mac80211: brcm: backport 5.5 and 5.6 kernel patches

This update doesn't include:
3b1e0a7bdfee brcmfmac: add support for SAE authentication offload
be898fed355e brcmfmac: send port authorized event for FT-802.1X
due to nl80211 dependencies.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

package/kernel/mac80211/patches/brcm/101-v5.5-0001-brcmfmac-don-t-WARN-when-there-are-no-requests.patch

@@ -0,0 +1,28 @@
+From 1524cbf3621576c639405e7aabeac415f9617c8d Mon Sep 17 00:00:00 2001
+From: Adrian Ratiu <adrian.ratiu@collabora.com>
+Date: Wed, 25 Sep 2019 16:44:57 +0300
+Subject: [PATCH] brcmfmac: don't WARN when there are no requests
+
+When n_reqs == 0 there is nothing to do so it doesn't make sense to
+search for requests and issue a warning because none is found.
+
+Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
+Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c
+@@ -57,6 +57,10 @@ static int brcmf_pno_remove_request(stru
+ 
+ 	mutex_lock(&pi->req_lock);
+ 
++	/* Nothing to do if we have no requests */
++	if (pi->n_reqs == 0)
++		goto done;
++
+ 	/* find request */
+ 	for (i = 0; i < pi->n_reqs; i++) {
+ 		if (pi->reqs[i]->reqid == reqid)

package/kernel/mac80211/patches/brcm/101-v5.5-0002-brcmfmac-fix-suspend-resume-when-power-is-cut-off.patch

@@ -0,0 +1,109 @@
+From e0ae4bac22effbd644add326f658a3aeeb8d45ee Mon Sep 17 00:00:00 2001
+From: Adrian Ratiu <adrian.ratiu@collabora.com>
+Date: Wed, 25 Sep 2019 16:44:58 +0300
+Subject: [PATCH] brcmfmac: fix suspend/resume when power is cut off
+
+brcmfmac assumed the wifi device always remains powered on and thus
+hardcoded the MMC_PM_KEEP_POWER flag expecting the wifi device to
+remain on even during suspend/resume cycles.
+
+This is not always the case, some appliances cut power to everything
+connected via SDIO for efficiency reasons and this leads to wifi not
+being usable after coming out of suspend because the device was not
+correctly reinitialized.
+
+So we check for the keep_power capability and if it's not present then
+we remove the device and probe it again during resume to mirror what's
+happening in hardware and ensure correct reinitialization in the case
+when MMC_PM_KEEP_POWER is not supported.
+
+Suggested-by: Gustavo Padovan <gustavo.padovan@collabora.com>
+Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ .../broadcom/brcm80211/brcmfmac/bcmsdh.c      | 53 ++++++++++++++-----
+ 1 file changed, 39 insertions(+), 14 deletions(-)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+@@ -1108,7 +1108,8 @@ static int brcmf_ops_sdio_suspend(struct
+ 	struct sdio_func *func;
+ 	struct brcmf_bus *bus_if;
+ 	struct brcmf_sdio_dev *sdiodev;
+-	mmc_pm_flag_t sdio_flags;
++	mmc_pm_flag_t pm_caps, sdio_flags;
++	int ret = 0;
+ 
+ 	func = container_of(dev, struct sdio_func, dev);
+ 	brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
+@@ -1119,19 +1120,33 @@ static int brcmf_ops_sdio_suspend(struct
+ 	bus_if = dev_get_drvdata(dev);
+ 	sdiodev = bus_if->bus_priv.sdio;
+ 
+-	brcmf_sdiod_freezer_on(sdiodev);
+-	brcmf_sdio_wd_timer(sdiodev->bus, 0);
++	pm_caps = sdio_get_host_pm_caps(func);
+ 
+-	sdio_flags = MMC_PM_KEEP_POWER;
+-	if (sdiodev->wowl_enabled) {
+-		if (sdiodev->settings->bus.sdio.oob_irq_supported)
+-			enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
+-		else
+-			sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
++	if (pm_caps & MMC_PM_KEEP_POWER) {
++		/* preserve card power during suspend */
++		brcmf_sdiod_freezer_on(sdiodev);
++		brcmf_sdio_wd_timer(sdiodev->bus, 0);
++
++		sdio_flags = MMC_PM_KEEP_POWER;
++		if (sdiodev->wowl_enabled) {
++			if (sdiodev->settings->bus.sdio.oob_irq_supported)
++				enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
++			else
++				sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
++		}
++
++		if (sdio_set_host_pm_flags(sdiodev->func1, sdio_flags))
++			brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
++
++	} else {
++		/* power will be cut so remove device, probe again in resume */
++		brcmf_sdiod_intr_unregister(sdiodev);
++		ret = brcmf_sdiod_remove(sdiodev);
++		if (ret)
++			brcmf_err("Failed to remove device on suspend\n");
+ 	}
+-	if (sdio_set_host_pm_flags(sdiodev->func1, sdio_flags))
+-		brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
+-	return 0;
++
++	return ret;
+ }
+ 
+ static int brcmf_ops_sdio_resume(struct device *dev)
+@@ -1139,13 +1154,23 @@ static int brcmf_ops_sdio_resume(struct
+ 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+ 	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ 	struct sdio_func *func = container_of(dev, struct sdio_func, dev);
++	mmc_pm_flag_t pm_caps = sdio_get_host_pm_caps(func);
++	int ret = 0;
+ 
+ 	brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
+ 	if (func->num != 2)
+ 		return 0;
+ 
+-	brcmf_sdiod_freezer_off(sdiodev);
+-	return 0;
++	if (!(pm_caps & MMC_PM_KEEP_POWER)) {
++		/* bus was powered off and device removed, probe again */
++		ret = brcmf_sdiod_probe(sdiodev);
++		if (ret)
++			brcmf_err("Failed to probe device on resume\n");
++	} else {
++		brcmf_sdiod_freezer_off(sdiodev);
++	}
++
++	return ret;
+ }
+ 
+ static const struct dev_pm_ops brcmf_sdio_pm_ops = {

