linux-kernel - Re: [PATCH AUTOSEL 4.19 167/177] debugfs: Fix !DEBUG_FS debugfs_create

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Message-ID: <20191211075224.GL398293@kroah.com>
Date:   Wed, 11 Dec 2019 08:52:24 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Kusanagi Kouichi <slash@...auone-net.jp>
Subject: Re: [PATCH AUTOSEL 4.19 167/177] debugfs: Fix !DEBUG_FS
 debugfs_create_automount

On Tue, Dec 10, 2019 at 04:32:11PM -0500, Sasha Levin wrote:
> From: Kusanagi Kouichi <slash@...auone-net.jp>
> 
> [ Upstream commit 4250b047039d324e0ff65267c8beb5bad5052a86 ]
> 
> If DEBUG_FS=n, compile fails with the following error:
> 
> kernel/trace/trace.c: In function 'tracing_init_dentry':
> kernel/trace/trace.c:8658:9: error: passing argument 3 of 'debugfs_create_automount' from incompatible pointer type [-Werror=incompatible-pointer-types]
>  8658 |         trace_automount, NULL);
>       |         ^~~~~~~~~~~~~~~
>       |         |
>       |         struct vfsmount * (*)(struct dentry *, void *)
> In file included from kernel/trace/trace.c:24:
> ./include/linux/debugfs.h:206:25: note: expected 'struct vfsmount * (*)(void *)' but argument is of type 'struct vfsmount * (*)(struct dentry *, void *)'
>   206 |      struct vfsmount *(*f)(void *),
>       |      ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
> 
> Signed-off-by: Kusanagi Kouichi <slash@...auone-net.jp>
> Link: https://lore.kernel.org/r/20191121102021787.MLMY.25002.ppp.dion.ne.jp@dmta0003.auone-net.jp
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
>  include/linux/debugfs.h | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)

Not needed here :)