diff options
Diffstat (limited to 'drivers/usb/dwc2/hcd.c')
| -rw-r--r-- | drivers/usb/dwc2/hcd.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 0e5435330c07..120c8f716acf 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -2552,8 +2552,10 @@ static void dwc2_free_dma_aligned_buffer(struct urb *urb) return; /* Restore urb->transfer_buffer from the end of the allocated area */ - memcpy(&stored_xfer_buffer, urb->transfer_buffer + - urb->transfer_buffer_length, sizeof(urb->transfer_buffer)); + memcpy(&stored_xfer_buffer, + PTR_ALIGN(urb->transfer_buffer + urb->transfer_buffer_length, + dma_get_cache_alignment()), + sizeof(urb->transfer_buffer)); if (usb_urb_dir_in(urb)) memcpy(stored_xfer_buffer, urb->transfer_buffer, @@ -2580,6 +2582,7 @@ static int dwc2_alloc_dma_aligned_buffer(struct urb *urb, gfp_t mem_flags) * DMA */ kmalloc_size = urb->transfer_buffer_length + + (dma_get_cache_alignment() - 1) + sizeof(urb->transfer_buffer); kmalloc_ptr = kmalloc(kmalloc_size, mem_flags); @@ -2590,7 +2593,8 @@ static int dwc2_alloc_dma_aligned_buffer(struct urb *urb, gfp_t mem_flags) * Position value of original urb->transfer_buffer pointer to the end * of allocation for later referencing */ - memcpy(kmalloc_ptr + urb->transfer_buffer_length, + memcpy(PTR_ALIGN(kmalloc_ptr + urb->transfer_buffer_length, + dma_get_cache_alignment()), &urb->transfer_buffer, sizeof(urb->transfer_buffer)); if (usb_urb_dir_out(urb)) |