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

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Date:   Tue, 14 Nov 2017 09:28:49 +0200
From:   Felipe Balbi <felipe.balbi@...ux.intel.com>
To:     Mathias Nyman <mathias.nyman@...ux.intel.com>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/3] usb: xhci: Add DbC support in xHCI driver


Hi,

Mathias Nyman <mathias.nyman@...ux.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