[alsa-devel] [PATCH 4/6] ALSA: hda - Add hdaudio bus modalias support

[Takashi Iwai]

From: "Subhransu S. Prusty" <subhransu.s.prusty at intel.com>

This patch just adds modalias sysfs entry to each hdaudio bus entry.

[rewritten to call the common helper function by tiwai]

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty at intel.com>
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/hda/hdac_sysfs.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sound/hda/hdac_sysfs.c b/sound/hda/hdac_sysfs.c
index c71142dea98a..42d61bf41969 100644
--- a/sound/hda/hdac_sysfs.c
+++ b/sound/hda/hdac_sysfs.c
@@ -45,6 +45,13 @@ CODEC_ATTR(mfg);
 CODEC_ATTR_STR(vendor_name);
 CODEC_ATTR_STR(chip_name);
 
+static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
+			     char *buf)
+{
+	return snd_hdac_codec_modalias(dev_to_hdac_dev(dev), buf, 256);
+}
+static DEVICE_ATTR_RO(modalias);
+
 static struct attribute *hdac_dev_attrs[] = {
 	&dev_attr_type.attr,
 	&dev_attr_vendor_id.attr,
@@ -54,6 +61,7 @@ static struct attribute *hdac_dev_attrs[] = {
 	&dev_attr_mfg.attr,
 	&dev_attr_vendor_name.attr,
 	&dev_attr_chip_name.attr,
+	&dev_attr_modalias.attr,
 	NULL
 };
 
-- 
2.6.1