mac80211: brcmfmac: backport fixes from kernel 5.4

This fixes:
1) Crash during USB disconnect
2) Crash in brcmf_txfinalize() on rmmod with packets queued
3) Some errors in exit path

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit 8231f67218e584be61d32b24bd17cc55e500638c)

1 files changed, 27 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/352-v5.4-0007-brcmfmac-remove-unnecessary-strlcpy-upon-obtaining-v.patch b/package/kernel/mac80211/patches/352-v5.4-0007-brcmfmac-remove-unnecessary-strlcpy-upon-obtaining-v.patch
new file mode 100644
index 0000000000..a1fcebd512
--- /dev/null
+++ b/package/kernel/mac80211/patches/352-v5.4-0007-brcmfmac-remove-unnecessary-strlcpy-upon-obtaining-v.patch
@@ -0,0 +1,27 @@
+From 979c9a17fc78f3b8393fd92ca250fe4239872eee Mon Sep 17 00:00:00 2001
+From: Arend van Spriel <arend.vanspriel@broadcom.com>
+Date: Thu, 11 Jul 2019 11:05:12 +0200
+Subject: [PATCH 7/7] brcmfmac: remove unnecessary strlcpy() upon obtaining
+ "ver" iovar
+
+Recently a strcpy() was replaced by strlcpy(). However, the strcpy()
+was not needed in the first place. So removing that line of code.
+
+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/common.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
+@@ -269,7 +269,6 @@ int brcmf_c_preinit_dcmds(struct brcmf_i
+ 
+ 	/* query for 'ver' to get version info from firmware */
+ 	memset(buf, 0, sizeof(buf));
+-	strlcpy(buf, "ver", sizeof(buf));
+ 	err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf));
+ 	if (err < 0) {
+ 		bphy_err(drvr, "Retrieving version information failed, %d\n",