From f8a21fff171aa272360c89dab5faca4f688a656a Mon Sep 17 00:00:00 2001 From: Hubert Denkmair Date: Sun, 12 Mar 2023 15:51:07 +0100 Subject: [PATCH] dcd_write_packet_memory: use volatile modifier for destination pointer --- src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c b/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c index 21ae8e6e8..e2e1cf484 100644 --- a/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c +++ b/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c @@ -1228,8 +1228,8 @@ void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr) static bool dcd_write_packet_memory(uint16_t dst, const void *__restrict src, size_t wNBytes) { // FIXME original function uses byte-access to source memory (to support non-aligned buffers) - const uint32_t* src32 = (uint32_t*)(src); - uint32_t* dst32 = (uint32_t*)(USB_PMAADDR + dst); + const uint32_t* src32 = (const uint32_t*)(src); + volatile uint32_t* dst32 = (volatile uint32_t*)(USB_PMAADDR + dst); for (unsigned n=wNBytes/4; n>0; --n) { *dst32++ = *src32++; }