From 0f47aeeada2a1fe296258eab9a08ced258009481 Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Sat, 15 Jun 2019 12:01:00 +0200 Subject: [PATCH] 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 Signed-off-by: Kalle Valo --- 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(-) diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c index 0fb519f2b83f..c9b957ac5733 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c @@ -30,6 +30,10 @@ #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 @@ -10286,8 +10290,12 @@ int rt2800_probe_hw(struct rt2x00_dev *rt2x00dev) __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. diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00.h b/drivers/net/wireless/ralink/rt2x00/rt2x00.h index 7c7cced009bd..7e43690a861c 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h @@ -326,6 +326,7 @@ struct link { */ struct delayed_work watchdog_work; unsigned int watchdog_interval; + bool watchdog_disabled; /* * Work structure for scheduling periodic AGC adjustments. diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00link.c b/drivers/net/wireless/ralink/rt2x00/rt2x00link.c index 15ebebf88e72..b052c96347d6 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00link.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00link.c @@ -384,7 +384,7 @@ void rt2x00link_start_watchdog(struct rt2x00_dev *rt2x00dev) 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); -- 2.30.2