From d3121e64ad78ba944596d43d23914cf5f0131666 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 16 Jun 2021 20:03:33 +0300 Subject: ACPI: sysfs: Allow bitmap list to be supplied to acpi_mask_gpe Currently we need to use as many acpi_mask_gpe options as we want to have GPEs to be masked. Even with two it already becomes inconveniently large the kernel command line. Instead, allow acpi_mask_gpe to represent bitmap list. Signed-off-by: Andy Shevchenko Signed-off-by: Rafael J. Wysocki --- drivers/acpi/sysfs.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'drivers/acpi') diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c index faab6f1c6165..20588c64cd1b 100644 --- a/drivers/acpi/sysfs.c +++ b/drivers/acpi/sysfs.c @@ -5,6 +5,7 @@ #define pr_fmt(fmt) "ACPI: " fmt +#include #include #include #include @@ -790,6 +791,7 @@ end: * the GPE flooding for GPE 00, they need to specify the following boot * parameter: * acpi_mask_gpe=0x00 + * Note, the parameter can be a list (see bitmap_parselist() for the details). * The masking status can be modified by the following runtime controlling * interface: * echo unmask > /sys/firmware/acpi/interrupts/gpe00 @@ -799,11 +801,16 @@ static DECLARE_BITMAP(acpi_masked_gpes_map, ACPI_MASKABLE_GPE_MAX) __initdata; static int __init acpi_gpe_set_masked_gpes(char *val) { + int ret; u8 gpe; - if (kstrtou8(val, 0, &gpe)) - return -EINVAL; - set_bit(gpe, acpi_masked_gpes_map); + ret = kstrtou8(val, 0, &gpe); + if (ret) { + ret = bitmap_parselist(val, acpi_masked_gpes_map, ACPI_MASKABLE_GPE_MAX); + if (ret) + return ret; + } else + set_bit(gpe, acpi_masked_gpes_map); return 1; } -- cgit v1.2.3