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iwlegacy: fix IBSS cleanup 

We do not correctly change interface type when switching from
IBSS mode to STA mode, that results in microcode errors.

Resolves:
https://bugzilla.redhat.com/show_bug.cgi?id=886946

Reported-by: Jaroslav Skarvada <jskarvad@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stanislaw Gruszka 2013-01-16 11:45:15 +01:00 committed by John W. Linville
parent ead0ad1648
commit fa4cffcba9
1 changed files with 14 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
drivers/net/wireless/iwlegacy/common.c
View File

@ -3958,17 +3958,21 @@ il_connection_init_rx_config(struct il_priv *il)
memset(&il->staging, 0, sizeof(il->staging));
if (!il->vif) {
switch (il->iw_mode) {
case NL80211_IFTYPE_UNSPECIFIED:
il->staging.dev_type = RXON_DEV_TYPE_ESS;
} else if (il->vif->type == NL80211_IFTYPE_STATION) {
break;
case NL80211_IFTYPE_STATION:
il->staging.dev_type = RXON_DEV_TYPE_ESS;
il->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
} else if (il->vif->type == NL80211_IFTYPE_ADHOC) {
break;
case NL80211_IFTYPE_ADHOC:
il->staging.dev_type = RXON_DEV_TYPE_IBSS;
il->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
il->staging.filter_flags =
RXON_FILTER_BCON_AWARE_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
} else {
break;
default:
IL_ERR("Unsupported interface type %d\n", il->vif->type);
return;
}
@ -4550,8 +4554,7 @@ il_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
EXPORT_SYMBOL(il_mac_add_interface);
static void
il_teardown_interface(struct il_priv *il, struct ieee80211_vif *vif,
bool mode_change)
il_teardown_interface(struct il_priv *il, struct ieee80211_vif *vif)
{
lockdep_assert_held(&il->mutex);
@ -4560,9 +4563,7 @@ il_teardown_interface(struct il_priv *il, struct ieee80211_vif *vif,
il_force_scan_end(il);
}
if (!mode_change)
il_set_mode(il);
il_set_mode(il);
}
void
@ -4575,8 +4576,8 @@ il_mac_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
WARN_ON(il->vif != vif);
il->vif = NULL;
il_teardown_interface(il, vif, false);
il->iw_mode = NL80211_IFTYPE_UNSPECIFIED;
il_teardown_interface(il, vif);
memset(il->bssid, 0, ETH_ALEN);
D_MAC80211("leave\n");
@ -4685,18 +4686,10 @@ il_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
}
/* success */
il_teardown_interface(il, vif, true);
vif->type = newtype;
vif->p2p = false;
err = il_set_mode(il);
WARN_ON(err);
/*
* We've switched internally, but submitting to the
* device may have failed for some reason. Mask this
* error, because otherwise mac80211 will not switch
* (and set the interface type back) and we'll be
* out of sync with it.
*/
il->iw_mode = newtype;
il_teardown_interface(il, vif);
err = 0;
out: