From: Christian Lamparter chunkeey@gmail.com
commit b14fba7ebd04082f7767a11daea7f12f3593de22 upstream.
This patch follows up on a bug-report by Frank Schäfer that discovered P2P GO wasn't working with wpa_supplicant. This patch removes part of the broken P2P GO support but keeps the vif switchover code in place.
Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/3a9d86b6-744f-e670-8792-9167257edef8@googlemail.com Reported-by: Frank Schäfer fschaefer.oss@googlemail.com Signed-off-by: Christian Lamparter chunkeey@gmail.com Signed-off-by: Kalle Valo kvalo@codeaurora.org Link: https://lore.kernel.org/r/20200425092811.9494-1-chunkeey@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/net/wireless/ath/carl9170/fw.c | 4 +--- drivers/net/wireless/ath/carl9170/main.c | 21 ++++----------------- 2 files changed, 5 insertions(+), 20 deletions(-)
--- a/drivers/net/wireless/ath/carl9170/fw.c +++ b/drivers/net/wireless/ath/carl9170/fw.c @@ -338,9 +338,7 @@ static int carl9170_fw(struct ar9170 *ar ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
if (SUPP(CARL9170FW_WLANTX_CAB)) { - if_comb_types |= - BIT(NL80211_IFTYPE_AP) | - BIT(NL80211_IFTYPE_P2P_GO); + if_comb_types |= BIT(NL80211_IFTYPE_AP);
#ifdef CONFIG_MAC80211_MESH if_comb_types |= --- a/drivers/net/wireless/ath/carl9170/main.c +++ b/drivers/net/wireless/ath/carl9170/main.c @@ -582,11 +582,10 @@ static int carl9170_init_interface(struc ar->disable_offload |= ((vif->type != NL80211_IFTYPE_STATION) && (vif->type != NL80211_IFTYPE_AP));
- /* While the driver supports HW offload in a single - * P2P client configuration, it doesn't support HW - * offload in the favourit, concurrent P2P GO+CLIENT - * configuration. Hence, HW offload will always be - * disabled for P2P. + /* The driver used to have P2P GO+CLIENT support, + * but since this was dropped and we don't know if + * there are any gremlins lurking in the shadows, + * so best we keep HW offload disabled for P2P. */ ar->disable_offload |= vif->p2p;
@@ -639,18 +638,6 @@ static int carl9170_op_add_interface(str if (vif->type == NL80211_IFTYPE_STATION) break;
- /* P2P GO [master] use-case - * Because the P2P GO station is selected dynamically - * by all participating peers of a WIFI Direct network, - * the driver has be able to change the main interface - * operating mode on the fly. - */ - if (main_vif->p2p && vif->p2p && - vif->type == NL80211_IFTYPE_AP) { - old_main = main_vif; - break; - } - err = -EBUSY; rcu_read_unlock();