Re: [PATCH 05/10] net: ethernet: i825xx: Fix platform_get_irq's error checking

Sergei Shtylyov
2017-12-02T20:08:52Z

Hello.

On 12/02/2017 10:26 PM, Arvind Yadav wrote:

> The platform_get_irq() function returns negative if an error occurs.
> zero or positive number on success. platform_get_irq() error checking
> for zero is not correct.

The why you consider returning 0 a sign of failure?

> Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
> ---
> drivers/net/ethernet/i825xx/sni_82596.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/i825xx/sni_82596.c b/drivers/net/ethernet/i825xx/sni_82596.c
> index b2c04a7..a6d56f5 100644
> --- a/drivers/net/ethernet/i825xx/sni_82596.c
> +++ b/drivers/net/ethernet/i825xx/sni_82596.c
> @@ -120,9 +120,10 @@ static int sni_82596_probe(struct platform_device *dev)
> netdevice->dev_addr[5] = readb(eth_addr + 0x06);
> iounmap(eth_addr);
>
> - if (!netdevice->irq) {
> + if (netdevice->irq <= 0) {
> printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n",
> __FILE__, netdevice->base_addr);
> + retval = netdevice->irq ? netdevice->irq : -ENODEV;
> goto probe_failed;
> }
>

MBR, Sergei