From f4c6752df92af2d4d67bcbdb259b4b387109477c Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 13 Sep 2022 19:31:43 +0300 Subject: i2c: amd-mp2-plat: Refactor _UID handling to use acpi_dev_uid_to_integer() ACPI utils provide acpi_dev_uid_to_integer() helper to extract _UID as an integer. Use it instead of custom approach. Signed-off-by: Andy Shevchenko Acked-by: Wolfram Sang Reviewed-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- drivers/i2c/busses/i2c-amd-mp2-plat.c | 27 +++++++++------------------ 1 file changed, 9 insertions(+), 18 deletions(-) (limited to 'drivers/i2c') diff --git a/drivers/i2c/busses/i2c-amd-mp2-plat.c b/drivers/i2c/busses/i2c-amd-mp2-plat.c index 84b7e6cbc67b..423fe0c8a471 100644 --- a/drivers/i2c/busses/i2c-amd-mp2-plat.c +++ b/drivers/i2c/busses/i2c-amd-mp2-plat.c @@ -244,14 +244,18 @@ static const struct i2c_adapter_quirks amd_i2c_dev_quirks = { static int i2c_amd_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; int ret; struct amd_i2c_dev *i2c_dev; - struct acpi_device *adev = ACPI_COMPANION(&pdev->dev); struct amd_mp2_dev *mp2_dev; - const char *uid; + u64 uid; - if (!adev) - return -ENODEV; + ret = acpi_dev_uid_to_integer(ACPI_COMPANION(dev), &uid); + if (ret) + return dev_err_probe(dev, ret, "missing UID/bus id!\n"); + if (uid >= 2) + return dev_err_probe(dev, -EINVAL, "incorrect UID/bus id \"%llu\"!\n", uid); + dev_dbg(dev, "bus id is %llu\n", uid); /* The ACPI namespace doesn't contain information about which MP2 PCI * device an AMDI0011 ACPI device is related to, so assume that there's @@ -266,6 +270,7 @@ static int i2c_amd_probe(struct platform_device *pdev) if (!i2c_dev) return -ENOMEM; + i2c_dev->common.bus_id = uid; i2c_dev->common.mp2_dev = mp2_dev; i2c_dev->pdev = pdev; platform_set_drvdata(pdev, i2c_dev); @@ -276,20 +281,6 @@ static int i2c_amd_probe(struct platform_device *pdev) i2c_dev->common.resume = &i2c_amd_resume; #endif - uid = adev->pnp.unique_id; - if (!uid) { - dev_err(&pdev->dev, "missing UID/bus id!\n"); - return -EINVAL; - } else if (strcmp(uid, "0") == 0) { - i2c_dev->common.bus_id = 0; - } else if (strcmp(uid, "1") == 0) { - i2c_dev->common.bus_id = 1; - } else { - dev_err(&pdev->dev, "incorrect UID/bus id \"%s\"!\n", uid); - return -EINVAL; - } - dev_dbg(&pdev->dev, "bus id is %u\n", i2c_dev->common.bus_id); - /* Register the adapter */ amd_mp2_pm_runtime_get(mp2_dev); -- cgit v1.2.3 From 3ddaf13982a06d57347052f1fc386f70ef5b086f Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 13 Sep 2022 19:31:44 +0300 Subject: i2c: mlxbf: Refactor _UID handling to use acpi_dev_uid_to_integer() ACPI utils provide acpi_dev_uid_to_integer() helper to extract _UID as an integer. Use it instead of custom approach. Signed-off-by: Andy Shevchenko Acked-by: Wolfram Sang Reviewed-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- drivers/i2c/busses/i2c-mlxbf.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) (limited to 'drivers/i2c') diff --git a/drivers/i2c/busses/i2c-mlxbf.c b/drivers/i2c/busses/i2c-mlxbf.c index 8716032f030a..32235c62f3d2 100644 --- a/drivers/i2c/busses/i2c-mlxbf.c +++ b/drivers/i2c/busses/i2c-mlxbf.c @@ -2229,35 +2229,27 @@ MODULE_DEVICE_TABLE(acpi, mlxbf_i2c_acpi_ids); static int mlxbf_i2c_acpi_probe(struct device *dev, struct mlxbf_i2c_priv *priv) { const struct acpi_device_id *aid; - struct acpi_device *adev; - unsigned long bus_id = 0; - const char *uid; + u64 bus_id; int ret; if (acpi_disabled) return -ENOENT; - adev = ACPI_COMPANION(dev); - if (!adev) - return -ENXIO; - aid = acpi_match_device(mlxbf_i2c_acpi_ids, dev); if (!aid) return -ENODEV; priv->chip = (struct mlxbf_i2c_chip_info *)aid->driver_data; - uid = acpi_device_uid(adev); - if (!uid || !(*uid)) { + ret = acpi_dev_uid_to_integer(ACPI_COMPANION(dev), &bus_id); + if (ret) { dev_err(dev, "Cannot retrieve UID\n"); - return -ENODEV; + return ret; } - ret = kstrtoul(uid, 0, &bus_id); - if (!ret) - priv->bus = bus_id; + priv->bus = bus_id; - return ret; + return 0; } #else static int mlxbf_i2c_acpi_probe(struct device *dev, struct mlxbf_i2c_priv *priv) -- cgit v1.2.3