| Message ID | 20241203072154.2440034-10-o.rempel@pengutronix.de (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | lan78xx: Preparations for PHYlink | expand |
On Tue, Dec 03, 2024 at 08:21:42AM +0100, Oleksij Rempel wrote: > Update `lan78xx_irq_bus_sync_unlock` to handle errors in register > read/write operations. If an error occurs, log it and exit the function > appropriately. This ensures proper handling of failures during IRQ > synchronization. > > Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Andrew
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 2d16c1fc850e..2ae9565b5044 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -2382,13 +2382,22 @@ static void lan78xx_irq_bus_sync_unlock(struct irq_data *irqd) struct lan78xx_net *dev = container_of(data, struct lan78xx_net, domain_data); u32 buf; + int ret; /* call register access here because irq_bus_lock & irq_bus_sync_unlock * are only two callbacks executed in non-atomic contex. */ - lan78xx_read_reg(dev, INT_EP_CTL, &buf); + ret = lan78xx_read_reg(dev, INT_EP_CTL, &buf); + if (ret < 0) + goto irq_bus_sync_unlock; + if (buf != data->irqenable) - lan78xx_write_reg(dev, INT_EP_CTL, data->irqenable); + ret = lan78xx_write_reg(dev, INT_EP_CTL, data->irqenable); + +irq_bus_sync_unlock: + if (ret < 0) + netdev_err(dev->net, "Failed to sync IRQ enable register: %pe\n", + ERR_PTR(ret)); mutex_unlock(&data->irq_lock); }
Update `lan78xx_irq_bus_sync_unlock` to handle errors in register read/write operations. If an error occurs, log it and exit the function appropriately. This ensures proper handling of failures during IRQ synchronization. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> --- drivers/net/usb/lan78xx.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)