[PATCH v12 6/7] i2c: xiic: use numbered adapter registration
From: Abdurrahman Hussain via B4 Relay <devnull+abdurrahman.nexthop.ai@kernel.org>
Date: 2026-02-23 15:59:20
Also in:
b4-sent, linux-devicetree, linux-i2c, lkml
Subsystem:
arm/zynq architecture, i2c subsystem, i2c subsystem host drivers, the rest · Maintainers:
Michal Simek, Andi Shyti, Linus Torvalds
From: Abdurrahman Hussain <abdurrahman@nexthop.ai> 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. Reviewed-by: Andy Shevchenko <redacted> Signed-off-by: Abdurrahman Hussain <abdurrahman@nexthop.ai> --- drivers/i2c/busses/i2c-xiic.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c
index 80e183b6e4f1..6eb0c6a2618a 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;
--
2.52.0