From: Abdurrahman Hussain Date: Mon, 23 Feb 2026 15:59:21 +0000 (+0000) Subject: i2c: xiic: use numbered adapter registration X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=91430a8ea9cebbe47c1723871492d5c135faf999;p=thirdparty%2Flinux.git i2c: xiic: use numbered adapter registration Switch from i2c_add_adapter() to i2c_add_numbered_adapter() to enable platforms to specify fixed I2C bus numbers via the platform device ID. This allows systems to maintain consistent bus numbering across reboots. On platforms where the device ID is PLATFORM_DEVID_NONE (the default), the adapter falls back to dynamic allocation, preserving backward compatibility. Signed-off-by: Abdurrahman Hussain Reviewed-by: Andy Shevchenko Signed-off-by: Andi Shyti Link: https://lore.kernel.org/r/20260223-i2c-xiic-v12-6-b6c9ce4e4f3c@nexthop.ai --- diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c index 80e183b6e4f17..6eb0c6a2618a9 100644 --- a/drivers/i2c/busses/i2c-xiic.c +++ b/drivers/i2c/busses/i2c-xiic.c @@ -1451,6 +1451,7 @@ static int xiic_i2c_probe(struct platform_device *pdev) /* hook up driver to tree */ platform_set_drvdata(pdev, i2c); i2c->adap = xiic_adapter; + i2c->adap.nr = pdev->id; i2c_set_adapdata(&i2c->adap, i2c); i2c->adap.dev.parent = &pdev->dev; device_set_node(&i2c->adap.dev, fwnode); @@ -1507,7 +1508,7 @@ static int xiic_i2c_probe(struct platform_device *pdev) return dev_err_probe(dev, ret, "Cannot xiic_reinit\n"); /* add i2c adapter to i2c tree */ - ret = i2c_add_adapter(&i2c->adap); + ret = i2c_add_numbered_adapter(&i2c->adap); if (ret) { xiic_deinit(i2c); return ret;