[PATCH AUTOSEL 5.4 01/14] ARM: dts: ls1021a-tsn: update RGMII delays for sja1105 switch

[PATCH AUTOSEL 5.4 01/14] ARM: dts: ls1021a-tsn: update RGMII delays for sja1105 switch

[Sasha Levin]

From: Vladimir Oltean <vladimir.oltean@nxp.com>

[ Upstream commit e691f9282a89e24a8e87cdb91a181c6283ee5124 ]

In the new behavior, the sja1105 driver expects there to be explicit
RGMII delays present on the fixed-link ports, otherwise it will complain
that it falls back to legacy behavior, which is to apply RGMII delays
incorrectly derived from the phy-mode string.

In this case, the legacy behavior of the driver is to not apply delays
in any direction (mostly because the SJA1105T can't do that, so this
board uses PCB traces). To preserve that but also silence the driver,
use explicit delays of 0 ns. The delay information from the phy-mode is
ignored by new kernels (it's still RGMII as long as it's "rgmii*"
something), and the explicit {rx,tx}-internal-delay-ps properties are
ignored by old kernels, so the change works both ways.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/ls1021a-tsn.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/ls1021a-tsn.dts b/arch/arm/boot/dts/ls1021a-tsn.dts
index 7235ce2a32936..d5dce78c85617 100644
--- a/arch/arm/boot/dts/ls1021a-tsn.dts
+++ b/arch/arm/boot/dts/ls1021a-tsn.dts
@@ -90,6 +90,8 @@ port@4 {
 				/* Internal port connected to eth2 */
 				ethernet = <&enet2>;
 				phy-mode = "rgmii";
+				rx-internal-delay-ps = <0>;
+				tx-internal-delay-ps = <0>;
 				reg = <4>;
 
 				fixed-link {
-- 
2.34.1

[PATCH AUTOSEL 5.4 02/14] ARM: rockchip: Use memcpy_toio instead of memcpy on smp bring-up

[Sasha Levin]

From: "Ivan T. Ivanov" <iivanov@suse.de>

[ Upstream commit 423e85e97aaf69e5198bbec6811e3825c8b5019a ]

This fixes a potential kernel panic on memcpy when FORTIFY_SOURCE
is enabled. Because memory is iomem use appropriate function for
accessing it.

Signed-off-by: Ivan T. Ivanov <iivanov@suse.de>
Link: https://lore.kernel.org/r/20211116084616.24811-1-iivanov@suse.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/mach-rockchip/platsmp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-rockchip/platsmp.c b/arch/arm/mach-rockchip/platsmp.c
index 649e0a54784cd..8ee6e4b309b37 100644
--- a/arch/arm/mach-rockchip/platsmp.c
+++ b/arch/arm/mach-rockchip/platsmp.c
@@ -189,7 +189,7 @@ static int __init rockchip_smp_prepare_sram(struct device_node *node)
 	rockchip_boot_fn = __pa_symbol(secondary_startup);
 
 	/* copy the trampoline to sram, that runs during startup of the core */
-	memcpy(sram_base_addr, &rockchip_secondary_trampoline, trampoline_sz);
+	memcpy_toio(sram_base_addr, &rockchip_secondary_trampoline, trampoline_sz);
 	flush_cache_all();
 	outer_clean_range(0, trampoline_sz);
 
-- 
2.34.1

[PATCH AUTOSEL 5.4 03/14] mac80211: set up the fwd_skb->dev for mesh forwarding

[Sasha Levin]

From: Xing Song <xing.song@mediatek.com>

[ Upstream commit 942bd1070c3a39d1302fc5db73d60c86e3033c81 ]

Mesh forwarding requires that the fwd_skb->dev is set up for TX handling,
otherwise the following warning will be generated, so set it up for the
pending frames.

