diff options
| -rw-r--r-- | drivers/usb/host/dwc2.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c index ae7d8fb..0e5df15 100644 --- a/drivers/usb/host/dwc2.c +++ b/drivers/usb/host/dwc2.c @@ -817,12 +817,19 @@ static int transfer_chunk(struct dwc2_hc_regs *hc_regs, void *aligned_buffer, (*pid << DWC2_HCTSIZ_PID_OFFSET), &hc_regs->hctsiz); - if (!in && xfer_len) { - memcpy(aligned_buffer, buffer, xfer_len); - - flush_dcache_range((unsigned long)aligned_buffer, - (unsigned long)aligned_buffer + - roundup(xfer_len, ARCH_DMA_MINALIGN)); + if (xfer_len) { + if (in) { + invalidate_dcache_range( + (uintptr_t)aligned_buffer, + (uintptr_t)aligned_buffer + + roundup(xfer_len, ARCH_DMA_MINALIGN)); + } else { + memcpy(aligned_buffer, buffer, xfer_len); + flush_dcache_range( + (uintptr_t)aligned_buffer, + (uintptr_t)aligned_buffer + + roundup(xfer_len, ARCH_DMA_MINALIGN)); + } } writel(phys_to_bus((unsigned long)aligned_buffer), &hc_regs->hcdma); |