netdev - Re: [PATCH v2 4/4] staging: qlge: replace pr_err with netdev

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Message-ID: <20200629053004.GA6165@f3>
Date:   Mon, 29 Jun 2020 14:30:04 +0900
From:   Benjamin Poirier <benjamin.poirier@...il.com>
To:     Coiby Xu <coiby.xu@...il.com>
Cc:     devel@...verdev.osuosl.org, joe@...ches.com,
        dan.carpenter@...cle.com, gregkh@...uxfoundation.org,
        Manish Chopra <manishc@...vell.com>,
        "supporter:QLOGIC QLGE 10Gb ETHERNET DRIVER" 
        <GR-Linux-NIC-Dev@...vell.com>,
        "open list:QLOGIC QLGE 10Gb ETHERNET DRIVER" <netdev@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 4/4] staging: qlge: replace pr_err with netdev_err

On 2020-06-27 22:58 +0800, Coiby Xu wrote:
[...]
>  void ql_dump_qdev(struct ql_adapter *qdev)
>  {
> @@ -1611,99 +1618,100 @@ void ql_dump_qdev(struct ql_adapter *qdev)
>  #ifdef QL_CB_DUMP
>  void ql_dump_wqicb(struct wqicb *wqicb)
>  {
> -	pr_err("Dumping wqicb stuff...\n");
> -	pr_err("wqicb->len = 0x%x\n", le16_to_cpu(wqicb->len));
> -	pr_err("wqicb->flags = %x\n", le16_to_cpu(wqicb->flags));
> -	pr_err("wqicb->cq_id_rss = %d\n",
> -	       le16_to_cpu(wqicb->cq_id_rss));
> -	pr_err("wqicb->rid = 0x%x\n", le16_to_cpu(wqicb->rid));
> -	pr_err("wqicb->wq_addr = 0x%llx\n",
> -	       (unsigned long long)le64_to_cpu(wqicb->addr));
> -	pr_err("wqicb->wq_cnsmr_idx_addr = 0x%llx\n",
> -	       (unsigned long long)le64_to_cpu(wqicb->cnsmr_idx_addr));
> +	netdev_err(qdev->ndev, "Dumping wqicb stuff...\n");

drivers/staging/qlge/qlge_dbg.c:1621:13: error: ‘qdev’ undeclared (first use in this function); did you mean ‘cdev’?
 1621 |  netdev_err(qdev->ndev, "Dumping wqicb stuff...\n");
      |             ^~~~
      |             cdev

[...]
and many more like that

Anyways, qlge_dbg.h is a dumpster. It has hundreds of lines of code
bitrotting away in ifdef land. See this comment from David Miller on the
topic of ifdef'ed debugging code:
https://lore.kernel.org/netdev/20200303.145916.1506066510928020193.davem@davemloft.net/