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dmaengine: ti: k3-udma-glue: clean up return in k3_udma_glue_rx_get_irq()

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Currently the k3_udma_glue_rx_get_irq() function returns either negative
error codes or zero on error.  Generally, in the kernel, zero means
success so this be confusing and has caused bugs in the past.  Also the
"tx" version of this function only returns negative error codes.  Let's
clean this "rx" function so both functions match.

This patch has no effect on runtime.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2024-06-06 17:23:44 +03:00 committed by David S. Miller
parent 924ee53175
commit 28f961f9d5
3 changed files with 6 additions and 5 deletions
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3
drivers/dma/ti/k3-udma-glue.c
View File

@ -1531,6 +1531,9 @@ int k3_udma_glue_rx_get_irq(struct k3_udma_glue_rx_channel *rx_chn,
flow->virq = k3_ringacc_get_ring_irq_num(flow->ringrx);
}
if (!flow->virq)
return -ENXIO;
return flow->virq;
}
EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_irq);

4
drivers/net/ethernet/ti/am65-cpsw-nuss.c
View File

@ -2424,10 +2424,10 @@ static int am65_cpsw_nuss_init_rx_chns(struct am65_cpsw_common *common)
rx_chn->irq = k3_udma_glue_rx_get_irq(rx_chn->rx_chn, i);
if (rx_chn->irq <= 0) {
if (rx_chn->irq < 0) {
dev_err(dev, "Failed to get rx dma irq %d\n",
rx_chn->irq);
ret = -ENXIO;
ret = rx_chn->irq;
goto err;
}
}

4
drivers/net/ethernet/ti/icssg/icssg_common.c
View File

@ -440,9 +440,7 @@ int prueth_init_rx_chns(struct prueth_emac *emac,
fdqring_id = k3_udma_glue_rx_flow_get_fdq_id(rx_chn->rx_chn,
i);
ret = k3_udma_glue_rx_get_irq(rx_chn->rx_chn, i);
if (ret <= 0) {
if (!ret)
ret = -ENXIO;
if (ret < 0) {
netdev_err(ndev, "Failed to get rx dma irq");
goto fail;
}