From 3ae9e6042fc1ebc876e32142dde606f7890518b2 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Wed, 6 Oct 2010 10:16:02 +0000 Subject: Cache the USB_DeviceState variable internally in the library core when multiple checks are required in a single loop iteration, to reduce compiled code size. --- LUFA/Drivers/USB/LowLevel/Endpoint.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'LUFA/Drivers/USB/LowLevel') diff --git a/LUFA/Drivers/USB/LowLevel/Endpoint.c b/LUFA/Drivers/USB/LowLevel/Endpoint.c index fc54e115a..fc2bff154 100644 --- a/LUFA/Drivers/USB/LowLevel/Endpoint.c +++ b/LUFA/Drivers/USB/LowLevel/Endpoint.c @@ -115,10 +115,12 @@ uint8_t Endpoint_WaitUntilReady(void) return ENDPOINT_READYWAIT_NoError; } - if (USB_DeviceState == DEVICE_STATE_Unattached) + uint8_t USB_DeviceState_LCL = USB_DeviceState; + + if (USB_DeviceState_LCL == DEVICE_STATE_Unattached) return ENDPOINT_READYWAIT_DeviceDisconnected; - else if (USB_DeviceState == DEVICE_STATE_Suspended) - return ENDPOINT_READYWAIT_BusSuspended; + else if (USB_DeviceState_LCL == DEVICE_STATE_Suspended) + return ENDPOINT_READYWAIT_BusSuspended; else if (Endpoint_IsStalled()) return ENDPOINT_READYWAIT_EndpointStalled; -- cgit v1.2.3