linux-kernel - Re: [PATCH 1/2] sparc: Use kmalloc

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Message-ID: <248bd932-3f3f-3eb5-d313-ef6f6e71ab49@users.sourceforge.net>
Date:   Mon, 29 Aug 2016 12:36:24 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     sparclinux@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH 1/2] sparc: Use kmalloc_array() in three functions

>> @@ -69,7 +69,7 @@ static ssize_t led_proc_write(struct file *file, const char __user *buffer,
>>  	if (count > LED_MAX_LENGTH)
>>  		count = LED_MAX_LENGTH;
>>  
>> -	buf = kmalloc(sizeof(char) * (count + 1), GFP_KERNEL);
>> +	buf = kmalloc_array(count + 1, sizeof(*buf), GFP_KERNEL);
>>  	if (!buf)
>>  		return -ENOMEM;
>>  
> 
> Here it's probably best to just remove sizeof(char) completely,
> as it's 1 by definition.

Would you like to be prepared anyhow that the shown buffer variable
could eventually store other data than ordinary single byte characters?

Regards,
Markus