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path: root/LUFA/Drivers/USB/Class/Device/MassStorage.c
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Diffstat (limited to 'LUFA/Drivers/USB/Class/Device/MassStorage.c')
-rw-r--r--LUFA/Drivers/USB/Class/Device/MassStorage.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/LUFA/Drivers/USB/Class/Device/MassStorage.c b/LUFA/Drivers/USB/Class/Device/MassStorage.c
index 9d73989b70..ceb4b9647d 100644
--- a/LUFA/Drivers/USB/Class/Device/MassStorage.c
+++ b/LUFA/Drivers/USB/Class/Device/MassStorage.c
@@ -96,7 +96,7 @@ bool MS_Device_ConfigureEndpoints(USB_ClassInfo_MS_Device_t* const MSInterfaceIn
void MS_Device_USBTask(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
{
- if (!(USB_IsConnected))
+ if (!(USB_IsConnected) || !(USB_ConfigurationNumber))
return;
Endpoint_SelectEndpoint(MSInterfaceInfo->Config.DataOUTEndpointNumber);