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networking: make skb_put & friends return void pointers

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It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.

Make these functions (skb_put, __skb_put and pskb_put) return void *
and remove all the casts across the tree, adding a (u8 *) cast only
where the unsigned char pointer was used directly, all done with the
following spatch:

    @@
    expression SKB, LEN;
    typedef u8;
    identifier fn = { skb_put, __skb_put };
    @@
    - *(fn(SKB, LEN))
    + *(u8 *)fn(SKB, LEN)

    @@
    expression E, SKB, LEN;
    identifier fn = { skb_put, __skb_put };
    type T;
    @@
    - E = ((T *)(fn(SKB, LEN)))
    + E = fn(SKB, LEN)

which actually doesn't cover pskb_put since there are only three
users overall.

A handful of stragglers were converted manually, notably a macro in
drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many
instances in net/bluetooth/hci_sock.c. In the former file, I also
had to fix one whitespace problem spatch introduced.

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
2017-06-16 14:29:21 +02:00
committed by David S. Miller
parent 59ae1d127a
commit 4df864c1d9
145 changed files with 486 additions and 547 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/net/wireless/intersil/p54/fwio.c
View File

@@ -206,7 +206,7 @@ static struct sk_buff *p54_alloc_skb(struct p54_common *priv, u16 hdr_flags,
return NULL;
skb_reserve(skb, priv->tx_hdr_len);
hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
hdr = skb_put(skb, sizeof(*hdr));
hdr->flags = cpu_to_le16(hdr_flags);
hdr->len = cpu_to_le16(payload_len);
hdr->type = cpu_to_le16(type);
@@ -236,8 +236,7 @@ int p54_download_eeprom(struct p54_common *priv, void *buf,
mutex_lock(&priv->eeprom_mutex);
priv->eeprom = buf;
eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
eeprom_hdr_size + len);
eeprom_hdr = skb_put(skb, eeprom_hdr_size + len);
if (priv->fw_var < 0x509) {
eeprom_hdr->v1.offset = cpu_to_le16(offset);
@@ -273,7 +272,7 @@ int p54_update_beacon_tim(struct p54_common *priv, u16 aid, bool set)
if (unlikely(!skb))
return -ENOMEM;
tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
tim = skb_put(skb, sizeof(*tim));
tim->count = 1;
tim->entry[0] = cpu_to_le16(set ? (aid | 0x8000) : aid);
p54_tx(priv, skb);
@@ -290,7 +289,7 @@ int p54_sta_unlock(struct p54_common *priv, u8 *addr)
if (unlikely(!skb))
return -ENOMEM;
sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
sta = skb_put(skb, sizeof(*sta));
memcpy(sta->addr, addr, ETH_ALEN);
p54_tx(priv, skb);
return 0;
@@ -310,7 +309,7 @@ int p54_tx_cancel(struct p54_common *priv, __le32 req_id)
if (unlikely(!skb))
return -ENOMEM;
cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
cancel = skb_put(skb, sizeof(*cancel));
cancel->req_id = req_id;
p54_tx(priv, skb);
return 0;
@@ -327,7 +326,7 @@ int p54_setup_mac(struct p54_common *priv)
if (!skb)
return -ENOMEM;
setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
setup = skb_put(skb, sizeof(*setup));
if (!(priv->hw->conf.flags & IEEE80211_CONF_IDLE)) {
switch (priv->mode) {
case NL80211_IFTYPE_STATION:
@@ -413,18 +412,18 @@ int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
if (!skb)
return -ENOMEM;
head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
head = skb_put(skb, sizeof(*head));
memset(head->scan_params, 0, sizeof(head->scan_params));
head->mode = cpu_to_le16(mode);
head->dwell = cpu_to_le16(dwell);
head->freq = freq;
if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
