d3561b7fa0
Create a paravirt.h header for all the critical operations which need to be
replaced with hypervisor calls, and include that instead of defining native
operations, when CONFIG_PARAVIRT.
This patch does the dumbest possible replacement of paravirtualized
instructions: calls through a "paravirt_ops" structure. Currently these are
function implementations of native hardware: hypervisors will override the ops
structure with their own variants.
All the pv-ops functions are declared "fastcall" so that a specific
register-based ABI is used, to make inlining assember easier.
And:
+From: Andy Whitcroft <apw@shadowen.org>
The paravirt ops introduce a 'weak' attribute onto memory_setup().
Code ordering leads to the following warnings on x86:
arch/i386/kernel/setup.c:651: warning: weak declaration of
`memory_setup' after first use results in unspecified behavior
Move memory_setup() to avoid this.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
680 lines
18 KiB
C
680 lines
18 KiB
C
/*
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* linux/arch/i386/kernel/setup.c
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*
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* Copyright (C) 1995 Linus Torvalds
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*
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* Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
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*
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* Memory region support
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* David Parsons <orc@pell.chi.il.us>, July-August 1999
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*
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* Added E820 sanitization routine (removes overlapping memory regions);
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* Brian Moyle <bmoyle@mvista.com>, February 2001
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*
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* Moved CPU detection code to cpu/${cpu}.c
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* Patrick Mochel <mochel@osdl.org>, March 2002
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*
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* Provisions for empty E820 memory regions (reported by certain BIOSes).
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* Alex Achenbach <xela@slit.de>, December 2002.
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*
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*/
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/*
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* This file handles the architecture-dependent parts of initialization
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*/
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/mmzone.h>
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#include <linux/screen_info.h>
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#include <linux/ioport.h>
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#include <linux/acpi.h>
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#include <linux/apm_bios.h>
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#include <linux/initrd.h>
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#include <linux/bootmem.h>
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#include <linux/seq_file.h>
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#include <linux/platform_device.h>
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#include <linux/console.h>
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#include <linux/mca.h>
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#include <linux/root_dev.h>
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#include <linux/highmem.h>
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#include <linux/module.h>
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#include <linux/efi.h>
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#include <linux/init.h>
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#include <linux/edd.h>
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#include <linux/nodemask.h>
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#include <linux/kexec.h>
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#include <linux/crash_dump.h>
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#include <linux/dmi.h>
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#include <linux/pfn.h>
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#include <video/edid.h>
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#include <asm/apic.h>
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#include <asm/e820.h>
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#include <asm/mpspec.h>
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#include <asm/mmzone.h>
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#include <asm/setup.h>
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#include <asm/arch_hooks.h>
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#include <asm/sections.h>
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#include <asm/io_apic.h>
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#include <asm/ist.h>
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#include <asm/io.h>
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#include <setup_arch.h>
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#include <bios_ebda.h>
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/* This value is set up by the early boot code to point to the value
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immediately after the boot time page tables. It contains a *physical*
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address, and must not be in the .bss segment! */
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unsigned long init_pg_tables_end __initdata = ~0UL;
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int disable_pse __devinitdata = 0;
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/*
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* Machine setup..
