On Wed, Jun 13, 2012 at 12:20 PM, Ming Lei <[email protected]> wrote: > If usbnet is resumed by remote wakeup, generally there are > some packets comming to be handled, so allocate and submit > rx URBs in usbnet_resume to avoid delays introduced by tasklet. > Otherwise, usbnet may have been runtime suspended before the > usbnet_bh is executed to schedule Rx URBs. > > Without the patch, usbnet can't recieve any packets from peer > in runtime suspend state if runtime PM is enabled and > autosuspend_delay is set as zero. > > Cc: [email protected] > Signed-off-by: Ming Lei <[email protected]> > --- > drivers/net/usb/usbnet.c | 42 ++++++++++++++++++++++++++---------------- > 1 file changed, 26 insertions(+), 16 deletions(-) > > diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c > index 9bfa775..4911efa 100644 > --- a/drivers/net/usb/usbnet.c > +++ b/drivers/net/usb/usbnet.c > @@ -1201,6 +1201,21 @@ deferred: > } > EXPORT_SYMBOL_GPL(usbnet_start_xmit); > > +static void rx_alloc_submit(struct usbnet *dev, gfp_t flags) > +{ > + struct urb *urb; > + int i; > + > + /* don't refill the queue all at once */ > + for (i = 0; i < 10 && dev->rxq.qlen < RX_QLEN(dev); i++) { > + urb = usb_alloc_urb(0, GFP_ATOMIC);
David, sorry, the 'GFP_ATOMIC' above should be 'flags', so could you take the fixed version from attachment? Or could you do it by your self? Thanks, -- Ming Lei
0003-usbnet-handle-remote-wakeup-asap.patch
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