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serial: 8250_bcm7271: Propagate error codes from brcmuart_probe()

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In case of failures brcmuart_probe() always returned -ENODEV, this
isn't correct for example platform_get_irq_byname() may return
-EPROBE_DEFER to handle such cases propagate error codes in
brcmuart_probe() in case of failures.

Fixes: 41a469482d ("serial: 8250: Add new 8250-core based Broadcom STB driver")
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20211224142917.6966-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lad Prabhakar 2021-12-24 14:29:09 +00:00 committed by Greg Kroah-Hartman
parent 56c8b1c10e
commit c195438f1e
1 changed files with 8 additions and 3 deletions
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11
drivers/tty/serial/8250/8250_bcm7271.c
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@ -1074,14 +1074,18 @@ static int brcmuart_probe(struct platform_device *pdev)
priv->rx_bufs = dma_alloc_coherent(dev,
priv->rx_size,
&priv->rx_addr, GFP_KERNEL);
if (!priv->rx_bufs)
if (!priv->rx_bufs) {
ret = -EINVAL;
goto err;
}
priv->tx_size = UART_XMIT_SIZE;
priv->tx_buf = dma_alloc_coherent(dev,
priv->tx_size,
&priv->tx_addr, GFP_KERNEL);
if (!priv->tx_buf)
if (!priv->tx_buf) {
ret = -EINVAL;
goto err;
}
}
ret = serial8250_register_8250_port(&up);
@ -1095,6 +1099,7 @@ static int brcmuart_probe(struct platform_device *pdev)
if (priv->dma_enabled) {
dma_irq = platform_get_irq_byname(pdev, "dma");
if (dma_irq < 0) {
ret = dma_irq;
dev_err(dev, "no IRQ resource info\n");
goto err1;
}
@ -1114,7 +1119,7 @@ err1:
err:
brcmuart_free_bufs(dev, priv);
brcmuart_arbitration(priv, 0);
return -ENODEV;
return ret;
}
static int brcmuart_remove(struct platform_device *pdev)