MIPS: Support for 64-bit FP with O32 binaries

[firefly-linux-kernel-4.4.55.git] / arch / mips / kernel / signal.c

diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index 2f285abc76d5b9be1e68920bdbe962b5c6c6d11f..5199563c4403a5bb0cebbeaf85bb2aeca8b1b8c2 100644 (file)
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -71,8 +71,9 @@ static int protected_save_fp_context(struct sigcontext __user *sc)
        int err;
        while (1) {
                lock_fpu_owner();
-               own_fpu_inatomic(1);
-               err = save_fp_context(sc); /* this might fail */
+               err = own_fpu_inatomic(1);
+               if (!err)
+                       err = save_fp_context(sc); /* this might fail */
                unlock_fpu_owner();
                if (likely(!err))
                        break;
@@ -91,8 +92,9 @@ static int protected_restore_fp_context(struct sigcontext __user *sc)
        int err, tmp __maybe_unused;
        while (1) {
                lock_fpu_owner();
-               own_fpu_inatomic(0);
-               err = restore_fp_context(sc); /* this might fail */
+               err = own_fpu_inatomic(0);
+               if (!err)
+                       err = restore_fp_context(sc); /* this might fail */
                unlock_fpu_owner();
                if (likely(!err))
                        break;