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authorSergei Shtylyov <sshtylyov@ru.mvista.com>2009-02-21 18:31:13 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2009-02-27 17:40:51 -0500
commit51d9f3e100a8f8cc2be89d5f13d37de61e2da38a (patch)
tree8d5f6386c23b22a6dfd420c3ed08e0f39f768cd0 /drivers/usb/musb
parentdc61d238b8c850c34632ae1fbbdea529f8c41d16 (diff)
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>
Diffstat (limited to 'drivers/usb/musb')
-rw-r--r--drivers/usb/musb/musb_host.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index c74ebadd4b9d..fc79e76b3845 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -335,16 +335,11 @@ musb_save_toggle(struct musb_hw_ep *ep, int is_in, struct urb *urb)
335static struct musb_qh * 335static struct musb_qh *
336musb_giveback(struct musb_qh *qh, struct urb *urb, int status) 336musb_giveback(struct musb_qh *qh, struct urb *urb, int status)
337{ 337{
338 int is_in;
339 struct musb_hw_ep *ep = qh->hw_ep; 338 struct musb_hw_ep *ep = qh->hw_ep;
340 struct musb *musb = ep->musb; 339 struct musb *musb = ep->musb;
340 int is_in = usb_pipein(urb->pipe);
341 int ready = qh->is_ready; 341 int ready = qh->is_ready;
342 342
343 if (ep->is_shared_fifo)
344 is_in = 1;
345 else
346 is_in = usb_pipein(urb->pipe);
347
348 /* save toggle eagerly, for paranoia */ 343 /* save toggle eagerly, for paranoia */
349 switch (qh->type) { 344 switch (qh->type) {
350 case USB_ENDPOINT_XFER_BULK: 345 case USB_ENDPOINT_XFER_BULK: