James Raphael Tiovalen a95c36f165 lib: sbi_pmu: Fix multiple FW counter start operations with custom PMU device ...

Currently, we immediately return the result of `fw_counter_start` if the
event code is 0xFFFF. However, this skips setting the bit in the
`fw_counters_started` bitmap even if the platform-specific call
succeeds. Restore the original behavior of returning early only on an
error so that we still set the bit in the bitmap. This prevents multiple
starts of the same FW counter. This also aligns the expectations of
`pmu_ctr_start_fw` with `pmu_ctr_stop_fw` since we cannot assume that
the platform-specific functions to start and stop FW counters will
modify the bitmap state.

Fixes: 57d3aa3b0d ("lib: sbi_pmu: Introduce fw_counter_write_value API")
Signed-off-by: James Raphael Tiovalen <jamestiotio@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260116165304.180441-1-jamestiotio@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>

2026-02-20 17:24:55 +05:30

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