On 01/23/2015 08:55 AM, Rafael J. Wysocki wrote: > On Thursday, January 22, 2015 05:44:44 PM al.stone@xxxxxxxxxx wrote: >> From: Hanjun Guo <hanjun.guo@xxxxxxxxxx> >> >> ACPI_OS_NAME is globally defined as "Microsoft Windows NT" for now. >> That doesn't make much sense in the ARM context, so set it to "Linux" >> when CONFIG_ARM64. >> >> If it is necessary to change the return value from \_OS_ (that is, return >> some value other than the default in ACPI_OS_NAME), use the kernel parameter >> "acpi_os_name=<string>". >> >> Signed-off-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx> >> --- >> arch/arm64/Kconfig | 1 + >> drivers/acpi/Kconfig | 8 ++++++++ >> include/acpi/acconfig.h | 2 ++ >> include/acpi/platform/aclinux.h | 4 ++++ >> 4 files changed, 15 insertions(+) >> >> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig >> index 915aa16..20677d1 100644 >> --- a/arch/arm64/Kconfig >> +++ b/arch/arm64/Kconfig >> @@ -1,5 +1,6 @@ > > If you added > > config ACPI_OS_NAME > string > default "Linux" > depends on ACPI > > to this file, then you don't need to add the new select below and -> > >> config ARM64 >> def_bool y >> + select ACPI_OS_NAME_LINUX if ACPI >> select ACPI_REDUCED_HARDWARE_ONLY if ACPI >> select ARCH_BINFMT_ELF_RANDOMIZE_PIE >> select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE >> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig >> index 3e3bd35..024c5f0 100644 >> --- a/drivers/acpi/Kconfig >> +++ b/drivers/acpi/Kconfig >> @@ -369,6 +369,14 @@ config ACPI_REDUCED_HARDWARE_ONLY >> >> If you are unsure what to do, do not enable this option. >> >> +config ACPI_OS_NAME_LINUX >> + bool "Using Linux for _OS method" if EXPERT >> + def_bool n >> + When used, this option makes sure the _OS method returns >> + the value "Linux". >> + >> + If you are unsure what to do, do not enable this option. >> + > > -> you don't need this at all ->> > >> source "drivers/acpi/apei/Kconfig" >> >> config ACPI_EXTLOG >> diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h >> index 5a0a3e5..1980bf4 100644 >> --- a/include/acpi/acconfig.h >> +++ b/include/acpi/acconfig.h >> @@ -69,7 +69,9 @@ >> * code that will not execute the _OSI method unless _OS matches the string >> * below. Therefore, change this string at your own risk. >> */ >> +#ifndef ACPI_OS_NAME >> #define ACPI_OS_NAME "Microsoft Windows NT" >> +#endif >> >> /* Maximum objects in the various object caches */ >> >> diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h >> index 1ba7c19..a8a7ee3 100644 >> --- a/include/acpi/platform/aclinux.h >> +++ b/include/acpi/platform/aclinux.h >> @@ -69,6 +69,10 @@ >> #define ACPI_REDUCED_HARDWARE 1 >> #endif >> >> +#ifdef CONFIG_ACPI_OS_NAME_LINUX >> +#define ACPI_OS_NAME "Linux" >> +#endif > > ->> and here you can do > > +#ifdef CONFIG_ACPI_OS_NAME > +#define ACPI_OS_NAME CONFIG_ACPI_OS_NAME > +#endif > > unless I'm missing something. > >> + >> #include <linux/string.h> >> #include <linux/kernel.h> >> #include <linux/ctype.h> >> > D'oh. Yup. I'll correct it. -- ciao, al ----------------------------------- Al Stone Software Engineer Red Hat, Inc. ahs3@xxxxxxxxxx ----------------------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
