V4L/DVB (9335): videobuf: split unregister bus creating self-contained frontend de-allocator
This creates a self contained frontend de-allocator for the instances where an adapter has not been registered yet frontend de-allocation may be required. Signed-off-by: Darron Broad <darron@kewl.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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0fcd488d8d
Коммит
878595f6e7
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@ -296,29 +296,7 @@ EXPORT_SYMBOL(videobuf_dvb_register_bus);
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void videobuf_dvb_unregister_bus(struct videobuf_dvb_frontends *f)
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{
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struct list_head *list, *q;
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struct videobuf_dvb_frontend *fe;
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mutex_lock(&f->lock);
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list_for_each_safe(list, q, &f->felist) {
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fe = list_entry(list, struct videobuf_dvb_frontend, felist);
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if (fe->dvb.net.dvbdev) {
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dvb_net_release(&fe->dvb.net);
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fe->dvb.demux.dmx.remove_frontend(&fe->dvb.demux.dmx,
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&fe->dvb.fe_mem);
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fe->dvb.demux.dmx.remove_frontend(&fe->dvb.demux.dmx,
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&fe->dvb.fe_hw);
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dvb_dmxdev_release(&fe->dvb.dmxdev);
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dvb_dmx_release(&fe->dvb.demux);
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dvb_unregister_frontend(fe->dvb.frontend);
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}
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if (fe->dvb.frontend)
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/* always allocated, may have been reset */
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dvb_frontend_detach(fe->dvb.frontend);
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list_del(list);
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kfree(fe);
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}
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mutex_unlock(&f->lock);
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videobuf_dvb_dealloc_frontends(f);
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dvb_unregister_adapter(&f->adapter);
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}
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@ -389,3 +367,31 @@ fail_alloc:
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return fe;
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}
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EXPORT_SYMBOL(videobuf_dvb_alloc_frontend);
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void videobuf_dvb_dealloc_frontends(struct videobuf_dvb_frontends *f)
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{
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struct list_head *list, *q;
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struct videobuf_dvb_frontend *fe;
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mutex_lock(&f->lock);
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list_for_each_safe(list, q, &f->felist) {
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fe = list_entry(list, struct videobuf_dvb_frontend, felist);
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if (fe->dvb.net.dvbdev) {
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dvb_net_release(&fe->dvb.net);
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fe->dvb.demux.dmx.remove_frontend(&fe->dvb.demux.dmx,
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&fe->dvb.fe_mem);
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fe->dvb.demux.dmx.remove_frontend(&fe->dvb.demux.dmx,
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&fe->dvb.fe_hw);
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dvb_dmxdev_release(&fe->dvb.dmxdev);
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dvb_dmx_release(&fe->dvb.demux);
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dvb_unregister_frontend(fe->dvb.frontend);
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}
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if (fe->dvb.frontend)
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/* always allocated, may have been reset */
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dvb_frontend_detach(fe->dvb.frontend);
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list_del(list); /* remove list entry */
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kfree(fe); /* free frontend allocation */
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}
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mutex_unlock(&f->lock);
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}
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EXPORT_SYMBOL(videobuf_dvb_dealloc_frontends);
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@ -47,6 +47,7 @@ int videobuf_dvb_register_bus(struct videobuf_dvb_frontends *f,
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void videobuf_dvb_unregister_bus(struct videobuf_dvb_frontends *f);
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struct videobuf_dvb_frontend * videobuf_dvb_alloc_frontend(struct videobuf_dvb_frontends *f, int id);
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void videobuf_dvb_dealloc_frontends(struct videobuf_dvb_frontends *f);
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struct videobuf_dvb_frontend * videobuf_dvb_get_frontend(struct videobuf_dvb_frontends *f, int id);
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int videobuf_dvb_find_frontend(struct videobuf_dvb_frontends *f, struct dvb_frontend *p);
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