diff options
Diffstat (limited to 'drivers/usb/host/xhci-mem.c')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 47 |
1 files changed, 39 insertions, 8 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index bffcef7a5545..49f7d72f8b1b 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -198,6 +198,31 @@ fail: return 0; } +void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci, + struct xhci_virt_device *virt_dev, + unsigned int ep_index) +{ + int rings_cached; + + rings_cached = virt_dev->num_rings_cached; + if (rings_cached < XHCI_MAX_RINGS_CACHED) { + virt_dev->num_rings_cached++; + rings_cached = virt_dev->num_rings_cached; + virt_dev->ring_cache[rings_cached] = + virt_dev->eps[ep_index].ring; + xhci_dbg(xhci, "Cached old ring, " + "%d ring%s cached\n", + rings_cached, + (rings_cached > 1) ? "s" : ""); + } else { + xhci_ring_free(xhci, virt_dev->eps[ep_index].ring); + xhci_dbg(xhci, "Ring cache full (%d rings), " + "freeing ring\n", + virt_dev->num_rings_cached); + } + virt_dev->eps[ep_index].ring = NULL; +} + /* Zero an endpoint ring (except for link TRBs) and move the enqueue and dequeue * pointers to the beginning of the ring. */ @@ -242,6 +267,8 @@ struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, void xhci_free_container_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx) { + if (!ctx) + return; dma_pool_free(xhci->device_pool, ctx->bytes, ctx->dma); kfree(ctx); } @@ -427,7 +454,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud case USB_SPEED_LOW: slot_ctx->dev_info |= (u32) SLOT_SPEED_LS; break; - case USB_SPEED_VARIABLE: + case USB_SPEED_WIRELESS: xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n"); return -EINVAL; break; @@ -471,7 +498,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud case USB_SPEED_LOW: ep0_ctx->ep_info2 |= MAX_PACKET(8); break; - case USB_SPEED_VARIABLE: + case USB_SPEED_WIRELESS: xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n"); return -EINVAL; break; @@ -819,7 +846,8 @@ static void scratchpad_free(struct xhci_hcd *xhci) } struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci, - bool allocate_completion, gfp_t mem_flags) + bool allocate_in_ctx, bool allocate_completion, + gfp_t mem_flags) { struct xhci_command *command; @@ -827,11 +855,14 @@ struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci, if (!command) return NULL; - command->in_ctx = - xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_INPUT, mem_flags); - if (!command->in_ctx) { - kfree(command); - return NULL; + if (allocate_in_ctx) { + command->in_ctx = + xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_INPUT, + mem_flags); + if (!command->in_ctx) { + kfree(command); + return NULL; + } } if (allocate_completion) { |