1 files changed, 0 insertions, 71 deletions

diff --git a/drivers/net/ipa/ipa_power.c b/drivers/net/ipa/ipa_power.c
index e223886123ce..128a816f6523 100644
--- a/drivers/net/ipa/ipa_power.c
+++ b/drivers/net/ipa/ipa_power.c
@@ -38,15 +38,11 @@
  * enum ipa_power_flag - IPA power flags
  * @IPA_POWER_FLAG_RESUMED:	Whether resume from suspend has been signaled
  * @IPA_POWER_FLAG_SYSTEM:	Hardware is system (not runtime) suspended
- * @IPA_POWER_FLAG_STOPPED:	Modem TX is disabled by ipa_start_xmit()
- * @IPA_POWER_FLAG_STARTED:	Modem TX was enabled by ipa_runtime_resume()
  * @IPA_POWER_FLAG_COUNT:	Number of defined power flags
  */
 enum ipa_power_flag {
 	IPA_POWER_FLAG_RESUMED,
 	IPA_POWER_FLAG_SYSTEM,
-	IPA_POWER_FLAG_STOPPED,
-	IPA_POWER_FLAG_STARTED,
 	IPA_POWER_FLAG_COUNT,		/* Last; not a flag */
 };
 
@@ -55,7 +51,6 @@ enum ipa_power_flag {
  * @dev:		IPA device pointer
  * @core:		IPA core clock
  * @qmp:		QMP handle for AOSS communication
- * @spinlock:		Protects modem TX queue enable/disable
  * @flags:		Boolean state flags
  * @interconnect_count:	Number of elements in interconnect[]
  * @interconnect:	Interconnect array
@@ -64,7 +59,6 @@ struct ipa_power {
 	struct device *dev;
 	struct clk *core;
 	struct qmp *qmp;
-	spinlock_t spinlock;	/* used with STOPPED/STARTED power flags */
 	DECLARE_BITMAP(flags, IPA_POWER_FLAG_COUNT);
 	u32 interconnect_count;
 	struct icc_bulk_data interconnect[] __counted_by(interconnect_count);
@@ -233,70 +227,6 @@ void ipa_power_suspend_handler(struct ipa *ipa, enum ipa_irq_id irq_id)
 	ipa_interrupt_suspend_clear_all(ipa->interrupt);
 }
 
-/* The next few functions coordinate stopping and starting the modem
- * network device transmit queue.
- *
- * Transmit can be running concurrent with power resume, and there's a
- * chance the resume completes before the transmit path stops the queue,
- * leaving the queue in a stopped state.  The next two functions are used
- * to avoid this: ipa_power_modem_queue_stop() is used by ipa_start_xmit()
- * to conditionally stop the TX queue; and ipa_power_modem_queue_start()
- * is used by ipa_runtime_resume() to conditionally restart it.
- *
- * Two flags and a spinlock are used.  If the queue is stopped, the STOPPED
- * power flag is set.  And if the queue is started, the STARTED flag is set.
- * The queue is only started on resume if the STOPPED flag is set.  And the
- * queue is only started in ipa_start_xmit() if the STARTED flag is *not*
- * set.  As a result, the queue remains operational if the two activites
- * happen concurrently regardless of the order they complete.  The spinlock
- * ensures the flag and TX queue operations are done atomically.
- *
- * The first function stops the modem netdev transmit queue, but only if
- * the STARTED flag is *not* set.  That flag is cleared if it was set.
- * If the queue is stopped, the STOPPED flag is set.  This is called only
- * from the power ->runtime_resume operation.
- */
-void ipa_power_modem_queue_stop(struct ipa *ipa)
-{
-	struct ipa_power *power = ipa->power;
-	unsigned long flags;
-
-	spin_lock_irqsave(&power->spinlock, flags);
-
-	if (!__test_and_clear_bit(IPA_POWER_FLAG_STARTED, power->flags)) {
-		netif_stop_queue(ipa->modem_netdev);
-		__set_bit(IPA_POWER_FLAG_STOPPED, power->flags);
-	}
-
-	spin_unlock_irqrestore(&power->spinlock, flags);
-}
-
-/* This function starts the modem netdev transmit queue, but only if the
- * STOPPED flag is set.  That flag is cleared if it was set.  If the queue
- * was restarted, the STARTED flag is set; this allows ipa_start_xmit()
- * to skip stopping the queue in the event of a race.
- */
-void ipa_power_modem_queue_wake(struct ipa *ipa)
-{
-	struct ipa_power *power = ipa->power;
-	unsigned long flags;
-
-	spin_lock_irqsave(&power->spinlock, flags);
-
-	if (__test_and_clear_bit(IPA_POWER_FLAG_STOPPED, power->flags)) {
-		__set_bit(IPA_POWER_FLAG_STARTED, power->flags);
-		netif_wake_queue(ipa->modem_netdev);
-	}
-
-	spin_unlock_irqrestore(&power->spinlock, flags);
-}
-
-/* This function clears the STARTED flag once the TX queue is operating */
-void ipa_power_modem_queue_active(struct ipa *ipa)
-{
-	clear_bit(IPA_POWER_FLAG_STARTED, ipa->power->flags);
-}
-
 static int ipa_power_retention_init(struct ipa_power *power)
 {
 	struct qmp *qmp = qmp_get(power->dev);
@@ -385,7 +315,6 @@ ipa_power_init(struct device *dev, const struct ipa_power_data *data)
 	}
 	power->dev = dev;
 	power->core = clk;
-	spin_lock_init(&power->spinlock);
 	power->interconnect_count = data->interconnect_count;
 
 	ret = ipa_interconnect_init(power, data->interconnect_data);