diff options
| author | Uday Raval <uraval@nvidia.com> | 2010-01-07 10:54:23 -0800 |
|---|---|---|
| committer | Uday Raval <uraval@nvidia.com> | 2010-01-07 11:20:37 -0800 |
| commit | e9924d3159a369643b489cb07a54da51b11c121c (patch) | |
| tree | d77797aeaaac0a440694ec515768e2a5ec809b11 /drivers | |
| parent | 58dd78dcfdcbe2db0ce27620c4c13c836e905289 (diff) | |
tegra: usbnet workaround for 32Byte buffer allignment requirement
Work-around for Tegra USB EHCI host controller limitation. Outgoing USB
network packets must be 32 byte alligned.
Bug 631234, 634022, 638227
Change-Id: Iba7be8305037e93df4d47d9b1f63a0907fafded1
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/usb/usbnet.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c index fa080e191ddf..056f6d91d226 100644 --- a/drivers/net/usb/usbnet.c +++ b/drivers/net/usb/usbnet.c @@ -930,6 +930,17 @@ static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net) struct driver_info *info = dev->driver_info; unsigned long flags; +#ifdef CONFIG_ARCH_TEGRA + // check and do the proper 32 byte alignment for sk buff + if ((int)skb->data & 0x0000001F) { + struct sk_buff *new_skb = skb_copy_expand(skb, 32, 0, GFP_ATOMIC); + if(unlikely(!(new_skb))) + return -1; + kfree_skb(skb); + skb = new_skb; + } +#endif + // some devices want funky USB-level framing, for // win32 driver (usually) and/or hardware quirks if (info->tx_fixup) { |