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authorAmadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>2019-06-17 13:36:35 +0200
committerMark Brown <broonie@kernel.org>2019-06-25 15:32:58 +0100
commit8a5b0177a7f6099ff534a4d9ce72673af5c3cade (patch)
treecefe9e3842b694ab70667c529bddfcc55f3ee05c /sound/hda
parent776cb3b80ede9ef4ad4c8aac22fcbdf4852b44cd (diff)
downloadlinux-8a5b0177a7f6099ff534a4d9ce72673af5c3cade.tar.bz2
ALSA: hdac: Fix codec name after machine driver is unloaded and reloaded
Currently on each driver reload internal counter is being increased. It causes failure to enumerate driver devices, as they have hardcoded: .codec_name = "ehdaudio0D2", As there is currently no devices with multiple hda codecs and there is currently no established way to reliably differentiate, between them, always assign bus->idx = 0; This fixes a problem when we unload and reload machine driver idx gets incremented, so .codec_name would've needed to be set to "ehdaudio1D2" after first reload and so on. Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com> Acked-by: Takashi Iwai <tiwai@suse.de> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/hda')
-rw-r--r--sound/hda/ext/hdac_ext_bus.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c
index f33ba58b753c..71dad104ff8a 100644
--- a/sound/hda/ext/hdac_ext_bus.c
+++ b/sound/hda/ext/hdac_ext_bus.c
@@ -93,7 +93,6 @@ int snd_hdac_ext_bus_init(struct hdac_bus *bus, struct device *dev,
const struct hdac_ext_bus_ops *ext_ops)
{
int ret;
- static int idx;
/* check if io ops are provided, if not load the defaults */
if (io_ops == NULL)
@@ -104,7 +103,12 @@ int snd_hdac_ext_bus_init(struct hdac_bus *bus, struct device *dev,
return ret;
bus->ext_ops = ext_ops;
- bus->idx = idx++;
+ /* FIXME:
+ * Currently only one bus is supported, if there is device with more
+ * buses, bus->idx should be greater than 0, but there needs to be a
+ * reliable way to always assign same number.
+ */
+ bus->idx = 0;
bus->cmd_dma_state = true;
return 0;