linux-kernel - [PATCH 4.15 097/168] gpio: thunderx: fix error return code in thunderx_gpio

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Date:   Wed, 11 Apr 2018 00:23:59 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Wei Yongjun <weiyongjun1@...wei.com>,
        David Daney <david.daney@...ium.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.15 097/168] gpio: thunderx: fix error return code in thunderx_gpio_probe()

4.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Wei Yongjun <weiyongjun1@...wei.com>


[ Upstream commit 76e28f5ffed82b1e81a86c4eb8d0420515765620 ]

Fix to return error code -ENOMEM from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 5a2a30024d8c ("gpio: Add gpio driver support for ThunderX and OCTEON-TX")
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
Acked-by: David Daney <david.daney@...ium.com>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpio/gpio-thunderx.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/gpio/gpio-thunderx.c
+++ b/drivers/gpio/gpio-thunderx.c
@@ -553,8 +553,10 @@ static int thunderx_gpio_probe(struct pc
 	txgpio->irqd = irq_domain_create_hierarchy(irq_get_irq_data(txgpio->msix_entries[0].vector)->domain,
 						   0, 0, of_node_to_fwnode(dev->of_node),
 						   &thunderx_gpio_irqd_ops, txgpio);
-	if (!txgpio->irqd)
+	if (!txgpio->irqd) {
+		err = -ENOMEM;
 		goto out;
+	}
 
 	/* Push on irq_data and the domain for each line. */
 	for (i = 0; i < ngpio; i++) {