From ded255be2276d365a91af2de7c7f8e2c233d4fa2 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 1 Oct 2015 17:59:43 +0200
Subject: ALSA: hda - consolidate chip rename functions
A few multiple codec drivers do renaming the chip_name string but all
these are open-coded and some of them have even no error check. Let's
make common helpers to do it properly.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
sound/hda/hdac_device.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
(limited to 'sound/hda')
diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c
index b3b0ad289df1..4b06b26cee06 100644
--- a/sound/hda/hdac_device.c
+++ b/sound/hda/hdac_device.c
@@ -163,6 +163,28 @@ void snd_hdac_device_unregister(struct hdac_device *codec)
}
EXPORT_SYMBOL_GPL(snd_hdac_device_unregister);
+/**
+ * snd_hdac_device_set_chip_name - set/update the codec name
+ * @codec: the HDAC device
+ * @name: name string to set
+ *
+ * Returns 0 if the name is set or updated, or a negative error code.
+ */
+int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name)
+{
+ char *newname;
+
+ if (!name)
+ return 0;
+ newname = kstrdup(name, GFP_KERNEL);
+ if (!newname)
+ return -ENOMEM;
+ kfree(codec->chip_name);
+ codec->chip_name = newname;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name);
+
/**
* snd_hdac_make_cmd - compose a 32bit command word to be sent to the
* HD-audio controller
--
cgit