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SubjectRe: [PATCH] net: ucc_geth - fix Oops when changing number of buffers in the ring
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From: Christophe Leroy <christophe.leroy@c-s.fr>
Date: Fri, 3 May 2019 13:33:23 +0000 (UTC)

> When changing the number of buffers in the RX ring while the interface
> is running, the following Oops is encountered due to the new number
> of buffers being taken into account immediately while their allocation
> is done when opening the device only.
...
> This patch forbids the modification of the number of buffers in the
> ring while the interface is running.
>
> Fixes: ac421852b3a0 ("ucc_geth: add ethtool support")
> Cc: stable@vger.kernel.org
> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

Applied and queued up for -stable.

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