From mboxrd@z Thu Jan 1 00:00:00 1970 From: hanjun.guo@linaro.org (Hanjun Guo) Date: Fri, 25 Apr 2014 21:20:11 +0800 Subject: [PATCH v3 part1 05/11] ARM64 / ACPI: Introduce early_param for "acpi" In-Reply-To: <1398432017-8506-1-git-send-email-hanjun.guo@linaro.org> References: <1398432017-8506-1-git-send-email-hanjun.guo@linaro.org> Message-ID: <1398432017-8506-6-git-send-email-hanjun.guo@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Signed-off-by: Graeme Gregory Signed-off-by: Hanjun Guo --- 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); -- 1.7.9.5