On Wed, May 18, 2016 at 02:13:30AM +0200, Heinrich Schuchardt wrote:
> (!count || count < 4) is always true.
Even if count >= 4 ?
Guenter
> So let's remove the coding which is dead at least since 2005.
>
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@xxxxxx>
>
> ---
> drivers/net/usb/pegasus.c | 53 -----------------------------------------------
> 1 file changed, 53 deletions(-)
>
> diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c
> index 36cd7f0..1903d2e 100644
> --- a/drivers/net/usb/pegasus.c
> +++ b/drivers/net/usb/pegasus.c
> @@ -470,61 +470,8 @@ static void read_bulk_callback(struct urb *urb)
> return;
> default:
> netif_dbg(pegasus, rx_err, net, "RX status %d\n", status);
> - goto goon;
> }
>
> - if (!count || count < 4)
> - goto goon;
> -
> - rx_status = buf[count - 2];
> - if (rx_status & 0x1e) {
> - netif_dbg(pegasus, rx_err, net,
> - "RX packet error %x\n", rx_status);
> - pegasus->stats.rx_errors++;
> - if (rx_status & 0x06) /* long or runt */
> - pegasus->stats.rx_length_errors++;
> - if (rx_status & 0x08)
> - pegasus->stats.rx_crc_errors++;
> - if (rx_status & 0x10) /* extra bits */
> - pegasus->stats.rx_frame_errors++;
> - goto goon;
> - }
> - if (pegasus->chip == 0x8513) {
> - pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
> - pkt_len &= 0x0fff;
> - pegasus->rx_skb->data += 2;
> - } else {
> - pkt_len = buf[count - 3] << 8;
> - pkt_len += buf[count - 4];
> - pkt_len &= 0xfff;
> - pkt_len -= 4;
> - }
> -
> - /*
> - * If the packet is unreasonably long, quietly drop it rather than
> - * kernel panicing by calling skb_put.
> - */
> - if (pkt_len > PEGASUS_MTU)
> - goto goon;
> -
> - /*
> - * at this point we are sure pegasus->rx_skb != NULL
> - * so we go ahead and pass up the packet.
> - */
> - skb_put(pegasus->rx_skb, pkt_len);
> - pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
> - netif_rx(pegasus->rx_skb);
> - pegasus->stats.rx_packets++;
> - pegasus->stats.rx_bytes += pkt_len;
> -
> - if (pegasus->flags & PEGASUS_UNPLUG)
> - return;
> -
> - pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, PEGASUS_MTU,
> - GFP_ATOMIC);
> -
> - if (pegasus->rx_skb == NULL)
> - goto tl_sched;
> goon:
> usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
> usb_rcvbulkpipe(pegasus->usb, 1),
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