linux-kernel - Re: [PATCH] drivers: input: mouse: Remove useless casting in cypress

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Date:	Wed, 16 Oct 2013 15:48:24 -0300
From:	Geyslan Gregório Bem <geyslan@...il.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	dudl@...ress.com, kamal@...onical.com, mario_limonciello@...l.com,
	git@...tus.e4ward.com, linux-input@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	kernel-br <kernel-br@...glegroups.com>
Subject: Re: [PATCH] drivers: input: mouse: Remove useless casting in cypress_ps2.c

2013/10/16 Dmitry Torokhov <dmitry.torokhov@...il.com>:
> Hi Geyslan,
>
> On Wed, Oct 16, 2013 at 01:05:12PM -0300, Geyslan G. Bem wrote:
>> Casting (void *) value returned by kzalloc is useless
>> as mentioned in Documentation/CodingStyle, Chap 14.
>>
>> Signed-off-by: Geyslan G. Bem <geyslan@...il.com>
>> ---
>>  drivers/input/mouse/cypress_ps2.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/input/mouse/cypress_ps2.c b/drivers/input/mouse/cypress_ps2.c
>> index f51765f..ef651cc 100644
>> --- a/drivers/input/mouse/cypress_ps2.c
>> +++ b/drivers/input/mouse/cypress_ps2.c
>> @@ -679,7 +679,7 @@ int cypress_init(struct psmouse *psmouse)
>>  {
>>       struct cytp_data *cytp;
>>
>> -     cytp = (struct cytp_data *)kzalloc(sizeof(struct cytp_data), GFP_KERNEL);
>> +     cytp = kzalloc(sizeof(struct cytp_data), GFP_KERNEL);
>
> I already have a patch for this from Jingoo Han in my queue.

No problem.
>
>>       psmouse->private = (void *)cytp;
>
> But this cast is also not needed, so if you could send me a patch for it
> I'd appreciate that.

Sure, I can.
>
>>       if (cytp == NULL)
>>               return -ENOMEM;
>> --
>> 1.8.4
>>
>
> Thanks.
>
> --
> Dmitry
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