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net: ethernet: ti: cpsw_ethtool: fix ethtool ring param set

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[ Upstream commit 09faf5a7d7 ]

Fix ability to set RX descriptor number, the reason - initially
"tx_max_pending" was set incorrectly, but the issue appears after
adding sanity check, so fix is for "sanity" patch.

Fixes: 37e2d99b59 ("ethtool: Ensure new ring parameters are within bounds during SRINGPARAM")
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ivan Khoronzhuk
2019-05-31 16:47:25 +03:00
committed by Greg Kroah-Hartman
parent 893e2a5f5c
commit 831d6d0778
1 changed files with 1 additions and 1 deletions
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drivers/net/ethernet/ti/cpsw.c
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@@ -2978,7 +2978,7 @@ static void cpsw_get_ringparam(struct net_device *ndev,
struct cpsw_common *cpsw = priv->cpsw;
/* not supported */
ering->tx_max_pending = 0;
ering->tx_max_pending = descs_pool_size - CPSW_MAX_QUEUES;
ering->tx_pending = cpdma_get_num_tx_descs(cpsw->dma);
ering->rx_max_pending = descs_pool_size - CPSW_MAX_QUEUES;
ering->rx_pending = cpdma_get_num_rx_descs(cpsw->dma);