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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-06-09 16:19:45 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-06-21 23:05:41 +0200 |
| commit | 18e485518656205bbffce5e01f07830a6c3f557d (patch) | |
| tree | dcbba2daaa381470b66c17839f808c4795c6b7cf /arch/x86/include/asm/io_apic.h | |
| parent | 79598505aee61bc943955de3653be054c2f7393f (diff) | |
| download | linux-0-day-18e485518656205bbffce5e01f07830a6c3f557d.tar.gz linux-0-day-18e485518656205bbffce5e01f07830a6c3f557d.tar.xz | |
x86, irq: Introduce some helper utilities to improve readability
It also fixes an off by one bug in
if ((ioapic_idx > 0) && (irq > NR_IRQS_LEGACY))
It should be
if ((ioapic_idx > 0) && (irq >= NR_IRQS_LEGACY))
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1402302011-23642-17-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/include/asm/io_apic.h')
| -rw-r--r-- | arch/x86/include/asm/io_apic.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index de3d8b04cf644..b775cf3622c3e 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -171,6 +171,7 @@ extern u32 gsi_top; extern int mp_find_ioapic(u32 gsi); extern int mp_find_ioapic_pin(int ioapic, u32 gsi); +extern u32 mp_pin_to_gsi(int ioapic, int pin); extern void __init mp_register_ioapic(int id, u32 address, u32 gsi_base); extern void __init pre_init_apic_IRQ0(void); @@ -212,6 +213,7 @@ extern void io_apic_eoi(unsigned int apic, unsigned int vector); static inline void ioapic_insert_resources(void) { } #define gsi_top (NR_IRQS_LEGACY) static inline int mp_find_ioapic(u32 gsi) { return 0; } +static inline u32 mp_pin_to_gsi(int ioapic, int pin) { return UINT_MAX; } struct io_apic_irq_attr; static inline int io_apic_set_pci_routing(struct device *dev, int irq, |