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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>
This commit is contained in:
Rafał Miłecki 2019-07-21 23:09:53 +02:00
parent 627bb0b8dc
commit 8231f67218
11 changed files with 519 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
package/kernel/mac80211/patches/467-v5.4-brcmfmac-use-strlcpy-instead-of-strcpy.patch Normal file
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@ -0,0 +1,26 @@
From bbfab331e3abd9fa8767eea6bf5c4684cdd4b934 Mon Sep 17 00:00:00 2001
From: Neo Jou <neojou@gmail.com>
Date: Tue, 21 May 2019 17:12:20 +0800
Subject: [PATCH] brcmfmac: use strlcpy() instead of strcpy()
The function strcpy() is inherently not safe. Though the function
works without problems here, it would be better to use other safer
function, e.g. strlcpy(), to replace strcpy() still.
Signed-off-by: Neo Jou <neojou@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
@@ -269,7 +269,7 @@ int brcmf_c_preinit_dcmds(struct brcmf_i
/* query for 'ver' to get version info from firmware */
memset(buf, 0, sizeof(buf));
- strcpy(buf, "ver");
+ 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",

55
package/kernel/mac80211/patches/468-v5.4-0001-brcmfmac-add-160MHz-in-chandef_to_chanspec.patch Normal file
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@ -0,0 +1,55 @@
From 46f24cd5980de4302982d38ebb6620560ead10b3 Mon Sep 17 00:00:00 2001
From: Arend van Spriel <arend.vanspriel@broadcom.com>
Date: Thu, 11 Jul 2019 10:45:30 +0200
Subject: [PATCH 1/3] brcmfmac: add 160MHz in chandef_to_chanspec()
The function chandef_to_chanspec() was not handling 160MHz bandwidth
resulting in wrong encoding of the channel. That resulting in firmware
rejecting the provided channel specification.
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>
---
.../broadcom/brcm80211/brcmfmac/cfg80211.c | 21 ++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -287,8 +287,26 @@ static u16 chandef_to_chanspec(struct br
else
ch_inf.sb = BRCMU_CHAN_SB_UU;
break;
- case NL80211_CHAN_WIDTH_80P80:
case NL80211_CHAN_WIDTH_160:
+ ch_inf.bw = BRCMU_CHAN_BW_160;
+ if (primary_offset == -70)
+ ch_inf.sb = BRCMU_CHAN_SB_LLL;
+ else if (primary_offset == -50)
+ ch_inf.sb = BRCMU_CHAN_SB_LLU;
+ else if (primary_offset == -30)
+ ch_inf.sb = BRCMU_CHAN_SB_LUL;
+ else if (primary_offset == -10)
+ ch_inf.sb = BRCMU_CHAN_SB_LUU;
+ else if (primary_offset == 10)
+ ch_inf.sb = BRCMU_CHAN_SB_ULL;
+ else if (primary_offset == 30)
+ ch_inf.sb = BRCMU_CHAN_SB_ULU;
+ else if (primary_offset == 50)
+ ch_inf.sb = BRCMU_CHAN_SB_UUL;
+ else
+ ch_inf.sb = BRCMU_CHAN_SB_UUU;
+ break;
+ case NL80211_CHAN_WIDTH_80P80:
case NL80211_CHAN_WIDTH_5:
case NL80211_CHAN_WIDTH_10:
default:
@@ -307,6 +325,7 @@ static u16 chandef_to_chanspec(struct br
}
d11inf->encchspec(&ch_inf);
+ brcmf_dbg(TRACE, "chanspec: 0x%x\n", ch_inf.chspec);
return ch_inf.chspec;
}

