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net: smsc95xx: Correct free_pkt() implementation

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On further review this returns the wrong packet length from the driver.
It may not be noticed since protocols will take care of it. Fix it by
subtracting the header length from the packet length returned.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2017-04-05 16:23:28 -06:00 committed by Tom Rini
parent dd9999d5f4
commit 20b429b013
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/eth/smsc95xx.c
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@ -998,7 +998,7 @@ int smsc95xx_eth_recv(struct udevice *dev, int flags, uchar **packetp)
}
*packetp = ptr + sizeof(packet_len);
return packet_len;
return packet_len - 4;
err:
usb_ether_advance_rxbuf(ueth, -1);
@ -1009,7 +1009,7 @@ static int smsc95xx_free_pkt(struct udevice *dev, uchar *packet, int packet_len)
{
struct smsc95xx_private *priv = dev_get_priv(dev);
packet_len = ALIGN(packet_len, 4);
packet_len = ALIGN(packet_len + sizeof(u32), 4);
usb_ether_advance_rxbuf(&priv->ueth, sizeof(u32) + packet_len);
return 0;