On 11/06/07, Christian Stalp <christian.stalp@xxxxxx> wrote:
Hello again,
I have another problem with my driver. This time it is the request_irq-call.
I got this code, where there is a linked list:
LIST_HEAD(me1400_info_list);
then later this list is used to fill my structs inside the open-function:
struct list_head *ptr;
me1400_info_type *info = NULL;
for(ptr = me1400_info_list.next, i = 0; ptr != &me1400_info_list; ptr = ptr->next, i++)
{
info = list_entry(ptr, me1400_info_type, list);
if(i == minor) break;
}
with that this struct is used (casted to void) to initiade the request_irq-call:
err = request_irq(info->int_line,
me1400_isr,
SA_INTERRUPT | SA_SHIRQ,
ME1400_NAME,
(void *) info);
The problem now is, that I get this warning:
/home/chris/tmp/me1400-1.2.12/me1400.c: In function 'me1400_open':
/home/chris/tmp/me1400-1.2.12/me1400.c:672: warning: passing argument 2 of 'request_irq' from incompatible pointer type
This is request_irq :
int request_irq(unsigned int irq, irq_handler_t handler,
unsigned long irqflags, const char *devname, void *dev_id)
See that second argument? it needs a 'irq_handler_t' as its second argument.
You are passing it a 'me1400_info_type *' as the second argument.
So, just like the compiler tells you; you are "passing argument 2 of
'request_irq' from incompatible pointer type".
--
Jesper Juhl <jesper.juhl@xxxxxxxxx>
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