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musb_host: refactor musb_save_toggle() (take 2)

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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>
This commit is contained in:
Sergei Shtylyov 2009-03-27 12:54:21 -07:00 committed by Greg Kroah-Hartman
parent 37e3ee9910
commit 846099a61c
1 changed files with 12 additions and 23 deletions
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35
drivers/usb/musb/musb_host.c
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@ -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);