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*/
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extern struct resource code_resource;
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extern struct resource data_resource;
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/* cpu data as detected by the assembly code in head.S */
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struct cpuinfo_x86 new_cpu_data __initdata = { 0, 0, 0, 0, -1, 1, 0, 0, -1 };
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/* common cpu data for all cpus */
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struct cpuinfo_x86 boot_cpu_data __read_mostly = { 0, 0, 0, 0, -1, 1, 0, 0, -1 };
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EXPORT_SYMBOL(boot_cpu_data);
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unsigned long mmu_cr4_features;
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/* for MCA, but anyone else can use it if they want */
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unsigned int machine_id;
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#ifdef CONFIG_MCA
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EXPORT_SYMBOL(machine_id);
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#endif
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unsigned int machine_submodel_id;
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unsigned int BIOS_revision;
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unsigned int mca_pentium_flag;
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/* Boot loader ID as an integer, for the benefit of proc_dointvec */
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int bootloader_type;
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/* user-defined highmem size */
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static unsigned int highmem_pages = -1;
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/*
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* Setup options
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*/
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struct drive_info_struct { char dummy[32]; } drive_info;
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#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD) || \
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defined(CONFIG_BLK_DEV_IDE_MODULE) || defined(CONFIG_BLK_DEV_HD_MODULE)
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EXPORT_SYMBOL(drive_info);
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#endif
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struct screen_info screen_info;
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EXPORT_SYMBOL(screen_info);
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struct apm_info apm_info;
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EXPORT_SYMBOL(apm_info);
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struct sys_desc_table_struct {
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unsigned short length;
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unsigned char table[0];
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};
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struct edid_info edid_info;
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EXPORT_SYMBOL_GPL(edid_info);
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struct ist_info ist_info;
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#if defined(CONFIG_X86_SPEEDSTEP_SMI) || \
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defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
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EXPORT_SYMBOL(ist_info);
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#endif
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extern void early_cpu_init(void);
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extern int root_mountflags;
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unsigned long saved_videomode;
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#define RAMDISK_IMAGE_START_MASK 0x07FF
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#define RAMDISK_PROMPT_FLAG 0x8000
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#define RAMDISK_LOAD_FLAG 0x4000
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static char command_line[COMMAND_LINE_SIZE];
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unsigned char __initdata boot_params[PARAM_SIZE];
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#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
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struct edd edd;
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#ifdef CONFIG_EDD_MODULE
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EXPORT_SYMBOL(edd);
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#endif
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/**
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* copy_edd() - Copy the BIOS EDD information
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* from boot_params into a safe place.
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*
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*/
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static inline void copy_edd(void)
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{
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memcpy(edd.mbr_signature, EDD_MBR_SIGNATURE, sizeof(edd.mbr_signature));
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memcpy(edd.edd_info, EDD_BUF, sizeof(edd.edd_info));
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edd.mbr_signature_nr = EDD_MBR_SIG_NR;
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edd.edd_info_nr = EDD_NR;
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}
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#else
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static inline void copy_edd(void)
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{
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}
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#endif
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int __initdata user_defined_memmap = 0;
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/*
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* "mem=nopentium" disables the 4MB page tables.
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* "mem=XXX[kKmM]" defines a memory region from HIGH_MEM
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* to <mem>, overriding the bios size.
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* "memmap=XXX[KkmM]@XXX[KkmM]" defines a memory region from
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* <start> to <start>+<mem>, overriding the bios size.
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*
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* HPA tells me bootloaders need to parse mem=, so no new
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* option should be mem= [also see Documentation/i386/boot.txt]
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*/
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static int __init parse_mem(char *arg)
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{
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if (!arg)
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return -EINVAL;
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if (strcmp(arg, "nopentium") == 0) {
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clear_bit(X86_FEATURE_PSE, boot_cpu_data.x86_capability);
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disable_pse = 1;
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} else {
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/* If the user specifies memory size, we
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* limit the BIOS-provided memory map to
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* that size. exactmap can be used to specify
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* the exact map. mem=number can be used to
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* trim the existing memory map.
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*/
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unsigned long long mem_size;
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mem_size = memparse(arg, &arg);
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limit_regions(mem_size);
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user_defined_memmap = 1;
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}
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return 0;
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}
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early_param("mem", parse_mem);
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#ifdef CONFIG_PROC_VMCORE
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/* elfcorehdr= specifies the location of elf core header
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* stored by the crashed kernel.
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*/
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static int __init parse_elfcorehdr(char *arg)
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{
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if (!arg)
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return -EINVAL;
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elfcorehdr_addr = memparse(arg, &arg);
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return 0;
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}
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early_param("elfcorehdr", parse_elfcorehdr);
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#endif /* CONFIG_PROC_VMCORE */
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/*
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* highmem=size forces highmem to be exactly 'size' bytes.
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* This works even on boxes that have no highmem otherwise.
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* This also works to reduce highmem size on bigger boxes.
