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authorFrancois Romieu <romieu@fr.zoreil.com>2006-02-27 23:11:08 +0100
committerFrancois Romieu <romieu@fr.zoreil.com>2006-02-27 23:11:08 +0100
commitb3c3e7d7d9795df16012d5c60e5f789e7fade311 (patch)
tree7ad463d353263e765b302060da884a2eefb24173
parentde5f503cfbe4f942492269c6bd97a16a4d61e488 (diff)
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>
-rw-r--r--drivers/net/via-velocity.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c
index c2d5907dc8e..ed1f837c8fd 100644
--- a/drivers/net/via-velocity.c
+++ b/drivers/net/via-velocity.c
@@ -1106,6 +1106,9 @@ static void velocity_free_rd_ring(struct velocity_info *vptr)
for (i = 0; i < vptr->options.numrx; i++) {
struct velocity_rd_info *rd_info = &(vptr->rd_info[i]);
+ struct rx_desc *rd = vptr->rd_ring + i;
+
+ memset(rd, 0, sizeof(*rd));
if (!rd_info->skb)
continue;