From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.99]:51502 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731655AbeK3B06 (ORCPT ); Thu, 29 Nov 2018 20:26:58 -0500 Date: Thu, 29 Nov 2018 19:51:18 +0530 From: Vinod Koul To: Richard Genoud Cc: Ludovic Desroches , Dan Williams , Alexandre Belloni , Nicolas Ferre , Maxime Ripard , Mario Forner , linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] dmaengine: at_hdmac: fix module unloading Message-ID: <20181129142118.GI3175@vkoul-mobl.Dlink> References: <20181127160635.11836-1-richard.genoud@gmail.com> <20181127160635.11836-2-richard.genoud@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181127160635.11836-2-richard.genoud@gmail.com> Sender: stable-owner@vger.kernel.org List-ID: 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