diff options
| author | Hector Martin | 2023-10-29 15:37:44 +0900 |
|---|---|---|
| committer | Marek Vasut | 2023-12-01 14:06:04 +0100 |
| commit | a14843fdac24bf18bd58152b959ca0425adaa1e4 (patch) | |
| tree | 4220f61f166f8095a9df0d766d5d56f2d6428a7c /drivers/usb | |
| parent | 2fd7037122a920ae22377b06aa5b32651cc71f13 (diff) | |
usb: xhci: Fix DMA address calculation in queue_trb
We need to get the DMA address before incrementing the pointer, as that
might move us onto another segment.
Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Marek Vasut <marex@denx.de>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index ae0ab5744df..b60661fe05e 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -202,6 +202,7 @@ static dma_addr_t queue_trb(struct xhci_ctrl *ctrl, struct xhci_ring *ring, bool more_trbs_coming, unsigned int *trb_fields) { struct xhci_generic_trb *trb; + dma_addr_t addr; int i; trb = &ring->enqueue->generic; @@ -211,9 +212,11 @@ static dma_addr_t queue_trb(struct xhci_ctrl *ctrl, struct xhci_ring *ring, xhci_flush_cache((uintptr_t)trb, sizeof(struct xhci_generic_trb)); + addr = xhci_trb_virt_to_dma(ring->enq_seg, (union xhci_trb *)trb); + inc_enq(ctrl, ring, more_trbs_coming); - return xhci_trb_virt_to_dma(ring->enq_seg, (union xhci_trb *)trb); + return addr; } /** |