forked from luck/tmp_suning_uos_patched
via-velocity: fix memory corruption when changing the mtu
velocity_rx_refill() only replenishes the descriptor entries which belong to the CPU. It works great in the Rx path but the driver must ensure that all the descriptors are freed before velocity_rx_refill() is used in velocity_change_mtu(). The patch resets the Rx descriptors in velocity_free_rd_ring(). Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
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@ -1106,6 +1106,9 @@ static void velocity_free_rd_ring(struct velocity_info *vptr)
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for (i = 0; i < vptr->options.numrx; i++) {
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struct velocity_rd_info *rd_info = &(vptr->rd_info[i]);
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struct rx_desc *rd = vptr->rd_ring + i;
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memset(rd, 0, sizeof(*rd));
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if (!rd_info->skb)
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continue;
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