1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/media/dvb-frontends/stb0899_drv.h b/drivers/media/dvb-frontends/stb0899_drv.h
index 1ddad6a8cc07..139264d19263 100644
--- a/drivers/media/dvb-frontends/stb0899_drv.h
+++ b/drivers/media/dvb-frontends/stb0899_drv.h
@@ -45,8 +45,8 @@ struct stb0899_s2_reg {
 };
 
 enum stb0899_inversion {
-        IQ_SWAP_OFF     = 0,
-        IQ_SWAP_ON,
+        IQ_SWAP_OFF     = +1, /* inversion affects the sign of e. g. */
+        IQ_SWAP_ON      = -1, /* the derotator frequency register    */
 };
 
 #define STB0899_GPIO00                          0xf140