167
package/kernel/mac80211/patches/469-v5.4-0001-Revert-brcmfmac-fix-NULL-pointer-derefence-during-US.patch Normal file
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@ -0,0 +1,167 @@
From 7acf04a0ae2adf5d3e9de9adeec3129e74bf6ef2 Mon Sep 17 00:00:00 2001
From: Arend van Spriel <arend.vanspriel@broadcom.com>
Date: Thu, 11 Jul 2019 11:05:06 +0200
Subject: [PATCH 1/7] Revert "brcmfmac: fix NULL pointer derefence during USB
disconnect"
This reverts commit 5cdb0ef6144f47440850553579aa923c20a63f23. Subsequent
changes make rework the driver code fixing the issue differently.
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
---
.../wireless/broadcom/brcm80211/brcmfmac/bcdc.c | 11 ++---------
.../wireless/broadcom/brcm80211/brcmfmac/bcdc.h | 6 ++----
.../wireless/broadcom/brcm80211/brcmfmac/core.c | 4 +---
.../broadcom/brcm80211/brcmfmac/fwsignal.c | 16 ++++------------
.../broadcom/brcm80211/brcmfmac/fwsignal.h | 3 +--
.../wireless/broadcom/brcm80211/brcmfmac/proto.c | 10 ++--------
.../wireless/broadcom/brcm80211/brcmfmac/proto.h | 3 +--
7 files changed, 13 insertions(+), 40 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
@@ -490,18 +490,11 @@ fail:
return -ENOMEM;
}
-void brcmf_proto_bcdc_detach_pre_delif(struct brcmf_pub *drvr)
-{
- struct brcmf_bcdc *bcdc = drvr->proto->pd;
-
- brcmf_fws_detach_pre_delif(bcdc->fws);
-}
-
-void brcmf_proto_bcdc_detach_post_delif(struct brcmf_pub *drvr)
+void brcmf_proto_bcdc_detach(struct brcmf_pub *drvr)
{
struct brcmf_bcdc *bcdc = drvr->proto->pd;
drvr->proto->pd = NULL;
- brcmf_fws_detach_post_delif(bcdc->fws);
+ brcmf_fws_detach(bcdc->fws);
kfree(bcdc);
}
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.h
@@ -18,16 +18,14 @@
#ifdef CPTCFG_BRCMFMAC_PROTO_BCDC
int brcmf_proto_bcdc_attach(struct brcmf_pub *drvr);
-void brcmf_proto_bcdc_detach_pre_delif(struct brcmf_pub *drvr);
-void brcmf_proto_bcdc_detach_post_delif(struct brcmf_pub *drvr);
+void brcmf_proto_bcdc_detach(struct brcmf_pub *drvr);
void brcmf_proto_bcdc_txflowblock(struct device *dev, bool state);
void brcmf_proto_bcdc_txcomplete(struct device *dev, struct sk_buff *txp,
bool success);
struct brcmf_fws_info *drvr_to_fws(struct brcmf_pub *drvr);
#else
static inline int brcmf_proto_bcdc_attach(struct brcmf_pub *drvr) { return 0; }
-static void brcmf_proto_bcdc_detach_pre_delif(struct brcmf_pub *drvr) {};
-static inline void brcmf_proto_bcdc_detach_post_delif(struct brcmf_pub *drvr) {}
+static inline void brcmf_proto_bcdc_detach(struct brcmf_pub *drvr) {}
#endif
#endif /* BRCMFMAC_BCDC_H */
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1344,8 +1344,6 @@ void brcmf_detach(struct device *dev)
brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);
- brcmf_proto_detach_pre_delif(drvr);
-
/* make sure primary interface removed last */
for (i = BRCMF_MAX_IFS-1; i > -1; i--)
brcmf_remove_interface(drvr->iflist[i], false);
@@ -1355,7 +1353,7 @@ void brcmf_detach(struct device *dev)
brcmf_bus_stop(drvr->bus_if);
- brcmf_proto_detach_post_delif(drvr);
+ brcmf_proto_detach(drvr);
bus_if->drvr = NULL;
wiphy_free(drvr->wiphy);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
@@ -2416,25 +2416,17 @@ struct brcmf_fws_info *brcmf_fws_attach(
return fws;
fail:
- brcmf_fws_detach_pre_delif(fws);
- brcmf_fws_detach_post_delif(fws);
+ brcmf_fws_detach(fws);
return ERR_PTR(rc);
}
-void brcmf_fws_detach_pre_delif(struct brcmf_fws_info *fws)
+void brcmf_fws_detach(struct brcmf_fws_info *fws)
{
if (!fws)
return;
- if (fws->fws_wq) {
- destroy_workqueue(fws->fws_wq);
- fws->fws_wq = NULL;
- }
-}
-void brcmf_fws_detach_post_delif(struct brcmf_fws_info *fws)
-{
- if (!fws)
- return;
+ if (fws->fws_wq)
+ destroy_workqueue(fws->fws_wq);
/* cleanup */
brcmf_fws_lock(fws);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h
@@ -19,8 +19,7 @@
#define FWSIGNAL_H_
struct brcmf_fws_info *brcmf_fws_attach(struct brcmf_pub *drvr);
-void brcmf_fws_detach_pre_delif(struct brcmf_fws_info *fws);
-void brcmf_fws_detach_post_delif(struct brcmf_fws_info *fws);
+void brcmf_fws_detach(struct brcmf_fws_info *fws);
void brcmf_fws_debugfs_create(struct brcmf_pub *drvr);
bool brcmf_fws_queue_skbs(struct brcmf_fws_info *fws);
bool brcmf_fws_fc_active(struct brcmf_fws_info *fws);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.c
@@ -67,22 +67,16 @@ fail:
return -ENOMEM;
}
-void brcmf_proto_detach_post_delif(struct brcmf_pub *drvr)
+void brcmf_proto_detach(struct brcmf_pub *drvr)
{
brcmf_dbg(TRACE, "Enter\n");
if (drvr->proto) {
if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC)
- brcmf_proto_bcdc_detach_post_delif(drvr);
+ brcmf_proto_bcdc_detach(drvr);
else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF)
brcmf_proto_msgbuf_detach(drvr);
kfree(drvr->proto);
drvr->proto = NULL;
}
}
-
-void brcmf_proto_detach_pre_delif(struct brcmf_pub *drvr)
-{
- if (drvr->proto && drvr->bus_if->proto_type == BRCMF_PROTO_BCDC)
- brcmf_proto_bcdc_detach_pre_delif(drvr);
-}
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h
@@ -54,8 +54,7 @@ struct brcmf_proto {
int brcmf_proto_attach(struct brcmf_pub *drvr);
-void brcmf_proto_detach_pre_delif(struct brcmf_pub *drvr);
-void brcmf_proto_detach_post_delif(struct brcmf_pub *drvr);
+void brcmf_proto_detach(struct brcmf_pub *drvr);
static inline int brcmf_proto_hdrpull(struct brcmf_pub *drvr, bool do_fws,
struct sk_buff *skb,

