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>
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index d9660eb..743cf80 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1333,8 +1333,8 @@
/* If the HC already knows the endpoint is disabled,
* or the HCD has noted it is disabled, ignore this request
*/
- if ((le32_to_cpu(ep_ctx->ep_info) & EP_STATE_MASK) ==
- EP_STATE_DISABLED ||
+ if (((ep_ctx->ep_info & cpu_to_le32(EP_STATE_MASK)) ==
+ cpu_to_le32(EP_STATE_DISABLED)) ||
le32_to_cpu(ctrl_ctx->drop_flags) &
xhci_get_endpoint_flag(&ep->desc)) {
xhci_warn(xhci, "xHCI %s called with disabled ep %p\n",
@@ -1725,8 +1725,7 @@
/* Enqueue pointer can be left pointing to the link TRB,
* we must handle that
*/
- if ((le32_to_cpu(command->command_trb->link.control)
- & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK))
+ if (TRB_TYPE_LINK_LE32(command->command_trb->link.control))
command->command_trb =
xhci->cmd_ring->enq_seg->next->trbs;
@@ -2519,8 +2518,7 @@
/* Enqueue pointer can be left pointing to the link TRB,
* we must handle that
*/
- if ((le32_to_cpu(reset_device_cmd->command_trb->link.control)
- & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK))
+ if (TRB_TYPE_LINK_LE32(reset_device_cmd->command_trb->link.control))
reset_device_cmd->command_trb =
xhci->cmd_ring->enq_seg->next->trbs;