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Diffstat (limited to 'arch/x86/kernel/apm_32.c')
-rw-r--r--arch/x86/kernel/apm_32.c41
1 files changed, 3 insertions, 38 deletions
diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c
index 60e330cdbd17..b37ab1095707 100644
--- a/arch/x86/kernel/apm_32.c
+++ b/arch/x86/kernel/apm_32.c
@@ -239,12 +239,6 @@ extern int (*console_blank_hook)(int);
#endif
/*
- * The apm_bios device is one of the misc char devices.
- * This is its minor number.
- */
-#define APM_MINOR_DEV 134
-
-/*
* Various options can be changed at boot time as follows:
* (We allow underscores for compatibility with the modules code)
* apm=on/off enable/disable APM
@@ -426,7 +420,7 @@ static DEFINE_MUTEX(apm_mutex);
* This is for buggy BIOS's that refer to (real mode) segment 0x40
* even though they are called in protected mode.
*/
-static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092,
+static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(DESC_DATA32_BIOS,
(unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1);
static const char driver_version[] = "1.16ac"; /* no spaces */
@@ -609,7 +603,7 @@ static long __apm_bios_call(void *_call)
apm_irq_save(flags);
firmware_restrict_branch_speculation_start();
- ibt = ibt_save();
+ ibt = ibt_save(true);
APM_DO_SAVE_SEGS;
apm_bios_call_asm(call->func, call->ebx, call->ecx,
&call->eax, &call->ebx, &call->ecx, &call->edx,
@@ -690,7 +684,7 @@ static long __apm_bios_call_simple(void *_call)
apm_irq_save(flags);
firmware_restrict_branch_speculation_start();
- ibt = ibt_save();
+ ibt = ibt_save(true);
APM_DO_SAVE_SEGS;
error = apm_bios_call_simple_asm(call->func, call->ebx, call->ecx,
&call->eax);
@@ -1061,35 +1055,6 @@ static int apm_get_power_status(u_short *status, u_short *bat, u_short *life)
return APM_SUCCESS;
}
-#if 0
-static int apm_get_battery_status(u_short which, u_short *status,
- u_short *bat, u_short *life, u_short *nbat)
-{
- u32 eax;
- u32 ebx;
- u32 ecx;
- u32 edx;
- u32 esi;
-
- if (apm_info.connection_version < 0x0102) {
- /* pretend we only have one battery. */
- if (which != 1)
- return APM_BAD_DEVICE;
- *nbat = 1;
- return apm_get_power_status(status, bat, life);
- }
-
- if (apm_bios_call(APM_FUNC_GET_STATUS, (0x8000 | (which)), 0, &eax,
- &ebx, &ecx, &edx, &esi))
- return (eax >> 8) & 0xff;
- *status = ebx;
- *bat = ecx;
- *life = edx;
- *nbat = esi;
- return APM_SUCCESS;
-}
-#endif
-
/**
* apm_engage_power_management - enable PM on a device
* @device: identity of device