linux-kernel - Re: [PATCH] firewire: make fw_bus

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Date: Wed, 20 Dec 2023 09:48:17 +0900
From: Takashi Sakamoto <o-takashi@...amocchi.jp>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org, linux1394-devel@...ts.sourceforge.net
Subject: Re: [PATCH] firewire: make fw_bus_type const

Hi Greg,

On Tue, Dec 19, 2023 at 03:59:32PM +0100, Greg Kroah-Hartman wrote:
> Now that the driver core can properly handle constant struct bus_type,
> move the fw_bus_type variable to be a constant structure as well,
> placing it into read-only memory which can not be modified at runtime.
> 
> Cc: Takashi Sakamoto <o-takashi@...amocchi.jp>
> Cc: linux1394-devel@...ts.sourceforge.net
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
>  drivers/firewire/core-device.c | 2 +-
>  include/linux/firewire.h       | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)

Thanks for the patch. I applied it to for-next[1], since the following
commits at v6.4 kernel have already allowed to keep it as constant (your
absolute work!).

* commit ad8685d0f61a ("driver core: bus: constify bus_unregister()")
* commit 00c4a3c47da7 ("driver core: bus: constantify bus_register()")
* commit d492cc2573a0 ("driver core: device.h: make struct bus_type a const *")

[1] https://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394.git/log/?h=for-next


Thanks

Takashi Sakamoto