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From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
To: linux-serial@vger.kernel.org, Al Cooper <alcooperx@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jirislaby@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>,
	linux-kernel@vger.kernel.org,
	Prabhakar <prabhakar.csengg@gmail.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>,
	bcm-kernel-feedback-list@broadcom.com
Subject: [PATCH 03/10] serial: 8250_bcm7271: Propagate error codes from brcmuart_probe()
Date: Fri, 24 Dec 2021 14:29:09 +0000	[thread overview]
Message-ID: <20211224142917.6966-4-prabhakar.mahadev-lad.rj@bp.renesas.com> (raw)
In-Reply-To: <20211224142917.6966-1-prabhakar.mahadev-lad.rj@bp.renesas.com>

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: 41a469482de25 ("serial: 8250: Add new 8250-core based Broadcom STB driver")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 drivers/tty/serial/8250/8250_bcm7271.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_bcm7271.c b/drivers/tty/serial/8250/8250_bcm7271.c
index 7ecfcc650d28..cc60a7874e8b 100644
--- a/drivers/tty/serial/8250/8250_bcm7271.c
+++ b/drivers/tty/serial/8250/8250_bcm7271.c
@@ -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 @@ static int brcmuart_probe(struct platform_device *pdev)
 err:
 	brcmuart_free_bufs(dev, priv);
 	brcmuart_arbitration(priv, 0);
-	return -ENODEV;
+	return ret;
 }
 
 static int brcmuart_remove(struct platform_device *pdev)
-- 
2.17.1


  parent reply	other threads:[~2021-12-24 14:29 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-24 14:29 [PATCH 00/10] serial: Use platform_get_irq*() variants to fetch IRQ's Lad Prabhakar
2021-12-24 14:29 ` [PATCH 01/10] serial: altera: Use platform_get_irq_optional() to get the interrupt Lad Prabhakar
2021-12-24 14:29 ` [PATCH 02/10] serial: 8250_bcm7271: Use platform_get_irq() " Lad Prabhakar
2021-12-24 22:10   ` Florian Fainelli
2021-12-24 14:29 ` Lad Prabhakar [this message]
2021-12-24 22:11   ` [PATCH 03/10] serial: 8250_bcm7271: Propagate error codes from brcmuart_probe() Florian Fainelli
     [not found]   ` <CAHp75VdC+JifneoYRS3yoXoAhio+TXQzca3pku7ug=A_ewWrsg@mail.gmail.com>
2021-12-25 12:20     ` Lad, Prabhakar
2021-12-30 12:27       ` Greg Kroah-Hartman
2021-12-24 14:29 ` [PATCH 04/10] serial: meson: Use platform_get_irq() to get the interrupt Lad Prabhakar
2021-12-24 14:29   ` Lad Prabhakar
2021-12-24 14:29   ` Lad Prabhakar
2021-12-24 14:29 ` [PATCH 05/10] serial: pxa: " Lad Prabhakar
2021-12-24 14:29 ` [PATCH 06/10] serial: altera_jtaguart: Use platform_get_irq_optional() " Lad Prabhakar
2021-12-24 14:29 ` [PATCH 07/10] serial: vt8500: Use platform_get_irq() " Lad Prabhakar
2021-12-24 14:29   ` Lad Prabhakar
2021-12-24 14:29 ` [PATCH 08/10] serial: ar933x: " Lad Prabhakar
2021-12-24 14:29 ` [PATCH 09/10] serial: bcm63xx: " Lad Prabhakar
2021-12-24 14:29   ` Lad Prabhakar
2021-12-24 17:05   ` Florian Fainelli
2021-12-24 17:05     ` Florian Fainelli
2021-12-24 14:29 ` [PATCH 10/10] serial: pmac_zilog: " Lad Prabhakar
2021-12-24 14:29   ` Lad Prabhakar

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