linux-kernel - [PATCH v3 2/4] firmware: mediatek: Use meaningful names for mbox

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Date:   Thu, 16 Jun 2022 15:30:40 +0800
From:   Tinghan Shen <tinghan.shen@...iatek.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Peter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
        Bard Liao <yung-chuan.liao@...ux.intel.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        Daniel Baluta <daniel.baluta@....com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Tinghan Shen <tinghan.shen@...iatek.com>,
        YC Hung <yc.hung@...iatek.com>,
        Curtis Malainey <cujomalainey@...omium.org>,
        Allen-KH Cheng <allen-kh.cheng@...iatek.com>
CC:     <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <sound-open-firmware@...a-project.org>,
        <alsa-devel@...a-project.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH v3 2/4] firmware: mediatek: Use meaningful names for mbox

Rename mbox according to actions instead of 'mbox0' and 'mbox1'

Signed-off-by: Tinghan Shen <tinghan.shen@...iatek.com>
---
 drivers/firmware/mtk-adsp-ipc.c | 36 +++++++++++----------------------
 1 file changed, 12 insertions(+), 24 deletions(-)

diff --git a/drivers/firmware/mtk-adsp-ipc.c b/drivers/firmware/mtk-adsp-ipc.c
index cb255a99170c..3c071f814455 100644
--- a/drivers/firmware/mtk-adsp-ipc.c
+++ b/drivers/firmware/mtk-adsp-ipc.c
@@ -12,6 +12,8 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 
+static const char * const adsp_mbox_ch_names[MTK_ADSP_MBOX_NUM] = { "rx", "tx" };
+
 /*
  * mtk_adsp_ipc_send - send ipc cmd to MTK ADSP
  *
@@ -72,7 +74,6 @@ static int mtk_adsp_ipc_probe(struct platform_device *pdev)
 	struct mtk_adsp_ipc *adsp_ipc;
 	struct mtk_adsp_chan *adsp_chan;
 	struct mbox_client *cl;
-	char *chan_name;
 	int ret;
 	int i, j;
 
@@ -83,12 +84,6 @@ static int mtk_adsp_ipc_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
-		chan_name = kasprintf(GFP_KERNEL, "mbox%d", i);
-		if (!chan_name) {
-			ret = -ENOMEM;
-			goto out;
-		}
-
 		adsp_chan = &adsp_ipc->chans[i];
 		cl = &adsp_chan->cl;
 		cl->dev = dev->parent;
@@ -99,17 +94,20 @@ static int mtk_adsp_ipc_probe(struct platform_device *pdev)
 
 		adsp_chan->ipc = adsp_ipc;
 		adsp_chan->idx = i;
-		adsp_chan->ch = mbox_request_channel_byname(cl, chan_name);
+		adsp_chan->ch = mbox_request_channel_byname(cl, adsp_mbox_ch_names[i]);
 		if (IS_ERR(adsp_chan->ch)) {
 			ret = PTR_ERR(adsp_chan->ch);
 			if (ret != -EPROBE_DEFER)
-				dev_err(dev, "Failed to request mbox chan %d ret %d\n",
-					i, ret);
-			goto out_free;
-		}
+				dev_err(dev, "Failed to request mbox chan %s ret %d\n",
+					adsp_mbox_ch_names[i], ret);
+
+			for (j = 0; j < i; j++) {
+				adsp_chan = &adsp_ipc->chans[j];
+				mbox_free_channel(adsp_chan->ch);
+			}
 
-		dev_dbg(dev, "request mbox chan %s\n", chan_name);
-		kfree(chan_name);
+			return ret;
+		}
 	}
 
 	adsp_ipc->dev = dev;
@@ -117,16 +115,6 @@ static int mtk_adsp_ipc_probe(struct platform_device *pdev)
 	dev_dbg(dev, "MTK ADSP IPC initialized\n");
 
 	return 0;
-
-out_free:
-	kfree(chan_name);
-out:
-	for (j = 0; j < i; j++) {
-		adsp_chan = &adsp_ipc->chans[j];
-		mbox_free_channel(adsp_chan->ch);
-	}
-
-	return ret;
 }
 
 static int mtk_adsp_ipc_remove(struct platform_device *pdev)
-- 
2.18.0