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*/
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static int __init parse_highmem(char *arg)
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{
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if (!arg)
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return -EINVAL;
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highmem_pages = memparse(arg, &arg) >> PAGE_SHIFT;
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return 0;
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}
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early_param("highmem", parse_highmem);
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/*
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* vmalloc=size forces the vmalloc area to be exactly 'size'
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* bytes. This can be used to increase (or decrease) the
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* vmalloc area - the default is 128m.
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*/
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static int __init parse_vmalloc(char *arg)
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{
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if (!arg)
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return -EINVAL;
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__VMALLOC_RESERVE = memparse(arg, &arg);
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return 0;
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}
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early_param("vmalloc", parse_vmalloc);
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/*
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* reservetop=size reserves a hole at the top of the kernel address space which
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* a hypervisor can load into later. Needed for dynamically loaded hypervisors,
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* so relocating the fixmap can be done before paging initialization.
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*/
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static int __init parse_reservetop(char *arg)
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{
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unsigned long address;
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if (!arg)
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return -EINVAL;
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address = memparse(arg, &arg);
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reserve_top_address(address);
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return 0;
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}
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early_param("reservetop", parse_reservetop);
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/*
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* Determine low and high memory ranges:
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*/
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unsigned long __init find_max_low_pfn(void)
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{
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unsigned long max_low_pfn;
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max_low_pfn = max_pfn;
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if (max_low_pfn > MAXMEM_PFN) {
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if (highmem_pages == -1)
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highmem_pages = max_pfn - MAXMEM_PFN;
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if (highmem_pages + MAXMEM_PFN < max_pfn)
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max_pfn = MAXMEM_PFN + highmem_pages;
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if (highmem_pages + MAXMEM_PFN > max_pfn) {
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printk("only %luMB highmem pages available, ignoring highmem size of %uMB.\n", pages_to_mb(max_pfn - MAXMEM_PFN), pages_to_mb(highmem_pages));
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highmem_pages = 0;
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}
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max_low_pfn = MAXMEM_PFN;
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#ifndef CONFIG_HIGHMEM
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/* Maximum memory usable is what is directly addressable */
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printk(KERN_WARNING "Warning only %ldMB will be used.\n",
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MAXMEM>>20);
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if (max_pfn > MAX_NONPAE_PFN)
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printk(KERN_WARNING "Use a PAE enabled kernel.\n");
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else
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printk(KERN_WARNING "Use a HIGHMEM enabled kernel.\n");
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max_pfn = MAXMEM_PFN;
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#else /* !CONFIG_HIGHMEM */
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#ifndef CONFIG_X86_PAE
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if (max_pfn > MAX_NONPAE_PFN) {
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max_pfn = MAX_NONPAE_PFN;
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printk(KERN_WARNING "Warning only 4GB will be used.\n");
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printk(KERN_WARNING "Use a PAE enabled kernel.\n");
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}
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#endif /* !CONFIG_X86_PAE */
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#endif /* !CONFIG_HIGHMEM */
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} else {
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if (highmem_pages == -1)
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highmem_pages = 0;
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#ifdef CONFIG_HIGHMEM
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if (highmem_pages >= max_pfn) {
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printk(KERN_ERR "highmem size specified (%uMB) is bigger than pages available (%luMB)!.\n", pages_to_mb(highmem_pages), pages_to_mb(max_pfn));
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highmem_pages = 0;
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}
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if (highmem_pages) {
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if (max_low_pfn-highmem_pages < 64*1024*1024/PAGE_SIZE){
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printk(KERN_ERR "highmem size %uMB results in smaller than 64MB lowmem, ignoring it.\n", pages_to_mb(highmem_pages));
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highmem_pages = 0;
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}
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max_low_pfn -= highmem_pages;
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}
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#else
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if (highmem_pages)
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printk(KERN_ERR "ignoring highmem size on non-highmem kernel!\n");
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#endif
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}
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return max_low_pfn;
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}
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/*
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* workaround for Dell systems that neglect to reserve EBDA
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*/
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static void __init reserve_ebda_region(void)
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{
