On Sun, Feb 15, 2009 at 3:04 PM, walter harms <wharms@xxxxxx> wrote:
> Hi Hannes,
> it is ok to replace a fixed boarder with ARRAY_SIZE()
> in this special case i would success the following additional cleanup
> (untestet !!)
>
>
> static int set_free_irq(struct net_device *dev)
> {
> int irqlist[] = {15,11,10,12,5,9,3,4}, i;
>
> for (i = 0; i < ARRAY_SIZE(irqlist); i++)
> if (request_irq (irqlist[i], NULL, 0, "bogus", NULL) != -EBUSY) {
> dev->irq = irqlist[i];
> return 0;
> }
> return -1;
> }
>
> ....
>
> if (dev->irq < 2) {
> if ( set_free_irq(dev) < 0) {
> printk(" unable to get IRQ %d.\n", dev->irq);
> retval = -EAGAIN;
> goto out;
> }
>
> for me this looks more readable.
>
> getting a free interrupt from a list mus be a common problem ? I am not in driver programming
> perhaps such a code is already in place somewhere ?
I am a great fan of refactoring but in that case I would just leave it
as is. If extracting a method I would extract a little more here.
Best,
Hannes
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