mac80211: brcm: backport first set of 5.4 brcmfmac changes

This doesn't include 9ff8614a3dbe ("brcmfmac: use separate Kconfig file
for brcmfmac") due to a few conflicts with backports changes.

An important change is:
[PATCH 2/7] brcmfmac: change the order of things in brcmf_detach()
which fixes a rmmod crash in the brcmf_txfinalize().

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit db8e08a5a4469f98ed5d9b0ff3189e356f53d924)

1 files changed, 37 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/brcm/384-v5.4-0004-brcmfmac-clear-events-in-brcmf_fweh_detach-will-alwa.patch b/package/kernel/mac80211/patches/brcm/384-v5.4-0004-brcmfmac-clear-events-in-brcmf_fweh_detach-will-alwa.patch
new file mode 100644
index 0000000000..297e2bbf91
--- /dev/null
+++ b/package/kernel/mac80211/patches/brcm/384-v5.4-0004-brcmfmac-clear-events-in-brcmf_fweh_detach-will-alwa.patch
@@ -0,0 +1,37 @@
+From 0d91defd7bfc42c0ed053ba03b5ea2eff2e1d2f5 Mon Sep 17 00:00:00 2001
+From: Arend van Spriel <arend.vanspriel@broadcom.com>
+Date: Thu, 11 Jul 2019 11:05:09 +0200
+Subject: [PATCH 4/7] brcmfmac: clear events in brcmf_fweh_detach() will always
+ fail
+
+Clearing firmware events in brcmf_fweh_detach() is always failing
+because it is called only upon driver remove and communication
+with firmware is no longer possible.
+
+Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
+Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
+Reviewed-by: Franky Lin <franky.lin@broadcom.com>
+Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
+---
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c | 9 ---------
+ 1 file changed, 9 deletions(-)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c
+@@ -303,16 +303,7 @@ void brcmf_fweh_attach(struct brcmf_pub
+ void brcmf_fweh_detach(struct brcmf_pub *drvr)
+ {
+ 	struct brcmf_fweh_info *fweh = &drvr->fweh;
+-	struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);
+-	s8 eventmask[BRCMF_EVENTING_MASK_LEN];
+ 
+-	if (ifp) {
+-		/* clear all events */
+-		memset(eventmask, 0, BRCMF_EVENTING_MASK_LEN);
+-		(void)brcmf_fil_iovar_data_set(ifp, "event_msgs",
+-					       eventmask,
+-					       BRCMF_EVENTING_MASK_LEN);
+-	}
+ 	/* cancel the worker */
+ 	cancel_work_sync(&fweh->event_work);
+ 	WARN_ON(!list_empty(&fweh->event_q));