linux-kernel - [PATCH AUTOSEL 4.19 02/11] soc: mediatek: Let PMIC Wrapper and SCPSYS depend on OF

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Message-Id: <20221011145358.1624959-2-sashal@kernel.org>
Date:   Tue, 11 Oct 2022 10:53:49 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Jean Delvare <jdelvare@...e.de>, kernel test robot <lkp@...el.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Chenglin Xu <chenglin.xu@...iatek.com>,
        Sasha Levin <sashal@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: [PATCH AUTOSEL 4.19 02/11] soc: mediatek: Let PMIC Wrapper and SCPSYS depend on OF

From: Jean Delvare <jdelvare@...e.de>

[ Upstream commit 2778caedb5667239823a29148dfc48b26a8b3c2a ]

With the following configuration options:
CONFIG_OF is not set
CONFIG_MTK_PMIC_WRAP=y
CONFIG_MTK_SCPSYS=y
we get the following build warnings:

  CC      drivers/soc/mediatek/mtk-pmic-wrap.o
drivers/soc/mediatek/mtk-pmic-wrap.c:2138:34: warning: ‘of_pwrap_match_tbl’ defined but not used [-Wunused-const-variable=]
drivers/soc/mediatek/mtk-pmic-wrap.c:1953:34: warning: ‘of_slave_match_tbl’ defined but not used [-Wunused-const-variable=]
  CC      drivers/soc/mediatek/mtk-scpsys.o
drivers/soc/mediatek/mtk-scpsys.c:1084:34: warning: ‘of_scpsys_match_tbl’ defined but not used [-Wunused-const-variable=]

Looking at the code, both drivers can only bind to OF-defined device
nodes, so these drivers are useless without OF and should therefore
depend on it.

Also drop of_match_ptr() from both drivers. We already know what it
will resolve to, so we might as well save cpp some work.

Developers or QA teams who wish to test-build the code can still do
so by enabling CONFIG_OF, which is available on all architectures and
has no dependencies.

Signed-off-by: Jean Delvare <jdelvare@...e.de>
Reported-by: kernel test robot <lkp@...el.com>
Link: https://lore.kernel.org/all/202207240252.ZY5hSCNB-lkp@intel.com/
Cc: Matthias Brugger <matthias.bgg@...il.com>
Cc: Chenglin Xu <chenglin.xu@...iatek.com>
Link: https://lore.kernel.org/r/20220730144833.0a0d9825@endymion.delvare
Signed-off-by: Matthias Brugger <matthias.bgg@...il.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/soc/mediatek/Kconfig         | 2 ++
 drivers/soc/mediatek/mtk-pmic-wrap.c | 2 +-
 drivers/soc/mediatek/mtk-scpsys.c    | 2 +-
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig
index a7d0667338f2..2bb92efd01a8 100644
--- a/drivers/soc/mediatek/Kconfig
+++ b/drivers/soc/mediatek/Kconfig
@@ -15,6 +15,7 @@ config MTK_INFRACFG
 config MTK_PMIC_WRAP
 	tristate "MediaTek PMIC Wrapper Support"
 	depends on RESET_CONTROLLER
+	depends on OF
 	select REGMAP
 	help
 	  Say yes here to add support for MediaTek PMIC Wrapper found
@@ -24,6 +25,7 @@ config MTK_PMIC_WRAP
 config MTK_SCPSYS
 	bool "MediaTek SCPSYS Support"
 	default ARCH_MEDIATEK
+	depends on OF
 	select REGMAP
 	select MTK_INFRACFG
 	select PM_GENERIC_DOMAINS if PM
diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index 011a40b5fb49..0e7dc2f01296 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -1672,7 +1672,7 @@ static int pwrap_probe(struct platform_device *pdev)
 static struct platform_driver pwrap_drv = {
 	.driver = {
 		.name = "mt-pmic-pwrap",
-		.of_match_table = of_match_ptr(of_pwrap_match_tbl),
+		.of_match_table = of_pwrap_match_tbl,
 	},
 	.probe = pwrap_probe,
 };
diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
index ef54f1638d20..06543e41d015 100644
--- a/drivers/soc/mediatek/mtk-scpsys.c
+++ b/drivers/soc/mediatek/mtk-scpsys.c
@@ -1071,7 +1071,7 @@ static struct platform_driver scpsys_drv = {
 		.name = "mtk-scpsys",
 		.suppress_bind_attrs = true,
 		.owner = THIS_MODULE,
-		.of_match_table = of_match_ptr(of_scpsys_match_tbl),
+		.of_match_table = of_scpsys_match_tbl,
 	},
 };
 builtin_platform_driver(scpsys_drv);
-- 
2.35.1