[PARISC] Properly specify index field to I/D cache flush ops

replace use of "0" with "%r0" since PA 1.1 I/D flush ops only take a
general register and not an immediate value for the index field.
This just forces the code to always be PA 1.1 "clean".

From: Joel Soete <soete.joel@tiscali.be>
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

1 files changed, 7 insertions, 4 deletions

diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index befdfe700616..82c24e62ab63 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -625,11 +625,14 @@ do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall)
                         put_user(0xe0008200, &usp[3]);
                         put_user(0x34140000, &usp[4]);
 
-                        /* Stack is 64-byte aligned, and we only 
-                         * need to flush 1 cache line */
-                        asm("fdc 0(%%sr3, %0)\n"
+                        /* Stack is 64-byte aligned, and we only need
+                         * to flush 1 cache line.
+                         * Flushing one cacheline is cheap.
+                         * "sync" on bigger (> 4 way) boxes is not.
+                         */
+                        asm("fdc %%r0(%%sr3, %0)\n"
                             "sync\n"
-                            "fic 0(%%sr3, %0)\n"
+                            "fic %%r0(%%sr3, %0)\n"
                             "sync\n"
                             : : "r"(regs->gr[30]));