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domenico
2025-06-24 16:03:39 +02:00
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package/kernel/mac80211/patches/rt2x00/066-rt2800-do-not-enable-watchdog-by-default.patch Normal file
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@@ -0,0 +1,71 @@
From 0f47aeeada2a1fe296258eab9a08ced258009481 Mon Sep 17 00:00:00 2001
From: Stanislaw Gruszka <sgruszka@redhat.com>
Date: Sat, 15 Jun 2019 12:01:00 +0200
Subject: [PATCH 07/15] rt2800: do not enable watchdog by default
Make watchdog disabled by default and add module parameter to enable it.
User will have to create file in /etc/modprobe.d/ with
options rt2800lib watchdog=1
to enable the watchdog or load "rt2800lib watchdog=1" module manually
before loading rt2800{soc,pci,usb} module.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 12 ++++++++++--
drivers/net/wireless/ralink/rt2x00/rt2x00.h | 1 +
drivers/net/wireless/ralink/rt2x00/rt2x00link.c | 2 +-
3 files changed, 12 insertions(+), 3 deletions(-)
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -41,6 +41,10 @@
#include "rt2800lib.h"
#include "rt2800.h"
+static bool modparam_watchdog;
+module_param_named(watchdog, modparam_watchdog, bool, S_IRUGO);
+MODULE_PARM_DESC(watchdog, "Enable watchdog to detect tx/rx hangs and reset hardware if detected");
+
/*
* Register access.
* All access to the CSR registers will go through the methods
@@ -10297,8 +10301,12 @@ int rt2800_probe_hw(struct rt2x00_dev *r
__set_bit(REQUIRE_TASKLET_CONTEXT, &rt2x00dev->cap_flags);
}
- __set_bit(CAPABILITY_RESTART_HW, &rt2x00dev->cap_flags);
- rt2x00dev->link.watchdog_interval = msecs_to_jiffies(100);
+ if (modparam_watchdog) {
+ __set_bit(CAPABILITY_RESTART_HW, &rt2x00dev->cap_flags);
+ rt2x00dev->link.watchdog_interval = msecs_to_jiffies(100);
+ } else {
+ rt2x00dev->link.watchdog_disabled = true;
+ }
/*
* Set the rssi offset.
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
@@ -337,6 +337,7 @@ struct link {
*/
struct delayed_work watchdog_work;
unsigned int watchdog_interval;
+ bool watchdog_disabled;
/*
* Work structure for scheduling periodic AGC adjustments.
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00link.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00link.c
@@ -395,7 +395,7 @@ void rt2x00link_start_watchdog(struct rt
struct link *link = &rt2x00dev->link;
if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) &&
- rt2x00dev->ops->lib->watchdog)
+ rt2x00dev->ops->lib->watchdog && !link->watchdog_disabled)
ieee80211_queue_delayed_work(rt2x00dev->hw,
&link->watchdog_work,
link->watchdog_interval);