mac80211: rt2x00: import and update pending patches

Imported from patchwork, patches marked with '=' have already been in
our tree:
 [v3,1/4] cfg80211: add ratelimited variants of err and warn
 [v3,2/4] rt2x00: use ratelimited variants dev_warn/dev_err
 [v3,3/4] rt2x00: check number of EPROTO errors
=[v3,4/4] rt2x00: do not print error when queue is full

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

package/kernel/mac80211/patches/rt2x00/020-cfg80211-add-ratelimited-variants-of-err-and-warn.patch

@@ -0,0 +1,39 @@
+From patchwork Tue Mar 12 09:51:40 2019
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+X-Patchwork-Submitter: Stanislaw Gruszka <sgruszka@redhat.com>
+X-Patchwork-Id: 10848957
+X-Patchwork-Delegate: johannes@sipsolutions.net
+From: Stanislaw Gruszka <sgruszka@redhat.com>
+To: linux-wireless@vger.kernel.org
+Cc: =?utf-8?q?Tomislav_Po=C5=BEega?= <pozega.tomislav@gmail.com>,
+ Daniel Golle <daniel@makrotopia.org>, Felix Fietkau <nbd@nbd.name>,
+ Mathias Kresin <dev@kresin.me>
+Subject: [PATCH v3 1/4] cfg80211: add ratelimited variants of err and warn
+Date: Tue, 12 Mar 2019 10:51:40 +0100
+Message-Id: <1552384303-29529-2-git-send-email-sgruszka@redhat.com>
+In-Reply-To: <1552384303-29529-1-git-send-email-sgruszka@redhat.com>
+References: <1552384303-29529-1-git-send-email-sgruszka@redhat.com>
+
+wiphy_{err,warn}_ratelimited will be used by rt2x00
+
+Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
+---
+ include/net/cfg80211.h | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/include/net/cfg80211.h
++++ b/include/net/cfg80211.h
+@@ -6588,6 +6588,11 @@ int cfg80211_external_auth_request(struc
+ #define wiphy_info(wiphy, format, args...)			\
+ 	dev_info(&(wiphy)->dev, format, ##args)
+ 
++#define wiphy_err_ratelimited(wiphy, format, args...)		\
++	dev_err_ratelimited(&(wiphy)->dev, format, ##args)
++#define wiphy_warn_ratelimited(wiphy, format, args...)		\
++	dev_warn_ratelimited(&(wiphy)->dev, format, ##args)
++
+ #define wiphy_debug(wiphy, format, args...)			\
+ 	wiphy_printk(KERN_DEBUG, wiphy, format, ##args)
+ 

package/kernel/mac80211/patches/rt2x00/021-rt2x00-use-ratelimited-variants-dev_warn-dev_err.patch

@@ -0,0 +1,42 @@
+From patchwork Tue Mar 12 09:51:41 2019
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+X-Patchwork-Submitter: Stanislaw Gruszka <sgruszka@redhat.com>
+X-Patchwork-Id: 10848959
+X-Patchwork-Delegate: kvalo@adurom.com
+From: Stanislaw Gruszka <sgruszka@redhat.com>
+To: linux-wireless@vger.kernel.org
+Cc: =?utf-8?q?Tomislav_Po=C5=BEega?= <pozega.tomislav@gmail.com>,
+ Daniel Golle <daniel@makrotopia.org>, Felix Fietkau <nbd@nbd.name>,
+ Mathias Kresin <dev@kresin.me>
+Subject: [PATCH v3 2/4] rt2x00: use ratelimited variants dev_warn/dev_err
+Date: Tue, 12 Mar 2019 10:51:41 +0100
+Message-Id: <1552384303-29529-3-git-send-email-sgruszka@redhat.com>
+In-Reply-To: <1552384303-29529-1-git-send-email-sgruszka@redhat.com>
+References: <1552384303-29529-1-git-send-email-sgruszka@redhat.com>
+
+As reported by Randy we can overwhelm logs on some USB error conditions.
+To avoid that use dev_warn_ratelimited() and dev_err_ratelimitd().
+
+Reported-and-tested-by: Randy Oostdyk <linux-kernel@oostdyk.com>
+Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
+---
+ drivers/net/wireless/ralink/rt2x00/rt2x00.h | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
+@@ -69,10 +69,10 @@
+ 	printk(KERN_ERR KBUILD_MODNAME ": %s: Error - " fmt,		\
+ 	       __func__, ##__VA_ARGS__)
+ #define rt2x00_err(dev, fmt, ...)					\
+-	wiphy_err((dev)->hw->wiphy, "%s: Error - " fmt,			\
++	wiphy_err_ratelimited((dev)->hw->wiphy, "%s: Error - " fmt,	\
+ 		  __func__, ##__VA_ARGS__)
+ #define rt2x00_warn(dev, fmt, ...)					\
+-	wiphy_warn((dev)->hw->wiphy, "%s: Warning - " fmt,		\
++	wiphy_warn_ratelimited((dev)->hw->wiphy, "%s: Warning - " fmt,	\
+ 		   __func__, ##__VA_ARGS__)
+ #define rt2x00_info(dev, fmt, ...)					\
+ 	wiphy_info((dev)->hw->wiphy, "%s: Info - " fmt,			\

package/kernel/mac80211/patches/rt2x00/022-rt2x00-check-number-of-EPROTO-errors.patch

