diff options
| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-06-10 14:14:47 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-06-21 23:05:42 +0200 |
| commit | 84245af7297ced9e8fe837dc0fc4782438771bd2 (patch) | |
| tree | 9aea01bef0fa15081485d2e6a15f9fbc4d357035 /arch/x86/kernel/acpi/boot.c | |
| parent | 6b9fb7082409cd4a2c7caf43e3c023ad82dad0d4 (diff) | |
x86, irq, ACPI: Change __acpi_register_gsi to return IRQ number instead of GSI
Currently __acpi_register_gsi is defined to return GSI number and
may be set to acpi_register_gsi_pic(), acpi_register_gsi_ioapic(),
acpi_register_gsi_xen_hvm() and acpi_register_gsi_xen().
Among which, acpi_register_gsi_ioapic() returns GSI number, but
acpi_register_gsi_xen_hvm() and acpi_register_gsi_xen() actually
returns IRQ number instead of GSI. And for acpi_register_gsi_pic(),
GSI number equals to IRQ number.
So change acpi_register_gsi_ioapic() to return IRQ number, it also
simplifies the code.
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>
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Link: http://lkml.kernel.org/r/1402380887-32512-1-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/acpi/boot.c')
| -rw-r--r-- | arch/x86/kernel/acpi/boot.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 9965afbd71ca..0cf311c72bce 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -419,7 +419,7 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, irq = map_gsi_to_irq(gsi); if (irq < 0) - return ACPI_INVALID_GSI; + return irq; ioapic = mp_find_ioapic(gsi); if (ioapic < 0) { @@ -444,12 +444,11 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, polarity == ACPI_ACTIVE_HIGH ? 0 : 1); ret = io_apic_set_pci_routing(dev, irq, &irq_attr); if (ret < 0) - gsi = ACPI_INVALID_GSI; + irq = -1; - return gsi; + return irq; } - static int __init acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) { @@ -652,11 +651,13 @@ static int acpi_register_gsi_pic(struct device *dev, u32 gsi, static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, int trigger, int polarity) { + int irq = gsi; + #ifdef CONFIG_X86_IO_APIC - gsi = mp_register_gsi(dev, gsi, trigger, polarity); + irq = mp_register_gsi(dev, gsi, trigger, polarity); #endif - return gsi; + return irq; } int (*__acpi_register_gsi)(struct device *dev, u32 gsi, @@ -674,13 +675,7 @@ int (*acpi_suspend_lowlevel)(void); */ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) { - unsigned int plat_gsi; - - plat_gsi = __acpi_register_gsi(dev, gsi, trigger, polarity); - if (plat_gsi != ACPI_INVALID_GSI) - return map_gsi_to_irq(plat_gsi); - - return -1; + return __acpi_register_gsi(dev, gsi, trigger, polarity); } EXPORT_SYMBOL_GPL(acpi_register_gsi); |