From: Alan Douglas > Sent: 06 December 2018 12:01 > Hi, > > On 06 December 2018 10:21, Wen Yang wrote: > > kmemdup has implemented the function that kmalloc() + memcpy(). > > We prefer to kmemdup rather than code opened implementation. ... > > diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf- > test.c > > index 3e86fa3c7da3..6e42daa2a651 100644 > > --- a/drivers/pci/endpoint/functions/pci-epf-test.c > > +++ b/drivers/pci/endpoint/functions/pci-epf-test.c > > @@ -169,14 +169,12 @@ static int pci_epf_test_read(struct pci_epf_test *epf_test) > > goto err_addr; > > } > > > > - buf = kzalloc(reg->size, GFP_KERNEL); > > + buf = kzalloc(src_addr, reg->size, GFP_KERNEL); > Looks like a typo - kmemdup instead of kzalloc? Which is why making butter (churning) like this is mostly pointless. It is very easy to make silly mistakes. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)