66
package/kernel/mac80211/patches/469-v5.4-0002-brcmfmac-change-the-order-of-things-in-brcmf_detach.patch Normal file
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@ -0,0 +1,66 @@
From 701fb69f2c36cba83583990e67a3925f920fd96a Mon Sep 17 00:00:00 2001
From: Arend van Spriel <arend.vanspriel@broadcom.com>
Date: Thu, 11 Jul 2019 11:05:07 +0200
Subject: [PATCH 2/7] brcmfmac: change the order of things in brcmf_detach()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
When brcmf_detach() from the bus layer upon rmmod we can no longer
communicate. Hence we will set the bus state to DOWN and cleanup
the event and protocol layer. The network interfaces need to be
deleted before brcmf_cfg80211_detach() because the latter does the
wiphy_unregister() which issues a warning if there are still network
devices linked to the wiphy instance.
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>
Tested-by: Rafał Miłecki <rafal@milecki.pl>
---
.../broadcom/brcm80211/brcmfmac/core.c | 27 ++++++++++---------
1 file changed, 14 insertions(+), 13 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1337,25 +1337,26 @@ void brcmf_detach(struct device *dev)
unregister_inet6addr_notifier(&drvr->inet6addr_notifier);
#endif
- /* stop firmware event handling */
- brcmf_fweh_detach(drvr);
- if (drvr->config)
- brcmf_p2p_detach(&drvr->config->p2p);
-
brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);
-
- /* make sure primary interface removed last */
- for (i = BRCMF_MAX_IFS-1; i > -1; i--)
- brcmf_remove_interface(drvr->iflist[i], false);
-
- brcmf_cfg80211_detach(drvr->config);
- drvr->config = NULL;
-
brcmf_bus_stop(drvr->bus_if);
+ brcmf_fweh_detach(drvr);
brcmf_proto_detach(drvr);
+ /* make sure primary interface removed last */
+ for (i = BRCMF_MAX_IFS - 1; i > -1; i--) {
+ if (drvr->iflist[i])
+ brcmf_del_if(drvr, drvr->iflist[i]->bsscfgidx, false);
+ }
+
+ if (drvr->config) {
+ brcmf_p2p_detach(&drvr->config->p2p);
+ brcmf_cfg80211_detach(drvr->config);
+ drvr->config = NULL;
+ }
+
bus_if->drvr = NULL;
+
wiphy_free(drvr->wiphy);
}

29
package/kernel/mac80211/patches/469-v5.4-0003-brcmfmac-avoid-firmware-command-in-brcmf_netdev_open.patch Normal file
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@ -0,0 +1,29 @@
From 1be747d977014fea13dbac0de885c0c358eb393c Mon Sep 17 00:00:00 2001
From: Arend van Spriel <arend.vanspriel@broadcom.com>
Date: Thu, 11 Jul 2019 11:05:08 +0200
Subject: [PATCH 3/7] brcmfmac: avoid firmware command in brcmf_netdev_open()
when bus is down
No point in sending a firmware command when bus is down so make it
conditional checking the state.
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/core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -589,7 +589,8 @@ static int brcmf_netdev_stop(struct net_
brcmf_cfg80211_down(ndev);
- brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", NULL, 0);
+ if (ifp->drvr->bus_if->state == BRCMF_BUS_UP)
+ brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", NULL, 0);
brcmf_net_setcarrier(ifp, false);

37
package/kernel/mac80211/patches/469-v5.4-0004-brcmfmac-clear-events-in-brcmf_fweh_detach-will-alwa.patch Normal file
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@ -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
@@ -314,16 +314,7 @@ 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));

