[PATCH 3/6] phy: phy-sun4i-usb: Fix optional gpios failing probe
From: Kishon Vijay Abraham I
Date: Thu Jun 23 2016 - 02:02:36 EST
From: Quentin Schulz <quentin.schulz@xxxxxxxxxxxxxxxxxx>
The interrupt 0 is not a valid interrupt number. In the event where the
retrieval of the vbus-det gpio would return null, the gpiod_to_irq
callback would return 0, while the current code makes the assumption
that it is a valid interrupt, and would go on calling request_irq.
Obviously, this would fail, preventing the driver from probing properly,
while the vbus and id gpios are optional.
Signed-off-by: Quentin Schulz <quentin.schulz@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
---
drivers/phy/phy-sun4i-usb.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index bae54f7..45f01d6 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -645,11 +645,11 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
data->id_det_irq = gpiod_to_irq(data->id_det_gpio);
data->vbus_det_irq = gpiod_to_irq(data->vbus_det_gpio);
- if ((data->id_det_gpio && data->id_det_irq < 0) ||
- (data->vbus_det_gpio && data->vbus_det_irq < 0))
+ if ((data->id_det_gpio && data->id_det_irq <= 0) ||
+ (data->vbus_det_gpio && data->vbus_det_irq <= 0))
data->phy0_poll = true;
- if (data->id_det_irq >= 0) {
+ if (data->id_det_irq > 0) {
ret = devm_request_irq(dev, data->id_det_irq,
sun4i_usb_phy0_id_vbus_det_irq,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
@@ -660,7 +660,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
}
}
- if (data->vbus_det_irq >= 0) {
+ if (data->vbus_det_irq > 0) {
ret = devm_request_irq(dev, data->vbus_det_irq,
sun4i_usb_phy0_id_vbus_det_irq,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
--
1.7.9.5