commit 83a0a2ea0b991927e42984be220329e776ce7137
Author: Ard Biesheuvel <ardb@xxxxxxxxxx>
Date: Fri Jul 20 10:47:18 2018 +0900
efi/x86: Prevent reentrant firmware calls in mixed mode
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
arch/x86/platform/efi/efi_64.c | 32 ++++++++++++++++----------------
1 file changed, 16 insertions(+), 16 deletions(-)
diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
index fa8506e76bbe..8e2d23938aa3 100644
--- a/arch/x86/platform/efi/efi_64.c
+++ b/arch/x86/platform/efi/efi_64.c
@@ -572,16 +572,16 @@ static efi_status_t efi_thunk_get_time(efi_time_t *tm, efi_time_cap_t *tc)
u32 phys_tm, phys_tc;
unsigned long flags;
- spin_lock(&rtc_lock);
- spin_lock_irqsave(&efi_runtime_lock, flags);
+ spin_lock_irqsave(&rtc_lock, flags);
+ spin_lock(&efi_runtime_lock);
phys_tm = virt_to_phys_or_null(tm);
phys_tc = virt_to_phys_or_null(tc);
status = efi_thunk(get_time, phys_tm, phys_tc);
- spin_unlock_irqrestore(&efi_runtime_lock, flags);
- spin_unlock(&rtc_lock);
+ spin_unlock(&efi_runtime_lock);
+ spin_unlock_irqrestore(&rtc_lock, flags);
return status;
}
@@ -592,15 +592,15 @@ static efi_status_t efi_thunk_set_time(efi_time_t *tm)
u32 phys_tm;
unsigned long flags;
- spin_lock(&rtc_lock);
- spin_lock_irqsave(&efi_runtime_lock, flags);
+ spin_lock_irqave(&rtc_lock, flags);
+ spin_lock(&efi_runtime_lock);
phys_tm = virt_to_phys_or_null(tm);
status = efi_thunk(set_time, phys_tm);
- spin_unlock_irqrestore(&efi_runtime_lock, flags);
- spin_unlock(&rtc_lock);
+ spin_unlock(&efi_runtime_lock);
+ spin_unlock_irqrestore(&rtc_lock, flags);
return status;
}
@@ -613,8 +613,8 @@ efi_thunk_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
u32 phys_enabled, phys_pending, phys_tm;
unsigned long flags;
- spin_lock(&rtc_lock);
- spin_lock_irqsave(&efi_runtime_lock, flags);
+ spin_lock_irqsave(&rtc_lock, flags);
+ spin_lock(&efi_runtime_lock);
phys_enabled = virt_to_phys_or_null(enabled);
phys_pending = virt_to_phys_or_null(pending);
@@ -623,8 +623,8 @@ efi_thunk_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
status = efi_thunk(get_wakeup_time, phys_enabled,
phys_pending, phys_tm);
- spin_unlock_irqrestore(&efi_runtime_lock, flags);
- spin_unlock(&rtc_lock);
+ spin_unlock(&efi_runtime_lock);
+ spin_unlock_irqrestore(&rtc_lock, flags);
return status;
}
@@ -636,15 +636,15 @@ efi_thunk_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
u32 phys_tm;
unsigned long flags;
- spin_lock(&rtc_lock);
- spin_lock_irqsave(&efi_runtime_lock, flags);
+ spin_lock_irqsave(&rtc_lock, flags);
+ spin_lock(&efi_runtime_lock);
phys_tm = virt_to_phys_or_null(tm);
status = efi_thunk(set_wakeup_time, enabled, phys_tm);
- spin_unlock_irqrestore(&efi_runtime_lock, flags);
- spin_unlock(&rtc_lock);
+ spin_unlock(&efi_runtime_lock);
+ spin_unlock_irqrestore(&rtc_lock, flags);
return status;
}
--
2.25.1
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