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| author |   Francois Romieu <romieu@fr.zoreil.com> | 2006-02-27 23:11:08 +0100 |
|---|---|---|
| committer | Francois Romieu <romieu@fr.zoreil.com> | 2006-02-27 23:11:08 +0100 |
| commit | b3c3e7d7d9795df16012d5c60e5f789e7fade311 (patch) | |
| tree | 7ad463d353263e765b302060da884a2eefb24173 /drivers/net/via-velocity.c | |
| parent | Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus (diff) | |
| download | linux-dev-b3c3e7d7d9795df16012d5c60e5f789e7fade311.tar.xz linux-dev-b3c3e7d7d9795df16012d5c60e5f789e7fade311.zip | |
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>
Diffstat (limited to 'drivers/net/via-velocity.c')
| -rw-r--r-- | drivers/net/via-velocity.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c index c2d5907dc8e0..ed1f837c8fda 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; |