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ACPI: Use correct IRQ when uninstalling ACPI interrupt handler

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commit 49e4b84333f338d4f183f28f1f3c1131b9fb2b5a upstream.

Currently when the system is trying to uninstall the ACPI interrupt
handler, it uses acpi_gbl_FADT.sci_interrupt as the IRQ number.
However, the IRQ number that the ACPI interrupt handled is installed
for comes from acpi_gsi_to_irq() and that is the number that should
be used for the handler removal.

Fix this problem by using the mapped IRQ returned from acpi_gsi_to_irq()
as appropriate.

Acked-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
This commit is contained in:
Chen Yu 2015-10-25 01:02:19 +08:00 committed by Zefan Li
parent ff0dd8f8f6
commit 1be2ead7a8
2 changed files with 12 additions and 3 deletions
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9
drivers/acpi/osl.c
View file

@ -85,6 +85,7 @@ static void *acpi_irq_context;
static struct workqueue_struct *kacpid_wq;
static struct workqueue_struct *kacpi_notify_wq;
struct workqueue_struct *kacpi_hotplug_wq;
unsigned int acpi_sci_irq = INVALID_ACPI_IRQ;
EXPORT_SYMBOL(kacpi_hotplug_wq);
/*
@ -612,17 +613,19 @@ acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler,
acpi_irq_handler = NULL;
return AE_NOT_ACQUIRED;
}
acpi_sci_irq = irq;
return AE_OK;
}
acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler)
acpi_status acpi_os_remove_interrupt_handler(u32 gsi, acpi_osd_handler handler)
{
if (irq != acpi_gbl_FADT.sci_interrupt)
if (gsi != acpi_gbl_FADT.sci_interrupt || !acpi_sci_irq_valid())
return AE_BAD_PARAMETER;
free_irq(irq, acpi_irq);
free_irq(acpi_sci_irq, acpi_irq);
acpi_irq_handler = NULL;
acpi_sci_irq = INVALID_ACPI_IRQ;
return AE_OK;
}

6
include/linux/acpi.h
View file

@ -110,6 +110,12 @@ int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
void acpi_irq_stats_init(void);
extern u32 acpi_irq_handled;
extern u32 acpi_irq_not_handled;
extern unsigned int acpi_sci_irq;
#define INVALID_ACPI_IRQ ((unsigned)-1)
static inline bool acpi_sci_irq_valid(void)
{
return acpi_sci_irq != INVALID_ACPI_IRQ;
}
extern int sbf_port;
extern unsigned long acpi_realmode_flags;