__le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
__le16 *pa_power_points = skb_put(skb, 2);
*pa_power_points = cpu_to_le16(0x0c);
}
iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
iq_autocal = skb_put(skb, sizeof(*iq_autocal));
for (i = 0; i < priv->iq_autocal_len; i++) {
if (priv->iq_autocal[i].freq != freq)
continue;
@@ -437,9 +436,9 @@ int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
goto err;
if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
body = (void *) skb_put(skb, sizeof(body->longbow));
body = skb_put(skb, sizeof(body->longbow));
else
body = (void *) skb_put(skb, sizeof(body->normal));
body = skb_put(skb, sizeof(body->normal));
for (i = 0; i < priv->output_limit->entries; i++) {
__le16 *entry_freq = (void *) (priv->output_limit->data +
@@ -500,25 +499,25 @@ int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
goto err;
if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
rate = (void *) skb_put(skb, sizeof(*rate));
rate = skb_put(skb, sizeof(*rate));
rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
for (i = 0; i < sizeof(rate->rts_rates); i++)
rate->rts_rates[i] = i;
}
rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
rssi = skb_put(skb, sizeof(*rssi));
rssi_data = p54_rssi_find(priv, le16_to_cpu(freq));
rssi->mul = cpu_to_le16(rssi_data->mul);
rssi->add = cpu_to_le16(rssi_data->add);
if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
/* Longbow frontend needs ever more */
rssi = (void *) skb_put(skb, sizeof(*rssi));
rssi = skb_put(skb, sizeof(*rssi));
rssi->mul = cpu_to_le16(rssi_data->longbow_unkn);
rssi->add = cpu_to_le16(rssi_data->longbow_unk2);
}
if (priv->fw_var >= 0x509) {
rate = (void *) skb_put(skb, sizeof(*rate));
rate = skb_put(skb, sizeof(*rate));
rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
for (i = 0; i < sizeof(rate->rts_rates); i++)
rate->rts_rates[i] = i;
@@ -550,7 +549,7 @@ int p54_set_leds(struct p54_common *priv)
if (unlikely(!skb))
return -ENOMEM;
led = (struct p54_led *) skb_put(skb, sizeof(*led));
led = skb_put(skb, sizeof(*led));
led->flags = cpu_to_le16(0x0003);
led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
led->delay[0] = cpu_to_le16(1);
@@ -570,7 +569,7 @@ int p54_set_edcf(struct p54_common *priv)
if (unlikely(!skb))
return -ENOMEM;
edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
edcf = skb_put(skb, sizeof(*edcf));
if (priv->use_short_slot) {
edcf->slottime = 9;
edcf->sifs = 0x10;
@@ -615,7 +614,7 @@ int p54_set_ps(struct p54_common *priv)
if (!skb)
return -ENOMEM;
psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
psm = skb_put(skb, sizeof(*psm));
psm->mode = cpu_to_le16(mode);
psm->aid = cpu_to_le16(priv->aid);
for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
@@ -644,7 +643,7 @@ int p54_init_xbow_synth(struct p54_common *priv)
if (unlikely(!skb))
return -ENOMEM;
xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
xbow = skb_put(skb, sizeof(*xbow));
xbow->magic1 = cpu_to_le16(0x1);
xbow->magic2 = cpu_to_le16(0x2);
xbow->freq = cpu_to_le16(5390);
@@ -664,7 +663,7 @@ int p54_upload_key(struct p54_common *priv, u8 algo, int slot, u8 idx, u8 len,
if (unlikely(!skb))
return -ENOMEM;
rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
rxkey = skb_put(skb, sizeof(*rxkey));
rxkey->entry = slot;
rxkey->key_id = idx;
rxkey->key_type = algo;
@@ -744,7 +743,7 @@ int p54_set_groupfilter(struct p54_common *priv)
if (!skb)
return -ENOMEM;
grp = (struct p54_group_address_table *)skb_put(skb, sizeof(*grp));
grp = skb_put(skb, sizeof(*grp));
on = !(priv->filter_flags & FIF_ALLMULTI) &&
(priv->mc_maclist_num > 0 &&