78
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@ -0,0 +1,78 @@
From 66ab63fbb33bf367807e3e471231379dce6f8b8c Mon Sep 17 00:00:00 2001
From: Arend van Spriel <arend.vanspriel@broadcom.com>
Date: Thu, 11 Jul 2019 11:05:10 +0200
Subject: [PATCH 5/7] brcmfmac: avoid firmware commands when bus is down
Upon rmmod a few attempts are made to inform firmware, but there is
no point as the bus is down and these will fail. Avoid them to keep
the logs clean.
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
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>
---
.../broadcom/brcm80211/brcmfmac/cfg80211.c | 23 +++++++++++--------
1 file changed, 13 insertions(+), 10 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -1297,17 +1297,21 @@ static void brcmf_link_down(struct brcmf
{
struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(vif->wdev.wiphy);
struct brcmf_pub *drvr = cfg->pub;
+ bool bus_up = drvr->bus_if->state == BRCMF_BUS_UP;
s32 err = 0;
brcmf_dbg(TRACE, "Enter\n");
if (test_and_clear_bit(BRCMF_VIF_STATUS_CONNECTED, &vif->sme_state)) {
- brcmf_dbg(INFO, "Call WLC_DISASSOC to stop excess roaming\n ");
- err = brcmf_fil_cmd_data_set(vif->ifp,
- BRCMF_C_DISASSOC, NULL, 0);
- if (err) {
- bphy_err(drvr, "WLC_DISASSOC failed (%d)\n", err);
+ if (bus_up) {
+ brcmf_dbg(INFO, "Call WLC_DISASSOC to stop excess roaming\n");
+ err = brcmf_fil_cmd_data_set(vif->ifp,
+ BRCMF_C_DISASSOC, NULL, 0);
+ if (err)
+ bphy_err(drvr, "WLC_DISASSOC failed (%d)\n",
+ err);
}
+
if ((vif->wdev.iftype == NL80211_IFTYPE_STATION) ||
(vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT))
cfg80211_disconnected(vif->wdev.netdev, reason, NULL, 0,
@@ -1317,7 +1321,8 @@ static void brcmf_link_down(struct brcmf
clear_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status);
brcmf_btcoex_set_mode(vif, BRCMF_BTCOEX_ENABLED, 0);
if (vif->profile.use_fwsup != BRCMF_PROFILE_FWSUP_NONE) {
- brcmf_set_pmk(vif->ifp, NULL, 0);
+ if (bus_up)
+ brcmf_set_pmk(vif->ifp, NULL, 0);
vif->profile.use_fwsup = BRCMF_PROFILE_FWSUP_NONE;
}
brcmf_dbg(TRACE, "Exit\n");
@@ -5006,18 +5011,16 @@ static int brcmf_cfg80211_get_channel(st
struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
struct net_device *ndev = wdev->netdev;
struct brcmf_pub *drvr = cfg->pub;
- struct brcmf_if *ifp;
struct brcmu_chan ch;
enum nl80211_band band = 0;
enum nl80211_chan_width width = 0;
u32 chanspec;
int freq, err;
- if (!ndev)
+ if (!ndev || drvr->bus_if->state != BRCMF_BUS_UP)
return -ENODEV;
- ifp = netdev_priv(ndev);
- err = brcmf_fil_iovar_int_get(ifp, "chanspec", &chanspec);
+ err = brcmf_fil_iovar_int_get(netdev_priv(ndev), "chanspec", &chanspec);
if (err) {
bphy_err(drvr, "chanspec failed (%d)\n", err);
return err;

32
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@ -0,0 +1,32 @@
From dabf1e17d33e087d4e24e6d0224cf9bc04ebfcc1 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 6/7] brcmfmac: simply remove flowring if bus is down
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>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
@@ -1408,6 +1408,13 @@ void brcmf_msgbuf_delete_flowring(struct
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);

27
package/kernel/mac80211/patches/469-v5.4-0007-brcmfmac-remove-unnecessary-strlcpy-upon-obtaining-v.patch Normal file
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@ -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",

2
package/kernel/mac80211/patches/861-brcmfmac-workaround-bug-with-some-inconsistent-BSSes.patch
View File

@ -10,7 +10,7 @@ Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -620,8 +620,36 @@ static struct wireless_dev *brcmf_cfg802
@@ -639,8 +639,36 @@ static struct wireless_dev *brcmf_cfg802
struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
struct brcmf_pub *drvr = cfg->pub;
struct wireless_dev *wdev;

2
package/kernel/mac80211/patches/862-brcmfmac-Disable-power-management.patch
View File

@ -14,7 +14,7 @@ Signed-off-by: Phil Elwell <phil@raspberrypi.org>
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -2774,6 +2774,10 @@ brcmf_cfg80211_set_power_mgmt(struct wip
@@ -2798,6 +2798,10 @@ brcmf_cfg80211_set_power_mgmt(struct wip
* preference in cfg struct to apply this to
* FW later while initializing the dongle
*/