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unsigned int addr;
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addr = get_bios_ebda();
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if (addr)
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reserve_bootmem(addr, PAGE_SIZE);
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}
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#ifndef CONFIG_NEED_MULTIPLE_NODES
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void __init setup_bootmem_allocator(void);
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static unsigned long __init setup_memory(void)
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{
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/*
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* partially used pages are not usable - thus
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* we are rounding upwards:
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*/
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min_low_pfn = PFN_UP(init_pg_tables_end);
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find_max_pfn();
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max_low_pfn = find_max_low_pfn();
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#ifdef CONFIG_HIGHMEM
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highstart_pfn = highend_pfn = max_pfn;
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if (max_pfn > max_low_pfn) {
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highstart_pfn = max_low_pfn;
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}
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printk(KERN_NOTICE "%ldMB HIGHMEM available.\n",
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pages_to_mb(highend_pfn - highstart_pfn));
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num_physpages = highend_pfn;
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high_memory = (void *) __va(highstart_pfn * PAGE_SIZE - 1) + 1;
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#else
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num_physpages = max_low_pfn;
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high_memory = (void *) __va(max_low_pfn * PAGE_SIZE - 1) + 1;
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#endif
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#ifdef CONFIG_FLATMEM
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max_mapnr = num_physpages;
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#endif
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printk(KERN_NOTICE "%ldMB LOWMEM available.\n",
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pages_to_mb(max_low_pfn));
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setup_bootmem_allocator();
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return max_low_pfn;
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}
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void __init zone_sizes_init(void)
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{
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unsigned long max_zone_pfns[MAX_NR_ZONES];
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memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
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max_zone_pfns[ZONE_DMA] =
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virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
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max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
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#ifdef CONFIG_HIGHMEM
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max_zone_pfns[ZONE_HIGHMEM] = highend_pfn;
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add_active_range(0, 0, highend_pfn);
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#else
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add_active_range(0, 0, max_low_pfn);
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#endif
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free_area_init_nodes(max_zone_pfns);
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}
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#else
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extern unsigned long __init setup_memory(void);
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extern void zone_sizes_init(void);
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#endif /* !CONFIG_NEED_MULTIPLE_NODES */
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void __init setup_bootmem_allocator(void)
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{
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unsigned long bootmap_size;
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/*
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* Initialize the boot-time allocator (with low memory only):
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*/
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bootmap_size = init_bootmem(min_low_pfn, max_low_pfn);
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register_bootmem_low_pages(max_low_pfn);
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/*
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* Reserve the bootmem bitmap itself as well. We do this in two
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* steps (first step was init_bootmem()) because this catches
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* the (very unlikely) case of us accidentally initializing the
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* bootmem allocator with an invalid RAM area.
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*/
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reserve_bootmem(__pa_symbol(_text), (PFN_PHYS(min_low_pfn) +
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bootmap_size + PAGE_SIZE-1) - __pa_symbol(_text));
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/*
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* reserve physical page 0 - it's a special BIOS page on many boxes,
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* enabling clean reboots, SMP operation, laptop functions.
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*/
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reserve_bootmem(0, PAGE_SIZE);
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/* reserve EBDA region, it's a 4K region */
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reserve_ebda_region();
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/* could be an AMD 768MPX chipset. Reserve a page before VGA to prevent
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PCI prefetch into it (errata #56). Usually the page is reserved anyways,
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unless you have no PS/2 mouse plugged in. */
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if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
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boot_cpu_data.x86 == 6)
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reserve_bootmem(0xa0000 - 4096, 4096);
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#ifdef CONFIG_SMP
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/*
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* But first pinch a few for the stack/trampoline stuff
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* FIXME: Don't need the extra page at 4K, but need to fix
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* trampoline before removing it. (see the GDT stuff)
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*/
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reserve_bootmem(PAGE_SIZE, PAGE_SIZE);
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#endif
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#ifdef CONFIG_ACPI_SLEEP
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/*
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* Reserve low memory region for sleep support.
