x86/irq: Remove x86_io_apic_ops.write and x86_io_apic_ops.modify

x86_io_apic_ops.write is always set to native_io_apic_write(),
and nobody overrides it. So get rid of the indirection by changing
native_io_apic_write() as io_apic_write() and removing
x86_io_apic_ops.write.

Do the same for x86_io_apic_ops.modify and native_io_apic_modify().

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Tested-by: Joerg Roedel <jroedel@suse.de>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: David Cohen <david.a.cohen@linux.intel.com>
Cc: Sander Eikelenboom <linux@eikelenboom.it>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: Yijing Wang <wangyijing@huawei.com>
Cc: Grant Likely <grant.likely@linaro.org>
Link: http://lkml.kernel.org/r/1428978610-28986-19-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

4 files changed, 4 insertions, 19 deletions

diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index 4eb4bcc5f219..c6486dd44418 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -208,8 +208,6 @@ extern void disable_ioapic_support(void);
 
 extern void __init native_io_apic_init_mappings(void);
 extern unsigned int native_io_apic_read(unsigned int apic, unsigned int reg);
-extern void native_io_apic_write(unsigned int apic, unsigned int reg, unsigned int val);
-extern void native_io_apic_modify(unsigned int apic, unsigned int reg, unsigned int val);
 extern void native_disable_io_apic(void);
 
 static inline unsigned int io_apic_read(unsigned int apic, unsigned int reg)
@@ -217,15 +215,6 @@ static inline unsigned int io_apic_read(unsigned int apic, unsigned int reg)
         return x86_io_apic_ops.read(apic, reg);
 }
 
-static inline void io_apic_write(unsigned int apic, unsigned int reg, unsigned int value)
-{
-        x86_io_apic_ops.write(apic, reg, value);
-}
-static inline void io_apic_modify(unsigned int apic, unsigned int reg, unsigned int value)
-{
-        x86_io_apic_ops.modify(apic, reg, value);
-}
-
 extern void setup_IO_APIC(void);
 extern void enable_IO_APIC(void);
 extern void disable_IO_APIC(void);
@@ -266,8 +255,6 @@ static inline void mp_save_irq(struct mpc_intsrc *m) { };
 static inline void disable_ioapic_support(void) { }
 #define native_io_apic_init_mappings    NULL
 #define native_io_apic_read             NULL
-#define native_io_apic_write            NULL
-#define native_io_apic_modify           NULL
 #define native_disable_io_apic          NULL
 
 static inline void setup_IO_APIC(void) { }
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 09d4dab9302f..844b37d55a44 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -182,8 +182,6 @@ struct x86_msi_ops {
 struct x86_io_apic_ops {
         void            (*init)   (void);
         unsigned int    (*read)   (unsigned int apic, unsigned int reg);
-        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);
 };
 
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 76dc9f5bfdbc..d687a10ed3a2 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -280,7 +280,8 @@ unsigned int native_io_apic_read(unsigned int apic, unsigned int reg)
         return readl(&io_apic->data);
 }
 
-void native_io_apic_write(unsigned int apic, unsigned int reg, unsigned int value)
+static void io_apic_write(unsigned int apic, unsigned int reg,
+                          unsigned int value)
 {
         struct io_apic __iomem *io_apic = io_apic_base(apic);
 
@@ -294,7 +295,8 @@ void native_io_apic_write(unsigned int apic, unsigned int reg, unsigned int valu
  *
  * Older SiS APIC requires we rewrite the index register
  */
-void native_io_apic_modify(unsigned int apic, unsigned int reg, unsigned int value)
+static void io_apic_modify(unsigned int apic, unsigned int reg,
+                           unsigned int value)
 {
         struct io_apic __iomem *io_apic = io_apic_base(apic);
 
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index f612dc018fb6..633f07845099 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -141,7 +141,5 @@ void arch_restore_msi_irqs(struct pci_dev *dev)
 struct x86_io_apic_ops x86_io_apic_ops = {
         .init                   = native_io_apic_init_mappings,
         .read                   = native_io_apic_read,
-        .write                  = native_io_apic_write,
-        .modify                 = native_io_apic_modify,
         .disable                = native_disable_io_apic,
 };