V4L/DVB (4275): The FE_SET_FRONTEND_TUNE_MODE ioctl always returns EOPNOTSUPP

When someone added the front-end ioctl FE_SET_FRONTEND_TUNE_MODE, they
forgot to set the return value to 0.  It always returns EOPNOTSUPP,
causing problems for programmers who actually check for error conditions.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index 5e8bb41a088b56c59bcb7f16c8f36264e1d54374..1dc7d29a3bb90759f9f97956df26285e9c537035 100644 (file)
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -975,6 +975,7 @@ static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
 
        case FE_SET_FRONTEND_TUNE_MODE:
                fepriv->tune_mode_flags = (unsigned long) parg;
+               err = 0;
                break;
        };