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net: nfc: remove inappropriate attrs check 

Revert "NFC: fix attrs checks in netlink interface"
This reverts commit 18917d5147.

Our checks found weird attrs present check in function
nfc_genl_dep_link_down() and nfc_genl_llc_get_params(), which are
introduced by commit 18917d5147 ("NFC: fix attrs checks in netlink
interface").

According to its message, it should add checks for functions
nfc_genl_deactivate_target() and nfc_genl_fw_download(). However, it
didn't do that. In fact, the expected checks are added by
(1) commit 385097a367 ("nfc: Ensure presence of required attributes in
the deactivate_target handler") and
(2) commit 280e3ebdaf ("nfc: Ensure presence of NFC_ATTR_FIRMWARE_NAME
attribute in nfc_genl_fw_download()"). Perhaps something went wrong.

Anyway, the attr NFC_ATTR_TARGET_INDEX is never accessed in callback
nfc_genl_dep_link_down() and same for NFC_ATTR_FIRMWARE_NAME and
nfc_genl_llc_get_params(). Thus, remove those checks.

Signed-off-by: Lin Ma <linma@zju.edu.cn>
Link: https://lore.kernel.org/r/20240410034846.167421-1-linma@zju.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lin Ma 2024-04-10 11:48:46 +08:00 committed by Jakub Kicinski
parent fbae0fa966
commit a799de0e59
1 changed files with 2 additions and 4 deletions
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6
net/nfc/netlink.c
View File

@ -969,8 +969,7 @@ static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info)
int rc;
u32 idx;
if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
!info->attrs[NFC_ATTR_TARGET_INDEX])
if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
return -EINVAL;
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
@ -1018,8 +1017,7 @@ static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info)
struct sk_buff *msg = NULL;
u32 idx;
if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
!info->attrs[NFC_ATTR_FIRMWARE_NAME])
if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
return -EINVAL;
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);