Re: [PATCH 2/2] powerpc32: add support for csum_add()

Christophe Leroy [off-list ref] wrote on 2014/09/19 15:57:56:

+#define HAVE_ARCH_CSUM_ADD
+static inline __wsum csum_add(__wsum csum, __wsum addend)
+{
+    __asm__("\n\
+   addc %0,%0,%1 \n\
+   addze %0,%0 \n\
+   "
+   : "=r" (csum)
+   : "r" (addend), "0"(csum));

hmm, I wonder if not this is better written as:
: "+r" (csum): "r" (addend))

  Jocke