drm/i915: Replace struct_mutex in intel_guc_log

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Remove the use of struct_mutex from intel_guc_log.c and replace it with
a dedicated lock, guc_lock, defined within the intel_guc_log struct.
    
The struct_mutex was previously used to protect concurrent access and
modification of intel_guc_log->level in intel_guc_log_set_level().
However, it was suggested that the lock should reside within the
intel_guc_log struct itself.
    
Initialize the new guc_lock in intel_guc_log_init_early(), alongside the
existing relay.lock. The lock is initialized using drmm_mutex_init(),
which also ensures it is properly destroyed when the driver is unloaded.

Signed-off-by: Luiz Otavio Mello <luiz.mello@estudante.ufscar.br>
Suggested-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20250908131518.36625-5-luiz.mello@estudante.ufscar.br
Acked-by: Tvrtko Ursulin <tursulin@ursulin.net>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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Luiz Otavio Mello 2025-09-08 09:15:12 -04:00 • committed by Rodrigo Vivi

parent 1bafff0252

commit 1bd3db82e9

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2 changed files with 11 additions and 2 deletions

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5

drivers/gpu/drm/i915/gt/uc/intel_guc_log.c

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8

drivers/gpu/drm/i915/gt/uc/intel_guc_log.h

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