Blackfin arch: Update some inline assembly, tweak some register constraints

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/blackfin/include/asm/bfrom.h b/arch/blackfin/include/asm/bfrom.h
index cfe8024c3b2f..9e4be5e5e767 100644
--- a/arch/blackfin/include/asm/bfrom.h
+++ b/arch/blackfin/include/asm/bfrom.h
@@ -43,6 +43,11 @@ __attribute__((__noreturn__))
 static inline void bfrom_SoftReset(void *new_stack)
 {
         while (1)
+                /*
+                 * We don't declare the SP as clobbered on purpose, since
+                 * it confuses the heck out of the compiler, and this function
+                 * never returns
+                 */
                 __asm__ __volatile__(
                         "sp = %[stack];"
                         "jump (%[bfrom_syscontrol]);"