[   72.835674 ] WARNING: CPU: 0 PID: 1193 at __skb_flow_dissect+0x284/0x1298
[   72.842379 ] Modules linked in: ksmbd pppoe ppp_async l2tp_ppp ...
[   72.962020 ] CPU: 0 PID: 1193 Comm: kworker/u5:1 Tainted: P S 5.4.137 #0
[   72.969938 ] Hardware name: MT7622_MT7531 RFB (DT)
[   72.974659 ] Workqueue: napi_workq napi_workfn
[   72.979025 ] pstate: 60000005 (nZCv daif -PAN -UAO)
[   72.983822 ] pc : __skb_flow_dissect+0x284/0x1298
[   72.988444 ] lr : __skb_flow_dissect+0x54/0x1298
[   72.992977 ] sp : ffffffc010c738c0
[   72.996293 ] x29: ffffffc010c738c0 x28: 0000000000000000
[   73.001615 ] x27: 000000000000ffc2 x26: ffffff800c2eb818
[   73.006937 ] x25: ffffffc010a987c8 x24: 00000000000000ce
[   73.012259 ] x23: ffffffc010c73a28 x22: ffffffc010a99c60
[   73.017581 ] x21: 000000000000ffc2 x20: ffffff80094da800
[   73.022903 ] x19: 0000000000000000 x18: 0000000000000014
[   73.028226 ] x17: 00000000084d16af x16: 00000000d1fc0bab
[   73.033548 ] x15: 00000000715f6034 x14: 000000009dbdd301
[   73.038870 ] x13: 00000000ea4dcbc3 x12: 0000000000000040
[   73.044192 ] x11: 000000000eb00ff0 x10: 0000000000000000
[   73.049513 ] x9 : 000000000eb00073 x8 : 0000000000000088
[   73.054834 ] x7 : 0000000000000000 x6 : 0000000000000001
[   73.060155 ] x5 : 0000000000000000 x4 : 0000000000000000
[   73.065476 ] x3 : ffffffc010a98000 x2 : 0000000000000000
[   73.070797 ] x1 : 0000000000000000 x0 : 0000000000000000
[   73.076120 ] Call trace:
[   73.078572 ]  __skb_flow_dissect+0x284/0x1298
[   73.082846 ]  __skb_get_hash+0x7c/0x228
[   73.086629 ]  ieee80211_txq_may_transmit+0x7fc/0x17b8 [mac80211]
[   73.092564 ]  ieee80211_tx_prepare_skb+0x20c/0x268 [mac80211]
[   73.098238 ]  ieee80211_tx_pending+0x144/0x330 [mac80211]
[   73.103560 ]  tasklet_action_common.isra.16+0xb4/0x158
[   73.108618 ]  tasklet_action+0x2c/0x38
[   73.112286 ]  __do_softirq+0x168/0x3b0
[   73.115954 ]  do_softirq.part.15+0x88/0x98
[   73.119969 ]  __local_bh_enable_ip+0xb0/0xb8
[   73.124156 ]  napi_workfn+0x58/0x90
[   73.127565 ]  process_one_work+0x20c/0x478
[   73.131579 ]  worker_thread+0x50/0x4f0
[   73.135249 ]  kthread+0x124/0x128
[   73.138484 ]  ret_from_fork+0x10/0x1c

Signed-off-by: Xing Song <xing.song@mediatek.com>
Tested-By: Frank Wunderlich <frank-w@public-files.de>
Link: https://lore.kernel.org/r/20211123033123.2684-1-xing.song@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/mac80211/rx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 282bf336b15a4..cef9934347a53 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2879,6 +2879,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 	if (!fwd_skb)
 		goto out;
 
+	fwd_skb->dev = sdata->dev;
 	fwd_hdr =  (struct ieee80211_hdr *) fwd_skb->data;
 	fwd_hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_RETRY);
 	info = IEEE80211_SKB_CB(fwd_skb);
-- 
2.34.1

[PATCH AUTOSEL 5.4 04/14] mac80211: fix a memory leak where sta_info is not freed

[Sasha Levin]

From: Ahmed Zaki <anzaki@gmail.com>

[ Upstream commit 8f9dcc29566626f683843ccac6113a12208315ca ]

