drivers/media/dvb-core/dvb_frontend.c:861 dvb_frontend_thread() warn: inconsistent returns 'sem:&fepriv->sem'.

tree:   git://linuxtv.org/media_tree.git master
head:   8a56b6b5fd6ff92b7e27d870b803b11b751660c2
commit: 135f9be9194cf7778eb73594aa55791b229cf27c [348/454] [media] dvb_frontend: start media pipeline while thread is running

New smatch warnings:
drivers/media/dvb-core/dvb_frontend.c:861 dvb_frontend_thread() warn: inconsistent returns 'sem:&fepriv->sem'.
Locked on: line 719
Unlocked on: line 861

git remote add linuxtv-media git://linuxtv.org/media_tree.git
git remote update linuxtv-media
git checkout 135f9be9194cf7778eb73594aa55791b229cf27c vim +861 drivers/media/dvb-core/dvb_frontend.c

dea74869 drivers/media/dvb/dvb-core/dvb_frontend.c Patrick Boettcher   2006-05-14  845  				fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 drivers/media/dvb/dvb-core/dvb_frontend.c Andrew de Quincey   2006-04-18  846  		}
dea74869 drivers/media/dvb/dvb-core/dvb_frontend.c Patrick Boettcher   2006-05-14  847  		if (fe->ops.sleep)
dea74869 drivers/media/dvb/dvb-core/dvb_frontend.c Patrick Boettcher   2006-05-14  848  			fe->ops.sleep(fe);
^1da177e drivers/media/dvb/dvb-core/dvb_frontend.c Linus Torvalds      2005-04-16  849  	}
^1da177e drivers/media/dvb/dvb-core/dvb_frontend.c Linus Torvalds      2005-04-16  850  
8eec1429 drivers/media/dvb/dvb-core/dvb_frontend.c Herbert Poetzl      2007-02-08  851  	fepriv->thread = NULL;
e36309f5 drivers/media/dvb/dvb-core/dvb_frontend.c Matthieu CASTET     2010-05-05  852  	if (kthread_should_stop())
18ed2860 drivers/media/dvb-core/dvb_frontend.c     Shuah Khan          2014-07-12  853  		fe->exit = DVB_FE_DEVICE_REMOVED;
e36309f5 drivers/media/dvb/dvb-core/dvb_frontend.c Matthieu CASTET     2010-05-05  854  	else
18ed2860 drivers/media/dvb-core/dvb_frontend.c     Shuah Khan          2014-07-12  855  		fe->exit = DVB_FE_NO_EXIT;
^1da177e drivers/media/dvb/dvb-core/dvb_frontend.c Linus Torvalds      2005-04-16  856  	mb();
^1da177e drivers/media/dvb/dvb-core/dvb_frontend.c Linus Torvalds      2005-04-16  857  
6ae23224 drivers/media/dvb-core/dvb_frontend.c     Juergen Lock        2012-12-23  858  	if (semheld)
6ae23224 drivers/media/dvb-core/dvb_frontend.c     Juergen Lock        2012-12-23  859  		up(&fepriv->sem);
^1da177e drivers/media/dvb/dvb-core/dvb_frontend.c Linus Torvalds      2005-04-16  860  	dvb_frontend_wakeup(fe);
^1da177e drivers/media/dvb/dvb-core/dvb_frontend.c Linus Torvalds      2005-04-16 @861  	return 0;
^1da177e drivers/media/dvb/dvb-core/dvb_frontend.c Linus Torvalds      2005-04-16  862  }
^1da177e drivers/media/dvb/dvb-core/dvb_frontend.c Linus Torvalds      2005-04-16  863  
^1da177e drivers/media/dvb/dvb-core/dvb_frontend.c Linus Torvalds      2005-04-16  864  static void dvb_frontend_stop(struct dvb_frontend *fe)
^1da177e drivers/media/dvb/dvb-core/dvb_frontend.c Linus Torvalds      2005-04-16  865  {
0c53c70f drivers/media/dvb/dvb-core/dvb_frontend.c Johannes Stezenbach 2005-05-16  866  	struct dvb_frontend_private *fepriv = fe->frontend_priv;
^1da177e drivers/media/dvb/dvb-core/dvb_frontend.c Linus Torvalds      2005-04-16  867  
36bdbc3f drivers/media/dvb-core/dvb_frontend.c     Antti Palosaari     2012-08-15  868  	dev_dbg(fe->dvb->device, "%s:\n", __func__);
^1da177e drivers/media/dvb/dvb-core/dvb_frontend.c Linus Torvalds      2005-04-16  869  

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