ASoC/SOF/Intel/AMD: cleanups for GCC11 -fanalyzer

Merge series from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>:

GCC11 provides an '-fanalyzer' static analysis option which does not
provide too many false-positives. This patch cleans-up known
problematic code paths to help enable this capability in CI. We've
used this for about a month already.

include/linux/firmware/imx/dsp.h

@@ -37,17 +37,11 @@ struct imx_dsp_ipc {
 
 static inline void imx_dsp_set_data(struct imx_dsp_ipc *ipc, void *data)
 {
-	if (!ipc)
-		return;
-
 	ipc->private_data = data;
 }
 
 static inline void *imx_dsp_get_data(struct imx_dsp_ipc *ipc)
 {
-	if (!ipc)
-		return NULL;
-
 	return ipc->private_data;
 }
 

include/linux/firmware/mediatek/mtk-adsp-ipc.h

@@ -46,17 +46,11 @@ struct mtk_adsp_ipc {
 
 static inline void mtk_adsp_ipc_set_data(struct mtk_adsp_ipc *ipc, void *data)
 {
-	if (!ipc)
-		return;
-
 	ipc->private_data = data;
 }
 
 static inline void *mtk_adsp_ipc_get_data(struct mtk_adsp_ipc *ipc)
 {
-	if (!ipc)
-		return NULL;
-
 	return ipc->private_data;
 }
 

sound/soc/amd/vangogh/acp5x-mach.c

@@ -170,6 +170,9 @@ static int acp5x_nau8821_hw_params(struct snd_pcm_substream *substream,
 	struct snd_soc_dai *dai = snd_soc_card_get_codec_dai(card, ACP5X_NAU8821_DAI_NAME);
 	int ret, bclk;
 
+	if (!dai)
+		return -EINVAL;
+
 	ret = snd_soc_dai_set_sysclk(dai, NAU8821_CLK_FLL_BLK, 0, SND_SOC_CLOCK_IN);
 	if (ret < 0)
 		dev_err(card->dev, "can't set FS clock %d\n", ret);

sound/soc/intel/atom/sst/sst_stream.c

@@ -173,10 +173,11 @@ int sst_send_byte_stream_mrfld(struct intel_sst_drv *sst_drv_ctx,
 	u32 length;
 	int pvt_id, ret = 0;
 	struct sst_block *block = NULL;
+	u8 bytes_block = bytes->block;
 
 	dev_dbg(sst_drv_ctx->dev,
 		"type:%u ipc_msg:%u block:%u task_id:%u pipe: %#x length:%#x\n",
-		bytes->type, bytes->ipc_msg, bytes->block, bytes->task_id,
+		bytes->type, bytes->ipc_msg, bytes_block, bytes->task_id,
 		bytes->pipe_id, bytes->len);
 
 	if (sst_create_ipc_msg(&msg, true))
@@ -185,12 +186,12 @@ int sst_send_byte_stream_mrfld(struct intel_sst_drv *sst_drv_ctx,
 	pvt_id = sst_assign_pvt_id(sst_drv_ctx);
 	sst_fill_header_mrfld(&msg->mrfld_header, bytes->ipc_msg,
 			bytes->task_id, 1, pvt_id);
-	msg->mrfld_header.p.header_high.part.res_rqd = bytes->block;
+	msg->mrfld_header.p.header_high.part.res_rqd = bytes_block;
 	length = bytes->len;
 	msg->mrfld_header.p.header_low_payload = length;
 	dev_dbg(sst_drv_ctx->dev, "length is %d\n", length);
 	memcpy(msg->mailbox_data, &bytes->bytes, bytes->len);
-	if (bytes->block) {
+	if (bytes_block) {
 		block = sst_create_block(sst_drv_ctx, bytes->ipc_msg, pvt_id);
 		if (block == NULL) {
 			kfree(msg);
@@ -203,7 +204,7 @@ int sst_send_byte_stream_mrfld(struct intel_sst_drv *sst_drv_ctx,
 	dev_dbg(sst_drv_ctx->dev, "msg->mrfld_header.p.header_low_payload:%d",
 			msg->mrfld_header.p.header_low_payload);
 
