| Message ID | 1398432017-8506-6-git-send-email-hanjun.guo@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, 25 Apr 2014 21:20:11 +0800, Hanjun Guo <hanjun.guo@linaro.org> wrote: > Introduce two early parameters for "acpi", one is the parameter > to disable ACPI on ARM64 and another one is acpi=strict to disable > out-of-spec workarounds. > > Signed-off-by: Al Stone <al.stone@linaro.org> > Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org> > Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> > --- > drivers/acpi/plat/arm-core.c | 18 ++++++++++++++++++ > 1 file changed, 18 insertions(+) > > diff --git a/drivers/acpi/plat/arm-core.c b/drivers/acpi/plat/arm-core.c > index 47b5d9b..e4846fd 100644 > --- a/drivers/acpi/plat/arm-core.c > +++ b/drivers/acpi/plat/arm-core.c > @@ -111,3 +111,21 @@ void __init acpi_boot_table_init(void) > return; > } > } > + > +static int __init parse_acpi(char *arg) > +{ > + if (!arg) > + return -EINVAL; > + > + /* "acpi=off" disables both ACPI table parsing and interpreter */ > + if (strcmp(arg, "off") == 0) { > + disable_acpi(); > + } > + /* acpi=strict disables out-of-spec workarounds */ > + else if (strcmp(arg, "strict") == 0) { > + acpi_strict = 1; > + } > + > + return 0; > +} > +early_param("acpi", parse_acpi); This is a cut down version of arch/x86/kernel/acpi/boot.c. Both the 'off' and 'strict' options appear useful regardless of platform. I would consider refactoring this to have a common parse_acpi() and a call out to another function for arch specific bits. Otherwise: Reviewed-by: Grant Likely <grant.likely@linaro.org> > -- > 1.7.9.5 >
diff --git a/drivers/acpi/plat/arm-core.c b/drivers/acpi/plat/arm-core.c index 47b5d9b..e4846fd 100644 --- a/drivers/acpi/plat/arm-core.c +++ b/drivers/acpi/plat/arm-core.c @@ -111,3 +111,21 @@ void __init acpi_boot_table_init(void) return; } } + +static int __init parse_acpi(char *arg) +{ + if (!arg) + return -EINVAL; + + /* "acpi=off" disables both ACPI table parsing and interpreter */ + if (strcmp(arg, "off") == 0) { + disable_acpi(); + } + /* acpi=strict disables out-of-spec workarounds */ + else if (strcmp(arg, "strict") == 0) { + acpi_strict = 1; + } + + return 0; +} +early_param("acpi", parse_acpi);