From: Randy Dunlap <rdun...@infradead.org>
arch/microblaze/ is missing support for get_user() of size 8 bytes,
so add it by using __copy_from_user().
Fixes these build errors:
drivers/infiniband/core/uverbs_main.o: In function `ib_uverbs_write':
drivers/infiniband/core/.tmp_gl_uverbs_main.o:(.text+0x13a4): undefined
reference to `__user_bad'
drivers/android/binder.o: In function `binder_thread_write':
drivers/android/.tmp_gl_binder.o:(.text+0xda6c): undefined reference to
`__user_bad'
drivers/android/.tmp_gl_binder.o:(.text+0xda98): undefined reference to
`__user_bad'
drivers/android/.tmp_gl_binder.o:(.text+0xdf10): undefined reference to
`__user_bad'
drivers/android/.tmp_gl_binder.o:(.text+0xe498): undefined reference to
`__user_bad'
drivers/android/binder.o:drivers/android/.tmp_gl_binder.o:(.text+0xea78):
more undefined references to `__user_bad' follow
'make allmodconfig' now builds successfully for arch/microblaze/.
Fixes: 538722ca3b76 ("microblaze: fix get_user/put_user side-effects")
Reported-by: kbuild test robot <l...@intel.com>
Signed-off-by: Randy Dunlap <rdun...@infradead.org>
Cc: Al Viro <v...@zeniv.linux.org.uk>
Cc: Steven J. Magnani <st...@digidescorp.com>
Cc: Michal Simek <mon...@monstr.eu>
Cc: Jason Gunthorpe <j...@mellanox.com>
Cc: Leon Romanovsky <leo...@mellanox.com>
Cc: Andrew Morton <a...@linux-foundation.org>
---
arch/microblaze/include/asm/uaccess.h | 6 ++++++
1 file changed, 6 insertions(+)
--- lnx-53-rc3.orig/arch/microblaze/include/asm/uaccess.h
+++ lnx-53-rc3/arch/microblaze/include/asm/uaccess.h
@@ -186,6 +186,9 @@ extern long __user_bad(void);
__get_user_asm("lw", __gu_addr, __gu_val, \
__gu_err); \
break; \
+ case 8: \
+ __gu_err = __copy_from_user(&__gu_val, __gu_addr, 8);\
+ break; \
default: \
__gu_err = __user_bad(); \
break; \
@@ -212,6 +215,9 @@ extern long __user_bad(void);
case 4: \
__get_user_asm("lw", (ptr), __gu_val, __gu_err); \
break; \
+ case 8: \
+ __gu_err = __copy_from_user(&__gu_val, ptr, 8); \
+ break; \
default: \
/* __gu_val = 0; __gu_err = -EINVAL;*/ __gu_err = __user_bad();\
} \
