[ARM] 3853/1: Fix flush_ptrace_access() thinko for nonaliasing VIPT cache case

Fix thinko in the flush_ptrace_access() "if (expr)" for the ARM
VIPT non-aliasing cache case.  We only need to flush cache when
VM_EXEC is set in vma->vm_flags but "if (expr) always evaluates
to true on UP systems for the ARM VIPT non-aliasing cache case.
Signed-off-by: NGeorge G. Davis <gdavis@mvista.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/flush.c

@@ -107,7 +107,7 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
 
 	/* VIPT non-aliasing cache */
 	if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask) &&
-	    vma->vm_flags | VM_EXEC) {
+	    vma->vm_flags & VM_EXEC) {
 		unsigned long addr = (unsigned long)kaddr;
 		/* only flushing the kernel mapping on non-aliasing VIPT */
 		__cpuc_coherent_kern_range(addr, addr + len);