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| author | Yu Zhao <yuzhao@google.com> | 2018-09-11 15:15:16 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-10-18 09:18:15 +0200 |
| commit | aeaca3563bea4d36b373949097e091f76505204f (patch) | |
| tree | 21de67ab9dfc4767ae01e0494d257395a8aba631 /sound | |
| parent | 9761976f8e01594c4a4a01ce3ac172686495a94e (diff) | |
| download | linux-stable-aeaca3563bea4d36b373949097e091f76505204f.tar.gz linux-stable-aeaca3563bea4d36b373949097e091f76505204f.tar.bz2 linux-stable-aeaca3563bea4d36b373949097e091f76505204f.zip | |
sound: don't call skl_init_chip() to reset intel skl soc
[ Upstream commit 75383f8d39d4c0fb96083dd460b7b139fbdac492 ]
Internally, skl_init_chip() calls snd_hdac_bus_init_chip() which
1) sets bus->chip_init to prevent multiple entrances before device
is stopped; 2) enables interrupt.
We shouldn't use it for the purpose of resetting device only because
1) when we really want to initialize device, we won't be able to do
so; 2) we are ready to handle interrupt yet, and kernel crashes when
interrupt comes in.
Rename azx_reset() to snd_hdac_bus_reset_link(), and use it to reset
device properly.
Fixes: 60767abcea3d ("ASoC: Intel: Skylake: Reset the controller in probe")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/hda/hdac_controller.c | 7 | ||||
| -rw-r--r-- | sound/soc/intel/skylake/skl.c | 2 |
2 files changed, 5 insertions, 4 deletions
diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c index 11057d9f84ec..74244d8e2909 100644 --- a/sound/hda/hdac_controller.c +++ b/sound/hda/hdac_controller.c @@ -385,7 +385,7 @@ void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus) EXPORT_SYMBOL_GPL(snd_hdac_bus_exit_link_reset); /* reset codec link */ -static int azx_reset(struct hdac_bus *bus, bool full_reset) +int snd_hdac_bus_reset_link(struct hdac_bus *bus, bool full_reset) { if (!full_reset) goto skip_reset; @@ -410,7 +410,7 @@ static int azx_reset(struct hdac_bus *bus, bool full_reset) skip_reset: /* check to see if controller is ready */ if (!snd_hdac_chip_readb(bus, GCTL)) { - dev_dbg(bus->dev, "azx_reset: controller not ready!\n"); + dev_dbg(bus->dev, "controller not ready!\n"); return -EBUSY; } @@ -425,6 +425,7 @@ static int azx_reset(struct hdac_bus *bus, bool full_reset) return 0; } +EXPORT_SYMBOL_GPL(snd_hdac_bus_reset_link); /* enable interrupts */ static void azx_int_enable(struct hdac_bus *bus) @@ -479,7 +480,7 @@ bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset) return false; /* reset controller */ - azx_reset(bus, full_reset); + snd_hdac_bus_reset_link(bus, full_reset); /* clear interrupts */ azx_int_clear(bus); diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c index f0d9793f872a..c7cdfa4a7076 100644 --- a/sound/soc/intel/skylake/skl.c +++ b/sound/soc/intel/skylake/skl.c @@ -844,7 +844,7 @@ static int skl_first_init(struct hdac_ext_bus *ebus) return -ENXIO; } - skl_init_chip(bus, true); + snd_hdac_bus_reset_link(bus, true); snd_hdac_bus_parse_capabilities(bus); |