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Bluetooth: hci_bcm: Check for error irq

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[ Upstream commit b38cd3b42f ]

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: 0395ffc1ee ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiasheng Jiang 2021-12-24 10:53:18 +08:00 committed by Greg Kroah-Hartman
parent 3983254b43
commit ede5593767
1 changed files with 6 additions and 1 deletions
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7
drivers/bluetooth/hci_bcm.c
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@ -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;