@@ -0,0 +1,96 @@
+From patchwork Tue Mar 12 09:51:42 2019
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+X-Patchwork-Submitter: Stanislaw Gruszka <sgruszka@redhat.com>
+X-Patchwork-Id: 10848961
+X-Patchwork-Delegate: kvalo@adurom.com
+From: Stanislaw Gruszka <sgruszka@redhat.com>
+To: linux-wireless@vger.kernel.org
+Cc: =?utf-8?q?Tomislav_Po=C5=BEega?= <pozega.tomislav@gmail.com>,
+ Daniel Golle <daniel@makrotopia.org>, Felix Fietkau <nbd@nbd.name>,
+ Mathias Kresin <dev@kresin.me>
+Subject: [PATCH v3 3/4] rt2x00: check number of EPROTO errors
+Date: Tue, 12 Mar 2019 10:51:42 +0100
+Message-Id: <1552384303-29529-4-git-send-email-sgruszka@redhat.com>
+In-Reply-To: <1552384303-29529-1-git-send-email-sgruszka@redhat.com>
+References: <1552384303-29529-1-git-send-email-sgruszka@redhat.com>
+
+Some USB host devices/drivers on some conditions can always return
+EPROTO error on submitted URBs. That can cause infinity loop in the
+rt2x00 driver.
+
+Since we can have single EPROTO errors we can not mark as device as
+removed to avoid infinity loop. However we can count consecutive
+EPROTO errors and mark device as removed if get lot of it.
+I choose number 10 as threshold.
+
+Reported-and-tested-by: Randy Oostdyk <linux-kernel@oostdyk.com>
+Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
+---
+ drivers/net/wireless/ralink/rt2x00/rt2x00.h    |  1 +
+ drivers/net/wireless/ralink/rt2x00/rt2x00usb.c | 22 +++++++++++++++++++---
+ 2 files changed, 20 insertions(+), 3 deletions(-)
+
+--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
+@@ -1017,6 +1017,7 @@ struct rt2x00_dev {
+ 	unsigned int extra_tx_headroom;
+ 
+ 	struct usb_anchor *anchor;
++	unsigned int num_proto_errs;
+ 
+ 	/* Clock for System On Chip devices. */
+ 	struct clk *clk;
+--- a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
+@@ -31,6 +31,22 @@
+ #include "rt2x00.h"
+ #include "rt2x00usb.h"
+ 
++static bool rt2x00usb_check_usb_error(struct rt2x00_dev *rt2x00dev, int status)
++{
++	if (status == -ENODEV || status == -ENOENT)
++		return true;
++
++	if (status == -EPROTO || status == -ETIMEDOUT)
++		rt2x00dev->num_proto_errs++;
++	else
++		rt2x00dev->num_proto_errs = 0;
++
++	if (rt2x00dev->num_proto_errs > 3)
++		return true;
++
++	return false;
++}
++
+ /*
+  * Interfacing with the HW.
+  */
+@@ -57,7 +73,7 @@ int rt2x00usb_vendor_request(struct rt2x
+ 		if (status >= 0)
+ 			return 0;
+ 
+-		if (status == -ENODEV || status == -ENOENT) {
++		if (rt2x00usb_check_usb_error(rt2x00dev, status)) {
+ 			/* Device has disappeared. */
+ 			clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
+ 			break;
+@@ -321,7 +337,7 @@ static bool rt2x00usb_kick_tx_entry(stru
+ 
+ 	status = usb_submit_urb(entry_priv->urb, GFP_ATOMIC);
+ 	if (status) {
+-		if (status == -ENODEV || status == -ENOENT)
++		if (rt2x00usb_check_usb_error(rt2x00dev, status))
+ 			clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
+ 		set_bit(ENTRY_DATA_IO_FAILED, &entry->flags);
+ 		rt2x00lib_dmadone(entry);
+@@ -410,7 +426,7 @@ static bool rt2x00usb_kick_rx_entry(stru
+ 
+ 	status = usb_submit_urb(entry_priv->urb, GFP_ATOMIC);
+ 	if (status) {
+-		if (status == -ENODEV || status == -ENOENT)
++		if (rt2x00usb_check_usb_error(rt2x00dev, status))
+ 			clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
+ 		set_bit(ENTRY_DATA_IO_FAILED, &entry->flags);
+ 		rt2x00lib_dmadone(entry);

package/kernel/mac80211/patches/rt2x00/023-rt2x00-do-not-print-error-when-queue-is-full.patch

@@ -1,10 +1,20 @@
-From 1a8a8989b779e51e4652a30e9f22c36a1b6ffc4b Mon Sep 17 00:00:00 2001
-From: Stanislaw Gruszka <sgruszka@redhat.com>
-Date: Thu, 20 Dec 2018 16:16:11 +0100
+From patchwork Tue Mar 12 09:51:43 2019
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
 X-Patchwork-Submitter: Stanislaw Gruszka <sgruszka@redhat.com>
-X-Patchwork-Id: 10739037
+X-Patchwork-Id: 10848963
 X-Patchwork-Delegate: kvalo@adurom.com
-Subject: [PATCH 20/28] rt2x00: do not print error when queue is full
+From: Stanislaw Gruszka <sgruszka@redhat.com>
+To: linux-wireless@vger.kernel.org
+Cc: =?utf-8?q?Tomislav_Po=C5=BEega?= <pozega.tomislav@gmail.com>,
+ Daniel Golle <daniel@makrotopia.org>, Felix Fietkau <nbd@nbd.name>,
+ Mathias Kresin <dev@kresin.me>
+Subject: [PATCH v3 4/4] rt2x00: do not print error when queue is full
+Date: Tue, 12 Mar 2019 10:51:43 +0100
+Message-Id: <1552384303-29529-5-git-send-email-sgruszka@redhat.com>
+In-Reply-To: <1552384303-29529-1-git-send-email-sgruszka@redhat.com>
+References: <1552384303-29529-1-git-send-email-sgruszka@redhat.com>
 
 For unknown reasons printk() on some context can cause CPU hung on
 embedded MT7620 AP/router MIPS platforms. What can result on wifi