This is a note to let you know that I've just added the patch titled
[PATCH} hwmon: (jc42) Properly detect TSE2004-compliant devices again
to the 6.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
patch-hwmon-jc42-properly-detect-tse2004-compliant-d.patch
and it can be found in the queue-6.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 272a071a6f4d3ad9c018aa6b14fef93188864eda
Author: Jean Delvare <jdelvare@xxxxxxx>
Date: Mon Oct 14 22:04:26 2024 +0200
[PATCH} hwmon: (jc42) Properly detect TSE2004-compliant devices again
[ Upstream commit eabb03810194b75417b09cff8a526d26939736ac ]
Commit b3e992f69c23 ("hwmon: (jc42) Strengthen detect function")
attempted to make the detect function more robust for
TSE2004-compliant devices by checking capability bits which, according
to the JEDEC 21-C specification, should always be set. Unfortunately,
not all real-world implementations fully adhere to this specification,
so this change caused a regression.
Stop testing bit 7 (EVSD) of the Capabilities register, as it was
found to be 0 on one real-world device.
Also stop testing bits 0 (EVENT) and 2 (RANGE) as vendor datasheets
(Renesas TSE2004GB2B0, ST STTS2004) suggest that they may not always
be set either.
Signed-off-by: Jean Delvare <jdelvare@xxxxxxx>
Message-ID: <20241014141204.026f4641@endymion.delvare>
Fixes: b3e992f69c23 ("hwmon: (jc42) Strengthen detect function")
Message-ID: <20241014220426.0c8f4d9c@endymion.delvare>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/hwmon/jc42.c b/drivers/hwmon/jc42.c
index a260cff750a58..c459dce496a6e 100644
--- a/drivers/hwmon/jc42.c
+++ b/drivers/hwmon/jc42.c
@@ -417,7 +417,7 @@ static int jc42_detect(struct i2c_client *client, struct i2c_board_info *info)
return -ENODEV;
if ((devid & TSE2004_DEVID_MASK) == TSE2004_DEVID &&
- (cap & 0x00e7) != 0x00e7)
+ (cap & 0x0062) != 0x0062)
return -ENODEV;
for (i = 0; i < ARRAY_SIZE(jc42_chips); i++) {
