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author | Christoph Hellwig <hch@lst.de> | 2023-10-17 16:04:42 +0200 |
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committer | Christoph Hellwig <hch@lst.de> | 2023-10-22 16:38:54 +0200 |
commit | 9e28bf8bdf2177a88bd6648fc741bc0280e08af8 (patch) | |
tree | 48d0dcc3c9d4d37994651d2a78bdc076a4c1f1cd /drivers/net/ethernet/freescale | |
parent | 63f067e33c996a6e4d9a34d138116a43105182f1 (diff) |
m68k: use the coherent DMA code for coldfire without data cache
Coldfire cores configured without a data cache are DMA coherent and
should thus simply use the simple coherent version of dma-direct.
Introduce a new COLDFIRE_COHERENT_DMA Kconfig symbol as a convenient
short hand for such configurations, and a M68K_NONCOHERENT_DMA symbol
for all cases where we need to build non-coherent DMA infrastructure
to simplify the Kconfig and code conditionals.
Not building the non-coherent DMA code slightly reduces the code
size for such configurations.
Numers for m5249evb_defconfig below:
text data bss dec hex filename
2896158 401052 65392 3362602 334f2a vmlinux.before
2895166 400988 65392 3361546 334b0a vmlinux.after
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Greg Ungerer <gerg@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Greg Ungerer <gerg@linux-m68k.org>
Diffstat (limited to 'drivers/net/ethernet/freescale')
0 files changed, 0 insertions, 0 deletions