-	if (bytes->block) {
+	if (bytes_block) {
 		ret = sst_wait_timeout(sst_drv_ctx, block);
 		if (ret) {
 			dev_err(sst_drv_ctx->dev, "fw returned err %d\n", ret);
@@ -216,7 +217,7 @@ int sst_send_byte_stream_mrfld(struct intel_sst_drv *sst_drv_ctx,
 		 * copy the reply and send back
 		 * we need to update only sz and payload
 		 */
-		if (bytes->block) {
+		if (bytes_block) {
 			unsigned char *r = block->data;
 
 			dev_dbg(sst_drv_ctx->dev, "read back %d bytes",
@@ -224,7 +225,7 @@ int sst_send_byte_stream_mrfld(struct intel_sst_drv *sst_drv_ctx,
 			memcpy(bytes->bytes, r, bytes->len);
 		}
 	}
-	if (bytes->block)
+	if (bytes_block)
 		sst_free_block(sst_drv_ctx, block);
 out:
 	test_and_clear_bit(pvt_id, &sst_drv_ctx->pvt_id);

sound/soc/intel/boards/bdw_rt286.c

@@ -187,6 +187,9 @@ static int card_suspend_pre(struct snd_soc_card *card)
 {
 	struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, "rt286-aif1");
 
+	if (!codec_dai)
+		return 0;
+
 	return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
 }
 
@@ -194,6 +197,9 @@ static int card_resume_post(struct snd_soc_card *card)
 {
 	struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, "rt286-aif1");
 
+	if (!codec_dai)
+		return 0;
+
 	return snd_soc_component_set_jack(codec_dai->component, &card_headset, NULL);
 }
 

sound/soc/sof/ipc3.c

@@ -312,7 +312,7 @@ static int ipc3_wait_tx_done(struct snd_sof_ipc *ipc, void *reply_data)
 		} else {
 			if (sof_debug_check_flag(SOF_DBG_PRINT_IPC_SUCCESS_LOGS))
 				ipc3_log_header(sdev->dev, "ipc tx succeeded", hdr->cmd);
-			if (msg->reply_size)
+			if (reply_data && msg->reply_size)
 				/* copy the data returned from DSP */
 				memcpy(reply_data, msg->reply_data,
 				       msg->reply_size);

sound/soc/sof/sof-client-probes-ipc4.c

@@ -146,6 +146,9 @@ static int ipc4_probes_deinit(struct sof_client_dev *cdev)
 	struct sof_man4_module *mentry = sof_ipc4_probe_get_module_info(cdev);
 	struct sof_ipc4_msg msg;
 
+	if (!mentry)
+		return -ENODEV;
+
 	msg.primary = mentry->id;
 	msg.primary |= SOF_IPC4_MSG_TYPE_SET(SOF_IPC4_MOD_DELETE_INSTANCE);
 	msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST);
@@ -197,6 +200,9 @@ static int ipc4_probes_points_add(struct sof_client_dev *cdev,
 	struct sof_ipc4_msg msg;
 	int i, ret;
 
+	if (!mentry)
+		return -ENODEV;
+
 	/* The sof_probe_point_desc and sof_ipc4_probe_point structs
 	 * are of same size and even the integers are the same in the
 	 * same order, and similar meaning, but since there is no
@@ -247,6 +253,9 @@ static int ipc4_probes_points_remove(struct sof_client_dev *cdev,
 	u32 *probe_point_ids;
 	int i, ret;
 
+	if (!mentry)
+		return -ENODEV;
+
 	probe_point_ids = kcalloc(num_buffer_id, sizeof(*probe_point_ids),
 				  GFP_KERNEL);
 	if (!probe_point_ids)

sound/soc/sof/topology.c

@@ -1117,10 +1117,11 @@ static void sof_disconnect_dai_widget(struct snd_soc_component *scomp,
 {
 	struct snd_soc_card *card = scomp->card;
 	struct snd_soc_pcm_runtime *rtd;
+	const char *sname = w->sname;
 	struct snd_soc_dai *cpu_dai;
 	int i, stream;
 
-	if (!w->sname)
+	if (!sname)
 		return;
 
 	if (w->id == snd_soc_dapm_dai_out)
@@ -1133,7 +1134,7 @@ static void sof_disconnect_dai_widget(struct snd_soc_component *scomp,
 	list_for_each_entry(rtd, &card->rtd_list, list) {
 		/* does stream match DAI link ? */
 		if (!rtd->dai_link->stream_name ||
-		    strcmp(w->sname, rtd->dai_link->stream_name))
+		    strcmp(sname, rtd->dai_link->stream_name))
 			continue;
 
 		for_each_rtd_cpu_dais(rtd, i, cpu_dai)