The following is from a system that went OOM due to a memory leak:

wlan0: Allocated STA 74:83:c2:64:0b:87
wlan0: Allocated STA 74:83:c2:64:0b:87
wlan0: IBSS finish 74:83:c2:64:0b:87 (---from ieee80211_ibss_add_sta)
wlan0: Adding new IBSS station 74:83:c2:64:0b:87
wlan0: moving STA 74:83:c2:64:0b:87 to state 2
wlan0: moving STA 74:83:c2:64:0b:87 to state 3
wlan0: Inserted STA 74:83:c2:64:0b:87
wlan0: IBSS finish 74:83:c2:64:0b:87 (---from ieee80211_ibss_work)
wlan0: Adding new IBSS station 74:83:c2:64:0b:87
wlan0: moving STA 74:83:c2:64:0b:87 to state 2
wlan0: moving STA 74:83:c2:64:0b:87 to state 3
.
.
wlan0: expiring inactive not authorized STA 74:83:c2:64:0b:87
wlan0: moving STA 74:83:c2:64:0b:87 to state 2
wlan0: moving STA 74:83:c2:64:0b:87 to state 1
wlan0: Removed STA 74:83:c2:64:0b:87
wlan0: Destroyed STA 74:83:c2:64:0b:87

The ieee80211_ibss_finish_sta() is called twice on the same STA from 2
different locations. On the second attempt, the allocated STA is not
destroyed creating a kernel memory leak.

This is happening because sta_info_insert_finish() does not call
sta_info_free() the second time when the STA already exists (returns
-EEXIST). Note that the caller sta_info_insert_rcu() assumes STA is
destroyed upon errors.

Same fix is applied to -ENOMEM.

Signed-off-by: Ahmed Zaki <anzaki@gmail.com>
Link: https://lore.kernel.org/r/20211002145329.3125293-1-anzaki@gmail.com
[change the error path label to use the existing code]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/mac80211/sta_info.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 7b2e8c890381a..384a95617ee5e 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -628,13 +628,13 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
 	/* check if STA exists already */
 	if (sta_info_get_bss(sdata, sta->sta.addr)) {
 		err = -EEXIST;
-		goto out_err;
+		goto out_cleanup;
 	}
 
 	sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL);
 	if (!sinfo) {
 		err = -ENOMEM;
-		goto out_err;
+		goto out_cleanup;
 	}
 
 	local->num_sta++;
@@ -690,8 +690,8 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
  out_drop_sta:
 	local->num_sta--;
 	synchronize_net();
+ out_cleanup:
 	cleanup_single_sta(sta);
- out_err:
 	mutex_unlock(&local->sta_mtx);
 	kfree(sinfo);
 	rcu_read_lock();
-- 
2.34.1

[PATCH AUTOSEL 5.4 05/14] nl80211: reset regdom when reloading regdb

[Sasha Levin]

From: Finn Behrens <me@kloenk.dev>

[ Upstream commit 1eda919126b420fee6b8d546f7f728fbbd4b8f11 ]

Reload the regdom when the regulatory db is reloaded.
Otherwise, the user had to change the regulatoy domain
to a different one and then reset it to the correct
one to have a new regulatory db take effect after a
reload.

Signed-off-by: Finn Behrens <fin@nyantec.com>
Link: https://lore.kernel.org/r/YaIIZfxHgqc/UTA7@gimli.kloenk.dev
[edit commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/net/regulatory.h |  1 +
 net/wireless/reg.c       | 27 +++++++++++++++++++++++++--
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/include/net/regulatory.h b/include/net/regulatory.h
index 3469750df0f44..16d61a0980e35 100644
--- a/include/net/regulatory.h
+++ b/include/net/regulatory.h
@@ -83,6 +83,7 @@ struct regulatory_request {
 	enum nl80211_dfs_regions dfs_region;
 	bool intersect;
 	bool processed;
+	bool reload;
 	enum environment_cap country_ie_env;
 	struct list_head list;
 };
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 0f3b57a73670b..38037a13e935e 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -133,6 +133,7 @@ static u32 reg_is_indoor_portid;
 
 static void restore_regulatory_settings(bool reset_user, bool cached);
 static void print_regdomain(const struct ieee80211_regdomain *rd);
+static void reg_process_hint(struct regulatory_request *reg_request);
 
 static const struct ieee80211_regdomain *get_cfg80211_regdom(void)
 {
@@ -1079,6 +1080,8 @@ int reg_reload_regdb(void)
 	const struct firmware *fw;
 	void *db;
 	int err;
+	const struct ieee80211_regdomain *current_regdomain;
+	struct regulatory_request *request;
 
 	err = request_firmware(&fw, "regulatory.db", &reg_pdev->dev);
 	if (err)
@@ -1099,8 +1102,27 @@ int reg_reload_regdb(void)
 	if (!IS_ERR_OR_NULL(regdb))
 		kfree(regdb);
 	regdb = db;
-	rtnl_unlock();
 
