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linux/drivers/platform
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Alok Tiwari 33713f7cda platform/mellanox: mlxreg-lc: Fix logic error in power state check 
[ Upstream commit 644bec18e7 ]

Fixes a logic issue in mlxreg_lc_completion_notify() where the
intention was to check if MLXREG_LC_POWERED flag is not set before
powering on the device.

The original code used "state & ~MLXREG_LC_POWERED" to check for the
absence of the POWERED bit. However this condition evaluates to true
even when other bits are set, leading to potentially incorrect
behavior.

Corrected the logic to explicitly check for the absence of
MLXREG_LC_POWERED using !(state & MLXREG_LC_POWERED).

Fixes: 62f9529b8d ("platform/mellanox: mlxreg-lc: Add initial support for Nvidia line card devices")
Suggested-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Link: https://lore.kernel.org/r/20250630105812.601014-1-alok.a.tiwari@oracle.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-07-10 16:03:10 +02:00
..
chrome platform/chrome: cros_ec_typec: fix missing fwnode reference decrement 2024-12-09 10:32:48 +01:00
goldfish platform: goldfish: pipe: Use platform_get_irq() to get the interrupt 2022-03-18 13:55:21 +01:00
loongarch platform/loongarch: laptop: Add backlight power control support 2025-06-27 11:09:03 +01:00
mellanox platform/mellanox: mlxreg-lc: Fix logic error in power state check 2025-07-10 16:03:10 +02:00
mips platform: mips: cpu_hwmon: Disable driver on unsupported hardware 2024-08-03 08:54:30 +02:00
olpc platform/olpc: olpc-xo175-ec: Use SPI device ID data to bind device 2023-03-20 14:43:35 +01:00
surface platform/surface: aggregator_registry: Add support for Surface Laptop Go 3 2024-09-18 19:24:06 +02:00
x86 platform/x86: dell-wmi-sysman: Fix class device unregistration 2025-07-10 16:03:10 +02:00
Kconfig platform/mips: Adjust Kconfig to keep consistency 2022-12-08 11:51:52 +01:00
Makefile LoongArch: Add ACPI-based generic laptop driver 2022-10-12 16:36:20 +08:00