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dcd_write_packet_memory: use volatile modifier for destination pointer

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This commit is contained in:
Hubert Denkmair 2023-03-12 15:51:07 +01:00
parent af577d2b6d
commit f8a21fff17
1 changed files with 2 additions and 2 deletions
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4
src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c
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@ -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) 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) // FIXME original function uses byte-access to source memory (to support non-aligned buffers)
const uint32_t* src32 = (uint32_t*)(src); const uint32_t* src32 = (const uint32_t*)(src);
uint32_t* dst32 = (uint32_t*)(USB_PMAADDR + dst); volatile uint32_t* dst32 = (volatile uint32_t*)(USB_PMAADDR + dst);
for (unsigned n=wNBytes/4; n>0; --n) { for (unsigned n=wNBytes/4; n>0; --n) {
*dst32++ = *src32++; *dst32++ = *src32++;
} }