From cee980c598ce3ff83f2980280d53c906b7bf1b19 Mon Sep 17 00:00:00 2001 From: Ben Evans Date: Mon, 19 Jul 2021 17:45:12 +1000 Subject: [PATCH] Fix for dcd_synopsys driver integer overflow in HS mode (issue #968). --- src/portable/st/synopsys/dcd_synopsys.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/portable/st/synopsys/dcd_synopsys.c b/src/portable/st/synopsys/dcd_synopsys.c index 8a196e06..c15694eb 100644 --- a/src/portable/st/synopsys/dcd_synopsys.c +++ b/src/portable/st/synopsys/dcd_synopsys.c @@ -656,7 +656,7 @@ bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t } uint16_t num_packets = (total_bytes / xfer->max_size); - uint8_t const short_packet_size = total_bytes % xfer->max_size; + uint16_t const short_packet_size = total_bytes % xfer->max_size; // Zero-size packet is special case. if(short_packet_size > 0 || (total_bytes == 0)) { @@ -687,7 +687,7 @@ bool dcd_edpt_xfer_fifo (uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff, uint16 xfer->total_len = total_bytes; uint16_t num_packets = (total_bytes / xfer->max_size); - uint8_t const short_packet_size = total_bytes % xfer->max_size; + uint16_t const short_packet_size = total_bytes % xfer->max_size; // Zero-size packet is special case. if(short_packet_size > 0 || (total_bytes == 0)) num_packets++;