linux-kernel - Re: [PATCH 001/115] gpu: ion: Add ION Memory Manager

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Message-ID: <CAMbhsRRrE7m_aQRS-BB-4Jr8m0WaSADjek=tPfTu2uMoZTaXxA@mail.gmail.com>
Date:	Sat, 14 Dec 2013 13:10:38 -0800
From:	Colin Cross <ccross@...roid.com>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	John Stultz <john.stultz@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Android Kernel Team <kernel-team@...roid.com>,
	Sumit Semwal <sumit.semwal@...aro.org>,
	Jesse Barker <jesse.barker@....com>,
	Rebecca Schultz Zavin <rebecca@...roid.com>
Subject: Re: [PATCH 001/115] gpu: ion: Add ION Memory Manager

On Sat, Dec 14, 2013 at 8:52 AM, Greg KH <gregkh@...uxfoundation.org> wrote:
> On Fri, Dec 13, 2013 at 02:23:35PM -0800, John Stultz wrote:
>> +     idev->debug_root = debugfs_create_dir("ion", NULL);
>> +     if (IS_ERR_OR_NULL(idev->debug_root))
>> +             pr_err("ion: failed to create debug files.\n");
>
> There's no need to check for this at all, you just printed out an error
> message if CONFIG_DEBUGFS is not enabled, which isn't all that nice.
>
> Something to clean up later, no big deal now.

Patch 75/115 (ion: remove IS_ERR_OR_NULL) replaces this chunk with:
        idev->debug_root = debugfs_create_dir("ion", NULL);
        if (!idev->debug_root)
                pr_err("ion: failed to create debug files.\n");
which won't print an error if debugfs is disabled.
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