linux-kernel - Re: [PATCH] ibmvscsis: Initial commit of IBM VSCSI Tgt Driver

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Message-ID: <05554b20-46af-5298-e822-9d8bcba6b096@sandisk.com>
Date:	Tue, 24 May 2016 09:44:43 -0700
From:	Bart Van Assche <bart.vanassche@...disk.com>
To:	Greg KH <gregkh@...uxfoundation.org>
CC:	"Bryant G. Ly" <bryantly@...ux.vnet.ibm.com>,
	"JBottomley@...n.com" <JBottomley@...n.com>,
	"martin.petersen@...cle.com" <martin.petersen@...cle.com>,
	"tyreld@...ux.vnet.ibm.com" <tyreld@...ux.vnet.ibm.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"kvalo@...eaurora.org" <kvalo@...eaurora.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"mchehab@....samsung.com" <mchehab@....samsung.com>,
	"jslaby@...e.com" <jslaby@...e.com>,
	"joe@...ches.com" <joe@...ches.com>, "bp@...e.de" <bp@...e.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"target-devel@...r.kernel.org" <target-devel@...r.kernel.org>,
	bgly <bgly@...ibm.com>
Subject: Re: [PATCH] ibmvscsis: Initial commit of IBM VSCSI Tgt Driver

On 05/24/2016 09:34 AM, Greg KH wrote:
> On Tue, May 24, 2016 at 09:25:05AM -0700, Bart Van Assche wrote:
>>> +static inline long h_send_crq(struct ibmvscsis_adapter *adapter,
>>> +			u64 word1, u64 word2)
>>> +{
>>> +	long rc;
>>> +	struct vio_dev *vdev = adapter->dma_dev;
>>> +
>>> +	pr_debug("ibmvscsis: ibmvscsis_send_crq(0x%x, 0x%016llx, 0x%016llx)\n",
>>> +			vdev->unit_address, word1, word2);
>>> +
>>
>> As Joe Perches already asked, please define pr_fmt() instead of including
>> the kernel module name in every pr_debug() statement.
>
> Even better, as this is a driver, it should be using dev_*() calls
> instead of pr_*() calls to properly identify the device and driver that
> is making the message.  No driver should be using pr_*() except in
> _very_ limited usages.

Hi Greg,

The reason I recommended pr_debug() is because ibmvscsis is a LIO target 
driver and I don't think a struct device is associated with a LIO target 
driver. See e.g. target_register_template() in 
drivers/target/target_core_configfs.c.

Bart.