[media] media: dvb-core: Don't force CAN_INVERSION_AUTO in oneshot mode

[ Upstream commit c9d57de6103e343f2d4e04ea8d9e417e10a24da7 ]

When in FE_TUNE_MODE_ONESHOT the frontend must report
the actual capabilities so user can take appropriate
action.

With frontends that can't do auto inversion this is done
by dvb-core automatically so CAN_INVERSION_AUTO is valid.

However, when in FE_TUNE_MODE_ONESHOT this is not true.

So only set FE_CAN_INVERSION_AUTO in modes other than
FE_TUNE_MODE_ONESHOT

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c
index 882ca41..3ab8747 100644 (file)
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb-core/dvb_frontend.c
@@ -2333,9 +2333,9 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
                dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n",
                                 __func__, c->delivery_system, fe->ops.info.type);
 
-               /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
-                * do it, it is done for it. */
-               info->caps |= FE_CAN_INVERSION_AUTO;
+               /* Set CAN_INVERSION_AUTO bit on in other than oneshot mode */
+               if (!(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT))
+                       info->caps |= FE_CAN_INVERSION_AUTO;
                err = 0;
                break;
        }