diff options
| author |   Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-03-22 13:25:18 +0200 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-04-11 10:58:21 +0300 |
| commit | 387f869d2579e379ee343f5493dcd360be60f5c6 (patch) | |
| tree | 361898ea6398bf3f96a22866777e2f1bea206a13 /drivers/usb/gadget/function/u_ether.c | |
| parent | usb: gadget: u_ether: use better list accessors (diff) | |
| download | linux-dev-387f869d2579e379ee343f5493dcd360be60f5c6.tar.xz linux-dev-387f869d2579e379ee343f5493dcd360be60f5c6.zip | |
usb: gadget: u_ether: conditionally align transfer size
Unless HW sets quirk_ep_out_aligned_size, gadget driver shouldn't make
any efforts towards aligning transfers. If the UDC needs, it *must*
set the quirk flag.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/gadget/function/u_ether.c')
| -rw-r--r-- | drivers/usb/gadget/function/u_ether.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index cba6ff683f2c..a8b40d07e927 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -178,6 +178,7 @@ static void rx_complete(struct usb_ep *ep, struct usb_request *req); static int rx_submit(struct eth_dev *dev, struct usb_request *req, gfp_t gfp_flags) { + struct usb_gadget *g = dev->gadget; struct sk_buff *skb; int retval = -ENOMEM; size_t size = 0; @@ -209,8 +210,11 @@ rx_submit(struct eth_dev *dev, struct usb_request *req, gfp_t gfp_flags) */ size += sizeof(struct ethhdr) + dev->net->mtu + RX_EXTRA; size += dev->port_usb->header_len; - size += out->maxpacket - 1; - size -= size % out->maxpacket; + + if (g->quirk_ep_out_aligned_size) { + size += out->maxpacket - 1; + size -= size % out->maxpacket; + } if (dev->port_usb->is_fixed) size = max_t(size_t, size, dev->port_usb->fixed_out_len); |