diff options
| author | Andiry Xu <andiry.xu@amd.com> | 2012-03-05 10:49:39 +0100 |
|---|---|---|
| committer | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2012-03-13 17:30:34 +0100 |
| commit | 2fdcd47b6980f4e26a97811a17f5be7cb919ef90 (patch) | |
| tree | 24badc008b12560a7a1943d6c825e298dd6f8d0a /drivers | |
| parent | xHCI: dynamic ring expansion (diff) | |
| download | linux-2fdcd47b6980f4e26a97811a17f5be7cb919ef90.tar.xz linux-2fdcd47b6980f4e26a97811a17f5be7cb919ef90.zip | |
xHCI: Allocate 2 segments for transfer ring
Allocate 2 segments for transfer ring by default, so we can expand the ring
when the enqueue pointer and dequeue pointer are in different segments.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Tested-by: Paul Zimmerman <Paul.Zimmerman@synopsys.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index c37aa1ba9126..cae4c6f2845a 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -642,7 +642,7 @@ struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci, */ for (cur_stream = 1; cur_stream < num_streams; cur_stream++) { stream_info->stream_rings[cur_stream] = - xhci_ring_alloc(xhci, 1, 1, TYPE_STREAM, mem_flags); + xhci_ring_alloc(xhci, 2, 1, TYPE_STREAM, mem_flags); cur_ring = stream_info->stream_rings[cur_stream]; if (!cur_ring) goto cleanup_rings; @@ -976,7 +976,7 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, } /* Allocate endpoint 0 ring */ - dev->eps[0].ring = xhci_ring_alloc(xhci, 1, 1, TYPE_CTRL, flags); + dev->eps[0].ring = xhci_ring_alloc(xhci, 2, 1, TYPE_CTRL, flags); if (!dev->eps[0].ring) goto fail; @@ -1423,7 +1423,7 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, type = usb_endpoint_type(&ep->desc); /* Set up the endpoint ring */ virt_dev->eps[ep_index].new_ring = - xhci_ring_alloc(xhci, 1, 1, type, mem_flags); + xhci_ring_alloc(xhci, 2, 1, type, mem_flags); if (!virt_dev->eps[ep_index].new_ring) { /* Attempt to use the ring cache */ if (virt_dev->num_rings_cached == 0) |