Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / arch / parisc / include / asm / uaccess.h

diff --git a/kernel/arch/parisc/include/asm/uaccess.h b/kernel/arch/parisc/include/asm/uaccess.h
index 0abdd4c..4ad5146 100644 (file)
--- a/kernel/arch/parisc/include/asm/uaccess.h
+++ b/kernel/arch/parisc/include/asm/uaccess.h
@@ -10,6 +10,7 @@
 #include <asm-generic/uaccess-unaligned.h>
 
 #include <linux/bug.h>
+#include <linux/string.h>
 
 #define VERIFY_READ 0
 #define VERIFY_WRITE 1
@@ -76,6 +77,7 @@ struct exception_table_entry {
  */
 struct exception_data {
        unsigned long fault_ip;
+       unsigned long fault_gp;
        unsigned long fault_space;
        unsigned long fault_addr;
 };
@@ -244,13 +246,14 @@ static inline unsigned long __must_check copy_from_user(void *to,
                                           unsigned long n)
 {
         int sz = __compiletime_object_size(to);
-        int ret = -EFAULT;
+        unsigned long ret = n;
 
         if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n))
                 ret = __copy_from_user(to, from, n);
         else
                 copy_from_user_overflow();
-
+       if (unlikely(ret))
+               memset(to + (n - ret), 0, ret);
         return ret;
 }