ALSA: hdac: remove memory allocation from snd_hdac_ext_bus_device_init

Remove memory allocation within snd_hdac_ext_bus_device_init, to make
its behaviour identical to snd_hdac_bus_device_init. So that caller
can allocate the parent data structure containing hdac_device.
This API change helps in reusing the legacy HDA codec drivers with
ASoC platform drivers.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h
index 3c30247..c188b80 100644 (file)
--- a/include/sound/hdaudio_ext.h
+++ b/include/sound/hdaudio_ext.h
@@ -9,7 +9,8 @@ int snd_hdac_ext_bus_init(struct hdac_bus *bus, struct device *dev,
                      const struct hdac_io_ops *io_ops);
 
 void snd_hdac_ext_bus_exit(struct hdac_bus *bus);
-int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr);
+int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr,
+                                               struct hdac_device *hdev);
 void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev);
 void snd_hdac_ext_bus_device_remove(struct hdac_bus *bus);
 

diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c
index 52f0776..1eb5824 100644 (file)
--- a/sound/hda/ext/hdac_ext_bus.c
+++ b/sound/hda/ext/hdac_ext_bus.c
@@ -135,16 +135,12 @@ static void default_release(struct device *dev)
  *
  * Returns zero for success or a negative error code.
  */
-int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr)
+int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr,
+                                       struct hdac_device *hdev)
 {
-       struct hdac_device *hdev = NULL;
        char name[15];
        int ret;
 
-       hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
-       if (!hdev)
-               return -ENOMEM;
-
        hdev->bus = bus;
 
        snprintf(name, sizeof(name), "ehdaudio%dD%d", bus->idx, addr);

diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c
index 9c5a701..3a7f5eb 100644 (file)
--- a/sound/soc/intel/skylake/skl.c
+++ b/sound/soc/intel/skylake/skl.c
@@ -635,6 +635,8 @@ static int probe_codec(struct hdac_bus *bus, int addr)
        unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) |
                (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
        unsigned int res = -1;
+       struct skl *skl = bus_to_skl(bus);
+       struct hdac_device *hdev;
 
        mutex_lock(&bus->cmd_mutex);
        snd_hdac_bus_send_cmd(bus, cmd);
@@ -644,7 +646,11 @@ static int probe_codec(struct hdac_bus *bus, int addr)
                return -EIO;
        dev_dbg(bus->dev, "codec #%d probed OK\n", addr);
 
-       return snd_hdac_ext_bus_device_init(bus, addr);
+       hdev = devm_kzalloc(&skl->pci->dev, sizeof(*hdev), GFP_KERNEL);
+       if (!hdev)
+               return -ENOMEM;
+
+       return snd_hdac_ext_bus_device_init(bus, addr, hdev);
 }
 
 /* Codec initialization */