From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vinod Koul Subject: Re: [PATCH] dmaengine: at_hdmac: fix module unloading Date: Thu, 29 Nov 2018 19:51:18 +0530 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-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20181127160635.11836-2-richard.genoud@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Richard Genoud Cc: Alexandre Belloni , Mario Forner , Maxime Ripard , stable@vger.kernel.org, linux-kernel@vger.kernel.org, Ludovic Desroches , linux-serial@vger.kernel.org, dmaengine@vger.kernel.org, Dan Williams , linux-arm-kernel@lists.infradead.org List-Id: linux-serial@vger.kernel.org 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