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Message-Id: <20241105-tps25990-v4-2-0e312ac70b62@baylibre.com>
Date: Tue, 05 Nov 2024 18:58:39 +0100
From: Jerome Brunet <jbrunet@...libre.com>
To: Jean Delvare <jdelvare@...e.com>, Guenter Roeck <linux@...ck-us.net>,
Jonathan Corbet <corbet@....net>,
Patrick Rudolph <patrick.rudolph@...ements.com>,
Naresh Solanki <naresh.solanki@...ements.com>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Jerome Brunet <jbrunet@...libre.com>,
Delphine CC Chiu <Delphine_CC_Chiu@...ynn.com>
Cc: linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-doc@...r.kernel.org, devicetree@...r.kernel.org,
linux-i2c@...r.kernel.org
Subject: [PATCH v4 2/7] hwmon: (pmbus/core) allow drivers to override
WRITE_PROTECT
Use _pmbus_read_byte_data() rather than calling smbus directly to check
the write protection status. This give a chance to device implementing
write protection differently to report back on the actual write protection
status.
Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
---
drivers/hwmon/pmbus/pmbus_core.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index ce7fd4ca9d89b0f0a02e6c99db391a7cfca924a8..085a4dc91d9bad3d2aacdd946b74a094ea9ae458 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -2719,9 +2719,7 @@ static int pmbus_init_common(struct i2c_client *client, struct pmbus_data *data,
* limit registers need to be disabled.
*/
if (!(data->flags & PMBUS_NO_WRITE_PROTECT)) {
- pmbus_wait(client);
- ret = i2c_smbus_read_byte_data(client, PMBUS_WRITE_PROTECT);
- pmbus_update_ts(client, false);
+ ret = _pmbus_read_byte_data(client, 0xff, PMBUS_WRITE_PROTECT);
if (ret > 0 && (ret & PB_WP_ANY))
data->flags |= PMBUS_WRITE_PROTECTED | PMBUS_SKIP_STATUS_CHECK;
--
2.45.2
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