linux-kernel - [PATCH 3/7] ASoC: Intel: avs: Move snd_hdac_i915_init to before probe

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230718084522.116952-4-maarten.lankhorst@linux.intel.com>
Date:   Tue, 18 Jul 2023 10:45:18 +0200
From:   Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
To:     alsa-devel@...a-project.org
Cc:     sound-open-firmware@...a-project.org, linux-kernel@...r.kernel.org,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Peter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
        Bard Liao <yung-chuan.liao@...ux.intel.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Daniel Baluta <daniel.baluta@....com>
Subject: [PATCH 3/7] ASoC: Intel: avs: Move snd_hdac_i915_init to before probe_work.

Now that we can use -EPROBE_DEFER, it's no longer required to spin off
the snd_hdac_i915_init into a workqueue. It's likely the whole workqueue
can be destroyed, but I don't have the means to test this.

Removing the workqueue would simplify init even further, but is left
as exercise for the reviewer.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
---
 sound/soc/intel/avs/core.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/sound/soc/intel/avs/core.c b/sound/soc/intel/avs/core.c
index 3311a6f142001..d3a7f42387e9b 100644
--- a/sound/soc/intel/avs/core.c
+++ b/sound/soc/intel/avs/core.c
@@ -191,10 +191,6 @@ static void avs_hda_probe_work(struct work_struct *work)
 
 	pm_runtime_set_active(bus->dev); /* clear runtime_error flag */
 
-	ret = snd_hdac_i915_init(bus, true);
-	if (ret < 0)
-		dev_info(bus->dev, "i915 init unsuccessful: %d\n", ret);
-
 	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
 	avs_hdac_bus_init_chip(bus, true);
 	avs_hdac_bus_probe_codecs(bus);
@@ -465,10 +461,19 @@ static int avs_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
 	pci_set_drvdata(pci, bus);
 	device_disable_async_suspend(dev);
 
+	ret = snd_hdac_i915_init(bus, false);
+	if (ret == -EPROBE_DEFER)
+		goto err_unmaster;
+	else if (ret < 0)
+		dev_info(bus->dev, "i915 init unsuccessful: %d\n", ret);
+
 	schedule_work(&adev->probe_work);
 
 	return 0;
 
+err_unmaster:
+	pci_clear_master(pci);
+	pci_set_drvdata(pci, NULL);
 err_acquire_irq:
 	snd_hdac_bus_free_stream_pages(bus);
 	snd_hdac_ext_stream_free_all(bus);
-- 
2.39.2