V4L/DVB (8479): tveeprom/ivtv: fix usage of has_ir field

has_ir was set to and compared to -1 in several cases, even though it is
an u32. ivtv also contained a FIXME for an old kernel that could be
removed.

Thanks to Roel Kluin for creating an initial patch for this. Although
I chose a different solution here it did help in pointing out the problem.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/include/media/tveeprom.h b/include/media/tveeprom.h
index 5660ea24996b..a8ad75a9152a 100644
--- a/include/media/tveeprom.h
+++ b/include/media/tveeprom.h
@@ -3,7 +3,12 @@
 
 struct tveeprom {
 	u32 has_radio;
-	u32 has_ir;     /* bit 0: IR receiver present, bit 1: IR transmitter (blaster) present. -1 == unknown */
+	/* If has_ir == 0, then it is unknown what the IR capabilities are,
+	   otherwise:
+	   bit 0: 1 (= IR capabilities are known)
+	   bit 1: IR receiver present
+	   bit 2: IR transmitter (blaster) present */
+	u32 has_ir;
 	u32 has_MAC_address; /* 0: no MAC, 1: MAC present, 2: unknown */
 
 	u32 tuner_type;