[PARISC] fix signal trampoline cache flushing

The signal trampolines were accidently flushing the kernel I$ instead of
the users.  Fix that up, and also add a missing user D$ flush while
we're at it.

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index 58fccc96d003..06213d1d6d95 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -534,7 +534,8 @@ insert_restart_trampoline(struct pt_regs *regs)
                  * Flushing one cacheline is cheap.
                  * "sync" on bigger (> 4 way) boxes is not.
                  */
-                flush_icache_range(regs->gr[30], regs->gr[30] + 4);
+                flush_user_dcache_range(regs->gr[30], regs->gr[30] + 4);
+                flush_user_icache_range(regs->gr[30], regs->gr[30] + 4);
 
                 regs->gr[31] = regs->gr[30] + 8;
                 /* Preserve original r28. */