From b38cd3b42fba66cc538edb9cf77e07881f43f8e2 Mon Sep 17 00:00:00 2001
From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Date: Fri, 24 Dec 2021 10:53:18 +0800
Subject: [PATCH] Bluetooth: hci_bcm: Check for error irq
Git-commit: b38cd3b42fba66cc538edb9cf77e07881f43f8e2
Patch-mainline: v5.17-rc1
References: git-fixes
For the possible failure of the platform_get_irq(), the returned irq
could be error number and will finally cause the failure of the
request_irq().
Consider that platform_get_irq() can now in certain cases return
-EPROBE_DEFER, and the consequences of letting request_irq() effectively
convert that into -EINVAL, even at probe time rather than later on.
So it might be better to check just now.
Fixes: 0395ffc1ee05 ("Bluetooth: hci_bcm: Add PM for BCM devices")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/bluetooth/hci_bcm.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index 7852abf15ddf..d634a27bc850 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -1188,7 +1188,12 @@ static int bcm_probe(struct platform_device *pdev)
return -ENOMEM;
dev->dev = &pdev->dev;
- dev->irq = platform_get_irq(pdev, 0);
+
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0)
+ return ret;
+
+ dev->irq = ret;
/* Initialize routing field to an unused value */
dev->pcm_int_params[0] = 0xff;
--
2.31.1