linux-kernel - [PATCH v2] soc: mediatek: cmdq: Don't log an error when gce-client-reg is not found

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Message-Id: <20240229-gce-client-reg-log-dbg-v2-1-4975077173d0@collabora.com>
Date: Thu, 29 Feb 2024 14:51:08 -0500
From: Nícolas F. R. A. Prado <nfraprado@...labora.com>
To: Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: kernel@...labora.com, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, 
 Nícolas F. R. A. Prado <nfraprado@...labora.com>
Subject: [PATCH v2] soc: mediatek: cmdq: Don't log an error when
 gce-client-reg is not found

Most of the callers to this function do not require CMDQ support, it is
optional, so the missing property shouldn't cause an error message.
However, it could result on degraded performance, so the fact that it's
missing should still be alerted. Furthermore, the callers that do
require CMDQ support already log at the error level when an error is
returned.

Change the log message in this helper to be printed at the warning level
instead.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
---
Changes in v2:
- Changed from debug to warning level
- Tweaked commit message to mention performance penalty of not having
  GCE
- Link to v1: https://lore.kernel.org/r/20240226-gce-client-reg-log-dbg-v1-1-f0fff97c30c7@collabora.com
---
 drivers/soc/mediatek/mtk-cmdq-helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index b0cd071c4719..943e9055dd1f 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -55,7 +55,7 @@ int cmdq_dev_get_client_reg(struct device *dev,
 					       "mediatek,gce-client-reg",
 					       3, idx, &spec);
 	if (err < 0) {
-		dev_err(dev,
+		dev_warn(dev,
 			"error %d can't parse gce-client-reg property (%d)",
 			err, idx);

---
base-commit: 41913bcddc83b131649ee8ff0d9ff29e01731398
change-id: 20240226-gce-client-reg-log-dbg-5ae9637a08ed

Best regards,
-- 
Nícolas F. R. A. Prado <nfraprado@...labora.com>