From: Matthew W. <ma...@wi...> - 2004-11-12 13:11:14
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On Fri, Nov 12, 2004 at 04:23:59PM +0800, Li, Shaohua wrote: > Hi Matthew, > Will you send a sequent patch? I haven't looked at an interrupt handler > is registered for the IRQ from GPE block device. $ cat /proc/interrupts |grep acpi 48: 0 0 0 0 0 IO-SAPIC-level acpi $ sudo modprobe gpe-block $ cat /proc/interrupts |grep acpi 48: 0 0 0 0 0 IO-SAPIC-level acpi 63: 0 0 0 0 0 IO-SAPIC-level acpi The interrupt is registered by this call in evgpeblk.c: $ find drivers/acpi/ -type f |xargs grep acpi_os_install_interrupt_handler drivers/acpi/osl.c:acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, void *context) drivers/acpi/events/evgpeblk.c: status = acpi_os_install_interrupt_handler (interrupt_level, drivers/acpi/events/evsci.c: status = acpi_os_install_interrupt_handler ((u32) acpi_gbl_FADT->sci_int, Note that up to two of the GPE blocks in the ACPI namespace may already be registered by virtue of being in the FADT; these will not be registered by the gpe-block driver as they don't have a _CRS method (see 9.11 of ACPI 3.0). I suspect 99% of the machines out there do not have additional GPE blocks... or someone else would have written this driver by now ;-) -- "Next the statesmen will invent cheap lies, putting the blame upon the nation that is attacked, and every man will be glad of those conscience-soothing falsities, and will diligently study them, and refuse to examine any refutations of them; and thus he will by and by convince himself that the war is just, and will thank God for the better sleep he enjoys after this process of grotesque self-deception." -- Mark Twain |