X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=include%2Fmedia%2Fv4l2-i2c-drv.h;h=efdc8bf27f87cc3aa09ca51e1e41459d1434d485;hb=572acc41274522b865440d0644d5f986e3c83755;hp=40ecef29801d3be1e5902cea4aee4a823e87f158;hpb=c203e45f069af47ca7623e4dcd8c00bfba2722e4;p=deliverable%2Flinux.git

diff --git a/include/media/v4l2-i2c-drv.h b/include/media/v4l2-i2c-drv.h
index 40ecef29801d..efdc8bf27f87 100644
--- a/include/media/v4l2-i2c-drv.h
+++ b/include/media/v4l2-i2c-drv.h
@@ -21,6 +21,17 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+/* NOTE: the full version of this header is in the v4l-dvb repository
+ * and allows v4l i2c drivers to be compiled on older kernels as well.
+ * The version of this header as it appears in the kernel is a stripped
+ * version (without all the backwards compatibility stuff) and so it
+ * looks a bit odd.
+ *
+ * If you look at the full version then you will understand the reason
+ * for introducing this header since you really don't want to have all
+ * the tricky backwards compatibility code in each and every i2c driver.
+ */
+
 #ifndef __V4L2_I2C_DRV_H__
 #define __V4L2_I2C_DRV_H__