Handle possible 'wait_for_completion_timeout()' errors in
'brcmf_p2p_af_searching_channel()' and 'brcmf_p2p_del_vif()',
fix spelling and add comments where appropriate. Compile
tested only.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Dmitry Antipov <dmantipov@xxxxxxxxx>
---
v4: unchanged since v3
v3: adjust per Arend's review
v2: rebase against wireless-next tree
---
.../broadcom/brcm80211/brcmfmac/p2p.c | 36 +++++++++++--------
1 file changed, 22 insertions(+), 14 deletions(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
index 6e0c90f4718b..a346c5a6e602 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
@@ -1151,6 +1151,7 @@ static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p)
{
struct afx_hdl *afx_hdl = &p2p->afx_hdl;
struct brcmf_cfg80211_vif *pri_vif;
+ bool timeout = false;
s32 retry;
brcmf_dbg(TRACE, "Enter\n");
@@ -1173,8 +1174,10 @@ static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p)
retry);
/* search peer on peer's listen channel */
schedule_work(&afx_hdl->afx_work);
- wait_for_completion_timeout(&afx_hdl->act_frm_scan,
- P2P_AF_FRM_SCAN_MAX_WAIT);
+ timeout = !wait_for_completion_timeout
+ (&afx_hdl->act_frm_scan, P2P_AF_FRM_SCAN_MAX_WAIT);
+ if (timeout)
+ break;
if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) ||
(!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
&p2p->status)))
@@ -1186,8 +1189,11 @@ static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p)
/* listen on my listen channel */
afx_hdl->is_listen = true;
schedule_work(&afx_hdl->afx_work);
- wait_for_completion_timeout(&afx_hdl->act_frm_scan,
- P2P_AF_FRM_SCAN_MAX_WAIT);
+ timeout = !wait_for_completion_timeout
+ (&afx_hdl->act_frm_scan,
+ P2P_AF_FRM_SCAN_MAX_WAIT);
+ if (timeout)
+ break;
}
if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) ||
(!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
@@ -1209,7 +1215,7 @@ static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p)
clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status);
- return afx_hdl->peer_chan;
+ return timeout ? P2P_INVALID_CHANNEL : afx_hdl->peer_chan;
}
@@ -1580,10 +1586,11 @@ static s32 brcmf_p2p_tx_action_frame(struct brcmf_p2p_info *p2p,
(p2p->wait_for_offchan_complete) ?
"off-channel" : "on-channel");
+ /* timeout would cause the code to proceed in the else branch below */
wait_for_completion_timeout(&p2p->send_af_done, P2P_AF_MAX_WAIT_TIME);
if (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status)) {
- brcmf_dbg(TRACE, "TX action frame operation is success\n");
+ brcmf_dbg(TRACE, "TX action frame operation has succeeded\n");
} else {
err = -EIO;
brcmf_dbg(TRACE, "TX action frame operation has failed\n");
@@ -2371,7 +2378,7 @@ int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev)
struct brcmf_cfg80211_vif *vif;
enum nl80211_iftype iftype;
bool wait_for_disable = false;
- int err;
+ int err = 0;
brcmf_dbg(TRACE, "delete P2P vif\n");
vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
@@ -2403,14 +2410,15 @@ int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev)
clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n");
- if (wait_for_disable)
- wait_for_completion_timeout(&cfg->vif_disabled,
- BRCMF_P2P_DISABLE_TIMEOUT);
-
- err = 0;
if (iftype != NL80211_IFTYPE_P2P_DEVICE) {
- brcmf_vif_clear_mgmt_ies(vif);
- err = brcmf_p2p_release_p2p_if(vif);
+ if (wait_for_disable)
+ err = (wait_for_completion_timeout
+ (&cfg->vif_disabled,
+ BRCMF_P2P_DISABLE_TIMEOUT) ? 0 : -ETIMEDOUT);
+ if (!err) {
+ brcmf_vif_clear_mgmt_ies(vif);
+ err = brcmf_p2p_release_p2p_if(vif);
+ }
}
if (!err) {
/* wait for firmware event */
--
2.43.0
