wifi: rt2x00: make watchdog param per device

We can run PCI/MMIO devices together with USB devices in the system.
Make watchdog parameter per device to avoid situation when plugin
USB device change modparam_watchdog for PCI/MMIO device.
Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Tested-by: Shiji Yang <yangshiji66@outlook.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20231126195358.500259-1-stf_xl@wp.pl

drivers/net/wireless/ralink/rt2x00/rt2800lib.c

@@ -1353,10 +1353,10 @@ void rt2800_watchdog(struct rt2x00_dev *rt2x00dev)
 	if (test_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags))
 		return;
 
-	if (modparam_watchdog & RT2800_WATCHDOG_DMA_BUSY)
+	if (rt2x00dev->link.watchdog & RT2800_WATCHDOG_DMA_BUSY)
 		reset = rt2800_watchdog_dma_busy(rt2x00dev);
 
-	if (modparam_watchdog & RT2800_WATCHDOG_HANG)
+	if (rt2x00dev->link.watchdog & RT2800_WATCHDOG_HANG)
 		reset = rt2800_watchdog_hung(rt2x00dev) || reset;
 
 	if (reset)
@@ -12065,14 +12065,13 @@ int rt2800_probe_hw(struct rt2x00_dev *rt2x00dev)
 		__set_bit(REQUIRE_TASKLET_CONTEXT, &rt2x00dev->cap_flags);
 	}
 
+	rt2x00dev->link.watchdog = modparam_watchdog;
 	/* USB NICs don't support DMA watchdog as INT_SOURCE_CSR is invalid */
 	if (rt2x00_is_usb(rt2x00dev))
-		modparam_watchdog &= ~RT2800_WATCHDOG_DMA_BUSY;
-	if (modparam_watchdog) {
+		rt2x00dev->link.watchdog &= ~RT2800_WATCHDOG_DMA_BUSY;
+	if (rt2x00dev->link.watchdog) {
 		__set_bit(CAPABILITY_RESTART_HW, &rt2x00dev->cap_flags);
 		rt2x00dev->link.watchdog_interval = msecs_to_jiffies(100);
-	} else {
-		rt2x00dev->link.watchdog_disabled = true;
 	}
 
 	/*

drivers/net/wireless/ralink/rt2x00/rt2x00.h

@@ -334,7 +334,7 @@ struct link {
 	 */
 	struct delayed_work watchdog_work;
 	unsigned int watchdog_interval;
-	bool watchdog_disabled;
+	unsigned int watchdog;
 
 	/*
 	 * Work structure for scheduling periodic AGC adjustments.

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 && !link->watchdog_disabled)
+	    rt2x00dev->ops->lib->watchdog && link->watchdog)
 		ieee80211_queue_delayed_work(rt2x00dev->hw,
 					     &link->watchdog_work,
 					     link->watchdog_interval);