linux-kernel - Re: [PATCH] dmaengine: at_hdmac: fix module unloading

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Message-ID: <20181129142118.GI3175@vkoul-mobl.Dlink>
Date:   Thu, 29 Nov 2018 19:51:18 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Richard Genoud <richard.genoud@...il.com>
Cc:     Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Mario Forner <m.forner@...energy.com>,
        linux-arm-kernel@...ts.infradead.org, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH] dmaengine: at_hdmac: fix module unloading

On 27-11-18, 17:06, Richard Genoud wrote:
> of_dma_controller_free() was not called on module onloading.
> This lead to a soft lockup:
> watchdog: BUG: soft lockup - CPU#0 stuck for 23s!
> Modules linked in: at_hdmac [last unloaded: at_hdmac]
> when of_dma_request_slave_channel() tried to call ofdma->of_dma_xlate().

Applied, thanks

-- 
~Vinod