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[POWERPC] More DCR native fixups
Getting BenH's new EMAC driver working on 440GP, I found some more problems in the native mode paths of the new DCR code: - dcr_map() is supposed to return a dcr_host_t, but the native version is a macro that doesn't expand to an expression. With native DCRs, dcr_host_t is an empty structure, so we just use a constructor expression instead. - dcr_unmap() uses {} instead of the safer do {} while (0) idiom to implement a no-op Here's a fix. Signed-off-by: David Gibson <dwg@au1.ibm.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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@ -26,8 +26,8 @@ typedef struct {} dcr_host_t;
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#define DCR_MAP_OK(host) (1)
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#define dcr_map(dev, dcr_n, dcr_c) {}
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#define dcr_unmap(host, dcr_n, dcr_c) {}
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#define dcr_map(dev, dcr_n, dcr_c) ((dcr_host_t){})
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#define dcr_unmap(host, dcr_n, dcr_c) do {} while (0)
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#define dcr_read(host, dcr_n) mfdcr(dcr_n)
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#define dcr_write(host, dcr_n, value) mtdcr(dcr_n, value)
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