Re: [PATCH v3 2/3] usb: xhci: Add DbC support in xHCI driver

From: Felipe Balbi <felipe.balbi@linux.intel.com>
To: Mathias Nyman <mathias.nyman@linux.intel.com>,
	Lu Baolu <baolu.lu@linux.intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 2/3] usb: xhci: Add DbC support in xHCI driver
Date: Tue, 14 Nov 2017 09:28:49 +0200	[thread overview]
Message-ID: <87shdhb9ou.fsf@linux.intel.com> (raw)
In-Reply-To: <e3fbceea-c2f4-013c-119b-812a9e35a5c1@linux.intel.com>

Hi,

Mathias Nyman <mathias.nyman@linux.intel.com> writes:
>> +static int dbc_buf_alloc(struct dbc_buf *db, unsigned int size)
>> +{
>> +	db->buf_buf = kzalloc(size, GFP_KERNEL);
>> +	if (!db->buf_buf)
>> +		return -ENOMEM;
>> +
>> +	db->buf_size = size;
>> +	db->buf_put = db->buf_buf;
>> +	db->buf_get = db->buf_buf;
>> +
>> +	return 0;
>> +}

you may wanna have a look at kfifo.

-- 
balbi