http://bugzilla.kernel.org/show_bug.cgi?id=6208
------- Additional Comments From [EMAIL PROTECTED] 2006-05-02 15:41 -------
last modification was incorrect becouse when i put 'noapic' in boot options
usbhid didn't work. Finaly with this modyfication my linux-2.6.17-rc3-git-5 has
no problems with usb mouse and booting.
file: /usr/src/linux/drivers/acpi/executer/exregion.c
function: acpi_ex_pci_config_space_handler
acpi_status
acpi_ex_pci_config_space_handler(u32 function,
acpi_physical_address address,
u32 bit_width,
acpi_integer * value,
void *handler_context, void *region_context)
{
acpi_status status = AE_OK;
struct acpi_pci_id *pci_id;
u16 pci_register;
ACPI_FUNCTION_TRACE("ex_pci_config_space_handler");
/*
* The arguments to acpi_os(Read|Write)pci_configuration are:
*
* pci_segment is the PCI bus segment range 0-31
* pci_bus is the PCI bus number range 0-255
* pci_device is the PCI device number range 0-31
* pci_function is the PCI device function number
* pci_register is the Config space register range 0-255 bytes
*
* Value - input value for write, output address for read
*
*/
pci_id = (struct acpi_pci_id *)region_context;
pci_register = (u16) (u32) address;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"pci_config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x)
Func(%04x) Reg(%04x)\n",
function, bit_width, pci_id->segment, pci_id->bus,
pci_id->device, pci_id->function, pci_register));
if ( pci_id->bus == 0x0000 && pci_id->device == 0x0003 &&
pci_id->function != 0x0001 ) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "SKIP!\n" ));
}
else
{
switch (function) {
case ACPI_READ:
*value = 0;
status = acpi_os_read_pci_configuration(pci_id,
pci_register,
value,
bit_width);
break;
case ACPI_WRITE:
status = acpi_os_write_pci_configuration(pci_id,
pci_register,
*value,
bit_width);
break;
default:
status = AE_BAD_PARAMETER;
break;
}
}
return_ACPI_STATUS(status);
}
This function can work fine olny when pci_id->function is set to 1. Why is
that?
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