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| author | Arnd Bergmann <arnd@arndb.de> | 2020-05-01 00:30:45 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2020-05-06 11:43:14 +0300 |
| commit | 08afb432c996e34e7047110a4d8c6979b8bd2b19 (patch) | |
| tree | 170f27d4a81e0adafa91bf9afa93e93c45fd4f1a /drivers/net | |
| parent | 1b56bed20212390432541c7a54e5a70561809293 (diff) | |
| download | linux-08afb432c996e34e7047110a4d8c6979b8bd2b19.tar.xz | |
mwifiex: avoid -Wstringop-overflow warning
gcc-10 reports a warning for mwifiex_cmd_802_11_key_material_v1:
drivers/net/wireless/marvell/mwifiex/sta_cmd.c: In function 'mwifiex_cmd_802_11_key_material_v1':
cc1: warning: writing 16 bytes into a region of size 0 [-Wstringop-overflow=]
In file included from drivers/net/wireless/marvell/mwifiex/sta_cmd.c:23:
drivers/net/wireless/marvell/mwifiex/fw.h:993:9: note: at offset 0 to object 'action' with size 2 declared here
993 | __le16 action;
| ^~~~~~
As the warning makes no sense, I reported it as a bug for gcc. In the
meantime using a temporary pointer for the key data makes the code easier
to read and stops the warning.
Fixes: 5e6e3a92b9a4 ("wireless: mwifiex: initial commit for Marvell mwifiex driver")
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94881
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200430213101.135134-4-arnd@arndb.de
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/marvell/mwifiex/sta_cmd.c | 39 |
1 files changed, 16 insertions, 23 deletions
diff --git a/drivers/net/wireless/marvell/mwifiex/sta_cmd.c b/drivers/net/wireless/marvell/mwifiex/sta_cmd.c index 0bd93f26bd7f..8bd355d7974e 100644 --- a/drivers/net/wireless/marvell/mwifiex/sta_cmd.c +++ b/drivers/net/wireless/marvell/mwifiex/sta_cmd.c @@ -853,43 +853,36 @@ mwifiex_cmd_802_11_key_material_v1(struct mwifiex_private *priv, memset(&key_material->key_param_set, 0, sizeof(struct mwifiex_ie_type_key_param_set)); if (enc_key->is_wapi_key) { + struct mwifiex_ie_type_key_param_set *set; + mwifiex_dbg(priv->adapter, INFO, "info: Set WAPI Key\n"); - key_material->key_param_set.key_type_id = - cpu_to_le16(KEY_TYPE_ID_WAPI); + set = &key_material->key_param_set; + set->key_type_id = cpu_to_le16(KEY_TYPE_ID_WAPI); if (cmd_oid == KEY_INFO_ENABLED) - key_material->key_param_set.key_info = - cpu_to_le16(KEY_ENABLED); + set->key_info = cpu_to_le16(KEY_ENABLED); else - key_material->key_param_set.key_info = - cpu_to_le16(!KEY_ENABLED); + set->key_info = cpu_to_le16(!KEY_ENABLED); - key_material->key_param_set.key[0] = enc_key->key_index; + set->key[0] = enc_key->key_index; if (!priv->sec_info.wapi_key_on) - key_material->key_param_set.key[1] = 1; + set->key[1] = 1; else /* set 0 when re-key */ - key_material->key_param_set.key[1] = 0; + set->key[1] = 0; if (!is_broadcast_ether_addr(enc_key->mac_addr)) { /* WAPI pairwise key: unicast */ - key_material->key_param_set.key_info |= - cpu_to_le16(KEY_UNICAST); + set->key_info |= cpu_to_le16(KEY_UNICAST); } else { /* WAPI group key: multicast */ - key_material->key_param_set.key_info |= - cpu_to_le16(KEY_MCAST); + set->key_info |= cpu_to_le16(KEY_MCAST); priv->sec_info.wapi_key_on = true; } - key_material->key_param_set.type = - cpu_to_le16(TLV_TYPE_KEY_MATERIAL); - key_material->key_param_set.key_len = - cpu_to_le16(WAPI_KEY_LEN); - memcpy(&key_material->key_param_set.key[2], - enc_key->key_material, enc_key->key_len); - memcpy(&key_material->key_param_set.key[2 + enc_key->key_len], - enc_key->pn, PN_LEN); - key_material->key_param_set.length = - cpu_to_le16(WAPI_KEY_LEN + KEYPARAMSET_FIXED_LEN); + set->type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL); + set->key_len = cpu_to_le16(WAPI_KEY_LEN); + memcpy(&set->key[2], enc_key->key_material, enc_key->key_len); + memcpy(&set->key[2 + enc_key->key_len], enc_key->pn, PN_LEN); + set->length = cpu_to_le16(WAPI_KEY_LEN + KEYPARAMSET_FIXED_LEN); key_param_len = (WAPI_KEY_LEN + KEYPARAMSET_FIXED_LEN) + sizeof(struct mwifiex_ie_types_header); |