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Diffstat (limited to 'LUFA/Drivers/USB/Core/UC3/USBInterrupt_UC3.h')
-rw-r--r--LUFA/Drivers/USB/Core/UC3/USBInterrupt_UC3.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/LUFA/Drivers/USB/Core/UC3/USBInterrupt_UC3.h b/LUFA/Drivers/USB/Core/UC3/USBInterrupt_UC3.h
index 95a85cf69..a9ad56611 100644
--- a/LUFA/Drivers/USB/Core/UC3/USBInterrupt_UC3.h
+++ b/LUFA/Drivers/USB/Core/UC3/USBInterrupt_UC3.h
@@ -87,14 +87,15 @@
static inline uint_reg_t USB_INT_GetGlobalEnableState(void)
{
GCC_MEMORY_BARRIER();
- return (__builtin_mfsr(AVR32_SR) & AVR32_SR_GM);
+ return __builtin_mfsr(AVR32_SR);
}
static inline void USB_INT_SetGlobalEnableState(uint_reg_t GlobalIntState) ATTR_ALWAYS_INLINE;
static inline void USB_INT_SetGlobalEnableState(uint_reg_t GlobalIntState)
{
GCC_MEMORY_BARRIER();
- __builtin_ssrf(AVR32_SR_GM_OFFSET, GlobalIntState);
+ if (GlobalIntState & AVR32_SR_GM)
+ __builtin_ssrf(AVR32_SR_GM_OFFSET);
GCC_MEMORY_BARRIER();
}