4.15-stable review patch. If anyone has any objections, please let me know.
------------------ From: Stefan Wahren <[email protected]> commit ab2f336cb7e629de74d8af06bcaf6b15e4230e19 upstream. According to the devicetree binding the shutdown and device wake GPIOs are optional. Since commit 3e81a4ca51a1 ("Bluetooth: hci_bcm: Mandate presence of shutdown and device wake GPIO") this driver won't probe anymore on Raspberry Pi 3 and Zero W (no device wake GPIO connected). So fix this regression by reverting this commit partially. Fixes: 3e81a4ca51a1 ("Bluetooth: hci_bcm: Mandate presence of shutdown and device wake GPIO") Signed-off-by: Stefan Wahren <[email protected]> Reviewed-by: Lukas Wunner <[email protected]> Signed-off-by: Marcel Holtmann <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/bluetooth/hci_bcm.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- a/drivers/bluetooth/hci_bcm.c +++ b/drivers/bluetooth/hci_bcm.c @@ -775,12 +775,13 @@ static int bcm_get_resources(struct bcm_ dev->clk = devm_clk_get(dev->dev, NULL); - dev->device_wakeup = devm_gpiod_get(dev->dev, "device-wakeup", - GPIOD_OUT_LOW); + dev->device_wakeup = devm_gpiod_get_optional(dev->dev, "device-wakeup", + GPIOD_OUT_LOW); if (IS_ERR(dev->device_wakeup)) return PTR_ERR(dev->device_wakeup); - dev->shutdown = devm_gpiod_get(dev->dev, "shutdown", GPIOD_OUT_LOW); + dev->shutdown = devm_gpiod_get_optional(dev->dev, "shutdown", + GPIOD_OUT_LOW); if (IS_ERR(dev->shutdown)) return PTR_ERR(dev->shutdown);
