2024-06-06 19:32:28

by Aaro Koskinen

[permalink] [raw]
Subject: Re: [PATCH v1 1/1] ARM: omap2: Switch to use kmemdup_array()

Hi,

On Thu, Jun 06, 2024 at 07:51:04PM +0300, Andy Shevchenko wrote:
> Let the kememdup_array() take care about multiplication and possible

^^^^^
Typo.

> overflows.
>
> Signed-off-by: Andy Shevchenko <[email protected]>
> ---
> arch/arm/mach-omap2/omap_device.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c
> index fca7869c8075..800980057373 100644
> --- a/arch/arm/mach-omap2/omap_device.c
> +++ b/arch/arm/mach-omap2/omap_device.c
> @@ -315,7 +315,7 @@ static struct omap_device *omap_device_alloc(struct platform_device *pdev,
>
> od->hwmods_cnt = oh_cnt;
>
> - hwmods = kmemdup(ohs, sizeof(struct omap_hwmod *) * oh_cnt, GFP_KERNEL);
> + hwmods = kmemdup_array(ohs, oh_cnt, sizeof(*hwmods), GFP_KERNEL);

Maybe same result, but I guess the 3rd parameter should be count?

A.


2024-06-06 19:43:22

by Andy Shevchenko

[permalink] [raw]
Subject: Re: [PATCH v1 1/1] ARM: omap2: Switch to use kmemdup_array()

On Thu, Jun 06, 2024 at 10:32:02PM +0300, Aaro Koskinen wrote:
> On Thu, Jun 06, 2024 at 07:51:04PM +0300, Andy Shevchenko wrote:
> > Let the kememdup_array() take care about multiplication and possible
>
> ^^^^^
> Typo.

Aha, thanks!

> > overflows.

...

> > - hwmods = kmemdup(ohs, sizeof(struct omap_hwmod *) * oh_cnt, GFP_KERNEL);
> > + hwmods = kmemdup_array(ohs, oh_cnt, sizeof(*hwmods), GFP_KERNEL);
>
> Maybe same result, but I guess the 3rd parameter should be count?

Actually it is going to be changed to follow kcalloc().
https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git/commit/?id=0ee14725471c

--
With Best Regards,
Andy Shevchenko



2024-06-06 19:47:21

by Aaro Koskinen

[permalink] [raw]
Subject: Re: [PATCH v1 1/1] ARM: omap2: Switch to use kmemdup_array()

On Thu, Jun 06, 2024 at 10:43:07PM +0300, Andy Shevchenko wrote:
> On Thu, Jun 06, 2024 at 10:32:02PM +0300, Aaro Koskinen wrote:
> > On Thu, Jun 06, 2024 at 07:51:04PM +0300, Andy Shevchenko wrote:
> > > Let the kememdup_array() take care about multiplication and possible
> >
> > ^^^^^
> > Typo.
>
> Aha, thanks!
>
> > > overflows.
>
> ...
>
> > > - hwmods = kmemdup(ohs, sizeof(struct omap_hwmod *) * oh_cnt, GFP_KERNEL);
> > > + hwmods = kmemdup_array(ohs, oh_cnt, sizeof(*hwmods), GFP_KERNEL);
> >
> > Maybe same result, but I guess the 3rd parameter should be count?
>
> Actually it is going to be changed to follow kcalloc().
> https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git/commit/?id=0ee14725471c

OK, good, you can add:

Reviewed-by: Aaro Koskinen <[email protected]>

A.