[Patch Part2 v4 06/33] x86/irq: Kill x86_io_apic_ops.eoi_ioapic_pin and related interfaces

[Jiang Liu]

Now there is no user of x86_io_apic_ops.eoi_ioapic_pin anymore, so kill
it.

Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Joerg Roedel <joro@xxxxxxxxxx>
Cc: Yijing Wang <wangyijing@xxxxxxxxxx>
Cc: Grant Likely <grant.likely@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1416901802-24211-16-git-send-email-jiang.liu@xxxxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Tested-by: Joerg Roedel <jroedel@xxxxxxx>
---
 arch/x86/include/asm/io_apic.h  |   12 ------------
 arch/x86/include/asm/x86_init.h |    1 -
 arch/x86/kernel/apic/io_apic.c  |   20 ++++----------------
 arch/x86/kernel/x86_init.c      |    1 -
 drivers/iommu/irq_remapping.c   |   19 -------------------
 5 files changed, 4 insertions(+), 49 deletions(-)

diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index 0ff68daa9949..3b54f0f9cbb7 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -150,10 +150,6 @@ struct irq_cfg;
 extern void ioapic_insert_resources(void);
 extern int arch_early_ioapic_init(void);
 
-extern void eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg);
-
-extern void native_eoi_ioapic_pin(int apic, int pin, int vector);
-
 extern int save_ioapic_entries(void);
 extern void mask_ioapic_entries(void);
 extern int restore_ioapic_entries(void);
@@ -237,8 +233,6 @@ static inline void io_apic_modify(unsigned int apic, unsigned int reg, unsigned
 	x86_io_apic_ops.modify(apic, reg, value);
 }
 
-extern void io_apic_eoi(unsigned int apic, unsigned int vector);
-
 extern void setup_IO_APIC(void);
 extern void enable_IO_APIC(void);
 extern void disable_IO_APIC(void);
@@ -282,12 +276,6 @@ static inline void disable_ioapic_support(void) { }
 #define native_io_apic_write		NULL
 #define native_io_apic_modify		NULL
 #define native_disable_io_apic		NULL
-#define native_eoi_ioapic_pin		NULL
-
-static inline void setup_IO_APIC(void) { }
-static inline void enable_IO_APIC(void) { }
-static inline void setup_ioapic_dest(void) { }
-
 #endif
 
 #endif /* _ASM_X86_IO_APIC_H */
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index f9f83cfabcaa..4ada3d3a0e86 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -191,7 +191,6 @@ struct x86_io_apic_ops {
 	void		(*write)  (unsigned int apic, unsigned int reg, unsigned int value);
 	void		(*modify) (unsigned int apic, unsigned int reg, unsigned int value);
 	void		(*disable)(void);
-	void		(*eoi_ioapic_pin)(int apic, int pin, int vector);
 };
 
 extern struct x86_init_ops x86_init;
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index fff17afdfe5d..8690334ad40c 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -273,7 +273,7 @@ static __attribute_const__ struct io_apic __iomem *io_apic_base(int idx)
 		+ (mpc_ioapic_addr(idx) & ~PAGE_MASK);
 }
 
-void io_apic_eoi(unsigned int apic, unsigned int vector)
+static inline void io_apic_eoi(unsigned int apic, unsigned int vector)
 {
 	struct io_apic __iomem *io_apic = io_apic_base(apic);
 	writel(vector, &io_apic->eoi);
@@ -529,7 +529,7 @@ static void unmask_ioapic_irq(struct irq_data *data)
  * Otherwise, we simulate the EOI message manually by changing the trigger
  * mode to edge and then back to level, with RTE being masked during this.
  */
-void native_eoi_ioapic_pin(int apic, int pin, int vector)
+static void __eoi_ioapic_pin(int apic, int pin, int vector)
 {
 	if (mpc_ioapic_ver(apic) >= 0x20) {
 		io_apic_eoi(apic, vector);
@@ -560,19 +560,7 @@ void eoi_ioapic_pin(int vector, struct irq_cfg *cfg)
 
 	raw_spin_lock_irqsave(&ioapic_lock, flags);
 	for_each_irq_pin(entry, cfg->irq_2_pin)
-		native_eoi_ioapic_pin(entry->apic, entry->pin, vector);
-	raw_spin_unlock_irqrestore(&ioapic_lock, flags);
-}
-
-void eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg)
-{
-	struct irq_pin_list *entry;
-	unsigned long flags;
-
-	raw_spin_lock_irqsave(&ioapic_lock, flags);
-	for_each_irq_pin(entry, cfg->irq_2_pin)
-		x86_io_apic_ops.eoi_ioapic_pin(entry->apic, entry->pin,
-					       cfg->vector);
+		__eoi_ioapic_pin(entry->apic, entry->pin, vector);
 	raw_spin_unlock_irqrestore(&ioapic_lock, flags);
 }
 
@@ -608,7 +596,7 @@ static void clear_IO_APIC_pin(unsigned int apic, unsigned int pin)
 			ioapic_write_entry(apic, pin, entry);
 		}
 		raw_spin_lock_irqsave(&ioapic_lock, flags);
-		native_eoi_ioapic_pin(apic, pin, entry.vector);
+		__eoi_ioapic_pin(apic, pin, entry.vector);
 		raw_spin_unlock_irqrestore(&ioapic_lock, flags);
 	}
 
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index f7e8eab3a7c4..f612dc018fb6 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -144,5 +144,4 @@ struct x86_io_apic_ops x86_io_apic_ops = {
 	.write			= native_io_apic_write,
 	.modify			= native_io_apic_modify,
 	.disable		= native_disable_io_apic,
-	.eoi_ioapic_pin		= native_eoi_ioapic_pin,
 };
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 7baa54a13921..bca42550b1ad 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -43,21 +43,9 @@ static void irq_remapping_disable_io_apic(void)
 		disconnect_bsp_APIC(0);
 }
 
-static void eoi_ioapic_pin_remapped(int apic, int pin, int vector)
-{
-	/*
-	 * Intr-remapping uses pin number as the virtual vector
-	 * in the RTE. Actual vector is programmed in
-	 * intr-remapping table entry. Hence for the io-apic
-	 * EOI we use the pin number.
-	 */
-	io_apic_eoi(apic, pin);
-}
-
 static void __init irq_remapping_modify_x86_ops(void)
 {
 	x86_io_apic_ops.disable		= irq_remapping_disable_io_apic;
-	x86_io_apic_ops.eoi_ioapic_pin	= eoi_ioapic_pin_remapped;
 }
 
 static __init int setup_nointremap(char *str)
@@ -171,12 +159,6 @@ void ir_ack_apic_edge(struct irq_data *data)
 	ack_APIC_irq();
 }
 
-static void ir_ack_apic_level(struct irq_data *data)
-{
-	ack_APIC_irq();
-	eoi_ioapic_irq(data->irq, irqd_cfg(data));
-}
-
 static void ir_print_prefix(struct irq_data *data, struct seq_file *p)
 {
 	seq_printf(p, " IR-%s", data->chip->name);
@@ -186,7 +168,6 @@ void irq_remap_modify_chip_defaults(struct irq_chip *chip)
 {
 	chip->irq_print_chip = ir_print_prefix;
 	chip->irq_ack = ir_ack_apic_edge;
-	chip->irq_eoi = ir_ack_apic_level;
 }
 
 bool setup_remapped_irq(int irq, struct irq_cfg *cfg, struct irq_chip *chip)
-- 
1.7.10.4

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