Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754875Ab2HIN0z (ORCPT ); Thu, 9 Aug 2012 09:26:55 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:38322 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752229Ab2HIN0y (ORCPT ); Thu, 9 Aug 2012 09:26:54 -0400 Message-ID: <5023BAA0.1080304@canonical.com> Date: Thu, 09 Aug 2012 15:26:56 +0200 From: David Henningsson User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120714 Thunderbird/14.0 MIME-Version: 1.0 To: Takashi Iwai CC: Thierry Reding , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] ALSA: hda - Deferred probing with request_firmware_nowait() References: <1344494723-6827-1-git-send-email-thierry.reding@avionic-design.de> <20120809070813.GA6979@avionic-0098.mockup.avionic-design.de> <20120809073642.GA24695@avionic-0098.mockup.avionic-design.de> <20120809080713.GC24808@avionic-0098.mockup.avionic-design.de> <20120809103430.GA1560@avionic-0098.mockup.avionic-design.de> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1202 Lines: 38 On 08/09/2012 03:11 PM, Takashi Iwai wrote: > @@ -3187,13 +3217,16 @@ static int __devinit azx_probe(struct pci_dev *pci, > if (patch[dev] && *patch[dev]) { > snd_printk(KERN_ERR SFX "Applying patch firmware '%s'\n", > patch[dev]); > - err = request_firmware(&chip->fw, patch[dev], &pci->dev); > + err = request_firmware_nowait(THIS_MODULE, true, patch[dev], > + &pci->dev, GFP_KERNEL, card, > + azx_firmware_cb); > if (err < 0) > goto out_free; > + chip->probe_deferred = 1; I might be out on deep water here, but isn't this racy? Or is azx_firmware_cb somehow guaranteed not to execute before this function has exited? > } > #endif /* CONFIG_SND_HDA_PATCH_LOADER */ > > - if (!chip->disabled) { > + if (!chip->disabled && !chip->probe_deferred) { > err = azx_probe_continue(chip); > if (err < 0) > goto out_free; > -- David Henningsson, Canonical Ltd. https://launchpad.net/~diwic -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/