+	/* reset regulatory domain */
+	current_regdomain = get_cfg80211_regdom();
+
+	request = kzalloc(sizeof(*request), GFP_KERNEL);
+	if (!request) {
+		err = -ENOMEM;
+		goto out_unlock;
+	}
+
+	request->wiphy_idx = WIPHY_IDX_INVALID;
+	request->alpha2[0] = current_regdomain->alpha2[0];
+	request->alpha2[1] = current_regdomain->alpha2[1];
+	request->initiator = NL80211_USER_REG_HINT_USER;
+	request->user_reg_hint_type = NL80211_USER_REG_HINT_USER;
+	request->reload = true;
+
+	reg_process_hint(request);
+
+out_unlock:
+	rtnl_unlock();
  out:
 	release_firmware(fw);
 	return err;
@@ -2449,7 +2471,8 @@ reg_process_hint_user(struct regulatory_request *user_request)
 
 	treatment = __reg_process_hint_user(user_request);
 	if (treatment == REG_REQ_IGNORE ||
-	    treatment == REG_REQ_ALREADY_SET)
+	    (treatment == REG_REQ_ALREADY_SET &&
+	     !user_request->reload))
 		return REG_REQ_IGNORE;
 
 	user_request->intersect = treatment == REG_REQ_INTERSECT;
-- 
2.34.1

[PATCH AUTOSEL 5.4 06/14] iwlwifi: fix LED dependencies

[Sasha Levin]

From: Arnd Bergmann <arnd@arndb.de>

[ Upstream commit efdbfa0ad03e764419378485d1b8f6e7706fb1a3 ]

The dependencies for LED configuration are highly inconsistent and too
complicated at the moment. One of the results is a randconfig failure I
get very rarely when LEDS_CLASS is in a loadable module, but the wireless
core is built-in:

WARNING: unmet direct dependencies detected for MAC80211_LEDS
  Depends on [n]: NET [=y] && WIRELESS [=y] && MAC80211 [=y] && (LEDS_CLASS [=m]=y || LEDS_CLASS [=m]=MAC80211 [=y])
  Selected by [m]:
  - IWLEGACY [=m] && NETDEVICES [=y] && WLAN [=y] && WLAN_VENDOR_INTEL [=y]
  - IWLWIFI_LEDS [=y] && NETDEVICES [=y] && WLAN [=y] && WLAN_VENDOR_INTEL [=y] && IWLWIFI [=m] && (LEDS_CLASS [=m]=y || LEDS_CLASS [=m]=IWLWIFI [=m]) && (IWLMVM [=m] || IWLDVM [=m])

aarch64-linux-ld: drivers/net/wireless/ath/ath5k/led.o: in function `ath5k_register_led':
led.c:(.text+0x60): undefined reference to `led_classdev_register_ext'
aarch64-linux-ld: drivers/net/wireless/ath/ath5k/led.o: in function `ath5k_unregister_leds':
led.c:(.text+0x200): undefined reference to `led_classdev_unregister'

For iwlwifi, the dependency is wrong, since this config prevents the
MAC80211_LEDS code from being part of a built-in MAC80211 driver.

For iwlegacy, this is worse because the driver tries to force-enable
the other subsystems, which is both a layering violation and a bug
because it will still fail with MAC80211=y and IWLEGACY=m, leading
to LEDS_CLASS being a module as well.

