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gianfar: Fix RXICr/TXICr programming for multi-queue mode 

The correct behavior is to program the interrupt coalescing regs
(RXICr/TXICr) in accordance with the Rx/Tx Q's "rx/txcoalescing"
flag. That is, if the coalescing flag is 0 for a given Rx/Tx queue
then the corresponding coalescing register should be cleared.
This behavior is correctly implemented for the single-queue mode
(SQ_SG_MODE), but not for the multi-queue mode (MQ_MG_MODE).
This fixes the later case.

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Claudiu Manoil 2012-06-28 04:40:53 +00:00 committed by David S. Miller
parent 7cecb523ad
commit 9740e00193
1 changed files with 4 additions and 6 deletions
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6
drivers/net/ethernet/freescale/gianfar.c
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@ -1804,21 +1804,19 @@ void gfar_configure_coalescing(struct gfar_private *priv,
if (priv->mode == MQ_MG_MODE) {
baddr = &regs->txic0;
for_each_set_bit(i, &tx_mask, priv->num_tx_queues) {
if (likely(priv->tx_queue[i]->txcoalescing)) {
gfar_write(baddr + i, 0);
if (likely(priv->tx_queue[i]->txcoalescing))
gfar_write(baddr + i, priv->tx_queue[i]->txic);
}
}
baddr = &regs->rxic0;
for_each_set_bit(i, &rx_mask, priv->num_rx_queues) {
if (likely(priv->rx_queue[i]->rxcoalescing)) {
gfar_write(baddr + i, 0);
if (likely(priv->rx_queue[i]->rxcoalescing))
gfar_write(baddr + i, priv->rx_queue[i]->rxic);
}
}
}
}
static int register_grp_irqs(struct gfar_priv_grp *grp)
{