[PATCH] ppc: remove unused amiga_request_irq and mach_request_irq

[PATCH] ppc: remove unused amiga_request_irq and mach_request_irq

[Fernando Luis Vázquez Cao]

amiga_request_irq and mach_request_irq are never used, so delete them.

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
---

diff -urNp linux-2.6.23-rc3-orig/arch/ppc/amiga/config.c linux-2.6.23-rc3/arch/ppc/amiga/config.c
--- linux-2.6.23-rc3-orig/arch/ppc/amiga/config.c	2007-07-09 08:32:17.000000000 +0900
+++ linux-2.6.23-rc3/arch/ppc/amiga/config.c	2007-08-22 15:45:51.000000000 +0900
@@ -72,10 +72,6 @@ static void amiga_sched_init(irqreturn_t
 /* amiga specific irq functions */
 extern void amiga_init_IRQ (void);
 extern void (*amiga_default_handler[]) (int, void *, struct pt_regs *);
-extern int amiga_request_irq (unsigned int irq,
-			      void (*handler)(int, void *, struct pt_regs *),
-                              unsigned long flags, const char *devname,
-			      void *dev_id);
 extern void amiga_free_irq (unsigned int irq, void *dev_id);
 extern void amiga_enable_irq (unsigned int);
 extern void amiga_disable_irq (unsigned int);
@@ -382,7 +378,6 @@ void __init config_amiga(void)
   mach_init_IRQ        = amiga_init_IRQ;
 #ifndef CONFIG_APUS
   mach_default_handler = &amiga_default_handler;
-  mach_request_irq     = amiga_request_irq;
   mach_free_irq        = amiga_free_irq;
   enable_irq           = amiga_enable_irq;
   disable_irq          = amiga_disable_irq;

Re: [PATCH] ppc: remove unused amiga_request_irq and mach_request_irq

[Paul Mackerras]

Fernando Luis V=E1zquez Cao writes:

> amiga=5Frequest=5Firq and mach=5Frequest=5Firq are never used, so del=
ete them.

OK, but is there a particular reason you want to do this=3F

The whole of arch/ppc is going away eventually, so I don't think we
need to remove it piece by piece.

Paul.

Re: [PATCH] ppc: remove unused amiga_request_irq and mach_request_irq

[Linas Vepstas]

On Wed, Aug 22, 2007 at 07:44:41PM +1000, Paul Mackerras wrote:
> Fernando Luis Vázquez Cao writes:
> 
> > amiga_request_irq and mach_request_irq are never used, so delete them.
> 
> OK, but is there a particular reason you want to do this?
> 
> The whole of arch/ppc is going away eventually, so I don't think we
> need to remove it piece by piece.

Its often easier to port/move stuff if you clean it up first.

--linas

Re: [PATCH] ppc: remove unused amiga_request_irq and mach_request_irq

[Fernando Luis Vázquez Cao]

On Wed, 2007-08-22 at 13:28 -0500, Linas Vepstas wrote: 
> On Wed, Aug 22, 2007 at 07:44:41PM +1000, Paul Mackerras wrote:
> > Fernando Luis Vázquez Cao writes:
> > 
> > > amiga_request_irq and mach_request_irq are never used, so delete them.
> > 
> > OK, but is there a particular reason you want to do this?
> > 
> > The whole of arch/ppc is going away eventually, so I don't think we
> > need to remove it piece by piece.
> 
> Its often easier to port/move stuff if you clean it up first.
Agreed. It would make things easier for me too.

Fernando

Re: [PATCH] ppc: remove unused amiga_request_irq and mach_request_irq

[Fernando Luis Vázquez Cao]

On Wed, 2007-08-22 at 19:44 +1000, Paul Mackerras wrote: 
> Fernando Luis Vázquez Cao writes:
> 
> > amiga_request_irq and mach_request_irq are never used, so delete them.
> 
> OK, but is there a particular reason you want to do this?
Hi Paul,

Thank you for your reply.

I am currently auditing all the interrupt handlers and related code
(request_irq(), free_irq(), and others of that ilk) and, in the process,
I found some dead code. Getting rid of this cruft would just make my
life easier.

The final goal of this audit is to determine whether the Linux interrupt
handlers are kdump-ready. With the advent of kdump it is now possible
that device drivers have to handle pending interrupts generated in the
context of a previous kernel. Any pending interrupts will come in as
soon as the IRQ is allocated, but, unfortunately, not all the device
drivers handle this situation properly.

Besides, I am also trying to determine if applying this patch:
http://lkml.org/lkml/2007/7/19/687
is a sane thing to do.

> The whole of arch/ppc is going away eventually, so I don't think we
> need to remove it piece by piece.
As Linas mentioned in his reply, cleaning things up first will probably
make things easier for you too.

Please consider merging the four patches I sent to the PPC mailing list.

Fernando