Paulus, resent with better description. Please apply.
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 <redacted>
Index: working-2.6/include/asm-powerpc/dcr-native.h
===================================================================--- working-2.6.orig/include/asm-powerpc/dcr-native.h 2007-02-09 13:59:07.000000000 +1100
+++ working-2.6/include/asm-powerpc/dcr-native.h 2007-02-09 13:59:36.000000000 +1100
@@ -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)
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson