GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-24 07:31:41 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

genetlink: introduce and use genl_family_attrbuf()

Browse source 
This helper function allows family implementations to access
their family's attrbuf. This gets rid of the attrbuf usage
in families, and also adds locking validation, since it's not
valid to use the attrbuf with parallel_ops or outside of the
dumpit callback.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johannes Berg 2016-10-24 14:40:01 +02:00 • committed by David S. Miller
parent 4fe77d82ef
commit c90c39dab3
6 changed files with 55 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

9
net/nfc/netlink.c
View file

@ -120,21 +120,20 @@ nla_put_failure:
static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb)
{
struct nlattr **attrbuf = genl_family_attrbuf(&nfc_genl_family);
struct nfc_dev *dev;
int rc;
u32 idx;
rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize,
nfc_genl_family.attrbuf,
nfc_genl_family.maxattr,
nfc_genl_policy);
attrbuf, nfc_genl_family.maxattr, nfc_genl_policy);
if (rc < 0)
return ERR_PTR(rc);
if (!nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX])
if (!attrbuf[NFC_ATTR_DEVICE_INDEX])
return ERR_PTR(-EINVAL);
idx = nla_get_u32(nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]);
idx = nla_get_u32(attrbuf[NFC_ATTR_DEVICE_INDEX]);
dev = nfc_get_device(idx);
if (!dev)