diff options
Diffstat (limited to 'drivers/usb/host/xhci-ring.c')
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 45 |
1 files changed, 24 insertions, 21 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 73f8db0..766f6a6 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2741,6 +2741,11 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, td->last_trb = ep_ring->enqueue; field |= TRB_IOC; } + + /* Only set interrupt on short packet for IN endpoints */ + if (usb_urb_dir_in(urb)) + field |= TRB_ISP; + xhci_dbg(xhci, " sg entry: dma = %#x, len = %#x (%d), " "64KB boundary at %#x, end dma = %#x\n", (unsigned int) addr, trb_buff_len, trb_buff_len, @@ -2766,12 +2771,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, lower_32_bits(addr), upper_32_bits(addr), length_field, - /* We always want to know if the TRB was short, - * or we won't get an event when it completes. - * (Unless we use event data TRBs, which are a - * waste of space and HC resources.) - */ - field | TRB_ISP | TRB_TYPE(TRB_NORMAL)); + field | TRB_TYPE(TRB_NORMAL)); --num_trbs; running_total += trb_buff_len; @@ -2905,6 +2905,11 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, td->last_trb = ep_ring->enqueue; field |= TRB_IOC; } + + /* Only set interrupt on short packet for IN endpoints */ + if (usb_urb_dir_in(urb)) + field |= TRB_ISP; + remainder = xhci_td_remainder(urb->transfer_buffer_length - running_total); length_field = TRB_LEN(trb_buff_len) | @@ -2918,12 +2923,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, lower_32_bits(addr), upper_32_bits(addr), length_field, - /* We always want to know if the TRB was short, - * or we won't get an event when it completes. - * (Unless we use event data TRBs, which are a - * waste of space and HC resources.) - */ - field | TRB_ISP | TRB_TYPE(TRB_NORMAL)); + field | TRB_TYPE(TRB_NORMAL)); --num_trbs; running_total += trb_buff_len; @@ -3009,7 +3009,12 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, field); /* If there's data, queue data TRBs */ - field = 0; + /* Only set interrupt on short packet for IN endpoints */ + if (usb_urb_dir_in(urb)) + field = TRB_ISP | TRB_TYPE(TRB_DATA); + else + field = TRB_TYPE(TRB_DATA); + length_field = TRB_LEN(urb->transfer_buffer_length) | xhci_td_remainder(urb->transfer_buffer_length) | TRB_INTR_TARGET(0); @@ -3020,8 +3025,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, lower_32_bits(urb->transfer_dma), upper_32_bits(urb->transfer_dma), length_field, - /* Event on short tx */ - field | TRB_ISP | TRB_TYPE(TRB_DATA) | ep_ring->cycle_state); + field | ep_ring->cycle_state); } /* Save the DMA address of the last TRB in the TD */ @@ -3145,6 +3149,10 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags, field |= ep_ring->cycle_state; } + /* Only set interrupt on short packet for IN EPs */ + if (usb_urb_dir_in(urb)) + field |= TRB_ISP; + /* Chain all the TRBs together; clear the chain bit in * the last TRB to indicate it's the last TRB in the * chain. @@ -3172,12 +3180,7 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags, lower_32_bits(addr), upper_32_bits(addr), length_field, - /* We always want to know if the TRB was short, - * or we won't get an event when it completes. - * (Unless we use event data TRBs, which are a - * waste of space and HC resources.) - */ - field | TRB_ISP); + field); running_total += trb_buff_len; addr += trb_buff_len; |