linux-kernel - Re: staging: ks7010: Replace three printk() calls by pr

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Date:	Sat, 13 Aug 2016 13:10:08 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Joe Perches <joe@...ches.com>
Cc:	devel@...verdev.osuosl.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Wolfram Sang <wsa@...-dreams.de>,
	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>,
	Jean Delvare <jdelvare@...e.de>
Subject: Re: staging: ks7010: Replace three printk() calls by pr_err()

>> Prefer usage of the macro "pr_err" over the interface "printk".
> Not correct

A checkpatch warning like "PREFER_PR_LEVEL" can point additional possibilities out
for this use case.
Would you like to introduce any of the higher level logging functions instead?


>> diff --git a/drivers/staging/ks7010/ks7010_sdio.c b/drivers/staging/ks7010/ks7010_sdio.c
> []
>> @@ -998,11 +998,11 @@ static int ks7010_sdio_probe(struct sdio_func *func,
>>  	/* private memory allocate */
>>  	netdev = alloc_etherdev(sizeof(*priv));
>>  	if (netdev == NULL) {
>> -		printk(KERN_ERR "ks7010 : Unable to alloc new net device\n");
>> +		pr_err(pr_fmt("Unable to alloc new net device\n"));
> 
> All of these pr_fmt uses are redundant as pr_err already does pr_fmt

Thanks for your reminder.

Would you accept that another update will be appended to the discussed patch series?


> alloc_etherdev already does a dump_stack so the OOM isn't useful.

Does this information indicate that this printk() (or pr_err()) call
should be deleted?

Regards,
Markus