[linux-dvb] idea on how to break the static dependencies on
xyzzy at speakeasy.org
Fri Apr 28 09:18:54 CEST 2006
On Thu, 27 Apr 2006, Johannes Stezenbach wrote:
> On Wed, Apr 26, 2006 at 04:57:41PM -0700, Trent Piepho wrote:
> > It would be a pain to impliment dvb_detach. It needs the xxxx_attach() symbol
> > as an argument, it's not possible to use a function pointer.
> How about using symbol_put_addr()?
That would make it a lot easier. You would just need to add an 'attach'
method to the dvb_frontend structure and pass that pointer to
symbol_put_addr(). I think you could get away with passing a pointer to any
function in the frontend module, it doesn't have to be the same one you got
with symbol_get() since the reference count is for the whole module, not
But.... There are no users of symbol_put_addr(), and there is a reason! Ever
since this patch:
Fix race between CONFIG_DEBUG_SLABALLOC and modules
Sun, 27 Jun 2004 17:55:19 +0000 (17:55 +0000)
using symbol_put_addr() will hang your kernel. So, probably best not to use
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