Module Name: src Committed By: bouyer Date: Wed Sep 21 20:21:16 UTC 2022
Modified Files: src/sys/arch/arm/sunxi: sunxi_can.c Log Message: Just skipping sunxi_can_rx_intr() if the DATA_OR flag is set isn't enough to properly recover from overrrun in all case. So go the linux way and reset the hardware. Don't write SUNXI_CAN_INT_RX_FLAG to SUNXI_CAN_INT_REG, this could race with hardware and clear the interrupt while there are new packets received. SUNXI_CAN_INT_RX_FLAG clears automatically when all pending packets have been read, so when no more packets are pending just read SUNXI_CAN_INT_REG again and process other interrupts, if any (or RX if there are new packets pending). With this change it seems I get overruns less often in my use case. To generate a diff of this commit: cvs rdiff -u -r1.10 -r1.11 src/sys/arch/arm/sunxi/sunxi_can.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.