linux-kernel - [PATCH 2/6] i2c: piix4: use i2c_adapter

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Message-Id: <20251223-i2c-adapter-dev-wrapper-v1-2-bcf960a48fa9@oss.qualcomm.com>
Date: Tue, 23 Dec 2025 11:08:19 +0100
From: Bartosz Golaszewski <bartosz.golaszewski@....qualcomm.com>
To: Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Jean Delvare <jdelvare@...e.com>, Andi Shyti <andi.shyti@...nel.org>,
        Shyam Sundar S K <shyam-sundar.s-k@....com>,
        Nirujogi Pratap <pratap.nirujogi@....com>, Bin Du <bin.du@....com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Jan Dabros <jsd@...ihalf.com>,
        Gregory CLEMENT <gregory.clement@...tlin.com>,
        Hans Hu <hanshu@...oxin.com>
Cc: Bartosz Golaszewski <brgl@...nel.org>, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@....qualcomm.com>
Subject: [PATCH 2/6] i2c: piix4: use i2c_adapter_dev()

Use i2c_adapter_dev() where applicable in order to avoid direct
dereferencing of struct device embedded within struct i2c_adapter.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@....qualcomm.com>
---
 drivers/i2c/busses/i2c-piix4.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index ac3bb550303fe5893822af50c385004c9292e695..4fe0c49284646a9f2910939c98b51ee6777e8b52 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -788,7 +788,7 @@ static s32 piix4_access_sb800(struct i2c_adapter *adap, u16 addr,
 	u8 prev_port;
 	int retval;
 
-	retval = piix4_sb800_region_request(&adap->dev, &adapdata->mmio_cfg);
+	retval = piix4_sb800_region_request(i2c_adapter_dev(adap), &adapdata->mmio_cfg);
 	if (retval)
 		return retval;
 
@@ -859,7 +859,7 @@ static s32 piix4_access_sb800(struct i2c_adapter *adap, u16 addr,
 		piix4_imc_wakeup();
 
 release:
-	piix4_sb800_region_release(&adap->dev, &adapdata->mmio_cfg);
+	piix4_sb800_region_release(i2c_adapter_dev(adap), &adapdata->mmio_cfg);
 	return retval;
 }
 
@@ -947,7 +947,7 @@ static int piix4_add_adapter(struct pci_dev *dev, unsigned short smba,
 	adap->dev.parent = &dev->dev;
 
 	if (has_acpi_companion(&dev->dev)) {
-		acpi_preset_companion(&adap->dev,
+		acpi_preset_companion(i2c_adapter_dev(adap),
 				      ACPI_COMPANION(&dev->dev),
 				      hw_port_nr);
 	}

-- 
2.47.3