brcmfmac: ignore IF event if firmware indicates it

Not every IF event from the firmware needs to result in a
related interface, netdev or wdev, on the host. This is
indicated in the event message. Handle that flag and effectively
ignore the firmware event.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd.h b/drivers/net/wireless/brcm80211/brcmfmac/dhd.h
index 1273dfdb521b..2eb9e642c9bf 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd.h
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd.h
@@ -194,6 +194,8 @@
 #define BRCMF_E_IF_DEL                          2
 #define BRCMF_E_IF_CHANGE                       3
 
+#define BRCMF_E_IF_FLAG_NOIF                    1
+
 #define BRCMF_E_IF_ROLE_STA                     0
 #define BRCMF_E_IF_ROLE_AP                      1
 #define BRCMF_E_IF_ROLE_WDS                     2
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fweh.c b/drivers/net/wireless/brcm80211/brcmfmac/fweh.c
index 83ee53a7c76e..fad77dd2a3a5 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/fweh.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/fweh.c
@@ -185,6 +185,10 @@ static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr,
                   ifevent->action, ifevent->ifidx, ifevent->bssidx,
                   ifevent->flags, ifevent->role);
 
+        if (ifevent->flags & BRCMF_E_IF_FLAG_NOIF) {
+                brcmf_dbg(EVENT, "event can be ignored\n");
+                return;
+        }
         if (ifevent->ifidx >= BRCMF_MAX_IFS) {
                 brcmf_err("invalid interface index: %u\n",
                           ifevent->ifidx);