diff options
| author | Abhishek Ojha <Abhishek.ojha@savoirfairelinux.com> | 2026-09-01 21:07:01 -0400 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2026-10-06 17:59:42 +0200 |
| commit | 28c2388ee24cdbefbcc458fa41ef7bffaaa1cc83 (patch) | |
| tree | 7a9e71844f2e1cc63a24b9acf0fc42e109e840a6 /arch/mn10300/include | |
| parent | 5a26d7d96a66a7fdfff4fbcb86035161033ad407 (diff) | |
regulator: ltc3676: don't read the write-only HRST and CLIRQ registers
HRST (0x1e) and CLIRQ (0x1f) are write-only command strobes. Writing HRST
triggers a hard reset of the chip and writing CLIRQ clears the interrupt;
reading them returns nothing useful, and the read itself fires the command.
The result is that a plain register dump resets the board:
cat /sys/kernel/debug/regmap/2-003c/registers
walks every readable register, hits HRST, and the board reboots.
Split the callback back in two so HRST and CLIRQ stay writable but are no
longer readable. The readable range is left unchanged
(LTC3676_BUCK1 ... LTC3676_IRQSTAT).
Fixes: 37b918a034fe ("regulator: Add LTC3676 support")
Cc: stable@vger.kernel.org
Signed-off-by: Abhishek Ojha <Abhishek.ojha@savoirfairelinux.com>
Link: https://patch.msgid.link/20260902010701.3360310-1-Abhishek.ojha@savoirfairelinux.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'arch/mn10300/include')
0 files changed, 0 insertions, 0 deletions
