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Differential D56244

powerpc: refactor dmamap setup; free dmamap in error paths
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Authored by adrian on Apr 3 2026, 4:26 PM.
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PowerPC
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rG0de6295af231: powerpc: refactor dmamap setup; free dmamap in error paths
Summary
  • refactor the dmamap allocation / setup path for future code changes to align with arm64 busdma code;
  • free the dmamap allocation if the dma segment list can't be allocated;
  • free the dmamap allocation during the busdma dmamem allocation path if the actual memory allocation itself fails.

Locally tested:

  • POWER9 ppc64le native boot, Raptor Engineering Blackbird
  • POWER8 ppc6le, IBM POWER S822LC

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Repository
rG FreeBSD src repository
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Buildable 72682
Build 69565: arc lint + arc unit

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PathSize
sys/
powerpc/
powerpc/
48 lines

Diff 176918

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sys/powerpc/powerpc/busdma_bounce.c

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