Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...

[pandora-kernel.git] / arch / arm / vfp / vfpmodule.c

diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index 2476f4c..a657a28 100644 (file)
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -9,7 +9,6 @@
  * published by the Free Software Foundation.
  */
 #include <linux/module.h>
-#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/signal.h>
@@ -41,10 +40,19 @@ unsigned int VFP_arch;
 static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v)
 {
        struct thread_info *thread = v;
-       union vfp_state *vfp = &thread->vfpstate;
+       union vfp_state *vfp;
 
-       switch (cmd) {
-       case THREAD_NOTIFY_FLUSH:
+       if (likely(cmd == THREAD_NOTIFY_SWITCH)) {
+               /*
+                * Always disable VFP so we can lazily save/restore the
+                * old state.
+                */
+               fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_ENABLE);
+               return NOTIFY_DONE;
+       }
+
+       vfp = &thread->vfpstate;
+       if (cmd == THREAD_NOTIFY_FLUSH) {
                /*
                 * Per-thread VFP initialisation.
                 */
@@ -57,29 +65,12 @@ static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v)
                 * Disable VFP to ensure we initialise it first.
                 */
                fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_ENABLE);
-
-               /*
-                * FALLTHROUGH: Ensure we don't try to overwrite our newly
-                * initialised state information on the first fault.
-                */
-
-       case THREAD_NOTIFY_RELEASE:
-               /*
-                * Per-thread VFP cleanup.
-                */
-               if (last_VFP_context == vfp)
-                       last_VFP_context = NULL;
-               break;
-
-       case THREAD_NOTIFY_SWITCH:
-               /*
-                * Always disable VFP so we can lazily save/restore the
-                * old state.
-                */
-               fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_ENABLE);
-               break;
        }
 
+       /* flush and release case: Per-thread VFP cleanup. */
+       if (last_VFP_context == vfp)
+               last_VFP_context = NULL;
+
        return NOTIFY_DONE;
 }
 
@@ -99,7 +90,7 @@ void vfp_raise_sigfpe(unsigned int sicode, struct pt_regs *regs)
 
        info.si_signo = SIGFPE;
        info.si_code = sicode;
-       info.si_addr = (void *)(instruction_pointer(regs) - 4);
+       info.si_addr = (void __user *)(instruction_pointer(regs) - 4);
 
        /*
         * This is the same as NWFPE, because it's not clear what
@@ -132,7 +123,7 @@ static void vfp_raise_exceptions(u32 exceptions, u32 inst, u32 fpscr, struct pt_
 
        pr_debug("VFP: raising exceptions %08x\n", exceptions);
 
-       if (exceptions == (u32)-1) {
+       if (exceptions == VFP_EXCEPTION_ERROR) {
                vfp_panic("unhandled bounce");
                vfp_raise_sigfpe(0, regs);
                return;
@@ -171,7 +162,7 @@ static void vfp_raise_exceptions(u32 exceptions, u32 inst, u32 fpscr, struct pt_
  */
 static u32 vfp_emulate_instruction(u32 inst, u32 fpscr, struct pt_regs *regs)
 {
-       u32 exceptions = (u32)-1;
+       u32 exceptions = VFP_EXCEPTION_ERROR;
 
        pr_debug("VFP: emulate: INST=0x%08x SCR=0x%08x\n", inst, fpscr);