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staging: rtl8712: Restructure code for clarity

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Invert if statements to be able to return immediately in case of error,
and to avoid additional else branch.

Improve layout of function since there is more horizontal space now.

This was found using the following Coccinelle script:

@disable neg_if@
expression e,E;
statement S;
@@

*if (e)
    S
    else { return -E; }

    @disable neg_if@
    expression e,E;
    statement S;
    identifier l;
    @@

    *if
(e)
    S
    else
{ rc = -E; goto l; }

Signed-off-by: Narcisa Ana Maria Vasile <narcisaanamaria12@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Narcisa Ana Maria Vasile 2017-03-22 00:53:16 +02:00 committed by Greg Kroah-Hartman
parent 09e1aa1aaa
commit ad93cc9f15
1 changed files with 33 additions and 36 deletions
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69
drivers/staging/rtl8712/rtl871x_ioctl_linux.c
View file

@ -1406,44 +1406,41 @@ static int r8711_wx_get_rate(struct net_device *dev,
u16 mcs_rate = 0;
i = 0;
if (check_fwstate(pmlmepriv, _FW_LINKED | WIFI_ADHOC_MASTER_STATE)) {
p = r8712_get_ie(&pcur_bss->IEs[12],
_HT_CAPABILITY_IE_, &ht_ielen,
pcur_bss->IELength - 12);
if (p && ht_ielen > 0) {
ht_cap = true;
pht_capie = (struct ieee80211_ht_cap *)(p + 2);
memcpy(&mcs_rate, pht_capie->supp_mcs_set, 2);
bw_40MHz = (le16_to_cpu(pht_capie->cap_info) &
IEEE80211_HT_CAP_SUP_WIDTH) ? 1 : 0;
short_GI = (le16_to_cpu(pht_capie->cap_info) &
(IEEE80211_HT_CAP_SGI_20 |
IEEE80211_HT_CAP_SGI_40)) ? 1 : 0;
}
while ((pcur_bss->rates[i] != 0) &&
(pcur_bss->rates[i] != 0xFF)) {
rate = pcur_bss->rates[i] & 0x7F;
if (rate > max_rate)
max_rate = rate;
wrqu->bitrate.fixed = 0; /* no auto select */
wrqu->bitrate.value = rate * 500000;
i++;
}
if (ht_cap) {
if (mcs_rate & 0x8000 /* MCS15 */
&&
rf_type == RTL8712_RF_2T2R)
max_rate = (bw_40MHz) ? ((short_GI) ? 300 :
270) : ((short_GI) ? 144 : 130);
else /* default MCS7 */
max_rate = (bw_40MHz) ? ((short_GI) ? 150 :
135) : ((short_GI) ? 72 : 65);
max_rate *= 2; /* Mbps/2 */
}
wrqu->bitrate.value = max_rate * 500000;
} else {
if (!check_fwstate(pmlmepriv, _FW_LINKED | WIFI_ADHOC_MASTER_STATE))
return -ENOLINK;
p = r8712_get_ie(&pcur_bss->IEs[12], _HT_CAPABILITY_IE_, &ht_ielen,
pcur_bss->IELength - 12);
if (p && ht_ielen > 0) {
ht_cap = true;
pht_capie = (struct ieee80211_ht_cap *)(p + 2);
memcpy(&mcs_rate, pht_capie->supp_mcs_set, 2);
bw_40MHz = (le16_to_cpu(pht_capie->cap_info) &
IEEE80211_HT_CAP_SUP_WIDTH) ? 1 : 0;
short_GI = (le16_to_cpu(pht_capie->cap_info) &
(IEEE80211_HT_CAP_SGI_20 |
IEEE80211_HT_CAP_SGI_40)) ? 1 : 0;
}
while ((pcur_bss->rates[i] != 0) &&
(pcur_bss->rates[i] != 0xFF)) {
rate = pcur_bss->rates[i] & 0x7F;
if (rate > max_rate)
max_rate = rate;
wrqu->bitrate.fixed = 0; /* no auto select */
wrqu->bitrate.value = rate * 500000;
i++;
}
if (ht_cap) {
if (mcs_rate & 0x8000 /* MCS15 */
&&
rf_type == RTL8712_RF_2T2R)
max_rate = (bw_40MHz) ? ((short_GI) ? 300 : 270) :
((short_GI) ? 144 : 130);
else /* default MCS7 */
max_rate = (bw_40MHz) ? ((short_GI) ? 150 : 135) :
((short_GI) ? 72 : 65);
max_rate *= 2; /* Mbps/2 */
}
wrqu->bitrate.value = max_rate * 500000;
return 0;
}