linux-kernel - [PATCH 5.10 101/243] ALSA: hda: Add IRQ check for platform_get

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Date:   Mon, 19 Jul 2021 16:52:10 +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, Jiajun Cao <jjcao20@...an.edu.cn>,
        Xin Tan <tanxin.ctf@...il.com>,
        Thierry Reding <treding@...dia.com>,
        Takashi Iwai <tiwai@...e.de>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 101/243] ALSA: hda: Add IRQ check for platform_get_irq()

From: Jiajun Cao <jjcao20@...an.edu.cn>

[ Upstream commit 8c13212443230d03ff25014514ec0d53498c0912 ]

The function hda_tegra_first_init() neglects to check the return
value after executing platform_get_irq().

hda_tegra_first_init() should check the return value (if negative
error number) for errors so as to not pass a negative value to
the devm_request_irq().

Fix it by adding a check for the return value irq_id.

Signed-off-by: Jiajun Cao <jjcao20@...an.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@...il.com>
Reviewed-by: Thierry Reding <treding@...dia.com>
Link: https://lore.kernel.org/r/20210622131947.94346-1-jjcao20@fudan.edu.cn
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/pci/hda/hda_tegra.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/pci/hda/hda_tegra.c b/sound/pci/hda/hda_tegra.c
index 361cf2041911..07787698b973 100644
--- a/sound/pci/hda/hda_tegra.c
+++ b/sound/pci/hda/hda_tegra.c
@@ -302,6 +302,9 @@ static int hda_tegra_first_init(struct azx *chip, struct platform_device *pdev)
 	const char *sname, *drv_name = "tegra-hda";
 	struct device_node *np = pdev->dev.of_node;
 
+	if (irq_id < 0)
+		return irq_id;
+
 	err = hda_tegra_init_chip(chip, pdev);
 	if (err)
 		return err;
-- 
2.30.2