powerpc/boot: Add PROM_ERROR define in oflib
This is mostly useful to make to the boot wrapper code closer with
the kernel code in prom_init.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/boot/of.h b/arch/powerpc/boot/of.h
index 40d95bf..0f058ef 100644
--- a/arch/powerpc/boot/of.h
+++ b/arch/powerpc/boot/of.h
@@ -23,4 +23,6 @@
#define cpu_to_be32(x) (x)
#define be32_to_cpu(x) (x)
+#define PROM_ERROR (-1u)
+
#endif /* _PPC_BOOT_OF_H_ */
diff --git a/arch/powerpc/boot/oflib.c b/arch/powerpc/boot/oflib.c
index 0f72b1a..7f61f2e 100644
--- a/arch/powerpc/boot/oflib.c
+++ b/arch/powerpc/boot/oflib.c
@@ -55,7 +55,7 @@
args.args[nargs+i] = 0;
if (prom(&args) < 0)
- return -1;
+ return PROM_ERROR;
return (nret > 0) ? be32_to_cpu(args.args[nargs]) : 0;
}
@@ -80,9 +80,9 @@
args.args[nargs+i] = 0;
if (prom(&args) < 0)
- return -1;
+ return PROM_ERROR;
- if (rets != (void *) 0)
+ if (rets != NULL)
for (i = 1; i < nret; ++i)
rets[i-1] = be32_to_cpu(args.args[nargs+i]);