linux-kernel - [PATCH] spi: tegra20-sflash: Fix signedness bug in tegra_sflash

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Message-ID: <tencent_4D4974DE0CD4266C25819179B42888A3E20A@qq.com>
Date:   Sat, 15 Jul 2023 17:53:56 +0800
From:   Zhang Shurong <zhang_shurong@...mail.com>
To:     ldewangan@...dia.com
Cc:     broonie@...nel.org, thierry.reding@...il.com, jonathanh@...dia.com,
        p.zabel@...gutronix.de, linux-spi@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        Zhang Shurong <zhang_shurong@...mail.com>
Subject: [PATCH] spi: tegra20-sflash: Fix signedness bug in tegra_sflash_probe

The "tsd->irq" variable is unsigned so this error handling
code will not work.

Fix this by adding error handling statement

Fixes: 8528547bcc33 ("spi: tegra: add spi driver for sflash controller")
Signed-off-by: Zhang Shurong <zhang_shurong@...mail.com>
---
 drivers/spi/spi-tegra20-sflash.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-tegra20-sflash.c b/drivers/spi/spi-tegra20-sflash.c
index 4286310628a2..4c18337de813 100644
--- a/drivers/spi/spi-tegra20-sflash.c
+++ b/drivers/spi/spi-tegra20-sflash.c
@@ -455,7 +455,11 @@ static int tegra_sflash_probe(struct platform_device *pdev)
 		goto exit_free_master;
 	}
 
-	tsd->irq = platform_get_irq(pdev, 0);
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
+		goto exit_free_master;
+
+	tsd->irq = ret;
 	ret = request_irq(tsd->irq, tegra_sflash_isr, 0,
 			dev_name(&pdev->dev), tsd);
 	if (ret < 0) {
-- 
2.30.2