[PARISC] update parisc to use generic strncpy_from_user()
authorJames Bottomley <JBottomley@Parallels.com>
Sat, 26 May 2012 08:48:19 +0000 (09:48 +0100)
committerJames Bottomley <JBottomley@Parallels.com>
Thu, 31 May 2012 10:14:37 +0000 (11:14 +0100)
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
arch/parisc/Kconfig
arch/parisc/include/asm/uaccess.h
arch/parisc/kernel/parisc_ksyms.c
arch/parisc/lib/lusercopy.S

index ddb8b24b823d1c77881f80cc019570c537ea6c62..3ff21b536f28f6c1e84b06b665e6d7589579f6c9 100644 (file)
@@ -18,6 +18,7 @@ config PARISC
        select IRQ_PER_CPU
        select ARCH_HAVE_NMI_SAFE_CMPXCHG
        select GENERIC_SMP_IDLE_THREAD
+       select GENERIC_STRNCPY_FROM_USER
 
        help
          The PA-RISC microprocessor is designed by Hewlett-Packard and used
index 9ac066086f030fc4080ea24be0d557afd7c8aae8..4ba2c93770f1f47c83226dc97b6e25c89d9b0bd6 100644 (file)
@@ -218,15 +218,14 @@ struct exception_data {
 extern unsigned long lcopy_to_user(void __user *, const void *, unsigned long);
 extern unsigned long lcopy_from_user(void *, const void __user *, unsigned long);
 extern unsigned long lcopy_in_user(void __user *, const void __user *, unsigned long);
-extern long lstrncpy_from_user(char *, const char __user *, long);
+extern long strncpy_from_user(char *, const char __user *, long);
 extern unsigned lclear_user(void __user *,unsigned long);
 extern long lstrnlen_user(const char __user *,long);
-
 /*
  * Complex access routines -- macros
  */
+#define user_addr_max() (~0UL)
 
-#define strncpy_from_user lstrncpy_from_user
 #define strnlen_user lstrnlen_user
 #define strlen_user(str) lstrnlen_user(str, 0x7fffffffL)
 #define clear_user lclear_user
index a7bb757a5497137d894518d1dc9d252cb845bb49..ceec85de62904a1892c0fb30eca7eb034e627e53 100644 (file)
@@ -44,7 +44,6 @@ EXPORT_SYMBOL(__cmpxchg_u64);
 #endif
 
 #include <asm/uaccess.h>
-EXPORT_SYMBOL(lstrncpy_from_user);
 EXPORT_SYMBOL(lclear_user);
 EXPORT_SYMBOL(lstrnlen_user);
 
index 1bd23ccec17b9a53fb838fdfdf5eb9ab62ccf739..6f2d9355efe25af6ab90d4205a216c1c649c39a9 100644 (file)
        bv          %r0(%r1)
        .endm
 
-       /*
-        * long lstrncpy_from_user(char *dst, const char *src, long n)
-        *
-        * Returns -EFAULT if exception before terminator,
-        *         N if the entire buffer filled,
-        *         otherwise strlen (i.e. excludes zero byte)
-        */
-
-ENTRY(lstrncpy_from_user)
-       .proc
-       .callinfo NO_CALLS
-       .entry
-       comib,=     0,%r24,$lsfu_done
-       copy        %r24,%r23
-       get_sr
-1:      ldbs,ma     1(%sr1,%r25),%r1
-$lsfu_loop:
-       stbs,ma     %r1,1(%r26)
-       comib,=,n   0,%r1,$lsfu_done
-       addib,<>,n  -1,%r24,$lsfu_loop
-2:      ldbs,ma     1(%sr1,%r25),%r1
-$lsfu_done:
-       sub         %r23,%r24,%r28
-$lsfu_exit:
-       bv          %r0(%r2)
-       nop
-       .exit
-ENDPROC(lstrncpy_from_user)
-
-       .section .fixup,"ax"
-3:      fixup_branch $lsfu_exit
-       ldi         -EFAULT,%r28
-       .previous
-
-       .section __ex_table,"aw"
-       ASM_ULONG_INSN 1b,3b
-       ASM_ULONG_INSN 2b,3b
-       .previous
-
-       .procend
-
        /*
         * unsigned long lclear_user(void *to, unsigned long n)
         *