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can: mcp251xfd: mcp251xfd_start_xmit(): use mcp251xfd_get_tx_free() to check TX is is full 

This patch replaces an open coded check if the TX ring is full by a check if
mcp251xfd_get_tx_free() returns 0.

Link: https://lore.kernel.org/r/20210114153448.1506901-2-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Marc Kleine-Budde 2020-12-20 14:02:29 +01:00
parent cdc4c698e4
commit 9845b8f530
1 changed files with 1 additions and 1 deletions
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2
drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
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@ -2436,7 +2436,7 @@ static netdev_tx_t mcp251xfd_start_xmit(struct sk_buff *skb,
/* Stop queue if we occupy the complete TX FIFO */
tx_head = mcp251xfd_get_tx_head(tx_ring);
tx_ring->head++;
if (tx_ring->head - tx_ring->tail >= tx_ring->obj_num)
if (mcp251xfd_get_tx_free(tx_ring) == 0)
netif_stop_queue(ndev);
can_put_echo_skb(skb, ndev, tx_head, 0);