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From: Pavel Machek <pavel@denx.de>
To: Sasha Levin <sashal@kernel.org>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
	Osama Muhammad <osmtendev@gmail.com>,
	Simon Horman <simon.horman@corigine.com>,
	"David S . Miller" <davem@davemloft.net>,
	krzysztof.kozlowski@linaro.org, netdev@vger.kernel.org
Subject: Re: [PATCH AUTOSEL 4.14 4/6] nfcsim.c: Fix error checking for debugfs_create_dir
Date: Fri, 16 Jun 2023 21:35:21 +0200	[thread overview]
Message-ID: <ZIy5ecuHQUP1wUu2@duo.ucw.cz> (raw)
In-Reply-To: <20230615114016.649846-4-sashal@kernel.org>

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Hi!

> [ Upstream commit 9b9e46aa07273ceb96866b2e812b46f1ee0b8d2f ]
> 
> This patch fixes the error checking in nfcsim.c.
> The DebugFS kernel API is developed in
> a way that the caller can safely ignore the errors that
> occur during the creation of DebugFS nodes.

I don't think this is good idea; user will wonder why he can't see
debugfs files, and pr_err() is quite suitable way to handle this.

Anyway, this does not really fix a bug, so we should not be putting it
into stable.

Best regards,
								Pavel

>  drivers/nfc/nfcsim.c | 4 ----
>  1 file changed, 4 deletions(-)
> 
> diff --git a/drivers/nfc/nfcsim.c b/drivers/nfc/nfcsim.c
> index 533e3aa6275cd..cf07b366500e9 100644
> --- a/drivers/nfc/nfcsim.c
> +++ b/drivers/nfc/nfcsim.c
> @@ -345,10 +345,6 @@ static struct dentry *nfcsim_debugfs_root;
>  static void nfcsim_debugfs_init(void)
>  {
>  	nfcsim_debugfs_root = debugfs_create_dir("nfcsim", NULL);
> -
> -	if (!nfcsim_debugfs_root)
> -		pr_err("Could not create debugfs entry\n");
> -
>  }
>  
>  static void nfcsim_debugfs_remove(void)

-- 
DENX Software Engineering GmbH,        Managing Director: Erika Unter
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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  reply	other threads:[~2023-06-16 19:35 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-15 11:40 [PATCH AUTOSEL 4.14 1/6] scsi: target: iscsi: Prevent login threads from racing between each other Sasha Levin
2023-06-15 11:40 ` [PATCH AUTOSEL 4.14 2/6] HID: wacom: Add error check to wacom_parse_and_register() Sasha Levin
2023-06-15 11:40 ` [PATCH AUTOSEL 4.14 3/6] arm64: Add missing Set/Way CMO encodings Sasha Levin
2023-06-16 19:34   ` Pavel Machek
2023-06-15 11:40 ` [PATCH AUTOSEL 4.14 4/6] nfcsim.c: Fix error checking for debugfs_create_dir Sasha Levin
2023-06-16 19:35   ` Pavel Machek [this message]
2023-06-15 11:40 ` [PATCH AUTOSEL 4.14 5/6] fbdev: imsttfb: Release framebuffer and dealloc cmap on error path Sasha Levin
2023-06-16 19:36   ` Pavel Machek
2023-06-15 11:40 ` [PATCH AUTOSEL 4.14 6/6] usb: gadget: udc: fix NULL dereference in remove() Sasha Levin

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