net: ipa: kill ipa_interrupt_add()

The dynamic assignment of IPA interrupt handlers isn't needed; we
only handle three IPA interrupt types, and their handler functions
are now assigned directly.  We can get rid of ipa_interrupt_add()
and ipa_interrupt_remove() now, because they serve no purpose.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ipa/ipa_interrupt.c

@@ -30,6 +30,8 @@
 #include "ipa_uc.h"
 #include "ipa_interrupt.h"
 
+typedef void (*ipa_irq_handler_t)(struct ipa *ipa, enum ipa_irq_id irq_id);
+
 /**
  * struct ipa_interrupt - IPA interrupt information
  * @ipa:		IPA pointer
@@ -225,20 +227,6 @@ void ipa_interrupt_simulate_suspend(struct ipa_interrupt *interrupt)
 	ipa_interrupt_process(interrupt, IPA_IRQ_TX_SUSPEND);
 }
 
-/* Add a handler for an IPA interrupt */
-void ipa_interrupt_add(struct ipa_interrupt *interrupt,
-		       enum ipa_irq_id ipa_irq, ipa_irq_handler_t handler)
-{
-	WARN_ON(ipa_irq >= IPA_IRQ_COUNT);
-}
-
-/* Remove the handler for an IPA interrupt type */
-void
-ipa_interrupt_remove(struct ipa_interrupt *interrupt, enum ipa_irq_id ipa_irq)
-{
-	WARN_ON(ipa_irq >= IPA_IRQ_COUNT);
-}
-
 /* Configure the IPA interrupt framework */
 struct ipa_interrupt *ipa_interrupt_config(struct ipa *ipa)
 {

drivers/net/ipa/ipa_interrupt.h

@@ -13,39 +13,6 @@ struct ipa;
 struct ipa_interrupt;
 enum ipa_irq_id;
 
-/**
- * typedef ipa_irq_handler_t - IPA interrupt handler function type
- * @ipa:	IPA pointer
- * @irq_id:	interrupt type
- *
- * Callback function registered by ipa_interrupt_add() to handle a specific
- * IPA interrupt type
- */
-typedef void (*ipa_irq_handler_t)(struct ipa *ipa, enum ipa_irq_id irq_id);
-
-/**
- * ipa_interrupt_add() - Register a handler for an IPA interrupt type
- * @interrupt:	IPA interrupt structure
- * @irq_id:	IPA interrupt type
- * @handler:	Handler function for the interrupt
- *
- * Add a handler for an IPA interrupt and enable it.  IPA interrupt
- * handlers are run in threaded interrupt context, so are allowed to
- * block.
- */
-void ipa_interrupt_add(struct ipa_interrupt *interrupt, enum ipa_irq_id irq_id,
-		       ipa_irq_handler_t handler);
-
-/**
- * ipa_interrupt_remove() - Remove the handler for an IPA interrupt type
- * @interrupt:	IPA interrupt structure
- * @irq_id:	IPA interrupt type
- *
- * Remove an IPA interrupt handler and disable it.
- */
-void ipa_interrupt_remove(struct ipa_interrupt *interrupt,
-			  enum ipa_irq_id irq_id);
-
 /**
  * ipa_interrupt_suspend_enable - Enable TX_SUSPEND for an endpoint
  * @interrupt:		IPA interrupt structure

drivers/net/ipa/ipa_power.c

@@ -325,15 +325,11 @@ int ipa_power_setup(struct ipa *ipa)
 {
 	int ret;
 
-	ipa_interrupt_add(ipa->interrupt, IPA_IRQ_TX_SUSPEND,
-			  ipa_power_suspend_handler);
 	ipa_interrupt_enable(ipa, IPA_IRQ_TX_SUSPEND);
 
 	ret = device_init_wakeup(&ipa->pdev->dev, true);
-	if (ret) {
+	if (ret)
 		ipa_interrupt_disable(ipa, IPA_IRQ_TX_SUSPEND);
-		ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_TX_SUSPEND);
-	}
 
 	return ret;
 }
@@ -342,7 +338,6 @@ void ipa_power_teardown(struct ipa *ipa)
 {
 	(void)device_init_wakeup(&ipa->pdev->dev, false);
 	ipa_interrupt_disable(ipa, IPA_IRQ_TX_SUSPEND);
-	ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_TX_SUSPEND);
 }
 
 /* Initialize IPA power management */

drivers/net/ipa/ipa_uc.c

@@ -182,13 +182,9 @@ void ipa_uc_interrupt_handler(struct ipa *ipa, enum ipa_irq_id irq_id)
 /* Configure the IPA microcontroller subsystem */
 void ipa_uc_config(struct ipa *ipa)
 {
-	struct ipa_interrupt *interrupt = ipa->interrupt;
-
 	ipa->uc_powered = false;
 	ipa->uc_loaded = false;
-	ipa_interrupt_add(interrupt, IPA_IRQ_UC_0, ipa_uc_interrupt_handler);
 	ipa_interrupt_enable(ipa, IPA_IRQ_UC_0);
-	ipa_interrupt_add(interrupt, IPA_IRQ_UC_1, ipa_uc_interrupt_handler);
 	ipa_interrupt_enable(ipa, IPA_IRQ_UC_1);
 }
 
@@ -198,9 +194,7 @@ void ipa_uc_deconfig(struct ipa *ipa)
 	struct device *dev = &ipa->pdev->dev;
 
 	ipa_interrupt_disable(ipa, IPA_IRQ_UC_1);
-	ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_UC_1);
 	ipa_interrupt_disable(ipa, IPA_IRQ_UC_0);
-	ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_UC_0);
 	if (ipa->uc_loaded)
 		ipa_power_retention(ipa, false);