From: Cezary Rojewski cezary.rojewski@intel.com

commit 2ef81057d80456870b97890dd79c8f56a85b1242 upstream.

Skylake driver does the controller init operation twice: - first during probe (only to stop it just before scheduling probe_work) - and during said probe_work where the actual correct sequence is executed

To properly complete boot sequence when iDisp codec is present, bus initialization has to be called only after _i915_init() finishes. With additional _reset_list preceding _i915_init(), iDisp codec never gets the chance to enumerate on the link. Remove the superfluous initialization to address the issue.

Signed-off-by: Cezary Rojewski cezary.rojewski@intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Link: https://lore.kernel.org/r/20200305145314.32579-2-cezary.rojewski@intel.com Signed-off-by: Mark Brown broonie@kernel.org Cc: stable@vger.kernel.org # 5.4.x Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- sound/soc/intel/skylake/skl.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-)

--- a/sound/soc/intel/skylake/skl.c +++ b/sound/soc/intel/skylake/skl.c @@ -807,6 +807,9 @@ static void skl_probe_work(struct work_s return; }

+ skl_init_pci(skl); + skl_dum_set(bus); + err = skl_init_chip(bus, true); if (err < 0) { dev_err(bus->dev, "Init chip failed with err: %d\n", err); @@ -922,8 +925,6 @@ static int skl_first_init(struct hdac_bu return -ENXIO; }

- snd_hdac_bus_reset_link(bus, true); - snd_hdac_bus_parse_capabilities(bus);

/* check if PPCAP exists */ @@ -971,11 +972,7 @@ static int skl_first_init(struct hdac_bu if (err < 0) return err;

- /* initialize chip */ - skl_init_pci(skl); - skl_dum_set(bus); - - return skl_init_chip(bus, true); + return 0; }

static int skl_probe(struct pci_dev *pci, @@ -1080,8 +1077,6 @@ static int skl_probe(struct pci_dev *pci if (bus->mlcap) snd_hdac_ext_bus_get_ml_capabilities(bus);

- snd_hdac_bus_stop_chip(bus); - /* create device for soc dmic */ err = skl_dmic_device_register(skl); if (err < 0) {