Hi Marc and Mark, Mark already noticed this was no longer needed, but I just wanted to note things for the record, since Marc seemed curious. On Wed, Jan 24, 2018 at 7:36 AM, Mark Brown <broonie@xxxxxxxxxx> wrote: ... > > From 509bf3a7d43ab173abc354df2a859229ede043c0 Mon Sep 17 00:00:00 2001 > From: Marc Zyngier <marc.zyngier@xxxxxxx> > Date: Wed, 24 Jan 2018 14:50:00 +0000 > Subject: [PATCH] ASoC: rt5514-spi: Check the validity of drvdata pointer on > resume > > The rt5514-spi driver seem to assume the validity of the drvdata pointer > on resume, which it may not be populated, leading to a not-so-nice crash. This part was fixed with this: 346cccf88319 ASoC: rt5514: Add the sanity check for the driver_data in the resume function which is in 4.15-rc6 > This stems from the fact that rt5514_spi_pcm_probe() is never called on > my system (a kevin Chromebook). No idea why, but if it can happen, it > is worth fixing. I believe the rk3399_gru_sound driver currently does not set up the DAI links properly at the moment. This patch is still waiting, to fix that: https://patchwork.kernel.org/patch/10067725/ [PATCH] ASoC: rockchip: Use dummy_dai for rt5514 dsp dailinkgi Brian > Fixes: e9c50aa6bd39 ("ASoC: rt5514-spi: check irq status to schedule data copy in resume function") > Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx> > Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > --- > sound/soc/codecs/rt5514-spi.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c > index 2df91db765ac..9255afcf2c3a 100644 > --- a/sound/soc/codecs/rt5514-spi.c > +++ b/sound/soc/codecs/rt5514-spi.c > @@ -482,7 +482,7 @@ static int __maybe_unused rt5514_resume(struct device *dev) > if (device_may_wakeup(dev)) > disable_irq_wake(irq); > > - if (rt5514_dsp->substream) { > + if (rt5514_dsp && rt5514_dsp->substream) { > rt5514_spi_burst_read(RT5514_IRQ_CTRL, (u8 *)&buf, sizeof(buf)); > if (buf[0] & RT5514_IRQ_STATUS_BIT) > rt5514_schedule_copy(rt5514_dsp); > -- > 2.15.1 >