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staging:r8188eu: eleminate recovery attemp using skb_clone after netdev_alloc_skb fail

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It is wrong to create new skb using skb_clone instead netdev_alloc_skb,
because buffer data will be changed later.

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ivan Safonov 2017-01-04 17:22:17 +07:00 committed by Greg Kroah-Hartman
parent 80c96e08c4
commit 64cd405ac9
1 changed files with 3 additions and 16 deletions
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19
drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c
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@ -133,22 +133,9 @@ static int recvbuf2recvframe(struct adapter *adapt, struct sk_buff *pskb)
precvframe->rx_tail = pkt_copy->data;
precvframe->rx_data = pkt_copy->data;
} else {
if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) {
DBG_88E("recvbuf2recvframe: alloc_skb fail , drop frag frame\n");
rtw_free_recvframe(precvframe, pfree_recv_queue);
goto _exit_recvbuf2recvframe;
}
precvframe->pkt = skb_clone(pskb, GFP_ATOMIC);
if (precvframe->pkt) {
precvframe->rx_tail = pbuf + pattrib->drvinfo_sz + RXDESC_SIZE;
precvframe->rx_head = precvframe->rx_tail;
precvframe->rx_data = precvframe->rx_tail;
precvframe->rx_end = pbuf + pattrib->drvinfo_sz + RXDESC_SIZE + alloc_sz;
} else {
DBG_88E("recvbuf2recvframe: skb_clone fail\n");
rtw_free_recvframe(precvframe, pfree_recv_queue);
goto _exit_recvbuf2recvframe;
}
DBG_88E("recvbuf2recvframe: alloc_skb fail , drop frag frame\n");
rtw_free_recvframe(precvframe, pfree_recv_queue);
goto _exit_recvbuf2recvframe;
}
recvframe_put(precvframe, skb_len);