diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2022-09-13 19:31:43 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-09-19 18:34:42 +0200 |
| commit | f4c6752df92af2d4d67bcbdb259b4b387109477c (patch) | |
| tree | 26e2fd9ba4ff00995caa5c59e11932bf19691e6b /drivers/i2c | |
| parent | 197a5aeaf6cd475720ca2f6ff1e4ed720da8657f (diff) | |
| download | linux-f4c6752df92af2d4d67bcbdb259b4b387109477c.tar.bz2 | |
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 <andriy.shevchenko@linux.intel.com>
Acked-by: Wolfram Sang <wsa@kernel.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-amd-mp2-plat.c | 27 |
1 files changed, 9 insertions, 18 deletions
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); |