[PATCH AUTOSEL 4.14 02/13] media: budget-core: Improve exception handling in budget_register()

From: Sasha Levin
Date: Wed Aug 19 2020 - 20:07:00 EST


From: Chuhong Yuan <hslester96@xxxxxxxxx>

[ Upstream commit fc0456458df8b3421dba2a5508cd817fbc20ea71 ]

budget_register() has no error handling after its failure.
Add the missed undo functions for error handling to fix it.

Signed-off-by: Chuhong Yuan <hslester96@xxxxxxxxx>
Signed-off-by: Sean Young <sean@xxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/media/pci/ttpci/budget-core.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/media/pci/ttpci/budget-core.c b/drivers/media/pci/ttpci/budget-core.c
index 97499b2af7144..20524376b83be 100644
--- a/drivers/media/pci/ttpci/budget-core.c
+++ b/drivers/media/pci/ttpci/budget-core.c
@@ -383,20 +383,25 @@ static int budget_register(struct budget *budget)
ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);

if (ret < 0)
- return ret;
+ goto err_release_dmx;

budget->mem_frontend.source = DMX_MEMORY_FE;
ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
if (ret < 0)
- return ret;
+ goto err_release_dmx;

ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
if (ret < 0)
- return ret;
+ goto err_release_dmx;

dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);

return 0;
+
+err_release_dmx:
+ dvb_dmxdev_release(&budget->dmxdev);
+ dvb_dmx_release(&budget->demux);
+ return ret;
}

static void budget_unregister(struct budget *budget)
--
2.25.1