audio: module_adapter: ipc4: Allow probes module through channels check

The channel check introduced in commit:

cdb7f91 ("audio: module_adapter: bound host channels_count at ipc4 init")

does not let probes module through. Add extra condition to allows
probes that relies on ipc4 probes implementation on Linux ASoC side,
that initializes the whole base config as zero for probes module.

Signed-off-by: Jyri Sarha <jyri.sarha@linux.intel.com>

Author: Jyri Sarha

src/audio/module_adapter/module_adapter_ipc4.c

@@ -126,6 +126,20 @@ int module_ext_init_decode(const struct comp_driver *drv, struct module_ext_init
 	return 0;
 }
 
+/* Check if entire base config is all zero, as it is with probe module */
+static bool is_probe_module(struct ipc4_base_module_cfg *base_cfg)
+{
+	const unsigned char *p = (const unsigned char *)base_cfg;
+	size_t s = sizeof(*base_cfg);
+
+	for (size_t i = 0; i < s; i++) {
+		if (p[i] != 0) {
+			return false;
+		}
+	}
+	return true;
+}
+
 /*
  * \module adapter data initialize.
  * \param[in] dev - device.
@@ -158,8 +172,9 @@ int module_adapter_init_data(struct comp_dev *dev,
 	dst->size = cfgsz;
 
 	/* Host-supplied channel count indexes PLATFORM_MAX_CHANNELS arrays. */
-	if (dst->base_cfg.audio_fmt.channels_count == 0 ||
-	    dst->base_cfg.audio_fmt.channels_count > PLATFORM_MAX_CHANNELS) {
+	if ((dst->base_cfg.audio_fmt.channels_count == 0 ||
+	     dst->base_cfg.audio_fmt.channels_count > PLATFORM_MAX_CHANNELS) &&
+	    !is_probe_module(&dst->base_cfg)) {
 		comp_err(dev, "invalid channels count %u",
 			 dst->base_cfg.audio_fmt.channels_count);
 		return -EINVAL;