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Subject: Re: [PATCH v3 2/3] usb: xhci: Add DbC support in xHCI driver
To: Felipe Balbi <felipe.balbi@linux.intel.com>,
        Mathias Nyman <mathias.nyman@linux.intel.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
References: <1504576740-11689-1-git-send-email-baolu.lu@linux.intel.com>
 <1504576740-11689-3-git-send-email-baolu.lu@linux.intel.com>
 <e3fbceea-c2f4-013c-119b-812a9e35a5c1@linux.intel.com>
 <87shdhb9ou.fsf@linux.intel.com>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
From: Lu Baolu <baolu.lu@linux.intel.com>
Message-ID: <5A0BEBEB.8030501@linux.intel.com>
Date: Wed, 15 Nov 2017 15:25:31 +0800
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Hi,

On 11/14/2017 03:28 PM, Felipe Balbi wrote:
> 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.
>

Yeah! kfifo gives me exactly what I want here.

I will replace it with kfifo. Thank you.

Best regards,
Lu Baolu