Messages in this thread Patch in this message | | | Date | Sat, 21 Jun 2014 14:14:03 -0700 | From | tip-bot for Jiang Liu <> | Subject | [tip:x86/apic] x86, irq, ACPI: Change __acpi_register_gsi to return IRQ number instead of GSI |
| |
Commit-ID: 84245af7297ced9e8fe837dc0fc4782438771bd2 Gitweb: http://git.kernel.org/tip/84245af7297ced9e8fe837dc0fc4782438771bd2 Author: Jiang Liu <jiang.liu@linux.intel.com> AuthorDate: Tue, 10 Jun 2014 14:14:47 +0800 Committer: Thomas Gleixner <tglx@linutronix.de> CommitDate: Sat, 21 Jun 2014 23:05:42 +0200
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> --- arch/x86/kernel/acpi/boot.c | 21 ++++++++------------- 1 file changed, 8 insertions(+), 13 deletions(-)
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 9965afb..0cf311c 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);
| |