package/kernel/mac80211/patches/brcm/103-v5.5-brcmfmac-remove-set-but-not-used-variable-mpnum-nsp-.patch

@@ -0,0 +1,58 @@
+From 7af496b9eb0433bc4cb478c9a46f85509cdb5541 Mon Sep 17 00:00:00 2001
+From: zhengbin <zhengbin13@huawei.com>
+Date: Sat, 16 Nov 2019 15:22:47 +0800
+Subject: [PATCH] brcmfmac: remove set but not used variable
+ 'mpnum','nsp','nmp'
+
+Fixes gcc '-Wunused-but-set-variable' warning:
+
+drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c: In function brcmf_chip_dmp_get_regaddr:
+drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c:790:5: warning: variable mpnum set but not used [-Wunused-but-set-variable]
+drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c: In function brcmf_chip_dmp_erom_scan:
+drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c:866:10: warning: variable nsp set but not used [-Wunused-but-set-variable]
+drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c: In function brcmf_chip_dmp_erom_scan:
+drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c:866:5: warning: variable nmp set but not used [-Wunused-but-set-variable]
+
+Reported-by: Hulk Robot <hulkci@huawei.com>
+Signed-off-by: zhengbin <zhengbin13@huawei.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c | 6 +-----
+ 1 file changed, 1 insertion(+), 5 deletions(-)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c
+@@ -778,7 +778,6 @@ static int brcmf_chip_dmp_get_regaddr(st
+ {
+ 	u8 desc;
+ 	u32 val, szdesc;
+-	u8 mpnum = 0;
+ 	u8 stype, sztype, wraptype;
+ 
+ 	*regbase = 0;
+@@ -786,7 +785,6 @@ static int brcmf_chip_dmp_get_regaddr(st
+ 
+ 	val = brcmf_chip_dmp_get_desc(ci, eromaddr, &desc);
+ 	if (desc == DMP_DESC_MASTER_PORT) {
+-		mpnum = (val & DMP_MASTER_PORT_NUM) >> DMP_MASTER_PORT_NUM_S;
+ 		wraptype = DMP_SLAVE_TYPE_MWRAP;
+ 	} else if (desc == DMP_DESC_ADDRESS) {
+ 		/* revert erom address */
+@@ -854,7 +852,7 @@ int brcmf_chip_dmp_erom_scan(struct brcm
+ 	u8 desc_type = 0;
+ 	u32 val;
+ 	u16 id;
+-	u8 nmp, nsp, nmw, nsw, rev;
++	u8 nmw, nsw, rev;
+ 	u32 base, wrap;
+ 	int err;
+ 
+@@ -880,8 +878,6 @@ int brcmf_chip_dmp_erom_scan(struct brcm
+ 			return -EFAULT;
+ 
+ 		/* only look at cores with master port(s) */
+-		nmp = (val & DMP_COMP_NUM_MPORT) >> DMP_COMP_NUM_MPORT_S;
+-		nsp = (val & DMP_COMP_NUM_SPORT) >> DMP_COMP_NUM_SPORT_S;
+ 		nmw = (val & DMP_COMP_NUM_MWRAP) >> DMP_COMP_NUM_MWRAP_S;
+ 		nsw = (val & DMP_COMP_NUM_SWRAP) >> DMP_COMP_NUM_SWRAP_S;
+ 		rev = (val & DMP_COMP_REVISION) >> DMP_COMP_REVISION_S;

