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authorSergei Shtylyov <sshtylyov@ru.mvista.com>2009-03-27 12:54:21 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2009-06-15 21:44:40 -0700
commit846099a61cf549f450178f1fb3e27adcbd9dcfc2 (patch)
treef6c59fab37b8e81124d6a62f66c3a4405f96db60
parent37e3ee991091e08d4902e3d2694c723446a89a8d (diff)
musb_host: refactor musb_save_toggle() (take 2)
Refactor musb_save_toggle() as follows: - replace 'struct musb_hw_ep *ep' parameter by 'struct musb_qh *qh' to avoid re-calculating this value - move usb_settogle() call out of the *if* operator. This is a net minor shrink of source and object code. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/usb/musb/musb_host.c35
1 files changed, 12 insertions, 23 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index db1b57415ec..bf194d24453 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -321,35 +321,24 @@ __acquires(musb->lock)
spin_lock(&musb->lock);
}
-/* for bulk/interrupt endpoints only */
-static inline void
-musb_save_toggle(struct musb_hw_ep *ep, int is_in, struct urb *urb)
+/* For bulk/interrupt endpoints only */
+static inline void musb_save_toggle(struct musb_qh *qh, int is_in,
+ struct urb *urb)
{
- struct usb_device *udev = urb->dev;
+ void __iomem *epio = qh->hw_ep->regs;
u16 csr;
- void __iomem *epio = ep->regs;
- struct musb_qh *qh;
- /* FIXME: the current Mentor DMA code seems to have
+ /*
+ * FIXME: the current Mentor DMA code seems to have
* problems getting toggle correct.
*/
- if (is_in || ep->is_shared_fifo)
- qh = ep->in_qh;
+ if (is_in)
+ csr = musb_readw(epio, MUSB_RXCSR) & MUSB_RXCSR_H_DATATOGGLE;
else
- qh = ep->out_qh;
+ csr = musb_readw(epio, MUSB_TXCSR) & MUSB_TXCSR_H_DATATOGGLE;
- if (!is_in) {
- csr = musb_readw(epio, MUSB_TXCSR);
- usb_settoggle(udev, qh->epnum, 1,
- (csr & MUSB_TXCSR_H_DATATOGGLE)
- ? 1 : 0);
- } else {
- csr = musb_readw(epio, MUSB_RXCSR);
- usb_settoggle(udev, qh->epnum, 0,
- (csr & MUSB_RXCSR_H_DATATOGGLE)
- ? 1 : 0);
- }
+ usb_settoggle(urb->dev, qh->epnum, !is_in, csr ? 1 : 0);
}
/* caller owns controller lock, irqs are blocked */
@@ -365,7 +354,7 @@ musb_giveback(struct musb_qh *qh, struct urb *urb, int status)
switch (qh->type) {
case USB_ENDPOINT_XFER_BULK:
case USB_ENDPOINT_XFER_INT:
- musb_save_toggle(ep, is_in, urb);
+ musb_save_toggle(qh, is_in, urb);
break;
case USB_ENDPOINT_XFER_ISOC:
if (status == 0 && urb->error_count)
@@ -1427,7 +1416,7 @@ static void musb_bulk_rx_nak_timeout(struct musb *musb, struct musb_hw_ep *ep)
urb->actual_length += dma->actual_len;
dma->actual_len = 0L;
}
- musb_save_toggle(ep, 1, urb);
+ musb_save_toggle(cur_qh, 1, urb);
/* move cur_qh to end of queue */
list_move_tail(&cur_qh->ring, &musb->in_bulk);