diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-06-16 20:03:33 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-06-17 17:10:11 +0200 |
| commit | d3121e64ad78ba944596d43d23914cf5f0131666 (patch) | |
| tree | 519c5540d391938542232f5e728637476c3b5813 /drivers/acpi | |
| parent | bdd56d7d8931e842775d2e5b93d426a8d1940e33 (diff) | |
| download | linux-d3121e64ad78ba944596d43d23914cf5f0131666.tar.bz2 | |
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 <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/sysfs.c | 13 |
1 files changed, 10 insertions, 3 deletions
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 <linux/bitmap.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/moduleparam.h> @@ -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; } |