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[POWERPC] More DCR native fixups

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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>
This commit is contained in:
David Gibson 2007-02-15 14:38:04 +11:00 committed by Paul Mackerras
parent 087d7ecd52
commit c91ef59861
1 changed files with 2 additions and 2 deletions
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4
include/asm-powerpc/dcr-native.h
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@ -26,8 +26,8 @@ typedef struct {} dcr_host_t;
#define DCR_MAP_OK(host) (1)
#define dcr_map(dev, dcr_n, dcr_c) {}
#define dcr_unmap(host, dcr_n, dcr_c) {}
#define dcr_map(dev, dcr_n, dcr_c) ((dcr_host_t){})
#define dcr_unmap(host, dcr_n, dcr_c) do {} while (0)
#define dcr_read(host, dcr_n) mfdcr(dcr_n)
#define dcr_write(host, dcr_n, value) mtdcr(dcr_n, value)