From: Jiasheng Jiang jiasheng@iscas.ac.cn
[ Upstream commit b38cd3b42fba66cc538edb9cf77e07881f43f8e2 ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- 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 3e386f68faa02..1a298f13bcc87 100644 --- a/drivers/bluetooth/hci_bcm.c +++ b/drivers/bluetooth/hci_bcm.c @@ -1052,7 +1052,12 @@ 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;
if (has_acpi_companion(&pdev->dev)) { ret = bcm_acpi_probe(dev);