The patch
ASoC: hdac_hda: Fix error in driver removal after failed probe
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
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Thanks, Mark
From 552b1a85da9f63856e7e341b81c16e0e078204f1 Mon Sep 17 00:00:00 2001
From: Kai Vehmanen kai.vehmanen@linux.intel.com Date: Fri, 10 Jan 2020 17:57:51 -0600 Subject: [PATCH] ASoC: hdac_hda: Fix error in driver removal after failed probe
In case system has multiple HDA codecs, and codec probe fails for at least one but not all codecs, driver will end up cancelling a non-initialized timer context upon driver removal.
Call trace of typical case:
[ 60.593646] WARNING: CPU: 1 PID: 1147 at kernel/workqueue.c:3032 __flush_work+0x18b/0x1a0 [...] [ 60.593670] __cancel_work_timer+0x11f/0x1a0 [ 60.593673] hdac_hda_dev_remove+0x25/0x30 [snd_soc_hdac_hda] [ 60.593674] device_release_driver_internal+0xe0/0x1c0 [ 60.593675] bus_remove_device+0xd6/0x140 [ 60.593677] device_del+0x175/0x3e0 [ 60.593679] ? widget_tree_free.isra.7+0x90/0xb0 [snd_hda_core] [ 60.593680] snd_hdac_device_unregister+0x34/0x50 [snd_hda_core] [ 60.593682] snd_hdac_ext_bus_device_remove+0x2a/0x60 [snd_hda_ext_core] [ 60.593684] hda_dsp_remove+0x26/0x100 [snd_sof_intel_hda_common] [ 60.593686] snd_sof_device_remove+0x84/0xa0 [snd_sof] [ 60.593687] sof_pci_remove+0x10/0x30 [snd_sof_pci] [ 60.593689] pci_device_remove+0x36/0xb0
Signed-off-by: Kai Vehmanen kai.vehmanen@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Link: https://lore.kernel.org/r/20200110235751.3404-9-pierre-louis.bossart@linux.i... Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/hdac_hda.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/hdac_hda.c b/sound/soc/codecs/hdac_hda.c index 6803d39e09a5..43110151e928 100644 --- a/sound/soc/codecs/hdac_hda.c +++ b/sound/soc/codecs/hdac_hda.c @@ -588,7 +588,9 @@ static int hdac_hda_dev_remove(struct hdac_device *hdev) struct hdac_hda_priv *hda_pvt;
hda_pvt = dev_get_drvdata(&hdev->dev); - cancel_delayed_work_sync(&hda_pvt->codec.jackpoll_work); + if (hda_pvt && hda_pvt->codec.registered) + cancel_delayed_work_sync(&hda_pvt->codec.jackpoll_work); + return 0; }