The actual link failure in the ath5k driver is a result of MAC80211_LEDS
being enabled but not usable. With the Kconfig logic fixed in the
Intel drivers, the ath5k driver works as expected again.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20211204173848.873293-1-arnd@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/intel/iwlegacy/Kconfig | 4 ++--
 drivers/net/wireless/intel/iwlwifi/Kconfig  | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlegacy/Kconfig b/drivers/net/wireless/intel/iwlegacy/Kconfig
index 100f55858b133..490ef62605455 100644
--- a/drivers/net/wireless/intel/iwlegacy/Kconfig
+++ b/drivers/net/wireless/intel/iwlegacy/Kconfig
@@ -2,14 +2,13 @@
 config IWLEGACY
 	tristate
 	select FW_LOADER
-	select NEW_LEDS
-	select LEDS_CLASS
 	select LEDS_TRIGGERS
 	select MAC80211_LEDS
 
 config IWL4965
 	tristate "Intel Wireless WiFi 4965AGN (iwl4965)"
 	depends on PCI && MAC80211
+	depends on LEDS_CLASS=y || LEDS_CLASS=MAC80211
 	select IWLEGACY
 	---help---
 	  This option enables support for
@@ -38,6 +37,7 @@ config IWL4965
 config IWL3945
 	tristate "Intel PRO/Wireless 3945ABG/BG Network Connection (iwl3945)"
 	depends on PCI && MAC80211
+	depends on LEDS_CLASS=y || LEDS_CLASS=MAC80211
 	select IWLEGACY
 	---help---
 	  Select to build the driver supporting the:
diff --git a/drivers/net/wireless/intel/iwlwifi/Kconfig b/drivers/net/wireless/intel/iwlwifi/Kconfig
index 091d621ad25fd..9805e5d13b5a4 100644
--- a/drivers/net/wireless/intel/iwlwifi/Kconfig
+++ b/drivers/net/wireless/intel/iwlwifi/Kconfig
@@ -47,7 +47,7 @@ if IWLWIFI
 
 config IWLWIFI_LEDS
 	bool
-	depends on LEDS_CLASS=y || LEDS_CLASS=IWLWIFI
+	depends on LEDS_CLASS=y || LEDS_CLASS=MAC80211
 	depends on IWLMVM || IWLDVM
 	select LEDS_TRIGGERS
 	select MAC80211_LEDS
-- 
2.34.1

[PATCH AUTOSEL 5.4 07/14] phonet: refcount leak in pep_sock_accep

[Sasha Levin]

From: Hangyu Hua <hbh25y@gmail.com>

[ Upstream commit bcd0f93353326954817a4f9fa55ec57fb38acbb0 ]

sock_hold(sk) is invoked in pep_sock_accept(), but __sock_put(sk) is not
invoked in subsequent failure branches(pep_accept_conn() != 0).

Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Link: https://lore.kernel.org/r/20211209082839.33985-1-hbh25y@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/phonet/pep.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index 4577e43cb7778..ea3b480ce20d9 100644
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -868,6 +868,7 @@ static struct sock *pep_sock_accept(struct sock *sk, int flags, int *errp,
 
 	err = pep_accept_conn(newsk, skb);
 	if (err) {
+		__sock_put(sk);
 		sock_put(newsk);
 		newsk = NULL;
 		goto drop;
-- 
2.34.1

[PATCH AUTOSEL 5.4 08/14] net: bcmgenet: Fix NULL vs IS_ERR() checking

[Sasha Levin]

From: Miaoqian Lin <linmq006@gmail.com>

[ Upstream commit ab8eb798ddabddb2944401bf31ead9671cb97d95 ]

The phy_attach() function does not return NULL. It returns error pointers.

Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/broadcom/genet/bcmmii.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
index ce569b7d3b353..e494f0e57d8ff 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -547,9 +547,9 @@ static int bcmgenet_mii_pd_init(struct bcmgenet_priv *priv)
 		 * Internal or external PHY with MDIO access
 		 */
 		phydev = phy_attach(priv->dev, phy_name, pd->phy_interface);
-		if (!phydev) {
+		if (IS_ERR(phydev)) {
 			dev_err(kdev, "failed to register PHY device\n");
-			return -ENODEV;
+			return PTR_ERR(phydev);
 		}
 	} else {
 		/*
-- 
2.34.1

[PATCH AUTOSEL 5.4 09/14] mac80211: Fix the size used for building probe request

[Sasha Levin]

From: Ilan Peer <ilan.peer@intel.com>

[ Upstream commit f22d981386d12d1513bd2720fb4387b469124d4b ]

