linux-kernel - [PATCH 5.13 303/351] firmware: tegra: Fix error return code in tegra210_bpmp

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Date:   Mon, 19 Jul 2021 16:54:09 +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, Hulk Robot <hulkci@...wei.com>,
        Zhen Lei <thunder.leizhen@...wei.com>,
        Thierry Reding <treding@...dia.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.13 303/351] firmware: tegra: Fix error return code in tegra210_bpmp_init()

From: Zhen Lei <thunder.leizhen@...wei.com>

[ Upstream commit 7fea67710e9f6a111a2c9440576f2396ccd92d57 ]

When call irq_get_irq_data() to get the IRQ's irq_data failed, an
appropriate error code -ENOENT should be returned. However, we directly
return 'err', which records the IRQ number instead of the error code.

Fixes: 139251fc2208 ("firmware: tegra: add bpmp driver for Tegra210")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
Signed-off-by: Thierry Reding <treding@...dia.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/firmware/tegra/bpmp-tegra210.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/tegra/bpmp-tegra210.c b/drivers/firmware/tegra/bpmp-tegra210.c
index ae15940a078e..c32754055c60 100644
--- a/drivers/firmware/tegra/bpmp-tegra210.c
+++ b/drivers/firmware/tegra/bpmp-tegra210.c
@@ -210,7 +210,7 @@ static int tegra210_bpmp_init(struct tegra_bpmp *bpmp)
 	priv->tx_irq_data = irq_get_irq_data(err);
 	if (!priv->tx_irq_data) {
 		dev_err(&pdev->dev, "failed to get IRQ data for TX IRQ\n");
-		return err;
+		return -ENOENT;
 	}
 
 	err = platform_get_irq_byname(pdev, "rx");
-- 
2.30.2