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USB: musb: fix data toggle saving with shared FIFO 

For some strange reason the host side musb_giveback() decides
that it's always got an IN transfer when the hardware endpoint
is using a shared FIFO.  This causes musb_save_toggle() to read
the toggle state from the RXCSR register instead of TXCSR, and
may also cause unneeded reloading of RX endpoint registers.

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 2009-02-21 15:31:13 -08:00 committed by Greg Kroah-Hartman
parent dc61d238b8
commit 51d9f3e100
1 changed files with 1 additions and 6 deletions
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7
drivers/usb/musb/musb_host.c
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@ -335,16 +335,11 @@ musb_save_toggle(struct musb_hw_ep *ep, int is_in, struct urb *urb)
static struct musb_qh *
musb_giveback(struct musb_qh *qh, struct urb *urb, int status)
{
int is_in;
struct musb_hw_ep *ep = qh->hw_ep;
struct musb *musb = ep->musb;
int is_in = usb_pipein(urb->pipe);
int ready = qh->is_ready;
if (ep->is_shared_fifo)
is_in = 1;
else
is_in = usb_pipein(urb->pipe);
/* save toggle eagerly, for paranoia */
switch (qh->type) {
case USB_ENDPOINT_XFER_BULK: