linux-kernel - [PATCH v4 1/3] i2c: designware: Initialize adapter name only when not set

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Message-ID: <20250609155601.1477055-2-pratap.nirujogi@amd.com>
Date: Mon, 9 Jun 2025 11:53:55 -0400
From: Pratap Nirujogi <pratap.nirujogi@....com>
To: <andi.shyti@...nel.org>, <ilpo.jarvinen@...ux.intel.com>,
	<rdunlap@...radead.org>, <hdegoede@...hat.com>, <sfr@...b.auug.org.au>,
	<linux-next@...r.kernel.org>
CC: <linux-i2c@...r.kernel.org>, <platform-driver-x86@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <benjamin.chan@....com>, <bin.du@....com>,
	<gjorgji.rosikopulos@....com>, <king.li@....com>, <dantony@....com>, "Pratap
 Nirujogi" <pratap.nirujogi@....com>
Subject: [PATCH v4 1/3] i2c: designware: Initialize adapter name only when not set

Check if the adapter name is already set in the driver prior to
initializing with generic name in i2c_dw_probe_master(). This
check allows to retain the unique adapter name driver has
initialized, which platform driver can use to distinguish it
from other i2c designware adapters.

Tested-by: Randy Dunlap <rdunlap@...radead.org
Signed-off-by: Pratap Nirujogi <pratap.nirujogi@....com>
---
 drivers/i2c/busses/i2c-designware-master.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-designware-master.c b/drivers/i2c/busses/i2c-designware-master.c
index c5394229b77f..9d7d9e47564a 100644
--- a/drivers/i2c/busses/i2c-designware-master.c
+++ b/drivers/i2c/busses/i2c-designware-master.c
@@ -1042,8 +1042,9 @@ int i2c_dw_probe_master(struct dw_i2c_dev *dev)
 	if (ret)
 		return ret;
 
-	snprintf(adap->name, sizeof(adap->name),
-		 "Synopsys DesignWare I2C adapter");
+	if (!adap->name[0])
+		scnprintf(adap->name, sizeof(adap->name),
+			  "Synopsys DesignWare I2C adapter");
 	adap->retries = 3;
 	adap->algo = &i2c_dw_algo;
 	adap->quirks = &i2c_dw_quirks;
-- 
2.43.0