| From 7a753f20838384afb050fdcfb67ee09c54675ea3 Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Tue, 22 Jun 2021 21:19:42 +0800 |
| Subject: ALSA: hda: Add IRQ check for platform_get_irq() |
| |
| From: Jiajun Cao <jjcao20@fudan.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@fudan.edu.cn> |
| Signed-off-by: Xin Tan <tanxin.ctf@gmail.com> |
| Reviewed-by: Thierry Reding <treding@nvidia.com> |
| Link: https://lore.kernel.org/r/20210622131947.94346-1-jjcao20@fudan.edu.cn |
| Signed-off-by: Takashi Iwai <tiwai@suse.de> |
| Signed-off-by: Sasha Levin <sashal@kernel.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 e85fb04ec7be..b567c4bdae00 100644 |
| --- a/sound/pci/hda/hda_tegra.c |
| +++ b/sound/pci/hda/hda_tegra.c |
| @@ -363,6 +363,9 @@ static int hda_tegra_first_init(struct azx *chip, struct platform_device *pdev) |
| unsigned short gcap; |
| int irq_id = platform_get_irq(pdev, 0); |
| |
| + if (irq_id < 0) |
| + return irq_id; |
| + |
| err = hda_tegra_init_chip(chip, pdev); |
| if (err) |
| return err; |
| -- |
| 2.30.2 |
| |
