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linux/drivers/platform
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Alok Tiwari 800a6bde38 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 16:04:50 +02:00
..
arm64 move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
chrome platform/chrome: cros_ec_lpc: Match on Framework ACPI device 2025-04-20 10:15:12 +02:00
cznic platform: cznic: CZNIC_PLATFORMS should depend on ARCH_MVEBU 2025-02-27 04:30:20 -08:00
goldfish platform/goldfish: goldfish_pipe: add missing MODULE_DESCRIPTION() macro 2024-07-03 16:40:46 +02:00
loongarch platform/loongarch: laptop: Add backlight power control support 2025-06-27 11:11:37 +01:00
mellanox platform/mellanox: mlxreg-lc: Fix logic error in power state check 2025-07-10 16:04:50 +02:00
mips platform: mips: cpu_hwmon: Disable driver on unsupported hardware 2024-06-21 10:22:10 +02:00
olpc platform-drivers-x86 for v6.12-1 2024-09-19 09:16:04 +02:00
surface move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
x86 platform/x86: dell-wmi-sysman: Fix class device unregistration 2025-07-10 16:04:50 +02:00
Kconfig platform: cznic: Add preliminary support for Turris Omnia MCU 2024-07-01 15:46:36 +02:00
Makefile platform-drivers-x86 for v6.11-1 2024-07-17 17:05:21 -07:00