linux-kernel - Re: [PATCH] ata:Remove no longer valid FIXME comment in pata_ninja32.c for the function,ninja32_init

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Message-id: <3201438.osoPqSWP4R@amdc1032>
Date:	Thu, 05 Feb 2015 12:02:06 +0100
From:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To:	Nicholas Krause <xerofoify@...il.com>
Cc:	tj@...nel.org, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
Subject: Re: [PATCH] ata:Remove no longer valid FIXME comment in pata_ninja32.c
 for the function,ninja32_init_one


Hi,

On Wednesday, February 04, 2015 06:47:41 PM Nicholas Krause wrote:
> Removes the no longer valid fix me comment in the function, ninja32_init_one for
> questioning if we are required to remove the activated device at the end of this
> function by calling the function, ata_host_activate to activate the device passed
> by the caller of the function ninja_init_one. This comment is no longer needed as
> we need to deallocate the memory used to store this device's information when the
> device is no longer in use by the system in order to avoid leaking memory. Due to
> this the driver in the file,ninja32_init_one has the function,ata_pci_remove_one
> to release the memory allocated in it's init function and therefore this comment
> can now be removed due to use correctly freeing the memory allocated  from the
> driver's init function,ninja32_init_one.
> 
> Signed-off-by: Nicholas Krause <xerofoify@...il.com>
> ---
>  drivers/ata/pata_ninja32.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/ata/pata_ninja32.c b/drivers/ata/pata_ninja32.c
> index efb272d..47b30d3 100644
> --- a/drivers/ata/pata_ninja32.c
> +++ b/drivers/ata/pata_ninja32.c
> @@ -147,7 +147,6 @@ static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id)
>  	ap->pflags = ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
>  
>  	ninja32_program(base);
> -	/* FIXME: Should we disable them at remove ? */

After looking at the driver history I think that the comment is about
ninja32_program() enabling interrupt lines (which don't get disabled when
the host controller is detached from the driver) not about the cleanup
done during ata_pci_remove_one().  Alan, is this correct?

>  	return ata_host_activate(host, dev->irq, ata_bmdma_interrupt,
>  				 IRQF_SHARED, &ninja32_sht);
>  }

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

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