Instead of using the hard-coded value of '100' use the correct
scan IEs length as calculated during HW registration to mac80211.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211129152938.0a82d6891719.I8ded1f2e0bccb9e71222c945666bcd86537f2e35@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/mac80211/util.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index decd46b383938..fc326a3fc2e64 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1901,7 +1901,7 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 		chandef.chan = chan;
 
 	skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
-				     100 + ie_len);
+				     local->scan_ies_len + ie_len);
 	if (!skb)
 		return NULL;
 
-- 
2.34.1

[PATCH AUTOSEL 5.4 10/14] mac80211: update channel context before station state

[Sasha Levin]

From: Mordechay Goodstein <mordechay.goodstein@intel.com>

[ Upstream commit 4dde3c3627b52ca515a34f6f4de3898224aa1dd3 ]

Currently channel context is updated only after station got an update about
new assoc state, this results in station using the old channel context.

Fix this by moving the update channel context before updating station,
enabling the driver to immediately use the updated channel context in
the new assoc state.

Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211129152938.1c80c17ffd8a.I94ae31378b363c1182cfdca46c4b7e7165cff984@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/mac80211/sta_info.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 384a95617ee5e..6a1d3935bd3e1 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -651,6 +651,15 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
 
 	list_add_tail_rcu(&sta->list, &local->sta_list);
 
+	/* update channel context before notifying the driver about state
+	 * change, this enables driver using the updated channel context right away.
+	 */
+	if (sta->sta_state >= IEEE80211_STA_ASSOC) {
+		ieee80211_recalc_min_chandef(sta->sdata);
+		if (!sta->sta.support_p2p_ps)
+			ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
+	}
+
 	/* notify driver */
 	err = sta_info_insert_drv_state(local, sdata, sta);
 	if (err)
@@ -658,12 +667,6 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
 
 	set_sta_flag(sta, WLAN_STA_INSERTED);
 
-	if (sta->sta_state >= IEEE80211_STA_ASSOC) {
-		ieee80211_recalc_min_chandef(sta->sdata);
-		if (!sta->sta.support_p2p_ps)
-			ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
-	}
-
 	/* accept BA sessions now */
 	clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
 
-- 
2.34.1

[PATCH AUTOSEL 5.4 11/14] mac80211: do drv_reconfig_complete() before restarting all

[Sasha Levin]

From: Johannes Berg <johannes.berg@intel.com>

[ Upstream commit 13dee10b30c058ee2c58c5da00339cc0d4201aa6 ]

When we reconfigure, the driver might do some things to complete
the reconfiguration. It's strange and could be broken in some
cases because we restart other works (e.g. remain-on-channel and
TX) before this happens, yet only start queues later.

Change this to do the reconfig complete when reconfiguration is
actually complete, not when we've already started doing other
things again.

For iwlwifi, this should fix a race where the reconfig can race
with TX, for ath10k and ath11k that also use this it won't make
a difference because they just start queues there, and mac80211
also stopped the queues and will restart them later as before.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211129152938.cab99f22fe19.Iefe494687f15fd85f77c1b989d1149c8efdfdc36@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/mac80211/util.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index fc326a3fc2e64..73a9e21b060d6 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -2486,6 +2486,13 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 		mutex_unlock(&local->sta_mtx);
 	}
 
+	/*
+	 * If this is for hw restart things are still running.
+	 * We may want to change that later, however.
+	 */
+	if (local->open_count && (!suspended || reconfig_due_to_wowlan))
+		drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
+
 	if (local->in_reconfig) {
 		local->in_reconfig = false;
 		barrier();
@@ -2504,13 +2511,6 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 					IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 					false);
 
-	/*
-	 * If this is for hw restart things are still running.
-	 * We may want to change that later, however.
-	 */
-	if (local->open_count && (!suspended || reconfig_due_to_wowlan))
-		drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
-
 	if (!suspended)
 		return 0;
 
-- 
2.34.1

[PATCH AUTOSEL 5.4 12/14] block: reduce kblockd_mod_delayed_work_on() CPU consumption

[Sasha Levin]

From: Jens Axboe <axboe@kernel.dk>

[ Upstream commit cb2ac2912a9ca7d3d26291c511939a41361d2d83 ]

Dexuan reports that he's seeing spikes of very heavy CPU utilization when
running 24 disks and using the 'none' scheduler. This happens off the
sched restart path, because SCSI requires the queue to be restarted async,
and hence we're hammering on mod_delayed_work_on() to ensure that the work
item gets run appropriately.

