linux-kernel - [PATCH 1/4] hwmon: (pmbus/lm25066) Let enum chips start with index 0

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Message-Id: <20240610181046.1991436-2-linux@roeck-us.net>
Date: Mon, 10 Jun 2024 11:10:43 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: linux-hwmon@...r.kernel.org
Cc: Rob Herring <robh@...nel.org>,
	linux-kernel@...r.kernel.org,
	Peter Yin <peteryin.openbmc@...il.com>,
	Potin Lai <potin.lai.pt@...il.com>,
	Daniel Matyas <daniel.matyas@...log.com>,
	Andrew Davis <afd@...com>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 1/4] hwmon: (pmbus/lm25066) Let enum chips start with index 0

Commit ac0c26bae662 ("hwmon: (lm25066) Use i2c_get_match_data()") changed
enum chips to start with 1 instead of 0, under the assumption that
the data pointer in of_device_id must not start with 0 (NULL) if
i2c_get_match_data() is used. However, that is perfectly fine as long as
there is also an i2c_device_id array with the same data which is used
as fallback in that case.

Let enum chips start with 0 to avoid confusion against other drivers
where the enum starts with 0 and i2c_get_match_data() is used as well.

Cc: Rob Herring <robh@...nel.org>
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 drivers/hwmon/pmbus/lm25066.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwmon/pmbus/lm25066.c b/drivers/hwmon/pmbus/lm25066.c
index cfffa4cdc0df..c36c124d1a2d 100644
--- a/drivers/hwmon/pmbus/lm25066.c
+++ b/drivers/hwmon/pmbus/lm25066.c
@@ -17,7 +17,7 @@
 #include <linux/of.h>
 #include "pmbus.h"

-enum chips { lm25056 = 1, lm25066, lm5064, lm5066, lm5066i };
+enum chips { lm25056, lm25066, lm5064, lm5066, lm5066i };

 #define LM25066_READ_VAUX		0xd0
 #define LM25066_MFR_READ_IIN		0xd1
-- 
2.39.2