From e0bfb9601d4812719167cc4124a0d6db1e2f55e4 Mon Sep 17 00:00:00 2001
From: Arend van Spriel <arend.vanspriel@broadcom.com>
Date: Thu, 11 Jul 2019 11:05:11 +0200
Subject: [PATCH] brcmfmac: simply remove flowring if bus is down
Git-commit: e0bfb9601d4812719167cc4124a0d6db1e2f55e4
Patch-mainline: v5.4-rc1
References: jsc#SLE-13430
When the bus is down, eg. due to rmmod, there is no need to
attempt to inform firmware about it.
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>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
index 241747bd5cb2..8428be8b8d43 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
@@ -1398,6 +1398,13 @@ void brcmf_msgbuf_delete_flowring(struct brcmf_pub *drvr, u16 flowid)
u8 ifidx;
int err;
+ /* no need to submit if firmware can not be reached */
+ if (drvr->bus_if->state != BRCMF_BUS_UP) {
+ brcmf_dbg(MSGBUF, "bus down, flowring will be removed\n");
+ brcmf_msgbuf_remove_flowring(msgbuf, flowid);
+ return;
+ }
+
commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
brcmf_commonring_lock(commonring);
ret_ptr = brcmf_commonring_reserve_for_write(commonring);
--
2.16.4