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xhci: rename ep_ring variable in queue_bulk_tx(), no functional change

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Tiny change, a bit more readable.
The real reason for this change is that the coming td fragment work
had several over 80 lines character lines split just because of a few
extra characters in variable names.

no functional changes

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman 2016-06-21 10:57:57 +03:00 committed by Greg Kroah-Hartman
parent aa5e94a2e1
commit 5a5a0b1ae5
1 changed files with 10 additions and 11 deletions
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21
drivers/usb/host/xhci-ring.c
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@ -3120,7 +3120,7 @@ static u32 xhci_td_remainder(struct xhci_hcd *xhci, int transferred,
int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
struct urb *urb, int slot_id, unsigned int ep_index)
{
struct xhci_ring *ep_ring;
struct xhci_ring *ring;
struct urb_priv *urb_priv;
struct xhci_td *td;
struct xhci_generic_trb *start_trb;
@ -3129,14 +3129,13 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
bool zero_length_needed;
unsigned int num_trbs, last_trb_num, i;
unsigned int start_cycle, num_sgs = 0;
unsigned int running_total, block_len, trb_buff_len;
unsigned int full_len;
unsigned int running_total, block_len, trb_buff_len, full_len;
int ret;
u32 field, length_field, remainder;
u64 addr;
ep_ring = xhci_urb_to_transfer_ring(xhci, urb);
if (!ep_ring)
ring = xhci_urb_to_transfer_ring(xhci, urb);
if (!ring)
return -EINVAL;
/* If we have scatter/gather list, we use it. */
@ -3177,8 +3176,8 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
* until we've finished creating all the other TRBs. The ring's cycle
* state may change as we enqueue the other TRBs, so save it too.
*/
start_trb = &ep_ring->enqueue->generic;
start_cycle = ep_ring->cycle_state;
start_trb = &ring->enqueue->generic;
start_cycle = ring->cycle_state;
full_len = urb->transfer_buffer_length;
running_total = 0;
@ -3217,7 +3216,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
if (start_cycle == 0)
field |= TRB_CYCLE;
} else
field |= ep_ring->cycle_state;
field |= ring->cycle_state;
/* Chain all the TRBs together; clear the chain bit in the last
* TRB to indicate it's the last TRB in the chain.
@ -3227,10 +3226,10 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
} else {
field |= TRB_IOC;
if (i == last_trb_num)
td->last_trb = ep_ring->enqueue;
td->last_trb = ring->enqueue;
else if (zero_length_needed) {
trb_buff_len = 0;
urb_priv->td[1]->last_trb = ep_ring->enqueue;
urb_priv->td[1]->last_trb = ring->enqueue;
}
}
@ -3251,7 +3250,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
more_trbs_coming = true;
else
more_trbs_coming = false;
queue_trb(xhci, ep_ring, more_trbs_coming,
queue_trb(xhci, ring, more_trbs_coming,
lower_32_bits(addr),
upper_32_bits(addr),
length_field,