package/kernel/mac80211/patches/brcm/110-v5.6-brcmfmac-Fix-memory-leak-in-brcmf_p2p_create_p2pdev.patch

@@ -0,0 +1,29 @@
+From 5cc509aa83c6acd2c5cd94f99065c39d2bd0a490 Mon Sep 17 00:00:00 2001
+From: Navid Emamdoost <navid.emamdoost@gmail.com>
+Date: Fri, 22 Nov 2019 13:19:48 -0600
+Subject: [PATCH] brcmfmac: Fix memory leak in brcmf_p2p_create_p2pdev()
+
+In the implementation of brcmf_p2p_create_p2pdev() the allocated memory
+for p2p_vif is leaked when the mac address is the same as primary
+interface. To fix this, go to error path to release p2p_vif via
+brcmf_free_vif().
+
+Fixes: cb746e47837a ("brcmfmac: check p2pdev mac address uniqueness")
+Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
+@@ -2092,7 +2092,8 @@ static struct wireless_dev *brcmf_p2p_cr
+ 	/* firmware requires unique mac address for p2pdev interface */
+ 	if (addr && ether_addr_equal(addr, pri_ifp->mac_addr)) {
+ 		bphy_err(drvr, "discovery vif must be different from primary interface\n");
+-		return ERR_PTR(-EINVAL);
++		err = -EINVAL;
++		goto fail;
+ 	}
+ 
+ 	brcmf_p2p_generate_bss_mac(p2p, addr);

package/kernel/mac80211/patches/brcm/111-v5.6-brcmfmac-Fix-use-after-free-in-brcmf_sdio_readframes.patch

@@ -0,0 +1,31 @@
+From 216b44000ada87a63891a8214c347e05a4aea8fe Mon Sep 17 00:00:00 2001
+From: Dan Carpenter <dan.carpenter@oracle.com>
+Date: Tue, 3 Dec 2019 12:58:55 +0300
+Subject: [PATCH] brcmfmac: Fix use after free in brcmf_sdio_readframes()
+
+The brcmu_pkt_buf_free_skb() function frees "pkt" so it leads to a
+static checker warning:
+
+    drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:1974 brcmf_sdio_readframes()
+    error: dereferencing freed memory 'pkt'
+
+It looks like there was supposed to be a continue after we free "pkt".
+
+Fixes: 4754fceeb9a6 ("brcmfmac: streamline SDIO read frame routine")
+Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
+Acked-by: Franky Lin <franky.lin@broadcom.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+@@ -1935,6 +1935,7 @@ static uint brcmf_sdio_readframes(struct
+ 					       BRCMF_SDIO_FT_NORMAL)) {
+ 				rd->len = 0;
+ 				brcmu_pkt_buf_free_skb(pkt);
++				continue;
+ 			}
+ 			bus->sdcnt.rx_readahead_cnt++;
+ 			if (rd->len != roundup(rd_new.len, 16)) {

