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media: cx23885: check allocation return 

[ Upstream commit a3d7f22ef3 ]

Checking of kmalloc() seems to have been committed - as
cx23885_dvb_register() is checking for != 0 return, returning
-ENOMEM should be fine here.  While at it address the coccicheck
suggestion to move to kmemdup rather than using kmalloc+memcpy.

Fixes: 46b21bbaa8 ("[media] Add support for DViCO FusionHDTV DVB-T Dual Express2")

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Nicholas Mc Guire 2019-01-19 22:52:23 -05:00 committed by Greg Kroah-Hartman
parent e53ee1dce1
commit 4ccb5367cd
1 changed files with 3 additions and 2 deletions
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5
drivers/media/pci/cx23885/cx23885-dvb.c
View File

@ -1471,8 +1471,9 @@ static int dvb_register(struct cx23885_tsport *port)
if (fe0->dvb.frontend != NULL) {
struct i2c_adapter *tun_i2c;
fe0->dvb.frontend->sec_priv = kmalloc(sizeof(dib7000p_ops), GFP_KERNEL);
memcpy(fe0->dvb.frontend->sec_priv, &dib7000p_ops, sizeof(dib7000p_ops));
fe0->dvb.frontend->sec_priv = kmemdup(&dib7000p_ops, sizeof(dib7000p_ops), GFP_KERNEL);
if (!fe0->dvb.frontend->sec_priv)
return -ENOMEM;
tun_i2c = dib7000p_ops.get_i2c_master(fe0->dvb.frontend, DIBX000_I2C_INTERFACE_TUNER, 1);
if (!dvb_attach(dib0070_attach, fe0->dvb.frontend, tun_i2c, &dib7070p_dib0070_config))
return -ENODEV;