linux-kernel - [PATCH net-next 3/6] net: ipa: kill the IPA_POWER_FLAG

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Date: Fri, 23 Feb 2024 07:39:27 -0600
From: Alex Elder <elder@...aro.org>
To: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com
Cc: mka@...omium.org,
	andersson@...nel.org,
	quic_cpratapa@...cinc.com,
	quic_avuyyuru@...cinc.com,
	quic_jponduru@...cinc.com,
	quic_subashab@...cinc.com,
	elder@...nel.org,
	netdev@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH net-next 3/6] net: ipa: kill the IPA_POWER_FLAG_RESUMED flag

The IPA_POWER_FLAG_RESUMED was originally used to avoid calling
pm_wakeup_dev_event() more than once when handling a SUSPEND
interrupt.  This call is no longer made, so there' no need for the
flag, so get rid of it.

That leaves no more IPA power flags usefully defined, so just get
rid of the bitmap in the IPA power structure and the definition of
the ipa_power_flag enumerated type.

Signed-off-by: Alex Elder <elder@...aro.org>
---
 drivers/net/ipa/ipa_power.c | 21 ---------------------
 1 file changed, 21 deletions(-)

diff --git a/drivers/net/ipa/ipa_power.c b/drivers/net/ipa/ipa_power.c
index be9e859e853fb..eee251d67f81a 100644
--- a/drivers/net/ipa/ipa_power.c
+++ b/drivers/net/ipa/ipa_power.c
@@ -34,22 +34,11 @@
 
 #define IPA_AUTOSUSPEND_DELAY	500	/* milliseconds */
 
-/**
- * enum ipa_power_flag - IPA power flags
- * @IPA_POWER_FLAG_RESUMED:	Whether resume from suspend has been signaled
- * @IPA_POWER_FLAG_COUNT:	Number of defined power flags
- */
-enum ipa_power_flag {
-	IPA_POWER_FLAG_RESUMED,
-	IPA_POWER_FLAG_COUNT,		/* Last; not a flag */
-};
-
 /**
  * struct ipa_power - IPA power management information
  * @dev:		IPA device pointer
  * @core:		IPA core clock
  * @qmp:		QMP handle for AOSS communication
- * @flags:		Boolean state flags
  * @interconnect_count:	Number of elements in interconnect[]
  * @interconnect:	Interconnect array
  */
@@ -57,7 +46,6 @@ struct ipa_power {
 	struct device *dev;
 	struct clk *core;
 	struct qmp *qmp;
-	DECLARE_BITMAP(flags, IPA_POWER_FLAG_COUNT);
 	u32 interconnect_count;
 	struct icc_bulk_data interconnect[] __counted_by(interconnect_count);
 };
@@ -139,7 +127,6 @@ static int ipa_runtime_suspend(struct device *dev)
 
 	/* Endpoints aren't usable until setup is complete */
 	if (ipa->setup_complete) {
-		__clear_bit(IPA_POWER_FLAG_RESUMED, ipa->power->flags);
 		ipa_endpoint_suspend(ipa);
 		gsi_suspend(&ipa->gsi);
 	}
@@ -209,14 +196,6 @@ u32 ipa_core_clock_rate(struct ipa *ipa)
 
 void ipa_power_suspend_handler(struct ipa *ipa, enum ipa_irq_id irq_id)
 {
-	/* To handle an IPA interrupt we will have resumed the hardware
-	 * just to handle the interrupt, so we're done.  If we are in a
-	 * system suspend, trigger a system resume.
-	 */
-	if (!__test_and_set_bit(IPA_POWER_FLAG_RESUMED, ipa->power->flags)) {
-		;
-	}
-
 	/* Acknowledge/clear the suspend interrupt on all endpoints */
 	ipa_interrupt_suspend_clear_all(ipa->interrupt);
 }
-- 
2.40.1