V4L/DVB (8422): cs5345: fix incorrect mask with VIDIOC_DBG_S_REGISTER

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/cs5345.c b/drivers/media/video/cs5345.c
index 1c3fa3a..61d14d2 100644
--- a/drivers/media/video/cs5345.c
+++ b/drivers/media/video/cs5345.c
@@ -111,7 +111,7 @@
 		if (cmd == VIDIOC_DBG_G_REGISTER)
 			reg->val = cs5345_read(client, reg->reg & 0x1f);
 		else
-			cs5345_write(client, reg->reg & 0x1f, reg->val & 0x1f);
+			cs5345_write(client, reg->reg & 0x1f, reg->val & 0xff);
 		break;
 	}
 #endif