[PATCH net-next v1 01/11] net: usb: lan78xx: Add error handling to lan78xx_setup_irq_domain

Oleksij Rempel
2024-12-09T13:08:01Z

Update `lan78xx_setup_irq_domain` to handle errors in
`lan78xx_read_reg`. Return the error code immediately if the read
operation fails, ensuring proper error propagation during IRQ domain
setup.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
drivers/net/usb/lan78xx.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index d5f6367d3714..070b21baffaf 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -2445,7 +2445,10 @@ static int lan78xx_setup_irq_domain(struct lan78xx_net *dev)

mutex_init(&dev->domain_data.irq_lock);

- lan78xx_read_reg(dev, INT_EP_CTL, &buf);
+ ret = lan78xx_read_reg(dev, INT_EP_CTL, &buf);
+ if (ret < 0)
+ return ret;
+
dev->domain_data.irqenable = buf;

dev->domain_data.irqchip = &lan78xx_irqchip;
--
2.39.5