Avoid hammering on the timer and just use queue_work_on() if no delay
has been specified.

Reported-and-tested-by: Dexuan Cui <decui@microsoft.com>
Link: https://lore.kernel.org/linux-block/BYAPR21MB1270C598ED214C0490F47400BF719@BYAPR21MB1270.namprd21.prod.outlook.com/
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 block/blk-core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/block/blk-core.c b/block/blk-core.c
index 5808baa950c35..78b7a21cf1d69 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1669,6 +1669,8 @@ EXPORT_SYMBOL(kblockd_schedule_work_on);
 int kblockd_mod_delayed_work_on(int cpu, struct delayed_work *dwork,
 				unsigned long delay)
 {
+	if (!delay)
+		return queue_work_on(cpu, kblockd_workqueue, &dwork->work);
 	return mod_delayed_work_on(cpu, kblockd_workqueue, dwork, delay);
 }
 EXPORT_SYMBOL(kblockd_mod_delayed_work_on);
-- 
2.34.1

[PATCH AUTOSEL 5.4 13/14] net: usb: lan78xx: add Allied Telesis AT29M2-AF

[Sasha Levin]

From: Greg Jesionowski <jesionowskigreg@gmail.com>

[ Upstream commit ef8a0f6eab1ca5d1a75c242c5c7b9d386735fa0a ]

This adds the vendor and product IDs for the AT29M2-AF which is a
lan7801-based device.

Signed-off-by: Greg Jesionowski <jesionowskigreg@gmail.com>
Link: https://lore.kernel.org/r/20211214221027.305784-1-jesionowskigreg@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/lan78xx.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index 2d98373f7a71d..ce3c8f476d75c 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -64,6 +64,8 @@
 #define LAN7801_USB_PRODUCT_ID		(0x7801)
 #define LAN78XX_EEPROM_MAGIC		(0x78A5)
 #define LAN78XX_OTP_MAGIC		(0x78F3)
+#define AT29M2AF_USB_VENDOR_ID		(0x07C9)
+#define AT29M2AF_USB_PRODUCT_ID	(0x0012)
 
 #define	MII_READ			1
 #define	MII_WRITE			0
@@ -4153,6 +4155,10 @@ static const struct usb_device_id products[] = {
 	/* LAN7801 USB Gigabit Ethernet Device */
 	USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7801_USB_PRODUCT_ID),
 	},
+	{
+	/* ATM2-AF USB Gigabit Ethernet Device */
+	USB_DEVICE(AT29M2AF_USB_VENDOR_ID, AT29M2AF_USB_PRODUCT_ID),
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(usb, products);
-- 
2.34.1

[PATCH AUTOSEL 5.4 14/14] Revert "block: reduce kblockd_mod_delayed_work_on() CPU consumption"

[Sasha Levin]

From: Jens Axboe <axboe@kernel.dk>

[ Upstream commit 87959fa16cfbcf76245c11559db1940069621274 ]

This reverts commit cb2ac2912a9ca7d3d26291c511939a41361d2d83.

Alex and the kernel test robot report that this causes a significant
performance regression with BFQ. I can reproduce that result, so let's
revert this one as we're close to -rc6 and we there's no point in trying
to rush a fix.

Link: https://lore.kernel.org/linux-block/1639853092.524jxfaem2.none@localhost/
Link: https://lore.kernel.org/lkml/20211219141852.GH14057@xsang-OptiPlex-9020/
Reported-by: Alex Xu (Hello71) <alex_y_xu@yahoo.ca>
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 block/blk-core.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index 78b7a21cf1d69..5808baa950c35 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1669,8 +1669,6 @@ EXPORT_SYMBOL(kblockd_schedule_work_on);
 int kblockd_mod_delayed_work_on(int cpu, struct delayed_work *dwork,
 				unsigned long delay)
 {
-	if (!delay)
-		return queue_work_on(cpu, kblockd_workqueue, &dwork->work);
 	return mod_delayed_work_on(cpu, kblockd_workqueue, dwork, delay);
 }
 EXPORT_SYMBOL(kblockd_mod_delayed_work_on);
-- 
2.34.1