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| author | Zhang Rui <rui.zhang@intel.com> | 2007-01-29 11:02:42 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-01-28 22:33:44 -0500 |
| commit | 5bb730fda8aa4e3f7e94b259c468ecd095f60770 (patch) | |
| tree | b6ae549e0a41bf06c4993e6b5501949db57bee37 /drivers/acpi/system.c | |
| parent | 219c3c8e268b9307eae9fae4c765a0c589b98338 (diff) | |
| download | linux-5bb730fda8aa4e3f7e94b259c468ecd095f60770.tar.gz | |
ACPI: add ACPICA version in sysfs
Add an ACPI attribute to indicate ACPICA version.
/proc/acpi/version is deprecated by /sys/module/acpi/parameters/acpica_version.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/system.c')
| -rw-r--r-- | drivers/acpi/system.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c index d86dcb3c2366..407b0e0281db 100644 --- a/drivers/acpi/system.c +++ b/drivers/acpi/system.c @@ -32,6 +32,11 @@ #define _COMPONENT ACPI_SYSTEM_COMPONENT ACPI_MODULE_NAME("acpi_system") +#ifdef MODULE_PARAM_PREFIX +#undef MODULE_PARAM_PREFIX +#endif +#define MODULE_PARAM_PREFIX "acpi." + #define ACPI_SYSTEM_CLASS "system" #define ACPI_SYSTEM_DRIVER_NAME "ACPI System Driver" #define ACPI_SYSTEM_DEVICE_NAME "System" @@ -41,9 +46,23 @@ ACPI_MODULE_NAME("acpi_system") #define ACPI_SYSTEM_FILE_FADT "fadt" extern struct fadt_descriptor acpi_fadt; +/* + * Make ACPICA version work as module param + */ +static int param_get_acpica_version(char *buffer, struct kernel_param *kp) { + int result; + + result = sprintf(buffer, "%x", ACPI_CA_VERSION); + + return result; +} + +module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444); + /* -------------------------------------------------------------------------- FS Interface (/proc) -------------------------------------------------------------------------- */ +#ifdef CONFIG_ACPI_PROCFS static int acpi_system_read_info(struct seq_file *seq, void *offset) { @@ -63,6 +82,7 @@ static const struct file_operations acpi_system_info_ops = { .llseek = seq_lseek, .release = single_release, }; +#endif static ssize_t acpi_system_read_dsdt(struct file *, char __user *, size_t, loff_t *); @@ -128,6 +148,7 @@ static int __init acpi_system_init(void) if (acpi_disabled) return 0; +#ifdef CONFIG_ACPI_PROCFS /* 'info' [R] */ name = ACPI_SYSTEM_FILE_INFO; entry = create_proc_entry(name, S_IRUGO, acpi_root_dir); @@ -136,6 +157,7 @@ static int __init acpi_system_init(void) else { entry->proc_fops = &acpi_system_info_ops; } +#endif /* 'dsdt' [R] */ name = ACPI_SYSTEM_FILE_DSDT; @@ -159,7 +181,9 @@ static int __init acpi_system_init(void) Error: remove_proc_entry(ACPI_SYSTEM_FILE_FADT, acpi_root_dir); remove_proc_entry(ACPI_SYSTEM_FILE_DSDT, acpi_root_dir); +#ifdef CONFIG_ACPI_PROCFS remove_proc_entry(ACPI_SYSTEM_FILE_INFO, acpi_root_dir); +#endif error = -EFAULT; goto Done; |