V4L/DVB (6708): pvrusb2: Expand comment in device attributes description

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/media/video/pvrusb2/pvrusb2-devattr.h b/drivers/media/video/pvrusb2/pvrusb2-devattr.h
index 830f27961e1..a9c3d99b602 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-devattr.h
+++ b/drivers/media/video/pvrusb2/pvrusb2-devattr.h
@@ -94,7 +94,13 @@ struct pvr2_device_desc {
         char flag_has_wm8775;
 
         /* Device has IR hardware that can be faked into looking like a
-           normal Hauppauge i2c IR receiver. */
+           normal Hauppauge i2c IR receiver.  This is currently very
+           specific to the 24xxx device, where Hauppauge had replaced their
+           'standard' I2C IR receiver with a bunch of FPGA logic controlled
+           directly via the FX2.  Turning this on tells the pvrusb2 driver
+           to virtualize the presence of the non-existant IR receiver chip and
+           implement the virtual receiver in terms of appropriate FX2
+           commands. */
         char flag_has_hauppauge_custom_ir;
 };