ASoC: SOF: ipc-msg-injector: Query the maximum IPC payload size

Instead of using the SOF_IPC_MSG_MAX_SIZE as the maximum payload size for
and IPC message, use the provided API to query it.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220506132647.18690-3-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/sof/sof-client-ipc-msg-injector.c b/sound/soc/sof/sof-client-ipc-msg-injector.c
index c711981187aacd925db957a21e52d6fe612a8141..19bb6212cb56a724bda7bae6c836d282521f05f8 100644 (file)
--- a/sound/soc/sof/sof-client-ipc-msg-injector.c
+++ b/sound/soc/sof/sof-client-ipc-msg-injector.c
@@ -22,6 +22,7 @@
 
 struct sof_msg_inject_priv {
        struct dentry *dfs_file;
+       size_t max_msg_size;
 
        void *tx_buffer;
        void *rx_buffer;
@@ -78,7 +79,7 @@ static ssize_t sof_msg_inject_dfs_write(struct file *file, const char __user *bu
        if (*ppos)
                return 0;
 
-       size = simple_write_to_buffer(priv->tx_buffer, SOF_IPC_MSG_MAX_SIZE,
+       size = simple_write_to_buffer(priv->tx_buffer, priv->max_msg_size,
                                      ppos, buffer, count);
        if (size != count)
                return size > 0 ? -EFAULT : size;
@@ -90,9 +91,9 @@ static ssize_t sof_msg_inject_dfs_write(struct file *file, const char __user *bu
        }
 
        /* send the message */
-       memset(priv->rx_buffer, 0, SOF_IPC_MSG_MAX_SIZE);
+       memset(priv->rx_buffer, 0, priv->max_msg_size);
        ret = sof_client_ipc_tx_message(cdev, priv->tx_buffer, priv->rx_buffer,
-                                       SOF_IPC_MSG_MAX_SIZE);
+                                       priv->max_msg_size);
        pm_runtime_mark_last_busy(dev);
        err = pm_runtime_put_autosuspend(dev);
        if (err < 0)
@@ -135,8 +136,9 @@ static int sof_msg_inject_probe(struct auxiliary_device *auxdev,
        if (!priv)
                return -ENOMEM;
 
-       priv->tx_buffer = devm_kmalloc(dev, SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL);
-       priv->rx_buffer = devm_kzalloc(dev, SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL);
+       priv->max_msg_size = sof_client_get_ipc_max_payload_size(cdev);
+       priv->tx_buffer = devm_kmalloc(dev, priv->max_msg_size, GFP_KERNEL);
+       priv->rx_buffer = devm_kzalloc(dev, priv->max_msg_size, GFP_KERNEL);
        if (!priv->tx_buffer || !priv->rx_buffer)
                return -ENOMEM;