Return-path: Received: from mail-it0-f68.google.com ([209.85.214.68]:36781 "EHLO mail-it0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751901AbcGUHgn (ORCPT ); Thu, 21 Jul 2016 03:36:43 -0400 Received: by mail-it0-f68.google.com with SMTP id j124so691640ith.3 for ; Thu, 21 Jul 2016 00:36:43 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20160721070938.GA2658@redhat.com> References: <1468933237-5226-1-git-send-email-michal.kazior@tieto.com> <20160721070938.GA2658@redhat.com> From: Emmanuel Grumbach Date: Thu, 21 Jul 2016 10:36:42 +0300 Message-ID: (sfid-20160721_093659_291841_10DEB5C6) Subject: Re: [RFC] ath10k: silence firmware file probing warnings To: Stanislaw Gruszka Cc: Michal Kazior , Kalle Valo , linux-wireless , ath10k Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, Jul 21, 2016 at 10:09 AM, Stanislaw Gruszka wrote: > On Tue, Jul 19, 2016 at 03:00:37PM +0200, Michal Kazior wrote: >> Firmware files are versioned to prevent older >> driver instances to load unsupported firmware >> blobs. This is reflected with a fallback logic >> which attempts to load several firmware files. >> >> This however produced a lot of unnecessary >> warnings sometimes confusing users and leading >> them to rename firmware files making things even >> more confusing. > > This happens on kernels configured with > CONFIG_FW_LOADER_USER_HELPER_FALLBACK and cause not only ugly warnings, > but also 60 seconds delay before loading next firmware version. > For some reason RHEL kernel needs above config option, so this > patch is very welcome from my perspective. > Sorry for my ignorance but how does the firmware loading work if not with udev's help? As you can imagine, iwlwifi is suffering from the same problem and I would be interested in applying the same change, but I'd love to understand a bit more :)