Hi, Ben,
ok for me.
thanks,
Yu
On Tue, 2015-11-24 at 22:33 +0000, Ben Hutchings wrote:
> 3.2.74-rc1 review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: Chen Yu <yu.c.chen@xxxxxxxxx>
>
> 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@xxxxxxxxx>
> Signed-off-by: Chen Yu <yu.c.chen@xxxxxxxxx>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> [bwh: Backported to 3.2: adjust context]
> Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
> ---
> drivers/acpi/osl.c | 9 ++++++---
> include/linux/acpi.h | 6 ++++++
> 2 files changed, 12 insertions(+), 3 deletions(-)
>
> --- a/drivers/acpi/osl.c
> +++ b/drivers/acpi/osl.c
> @@ -82,6 +82,7 @@ static struct workqueue_struct *kacpid_w
> static struct workqueue_struct *kacpi_notify_wq;
> struct workqueue_struct *kacpi_hotplug_wq;
> EXPORT_SYMBOL(kacpi_hotplug_wq);
> +unsigned int acpi_sci_irq = INVALID_ACPI_IRQ;
>
> struct acpi_res_list {
> resource_size_t start;
> @@ -566,17 +567,19 @@ acpi_os_install_interrupt_handler(u32 gs
> 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;
> }
> --- a/include/linux/acpi.h
> +++ b/include/linux/acpi.h
> @@ -110,6 +110,12 @@ int acpi_unregister_ioapic(acpi_handle h
> 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;
>
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