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forcedeth: run loopback test only on chipsets that support it

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The driver incorrectly run loopback test on chips that don't support it.
Loopback test is only supported by chips that has DEV_HAS_TEST_EXTENDED
flag and returns 4 (NV_TEST_COUNT_EXTENDED) as test count.

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ivan Vecera 2013-12-04 18:06:51 +01:00 committed by David S. Miller
parent 89015c18ff
commit 86d9be263a
1 changed files with 5 additions and 3 deletions
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8
drivers/net/ethernet/nvidia/forcedeth.c
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@ -5150,8 +5150,10 @@ static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
int result;
memset(buffer, 0, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(u64));
int result, count;
count = nv_get_sset_count(dev, ETH_SS_TEST);
memset(buffer, 0, count * sizeof(u64));
if (!nv_link_test(dev)) {
test->flags |= ETH_TEST_FL_FAILED;
@ -5195,7 +5197,7 @@ static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64
return;
}
if (!nv_loopback_test(dev)) {
if (count > NV_TEST_COUNT_BASE && !nv_loopback_test(dev)) {
test->flags |= ETH_TEST_FL_FAILED;
buffer[3] = 1;
}