ARM: 7419/1: vfp: fix VFP flushing regression on sigreturn path

[linux-flexiantxendom0-3.2.10.git] / arch / arm / vfp / vfpmodule.c

diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index c5767b5..b0197b2 100644 (file)
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -577,12 +577,6 @@ int vfp_preserve_user_clear_hwstate(struct user_vfp __user *ufp,
         * entry.
         */
        hwstate->fpscr &= ~(FPSCR_LENGTH_MASK | FPSCR_STRIDE_MASK);
-
-       /*
-        * Disable VFP in the hwstate so that we can detect if it gets
-        * used.
-        */
-       hwstate->fpexc &= ~FPEXC_EN;
        return 0;
 }
 
@@ -595,12 +589,8 @@ int vfp_restore_user_hwstate(struct user_vfp __user *ufp,
        unsigned long fpexc;
        int err = 0;
 
-       /*
-        * If VFP has been used, then disable it to avoid corrupting
-        * the new thread state.
-        */
-       if (hwstate->fpexc & FPEXC_EN)
-               vfp_flush_hwstate(thread);
+       /* Disable VFP to avoid corrupting the new thread state. */
+       vfp_flush_hwstate(thread);
 
        /*
         * Copy the floating point registers. There can be unused