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*/
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acpi_reserve_bootmem();
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#endif
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#ifdef CONFIG_X86_FIND_SMP_CONFIG
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/*
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* Find and reserve possible boot-time SMP configuration:
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*/
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find_smp_config();
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#endif
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numa_kva_reserve();
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#ifdef CONFIG_BLK_DEV_INITRD
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if (LOADER_TYPE && INITRD_START) {
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if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) {
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reserve_bootmem(INITRD_START, INITRD_SIZE);
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initrd_start =
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INITRD_START ? INITRD_START + PAGE_OFFSET : 0;
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initrd_end = initrd_start+INITRD_SIZE;
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}
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else {
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printk(KERN_ERR "initrd extends beyond end of memory "
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"(0x%08lx > 0x%08lx)\ndisabling initrd\n",
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INITRD_START + INITRD_SIZE,
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max_low_pfn << PAGE_SHIFT);
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initrd_start = 0;
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}
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}
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#endif
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#ifdef CONFIG_KEXEC
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if (crashk_res.start != crashk_res.end)
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reserve_bootmem(crashk_res.start,
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crashk_res.end - crashk_res.start + 1);
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#endif
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}
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/*
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* The node 0 pgdat is initialized before all of these because
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* it's needed for bootmem. node>0 pgdats have their virtual
|
|
* space allocated before the pagetables are in place to access
|
|
* them, so they can't be cleared then.
|
|
*
|
|
* This should all compile down to nothing when NUMA is off.
|
|
*/
|
|
void __init remapped_pgdat_init(void)
|
|
{
|
|
int nid;
|
|
|
|
for_each_online_node(nid) {
|
|
if (nid != 0)
|
|
memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_MCA
|
|
static void set_mca_bus(int x)
|
|
{
|
|
MCA_bus = x;
|
|
}
|
|
#else
|
|
static void set_mca_bus(int x) { }
|
|
#endif
|
|
|
|
/* Overridden in paravirt.c if CONFIG_PARAVIRT */
|
|
char * __attribute__((weak)) memory_setup(void)
|
|
{
|
|
return machine_specific_memory_setup();
|
|
}
|
|
|
|
/*
|
|
* Determine if we were loaded by an EFI loader. If so, then we have also been
|
|
* passed the efi memmap, systab, etc., so we should use these data structures
|
|
* for initialization. Note, the efi init code path is determined by the
|
|
* global efi_enabled. This allows the same kernel image to be used on existing
|
|
* systems (with a traditional BIOS) as well as on EFI systems.
|
|
*/
|
|
void __init setup_arch(char **cmdline_p)
|
|
{
|
|
unsigned long max_low_pfn;
|
|
|
|
memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
|
|
pre_setup_arch_hook();
|
|
early_cpu_init();
|
|
|
|
/*
|
|
* FIXME: This isn't an official loader_type right
|
|
* now but does currently work with elilo.
|
|
* If we were configured as an EFI kernel, check to make
