linux-kernel - Re: [PATCH 2/2] ide-generic: handle probing of legacy io-ports

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Date:	Sun, 3 Aug 2008 16:54:57 +0200
From:	Borislav Petkov <petkovbb@...glemail.com>
To:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Cc:	alan@...hat.com, linux-kernel@...r.kernel.org,
	linux-ide@...r.kernel.org
Subject: Re: [PATCH 2/2] ide-generic: handle probing of legacy io-ports

On Sun, Aug 03, 2008 at 04:45:39PM +0200, Borislav Petkov wrote:
> On Sun, Aug 03, 2008 at 04:11:10PM +0200, Bartlomiej Zolnierkiewicz wrote:
> > 
> > On Sunday 03 August 2008, Borislav Petkov wrote:
> > > From: Borislav Petkov <petkovbb@...il.com>
> > > Date: Sun, 3 Aug 2008 09:28:53 +0200
> > > Subject: [PATCH 2/2] ide-generic: handle probing of legacy io-ports
> > > 
> > > Avoid probing the io-ports in case an IDE PCI controller is present and it uses
> > > the legacy iobases. If we still want to enforce the probing, we do
> > > 
> > > ide_generic.probe_mask=0x3f
> > > 
> > > on the kernel command line.
> > > 
> > > Signed-off-by: Borislav Petkov <petkovbb@...il.com>
> > 
> > Thanks for reworking the patch, looks much better now.
> > 
> > There are still some issues to address though.
> > 
> > > ---
> > >  drivers/ide/ide-generic.c |   23 ++++++++++++++++++-----
> > >  1 files changed, 18 insertions(+), 5 deletions(-)
> > > 
> > > diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c
> > > index 8fe8b5b..7d79616 100644
> > > --- a/drivers/ide/ide-generic.c
> > > +++ b/drivers/ide/ide-generic.c
> > > @@ -27,7 +27,7 @@
> > >  
> > >  #define DRV_NAME	"ide_generic"
> > >  
> > > -static int probe_mask = 0x03;
> > > +static int probe_mask = 0x00;
> > 
> > No need to initialize it now.
> 
> right, static.
> 
> > >  module_param(probe_mask, int, 0);
> > >  MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports");
> > >  
> > > @@ -105,18 +105,31 @@ static int __init ide_generic_init(void)
> > >  	hw_regs_t hw[MAX_HWIFS], *hws[MAX_HWIFS];
> > >  	struct ide_host *host;
> > >  	unsigned long io_addr;
> > > -	int i, rc;
> > > +	int i, rc, dummy, primary = 0, secondary = 0;
> > >  
> > >  #ifdef CONFIG_MIPS
> > >  	if (!ide_probe_legacy())
> > >  		return -ENODEV;
> > >  #endif
> > > -	printk(KERN_INFO DRV_NAME ": please use \"probe_mask=0x3f\" module "
> > > -			 "parameter for probing all legacy ISA IDE ports\n");
> > > +	ata_legacy_check_iobases(&primary, &secondary, &dummy);
> > > +
> > > +	if (primary) {
> > 
> > Shouldn't this also check for secondary?
> 
> you don't have to since primary is set to one in all cases.

crap, forget what i said here ^ :(.

-- 
Regards/Gruss,
    Boris.
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