From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751523AbdF1HWF (ORCPT ); Wed, 28 Jun 2017 03:22:05 -0400 Received: from s3.sipsolutions.net ([5.9.151.49]:55476 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751225AbdF1HV6 (ORCPT ); Wed, 28 Jun 2017 03:21:58 -0400 Message-ID: <1498634512.12531.1.camel@sipsolutions.net> Subject: Re: [PATCH 05/14] mwifiex: re-register wiphy across reset From: Johannes Berg To: Brian Norris Cc: Kalle Valo , Ganapathi Bhat , Nishant Sarmukadam , linux-kernel@vger.kernel.org, Dmitry Torokhov , Amitkumar Karwar , linux-wireless@vger.kernel.org Date: Wed, 28 Jun 2017 09:21:52 +0200 In-Reply-To: <20170627195003.GA93674@google.com> (sfid-20170627_215010_204503_7ACDE0D1) References: <20170525001119.64791-1-briannorris@chromium.org> <20170525001119.64791-5-briannorris@chromium.org> <87fufk2hmm.fsf@purkki.adurom.net> <20170601173954.GA138807@google.com> <87inka77md.fsf@codeaurora.org> <20170621174829.GA92340@google.com> <1498136389.2246.7.camel@sipsolutions.net> <20170627195003.GA93674@google.com> (sfid-20170627_215010_204503_7ACDE0D1) Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.22.6-1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Brian, > Wow, that's not exactly simple code; I expect it could be pretty > difficult to get that right today on mwifiex. Yeah, I have no doubt. You'd probably have to track a lot of state that you just pass down to the firmware too, and possibly can't even track some state that the firmware derives itself (like for example PNs for keys) > The current approach > actually should be *easier* (for the kernel side) to avoid bugs, as > it should be basically the same thing as 'rmmod'. Nonetheless, there > are plenty of bugs. :-) johannes