forked from luck/tmp_suning_uos_patched
30c9bb0d76
The order of the _OSI related functionalities is as follows:
acpi_blacklisted()
acpi_dmi_osi_linux()
acpi_osi_setup()
acpi_osi_setup()
acpi_update_interfaces() if "!*"
<<<<<<<<<<<<<<<<<<<<<<<<
parse_args()
__setup("acpi_osi=")
acpi_osi_setup_linux()
acpi_update_interfaces() if "!*"
<<<<<<<<<<<<<<<<<<<<<<<<
acpi_early_init()
acpi_initialize_subsystem()
acpi_ut_initialize_interfaces()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
acpi_bus_init()
acpi_os_initialize1()
acpi_install_interface_handler(acpi_osi_handler)
acpi_osi_setup_late()
acpi_update_interfaces() for "!"
>>>>>>>>>>>>>>>>>>>>>>>>
acpi_osi_handler()
Since acpi_osi_setup_linux() can override acpi_dmi_osi_linux(), the command
line setting can override the DMI detection. That's why acpi_blacklisted()
is put before __setup("acpi_osi=").
Then we can notice the following wrong invocation order. There are
acpi_update_interfaces() (marked by <<<<) calls invoked before
acpi_ut_initialize_interfaces() (marked by ^^^^). This makes it impossible
to use acpi_osi=!* correctly from OSI DMI table or from the command line.
The use of acpi_osi=!* is meant to disable both ACPICA
(acpi_gbl_supported_interfaces) and Linux specific strings
(osi_setup_entries) while the ACPICA part should have stopped working
because of the order issue.
This patch fixes this issue by moving acpi_update_interfaces() to where
it is invoked for acpi_osi=! (marked by >>>>) as this is ensured to be
invoked after acpi_ut_initialize_interfaces() (marked by ^^^^). Linux
specific strings are still handled in the original place in order to make
the following command line working: acpi_osi=!* acpi_osi="Module Device".
Note that since acpi_osi=!* is meant to further disable linux specific
string comparing to the acpi_osi=!, there is no such use case in our bug
fixing work and hence there is no one using acpi_osi=!* either from the
command line or from the DMI quirks, this issue is just a theoretical
issue.
Fixes:
|
||
---|---|---|
.. | ||
acpica | ||
apei | ||
pmic | ||
ac.c | ||
acpi_amba.c | ||
acpi_apd.c | ||
acpi_cmos_rtc.c | ||
acpi_dbg.c | ||
acpi_extlog.c | ||
acpi_ipmi.c | ||
acpi_lpat.c | ||
acpi_lpss.c | ||
acpi_memhotplug.c | ||
acpi_pad.c | ||
acpi_platform.c | ||
acpi_pnp.c | ||
acpi_processor.c | ||
acpi_video.c | ||
battery.c | ||
battery.h | ||
bgrt.c | ||
blacklist.c | ||
bus.c | ||
button.c | ||
cm_sbs.c | ||
container.c | ||
cppc_acpi.c | ||
custom_method.c | ||
debugfs.c | ||
device_pm.c | ||
device_sysfs.c | ||
dock.c | ||
ec_sys.c | ||
ec.c | ||
event.c | ||
fan.c | ||
glue.c | ||
gsi.c | ||
hed.c | ||
int340x_thermal.c | ||
internal.h | ||
ioapic.c | ||
Kconfig | ||
Makefile | ||
nfit.c | ||
nfit.h | ||
numa.c | ||
nvs.c | ||
osl.c | ||
pci_irq.c | ||
pci_link.c | ||
pci_root.c | ||
pci_slot.c | ||
power.c | ||
proc.c | ||
processor_core.c | ||
processor_driver.c | ||
processor_idle.c | ||
processor_pdc.c | ||
processor_perflib.c | ||
processor_thermal.c | ||
processor_throttling.c | ||
property.c | ||
reboot.c | ||
resource.c | ||
sbs.c | ||
sbshc.c | ||
sbshc.h | ||
scan.c | ||
sleep.c | ||
sleep.h | ||
sysfs.c | ||
tables.c | ||
thermal.c | ||
utils.c | ||
video_detect.c | ||
wakeup.c |