From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net] amd-xgbe: Enable IRQs only if napi_complete_done() is true Date: Thu, 09 Mar 2017 18:31:47 -0800 (PST) Message-ID: <20170309.183147.1115919481874028502.davem@davemloft.net> References: <20170309234823.11010.87592.stgit@tlendack-t1.amdoffice.net> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, jeremy.linton@arm.com To: thomas.lendacky@amd.com Return-path: Received: from shards.monkeyblade.net ([184.105.139.130]:48292 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753648AbdCJCbu (ORCPT ); Thu, 9 Mar 2017 21:31:50 -0500 In-Reply-To: <20170309234823.11010.87592.stgit@tlendack-t1.amdoffice.net> Sender: netdev-owner@vger.kernel.org List-ID: From: Tom Lendacky Date: Thu, 9 Mar 2017 17:48:23 -0600 > Depending on the hardware, the amd-xgbe driver may use disable_irq_nosync() > and enable_irq() when an interrupt is received to process Rx packets. If > the napi_complete_done() return value isn't checked an unbalanced enable > for the IRQ could result, generating a warning stack trace. > > Update the driver to only enable interrupts if napi_complete_done() returns > true. > > Reported-by: Jeremy Linton > Signed-off-by: Tom Lendacky Applied, thanks.