On Wed, Mar 22, 2006 at 09:39:51AM -0800, kanishk rastogi wrote:
>
> hi all,
>
> i have created a device file with only write
> permission::
>
> ssize_t add_target_store(struct device *dev, const
> char *buf, size_t count)
> {
> int data;
> struct vt_host_info * vthost;
> vthost=to_vt_host_info(dev);
>
> if(1!=sscanf(buf,"%d",&data))-->it goes inside
> {
> printk(KERN_ERR "Invalid Data Entered count ::%u::
> %s",(unsigned int)count,buf);
> return -EINVAL;
> }
>
> printk("Device target will be added\n");
> return count;
> }
>
> DEVICE_ATTR(add_target, S_IWUSR , NULL,
> add_target_store);
>
> and created the file using ::
> if((i=device_register(dev)))
> return i;
> device_create_file(dev ,&dev_attr_add_target);
> but when i perform
> echo 2 >sysfs file
> it gives garbage
Gives garbage where?
Do you have your whole source code available anywhere?
thanks,
greg k-h
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