diff options
-rw-r--r-- | arch/x86/kernel/acpi/sleep.c | 4 | ||||
-rw-r--r-- | drivers/acpi/sleep.c | 51 |
2 files changed, 28 insertions, 27 deletions
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index 707c1f6f95fa..a60c1f3bcb87 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c | |||
@@ -156,11 +156,11 @@ static int __init acpi_sleep_setup(char *str) | |||
156 | #ifdef CONFIG_HIBERNATION | 156 | #ifdef CONFIG_HIBERNATION |
157 | if (strncmp(str, "s4_nohwsig", 10) == 0) | 157 | if (strncmp(str, "s4_nohwsig", 10) == 0) |
158 | acpi_no_s4_hw_signature(); | 158 | acpi_no_s4_hw_signature(); |
159 | if (strncmp(str, "s4_nonvs", 8) == 0) | ||
160 | acpi_s4_no_nvs(); | ||
159 | #endif | 161 | #endif |
160 | if (strncmp(str, "old_ordering", 12) == 0) | 162 | if (strncmp(str, "old_ordering", 12) == 0) |
161 | acpi_old_suspend_ordering(); | 163 | acpi_old_suspend_ordering(); |
162 | if (strncmp(str, "s4_nonvs", 8) == 0) | ||
163 | acpi_s4_no_nvs(); | ||
164 | str = strchr(str, ','); | 164 | str = strchr(str, ','); |
165 | if (str != NULL) | 165 | if (str != NULL) |
166 | str += strspn(str, ", \t"); | 166 | str += strspn(str, ", \t"); |
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 7e3c609cbef2..af85f5ba1be7 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c | |||
@@ -90,31 +90,6 @@ void __init acpi_old_suspend_ordering(void) | |||
90 | old_suspend_ordering = true; | 90 | old_suspend_ordering = true; |
91 | } | 91 | } |
92 | 92 | ||
93 | /* | ||
94 | * According to the ACPI specification the BIOS should make sure that ACPI is | ||
95 | * enabled and SCI_EN bit is set on wake-up from S1 - S3 sleep states. Still, | ||
96 | * some BIOSes don't do that and therefore we use acpi_enable() to enable ACPI | ||
97 | * on such systems during resume. Unfortunately that doesn't help in | ||
98 | * particularly pathological cases in which SCI_EN has to be set directly on | ||
99 | * resume, although the specification states very clearly that this flag is | ||
100 | * owned by the hardware. The set_sci_en_on_resume variable will be set in such | ||
101 | * cases. | ||
102 | */ | ||
103 | static bool set_sci_en_on_resume; | ||
104 | /* | ||
105 | * The ACPI specification wants us to save NVS memory regions during hibernation | ||
106 | * and to restore them during the subsequent resume. However, it is not certain | ||
107 | * if this mechanism is going to work on all machines, so we allow the user to | ||
108 | * disable this mechanism using the 'acpi_sleep=s4_nonvs' kernel command line | ||
109 | * option. | ||
110 | */ | ||
111 | static bool s4_no_nvs; | ||
112 | |||
113 | void __init acpi_s4_no_nvs(void) | ||
114 | { | ||
115 | s4_no_nvs = true; | ||
116 | } | ||
117 | |||
118 | /** | 93 | /** |
119 | * acpi_pm_disable_gpes - Disable the GPEs. | 94 | * acpi_pm_disable_gpes - Disable the GPEs. |
120 | */ | 95 | */ |
@@ -193,6 +168,18 @@ static void acpi_pm_end(void) | |||
193 | #endif /* CONFIG_ACPI_SLEEP */ | 168 | #endif /* CONFIG_ACPI_SLEEP */ |
194 | 169 | ||
195 | #ifdef CONFIG_SUSPEND | 170 | #ifdef CONFIG_SUSPEND |
171 | /* | ||
172 | * According to the ACPI specification the BIOS should make sure that ACPI is | ||
173 | * enabled and SCI_EN bit is set on wake-up from S1 - S3 sleep states. Still, | ||
174 | * some BIOSes don't do that and therefore we use acpi_enable() to enable ACPI | ||
175 | * on such systems during resume. Unfortunately that doesn't help in | ||
176 | * particularly pathological cases in which SCI_EN has to be set directly on | ||
177 | * resume, although the specification states very clearly that this flag is | ||
178 | * owned by the hardware. The set_sci_en_on_resume variable will be set in such | ||
179 | * cases. | ||
180 | */ | ||
181 | static bool set_sci_en_on_resume; | ||
182 | |||
196 | extern void do_suspend_lowlevel(void); | 183 | extern void do_suspend_lowlevel(void); |
197 | 184 | ||
198 | static u32 acpi_suspend_states[] = { | 185 | static u32 acpi_suspend_states[] = { |
@@ -396,6 +383,20 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = { | |||
396 | #endif /* CONFIG_SUSPEND */ | 383 | #endif /* CONFIG_SUSPEND */ |
397 | 384 | ||
398 | #ifdef CONFIG_HIBERNATION | 385 | #ifdef CONFIG_HIBERNATION |
386 | /* | ||
387 | * The ACPI specification wants us to save NVS memory regions during hibernation | ||
388 | * and to restore them during the subsequent resume. However, it is not certain | ||
389 | * if this mechanism is going to work on all machines, so we allow the user to | ||
390 | * disable this mechanism using the 'acpi_sleep=s4_nonvs' kernel command line | ||
391 | * option. | ||
392 | */ | ||
393 | static bool s4_no_nvs; | ||
394 | |||
395 | void __init acpi_s4_no_nvs(void) | ||
396 | { | ||
397 | s4_no_nvs = true; | ||
398 | } | ||
399 | |||
399 | static unsigned long s4_hardware_signature; | 400 | static unsigned long s4_hardware_signature; |
400 | static struct acpi_table_facs *facs; | 401 | static struct acpi_table_facs *facs; |
401 | static bool nosigcheck; | 402 | static bool nosigcheck; |