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authorYu Zhao <yuzhao@google.com>2018-09-12 00:15:16 +0300
committerMark Brown <broonie@kernel.org>2018-09-12 13:22:09 +0300
commit75383f8d39d4c0fb96083dd460b7b139fbdac492 (patch)
treea67f7449b24e98e50d395fa79f65f9884d6169d5
parentb61749a89f826eb61fc59794d9e4697bd246eb61 (diff)
downloadlinux-75383f8d39d4c0fb96083dd460b7b139fbdac492.tar.xz
sound: don't call skl_init_chip() to reset intel skl soc
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>
-rw-r--r--include/sound/hdaudio.h1
-rw-r--r--sound/hda/hdac_controller.c7
-rw-r--r--sound/soc/intel/skylake/skl.c2
3 files changed, 6 insertions, 4 deletions
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index ab5ee3ef2198..207e816ce6e1 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -384,6 +384,7 @@ void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus);
void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus);
void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus);
void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus);
+int snd_hdac_bus_reset_link(struct hdac_bus *bus, bool full_reset);
void snd_hdac_bus_update_rirb(struct hdac_bus *bus);
int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
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 dce649485649..1d17be0f78a0 100644
--- a/sound/soc/intel/skylake/skl.c
+++ b/sound/soc/intel/skylake/skl.c
@@ -834,7 +834,7 @@ static int skl_first_init(struct hdac_bus *bus)
return -ENXIO;
}
- skl_init_chip(bus, true);
+ snd_hdac_bus_reset_link(bus, true);
snd_hdac_bus_parse_capabilities(bus);