On Jan 30, 2008 6:00 AM, Jiri Slaby <[EMAIL PROTECTED]> wrote:
> On 01/30/2008 11:36 AM, Bryan Wu wrote:
> > +DEFINE_MUTEX(bfin_otp_lock);
>
> static?
the macro threw me ... fixed now, thanks
> > +static int __init bfin_otp_init(void)
> > +{
> > + int ret;
> > +
> > + stampit();
> > +
> > + ret = alloc_chrdev_region(&bfin_otp_dev_node, 0, 1, "otp");
> > + if (ret) {
> > + printk(KERN_ERR PFX "unable to get a char device\n");
> > + return ret;
> > + }
> > +
> > + cdev_init(&bfin_otp_cdev, &bfin_otp_fops);
> > + bfin_otp_cdev.owner = THIS_MODULE;
> > + bfin_otp_cdev.ops = &bfin_otp_fops;
>
> You don't need to set the fops again.
i did research this a bit but the information on the topic seemed
spotty and usage was inconsistent ... i guess recent things have
smartened up, so i'll drop the assignment
> > + ret = cdev_add(&bfin_otp_cdev, bfin_otp_dev_node, 1);
> > + if (ret) {
> > + unregister_chrdev_region(bfin_otp_dev_node, 1);
> > + printk(KERN_ERR PFX "unable to register char device\n");
> > + return ret;
> > + }
> > +
> > + bfin_otp_class = class_create(THIS_MODULE, "otp");
> > + device_create(bfin_otp_class, NULL, bfin_otp_dev_node, "otp");
>
> Anyway, wouldn't be easier/better to use misc.c functionality here
> (misc_register() et al.)?
probably ... i just didnt want to statically allocate a number in the
range that would be Blackfin specific ...
-mike
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