|
|
* sure that we were loaded correctly from elilo and that
|
|
* the system table is valid. If not, then initialize normally.
|
|
*/
|
|
#ifdef CONFIG_EFI
|
|
if ((LOADER_TYPE == 0x50) && EFI_SYSTAB)
|
|
efi_enabled = 1;
|
|
#endif
|
|
|
|
ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
|
|
drive_info = DRIVE_INFO;
|
|
screen_info = SCREEN_INFO;
|
|
edid_info = EDID_INFO;
|
|
apm_info.bios = APM_BIOS_INFO;
|
|
ist_info = IST_INFO;
|
|
saved_videomode = VIDEO_MODE;
|
|
if( SYS_DESC_TABLE.length != 0 ) {
|
|
set_mca_bus(SYS_DESC_TABLE.table[3] & 0x2);
|
|
machine_id = SYS_DESC_TABLE.table[0];
|
|
machine_submodel_id = SYS_DESC_TABLE.table[1];
|
|
BIOS_revision = SYS_DESC_TABLE.table[2];
|
|
}
|
|
bootloader_type = LOADER_TYPE;
|
|
|
|
#ifdef CONFIG_BLK_DEV_RAM
|
|
rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
|
|
rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
|
|
rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
|
|
#endif
|
|
ARCH_SETUP
|
|
if (efi_enabled)
|
|
efi_init();
|
|
else {
|
|
printk(KERN_INFO "BIOS-provided physical RAM map:\n");
|
|
print_memory_map(memory_setup());
|
|
}
|
|
|
|
copy_edd();
|
|
|
|
if (!MOUNT_ROOT_RDONLY)
|
|
root_mountflags &= ~MS_RDONLY;
|
|
init_mm.start_code = (unsigned long) _text;
|
|
init_mm.end_code = (unsigned long) _etext;
|
|
init_mm.end_data = (unsigned long) _edata;
|
|
init_mm.brk = init_pg_tables_end + PAGE_OFFSET;
|
|
|
|
code_resource.start = virt_to_phys(_text);
|
|
code_resource.end = virt_to_phys(_etext)-1;
|
|
data_resource.start = virt_to_phys(_etext);
|
|
data_resource.end = virt_to_phys(_edata)-1;
|
|
|
|
parse_early_param();
|
|
|
|
if (user_defined_memmap) {
|
|
printk(KERN_INFO "user-defined physical RAM map:\n");
|
|
print_memory_map("user");
|
|
}
|
|
|
|
strlcpy(command_line, saved_command_line, COMMAND_LINE_SIZE);
|
|
*cmdline_p = command_line;
|
|
|
|
max_low_pfn = setup_memory();
|
|
|
|
/*
|
|
* NOTE: before this point _nobody_ is allowed to allocate
|
|
* any memory using the bootmem allocator. Although the
|
|
* alloctor is now initialised only the first 8Mb of the kernel
|
|
* virtual address space has been mapped. All allocations before
|
|
* paging_init() has completed must use the alloc_bootmem_low_pages()
|
|
* variant (which allocates DMA'able memory) and care must be taken
|
|
* not to exceed the 8Mb limit.
|
|
*/
|
|
|
|
#ifdef CONFIG_SMP
|
|
smp_alloc_memory(); /* AP processor realmode stacks in low memory*/
|
|
#endif
|
|
paging_init();
|
|
remapped_pgdat_init();
|
|
sparse_init();
|
|
zone_sizes_init();
|
|
|
|
/*
|
|
* NOTE: at this point the bootmem allocator is fully available.
|
|
*/
|
|
|
|
dmi_scan_machine();
|
|
|
|
#ifdef CONFIG_X86_GENERICARCH
|
|
generic_apic_probe();
|
|
#endif
|
|
if (efi_enabled)
|
|
efi_map_memmap();
|
|
|
|
#ifdef CONFIG_ACPI
|
|
/*
|
|
* Parse the ACPI tables for possible boot-time SMP configuration.
|
|
*/
|
|
acpi_boot_table_init();
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCI
|
|
#ifdef CONFIG_X86_IO_APIC
|
|
check_acpi_pci(); /* Checks more than just ACPI actually */
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef CONFIG_ACPI
|
|
acpi_boot_init();
|
|
|
|
#if defined(CONFIG_SMP) && defined(CONFIG_X86_PC)
|
|
if (def_to_bigsmp)
|
|
printk(KERN_WARNING "More than 8 CPUs detected and "
|
|
"CONFIG_X86_PC cannot handle it.\nUse "
|
|
"CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n");
|
|
#endif
|
|
#endif
|
|
#ifdef CONFIG_X86_LOCAL_APIC
|
|
if (smp_found_config)
|
|
get_smp_config();
|
|
#endif
|
|
|
|
register_memory();
|
|
|
|
#ifdef CONFIG_VT
|
|
#if defined(CONFIG_VGA_CONSOLE)
|
|
if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
|
|
conswitchp = &vga_con;
|
|
#elif defined(CONFIG_DUMMY_CONSOLE)
|
|
conswitchp = &dummy_con;
|
|
#endif
|
|
#endif
|
|
tsc_init();
|
|
}
|
|
|
|
static __init int add_pcspkr(void)
|
|
{
|
|
struct platform_device *pd;
|
|
int ret;
|
|
|
|
pd = platform_device_alloc("pcspkr", -1);
|
|
if (!pd)
|
|
return -ENOMEM;
|
|
|
|
ret = platform_device_add(pd);
|
|
if (ret)
|
|
platform_device_put(pd);
|
|
|
|
return ret;
|
|
}
|
|
device_initcall(add_pcspkr);
|
|
|
|
/*
|
|
* Local Variables:
|
|
* mode:c
|
|
* c-file-style:"k&r"
|
|
* c-basic-offset:8
|
|
* End:
|
|
*/
|