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| author | Nikolay Burykin <burikin@ivk.ru> | 2023-01-10 10:09:00 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2023-07-14 09:14:09 +0200 |
| commit | 4aaa96b59df5fac41ba891969df6b092061ea9d7 (patch) | |
| tree | f3642c1da7aebe47adf24ea947bc1dbf937a2c99 /drivers | |
| parent | 92cbf865ea2e0f2997ff97815c6db182eb23df1b (diff) | |
| download | linux-stable-4aaa96b59df5fac41ba891969df6b092061ea9d7.tar.gz linux-stable-4aaa96b59df5fac41ba891969df6b092061ea9d7.tar.bz2 linux-stable-4aaa96b59df5fac41ba891969df6b092061ea9d7.zip | |
media: pci: cx23885: fix error handling for cx23885 ATSC boards
After having been assigned to NULL value at cx23885-dvb.c:1202,
pointer '0' is dereferenced at cx23885-dvb.c:2469.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Nikolay Burykin <burikin@ivk.ru>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/pci/cx23885/cx23885-dvb.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/drivers/media/pci/cx23885/cx23885-dvb.c b/drivers/media/pci/cx23885/cx23885-dvb.c index 8fd5b6ef2428..7551ca4a322a 100644 --- a/drivers/media/pci/cx23885/cx23885-dvb.c +++ b/drivers/media/pci/cx23885/cx23885-dvb.c @@ -2459,16 +2459,10 @@ static int dvb_register(struct cx23885_tsport *port) request_module("%s", info.type); client_tuner = i2c_new_client_device(&dev->i2c_bus[1].i2c_adap, &info); if (!i2c_client_has_driver(client_tuner)) { - module_put(client_demod->dev.driver->owner); - i2c_unregister_device(client_demod); - port->i2c_client_demod = NULL; goto frontend_detach; } if (!try_module_get(client_tuner->dev.driver->owner)) { i2c_unregister_device(client_tuner); - module_put(client_demod->dev.driver->owner); - i2c_unregister_device(client_demod); - port->i2c_client_demod = NULL; goto frontend_detach; } port->i2c_client_tuner = client_tuner; @@ -2505,16 +2499,10 @@ static int dvb_register(struct cx23885_tsport *port) request_module("%s", info.type); client_tuner = i2c_new_client_device(&dev->i2c_bus[1].i2c_adap, &info); if (!i2c_client_has_driver(client_tuner)) { - module_put(client_demod->dev.driver->owner); - i2c_unregister_device(client_demod); - port->i2c_client_demod = NULL; goto frontend_detach; } if (!try_module_get(client_tuner->dev.driver->owner)) { i2c_unregister_device(client_tuner); - module_put(client_demod->dev.driver->owner); - i2c_unregister_device(client_demod); - port->i2c_client_demod = NULL; goto frontend_detach; } port->i2c_client_tuner = client_tuner; |