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mwifiex: send regulatory domain info to firmware only if alpha2 changed 

On cfg80211 regulatory domain change, drivers gets alpha2 country
code or "00" in driver's notification handler.

In most cases, the pattern will be US, 00, US, 00, US, 00, US, ...
There is no need to send domain info to firmware in case of "00" or
with the same alpha2 country code.

Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bing Zhao 2013-12-13 18:32:59 -08:00 committed by John W. Linville
parent 935d00ccf7
commit dd4a9ac05c
2 changed files with 21 additions and 6 deletions
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17
drivers/net/wireless/mwifiex/cfg80211.c
View File

@ -542,20 +542,27 @@ static void mwifiex_reg_notifier(struct wiphy *wiphy,
wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for %c%c\n",
request->alpha2[0], request->alpha2[1]);
memcpy(adapter->country_code, request->alpha2, sizeof(request->alpha2));
switch (request->initiator) {
case NL80211_REGDOM_SET_BY_DRIVER:
case NL80211_REGDOM_SET_BY_CORE:
case NL80211_REGDOM_SET_BY_USER:
break;
/* Todo: apply driver specific changes in channel flags based
on the request initiator if necessary. */
case NL80211_REGDOM_SET_BY_COUNTRY_IE:
break;
default:
wiphy_err(wiphy, "unknown regdom initiator: %d\n",
request->initiator);
return;
}
/* Don't send world or same regdom info to firmware */
if (strncmp(request->alpha2, "00", 2) &&
strncmp(request->alpha2, adapter->country_code,
sizeof(request->alpha2))) {
memcpy(adapter->country_code, request->alpha2,
sizeof(request->alpha2));
mwifiex_send_domain_info_cmd_fw(wiphy);
}
}
/*
* This function sets the fragmentation threshold.

8
drivers/net/wireless/mwifiex/sta_ioctl.c
View File

@ -205,6 +205,14 @@ static int mwifiex_process_country_ie(struct mwifiex_private *priv,
return 0;
}
if (!strncmp(priv->adapter->country_code, &country_ie[2], 2)) {
rcu_read_unlock();
wiphy_dbg(priv->wdev->wiphy,
"11D: skip setting domain info in FW\n");
return 0;
}
memcpy(priv->adapter->country_code, &country_ie[2], 2);
domain_info->country_code[0] = country_ie[2];
domain_info->country_code[1] = country_ie[3];
domain_info->country_code[2] = ' ';