package/kernel/mac80211/patches/brcm/112-v5.6-brcmfmac-set-interface-carrier-to-off-by-default.patch

@@ -0,0 +1,29 @@
+From 8d9627b05b2c33e4468e65739eb7caf9c3f274d8 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 10 Dec 2019 12:35:55 +0100
+Subject: [PATCH] brcmfmac: set interface carrier to off by default
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+It's important as brcmfmac creates one main interface for each PHY and
+doesn't allow deleting it. Not setting carrier could result in other
+subsystems misbehaving (e.g. LEDs "netdev" trigger turning LED on).
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+@@ -678,6 +678,8 @@ int brcmf_net_attach(struct brcmf_if *if
+ 		goto fail;
+ 	}
+ 
++	netif_carrier_off(ndev);
++
+ 	netdev_set_priv_destructor(ndev, brcmf_cfg80211_free_netdev);
+ 	brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
+ 	return 0;

package/kernel/mac80211/patches/brcm/113-v5.6-brcmfmac-fix-interface-sanity-check.patch

@@ -0,0 +1,40 @@
+From 3428fbcd6e6c0850b1a8b2a12082b7b2aabb3da3 Mon Sep 17 00:00:00 2001
+From: Johan Hovold <johan@kernel.org>
+Date: Tue, 10 Dec 2019 12:44:22 +0100
+Subject: [PATCH] brcmfmac: fix interface sanity check
+
+Make sure to use the current alternate setting when verifying the
+interface descriptors to avoid binding to an invalid interface.
+
+Failing to do so could cause the driver to misbehave or trigger a WARN()
+in usb_submit_urb() that kernels with panic_on_warn set would choke on.
+
+Fixes: 71bb244ba2fd ("brcm80211: fmac: add USB support for bcm43235/6/8 chipsets")
+Cc: stable <stable@vger.kernel.org>     # 3.4
+Cc: Arend van Spriel <arend@broadcom.com>
+Signed-off-by: Johan Hovold <johan@kernel.org>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
+@@ -1348,7 +1348,7 @@ brcmf_usb_probe(struct usb_interface *in
+ 		goto fail;
+ 	}
+ 
+-	desc = &intf->altsetting[0].desc;
++	desc = &intf->cur_altsetting->desc;
+ 	if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
+ 	    (desc->bInterfaceSubClass != 2) ||
+ 	    (desc->bInterfaceProtocol != 0xff)) {
+@@ -1361,7 +1361,7 @@ brcmf_usb_probe(struct usb_interface *in
+ 
+ 	num_of_eps = desc->bNumEndpoints;
+ 	for (ep = 0; ep < num_of_eps; ep++) {
+-		endpoint = &intf->altsetting[0].endpoint[ep].desc;
++		endpoint = &intf->cur_altsetting->endpoint[ep].desc;
+ 		endpoint_num = usb_endpoint_num(endpoint);
+ 		if (!usb_endpoint_xfer_bulk(endpoint))
+ 			continue;

package/kernel/mac80211/patches/brcm/860-brcmfmac-register-wiphy-s-during-module_init.patch

@@ -13,7 +13,7 @@ Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
 
 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
-@@ -1477,6 +1477,7 @@ int __init brcmf_core_init(void)
+@@ -1479,6 +1479,7 @@ int __init brcmf_core_init(void)
  {
  	if (!schedule_work(&brcmf_driver_work))
  		return -EBUSY;