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authorMatt Evans <matt@ozlabs.org>2011-06-01 02:22:55 +0200
committerSarah Sharp <sarah.a.sharp@linux.intel.com>2011-06-03 01:37:47 +0200
commitf5960b698eb50a39fce1a066dc19a6a5a1148e16 (patch)
treed1f08656be5ffd40f4268d874801f91016508e3e /drivers/usb/host/xhci-mem.c
parentLinux 3.0-rc1 (diff)
downloadlinux-f5960b698eb50a39fce1a066dc19a6a5a1148e16.tar.xz
linux-f5960b698eb50a39fce1a066dc19a6a5a1148e16.zip
xhci: Remove some unnecessary casts and tidy some endian swap code
Some of the recently-added cpu_to_leXX and leXX_to_cpu made things somewhat messy; this patch neatens some of these areas, removing unnecessary casts in those parts also. In some places (where Y & Z are constants) a comparison of (leXX_to_cpu(X) & Y) == Z has been replaced with (X & cpu_to_leXX(Y)) == cpu_to_leXX(Z). The endian reversal of the constants should wash out at compile time. Signed-off-by: Matt Evans <matt@ozlabs.org> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Diffstat (limited to 'drivers/usb/host/xhci-mem.c')
-rw-r--r--drivers/usb/host/xhci-mem.c26
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 26caba4c1950..596d8fbb9e18 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -89,8 +89,8 @@ static void xhci_link_segments(struct xhci_hcd *xhci, struct xhci_segment *prev,
return;
prev->next = next;
if (link_trbs) {
- prev->trbs[TRBS_PER_SEGMENT-1].link.
- segment_ptr = cpu_to_le64(next->dma);
+ prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr =
+ cpu_to_le64(next->dma);
/* Set the last TRB in the segment to have a TRB type ID of Link TRB */
val = le32_to_cpu(prev->trbs[TRBS_PER_SEGMENT-1].link.control);
@@ -187,8 +187,8 @@ static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci,
if (link_trbs) {
/* See section 4.9.2.1 and 6.4.4.1 */
- prev->trbs[TRBS_PER_SEGMENT-1].link.
- control |= cpu_to_le32(LINK_TOGGLE);
+ prev->trbs[TRBS_PER_SEGMENT-1].link.control |=
+ cpu_to_le32(LINK_TOGGLE);
xhci_dbg(xhci, "Wrote link toggle flag to"
" segment %p (virtual), 0x%llx (DMA)\n",
prev, (unsigned long long)prev->dma);
@@ -549,8 +549,8 @@ struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci,
addr = cur_ring->first_seg->dma |
SCT_FOR_CTX(SCT_PRI_TR) |
cur_ring->cycle_state;
- stream_info->stream_ctx_array[cur_stream].
- stream_ring = cpu_to_le64(addr);
+ stream_info->stream_ctx_array[cur_stream].stream_ring =
+ cpu_to_le64(addr);
xhci_dbg(xhci, "Setting stream %d ring ptr to 0x%08llx\n",
cur_stream, (unsigned long long) addr);
@@ -786,7 +786,7 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,
xhci_dbg(xhci, "Set slot id %d dcbaa entry %p to 0x%llx\n",
slot_id,
&xhci->dcbaa->dev_context_ptrs[slot_id],
- (unsigned long long) le64_to_cpu(xhci->dcbaa->dev_context_ptrs[slot_id]));
+ le64_to_cpu(xhci->dcbaa->dev_context_ptrs[slot_id]));
return 1;
fail:
@@ -890,19 +890,19 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
ctrl_ctx->add_flags = cpu_to_le32(SLOT_FLAG | EP0_FLAG);
/* 3) Only the control endpoint is valid - one endpoint context */
- slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(1) | (u32) udev->route);
+ slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(1) | udev->route);
switch (udev->speed) {
case USB_SPEED_SUPER:
- slot_ctx->dev_info |= cpu_to_le32((u32) SLOT_SPEED_SS);
+ slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_SS);
break;
case USB_SPEED_HIGH:
- slot_ctx->dev_info |= cpu_to_le32((u32) SLOT_SPEED_HS);
+ slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_HS);
break;
case USB_SPEED_FULL:
- slot_ctx->dev_info |= cpu_to_le32((u32) SLOT_SPEED_FS);
+ slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_FS);
break;
case USB_SPEED_LOW:
- slot_ctx->dev_info |= cpu_to_le32((u32) SLOT_SPEED_LS);
+ slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_LS);
break;
case USB_SPEED_WIRELESS:
xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n");
@@ -916,7 +916,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
port_num = xhci_find_real_port_number(xhci, udev);
if (!port_num)
return -EINVAL;
- slot_ctx->dev_info2 |= cpu_to_le32((u32) ROOT_HUB_PORT(port_num));
+ slot_ctx->dev_info2 |= cpu_to_le32(ROOT_HUB_PORT(port_num));
/* Set the port number in the virtual_device to the faked port number */
for (top_dev = udev; top_dev->parent && top_dev->parent->parent;
top_dev = top_dev->parent)