Hello Ajay Singh,
The patch 8f1a0ac1eba7: "staging: wilc1000: handle scan operation
callback from cfg80211 context" from Dec 2, 2018, leads to the
following static checker warning:
drivers/staging/wilc1000/wilc_wfi_cfgoperations.c:562 scan()
error: NULL dereference inside function 'wilc_scan()'
drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
541 if (request->n_channels <= MAX_NUM_SCANNED_NETWORKS) {
542 for (i = 0; i < request->n_channels; i++) {
543 u16 freq = request->channels[i]->center_freq;
544
545 scan_ch_list[i] =
ieee80211_frequency_to_channel(freq);
546 }
547
548 if (request->n_ssids >= 1) {
549 if (wilc_wfi_cfg_alloc_fill_ssid(request,
550 &hidden_ntwk))
{
551 ret = -ENOMEM;
552 goto out;
553 }
554
555 ret = wilc_scan(vif, WILC_FW_USER_SCAN,
556 WILC_FW_ACTIVE_SCAN,
scan_ch_list,
557 request->n_channels,
558 (const u8 *)request->ie,
559 request->ie_len,
cfg_scan_result,
560 (void *)priv, &hidden_ntwk);
561 } else {
562 ret = wilc_scan(vif, WILC_FW_USER_SCAN,
563 WILC_FW_ACTIVE_SCAN,
scan_ch_list,
564 request->n_channels,
565 (const u8 *)request->ie,
566 request->ie_len,
cfg_scan_result,
567 (void *)priv, NULL);
^^^^
The old code used to have a check for NULL.
568 }
569 } else {
570 netdev_err(priv->dev, "Requested scanned channels
over\n");
571 }
regards,
dan carpenter
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