[PATCH 2/3] usb: typec: anx7411: fix error checking in anx7411_get_gpio_irq()

[Dan Carpenter <dan.carpenter@oracle.com>]

This is a minor bug which means that certain error messages are not
printed.

The devm_gpiod_get_optional() function can return either error pointers
or NULL.  It returns error pointers if there is an allocation failure,
or a similar issue.  It returns NULL if no GPIO was assigned to the
requested function.  Print an error in either case.

The gpiod_to_irq() function never returns zero.  It either returns
a positive IRQ number or a negative error code.

Fixes: fe6d8a9c8e64 ("usb: typec: anx7411: Add Analogix PD ANX7411 support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/usb/typec/anx7411.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/typec/anx7411.c b/drivers/usb/typec/anx7411.c
index 4f7a5cc968d0..311b56aaea9f 100644
--- a/drivers/usb/typec/anx7411.c
+++ b/drivers/usb/typec/anx7411.c
@@ -1326,13 +1326,13 @@ static void anx7411_get_gpio_irq(struct anx7411_data *ctx)
 	struct device *dev = &ctx->tcpc_client->dev;
 
 	ctx->intp_gpiod = devm_gpiod_get_optional(dev, "interrupt", GPIOD_IN);
-	if (!ctx->intp_gpiod) {
+	if (IS_ERR_OR_NULL(ctx->intp_gpiod)) {
 		dev_err(dev, "no interrupt gpio property\n");
 		return;
 	}
 
 	ctx->intp_irq = gpiod_to_irq(ctx->intp_gpiod);
-	if (!ctx->intp_irq)
+	if (ctx->intp_irq < 0)
 		dev_err(dev, "failed to get GPIO IRQ\n");
 }
 
-- 
2.35.1