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x86/apic: Remove the (now) unused disable_IO_APIC() function 

No one uses it anymore.

Signed-off-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: douly.fnst@cn.fujitsu.com
Cc: joro@8bytes.org
Cc: prarit@redhat.com
Cc: uobergfe@redhat.com
Link: http://lkml.kernel.org/r/20180214054656.3780-5-bhe@redhat.com
[ Rewrote the changelog. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Baoquan He 2018-02-14 13:46:54 +08:00 committed by Ingo Molnar
parent 339b2ae0cd
commit 50374b96d2
4 changed files with 4 additions and 20 deletions
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1
arch/x86/include/asm/io_apic.h
View File

@ -192,7 +192,6 @@ static inline unsigned int io_apic_read(unsigned int apic, unsigned int reg)
extern void setup_IO_APIC(void);
extern void enable_IO_APIC(void);
extern void disable_IO_APIC(void);
extern void clear_IO_APIC(void);
extern void restore_boot_irq_mode(void);
extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin);

13
arch/x86/kernel/apic/io_apic.c
View File

@ -1438,19 +1438,6 @@ void native_disable_io_apic(void)
disconnect_bsp_APIC(ioapic_i8259.pin != -1);
}
/*
* Not an __init, needed by the reboot code
*/
void disable_IO_APIC(void)
{
/*
* Clear the IO-APIC before rebooting:
*/
clear_IO_APIC();
restore_boot_irq_mode();
}
void restore_boot_irq_mode(void)
{
if (!nr_legacy_irqs())

5
arch/x86/kernel/machine_kexec_32.c
View File

@ -195,9 +195,8 @@ void machine_kexec(struct kimage *image)
/*
* We need to put APICs in legacy mode so that we can
* get timer interrupts in second kernel. kexec/kdump
* paths already have calls to disable_IO_APIC() in
* one form or other. kexec jump path also need
* one.
* paths already have calls to restore_boot_irq_mode()
* in one form or other. kexec jump path also need one.
*/
clear_IO_APIC();
restore_boot_irq_mode();

5
arch/x86/kernel/machine_kexec_64.c
View File

@ -293,9 +293,8 @@ void machine_kexec(struct kimage *image)
/*
* We need to put APICs in legacy mode so that we can
* get timer interrupts in second kernel. kexec/kdump
* paths already have calls to disable_IO_APIC() in
* one form or other. kexec jump path also need
* one.
* paths already have calls to restore_boot_irq_mode()
* in one form or other. kexec jump path also need one.
*/
clear_IO_APIC();
restore_boot_irq_mode();