.format.code = MEDIA_BUS_FMT_YUYV8_2X8;
                 format.format.width = 640;
@@ -430,14 +417,9 @@ int em28xx_init_camera(struct em28xx *dev)
         }
         case EM28XX_NOSENSOR:
         default:
-                ret = -EINVAL;
-        }
-
-        if (ret < 0) {
-                v4l2_clk_unregister_fixed(v4l2->clk);
-                v4l2->clk = NULL;
+                return -EINVAL;
         }
 
-        return ret;
+        return 0;
 }
 EXPORT_SYMBOL_GPL(em28xx_init_camera);
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c
index 8d93100334ea..3cbc3d4270a3 100644
--- a/drivers/media/usb/em28xx/em28xx-video.c
+++ b/drivers/media/usb/em28xx/em28xx-video.c
@@ -43,7 +43,6 @@
 #include <media/v4l2-common.h>
 #include <media/v4l2-ioctl.h>
 #include <media/v4l2-event.h>
-#include <media/v4l2-clk.h>
 #include <media/drv-intf/msp3400.h>
 #include <media/tuner.h>
 
@@ -2140,11 +2139,6 @@ static int em28xx_v4l2_fini(struct em28xx *dev)
         v4l2_ctrl_handler_free(&v4l2->ctrl_handler);
         v4l2_device_unregister(&v4l2->v4l2_dev);
 
-        if (v4l2->clk) {
-                v4l2_clk_unregister_fixed(v4l2->clk);
-                v4l2->clk = NULL;
-        }
-
         kref_put(&v4l2->ref, em28xx_free_v4l2);
 
         mutex_unlock(&dev->lock);
diff --git a/drivers/media/usb/em28xx/em28xx.h b/drivers/media/usb/em28xx/em28xx.h
index e9f379959fa5..e8d97d5ec161 100644
--- a/drivers/media/usb/em28xx/em28xx.h
+++ b/drivers/media/usb/em28xx/em28xx.h
@@ -510,7 +510,6 @@ struct em28xx_v4l2 {
 
         struct v4l2_device v4l2_dev;
         struct v4l2_ctrl_handler ctrl_handler;
-        struct v4l2_clk *clk;
 
         struct video_device vdev;
         struct video_device vbi_dev;