From: Johan Hovold <johan@kernel.org>
To: Alex Elder <elder@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: greybus-dev@lists.linaro.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] greybus: es2: drop redundant device reference
Date: Mon, 30 Mar 2026 13:50:10 +0200 [thread overview]
Message-ID: <acpjcgEh3SL6y7pA@hovoldconsulting.com> (raw)
In-Reply-To: <20260311082226.14865-1-johan@kernel.org>
On Wed, Mar 11, 2026 at 09:22:26AM +0100, Johan Hovold wrote:
> Driver core holds a reference to the USB interface and its parent USB
> device while the interface is bound to a driver and there is no need to
> take additional references unless the structures are needed after
> disconnect.
>
> Drop the redundant device reference to reduce cargo culting, make it
> easier to spot drivers where an extra reference is needed, and reduce
> the risk of memory leaks when drivers fail to release it.
>
> Signed-off-by: Johan Hovold <johan@kernel.org>
> ---
>
> This one needs one more spin... Sorry about the mess up.
> Changes in v3:
> - drop the leftover usb_dev_put() in early error paths
>
> Changes in v2:
> - drop temporary udev variable as reported by the kernel test robot
> (W=1 warning)
Greg, can you pick this one up for 7.1?
Johan
prev parent reply other threads:[~2026-03-30 11:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-11 8:22 [PATCH v3] greybus: es2: drop redundant device reference Johan Hovold
2026-03-30 11:50 ` Johan Hovold [this message]
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