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s390/uaccess: add default cases for __put_user_fn()/__get_user_fn()

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Add default cases for __put_user_fn()/__get_user_fn(). This doesn't
fix anything since the functions are only called with sane values.

However we get rid of smatch warnings:
./arch/s390/include/asm/uaccess.h:143 __get_user_fn() error: uninitialized symbol 'rc'.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2020-10-08 16:28:15 +02:00 • committed by Vasily Gorbik
parent 4366dd7251
commit db52739756
1 changed files with 9 additions and 4 deletions
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13
arch/s390/include/asm/uaccess.h
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@ -60,6 +60,9 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long n);
#define INLINE_COPY_TO_USER
#endif
int __put_user_bad(void) __attribute__((noreturn));
int __get_user_bad(void) __attribute__((noreturn));
#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
#define __put_get_user_asm(to, from, size, spec) \
@ -109,6 +112,9 @@ static __always_inline int __put_user_fn(void *x, void __user *ptr, unsigned lon
(unsigned long *)x,
size, spec);
break;
default:
__put_user_bad();
break;
}
return rc;
}
@ -139,6 +145,9 @@ static __always_inline int __get_user_fn(void *x, const void __user *ptr, unsign
(unsigned long __user *)ptr,
size, spec);
break;
default:
__get_user_bad();
break;
}
return rc;
}
@ -190,8 +199,6 @@ static inline int __get_user_fn(void *x, const void __user *ptr, unsigned long s
})
int __put_user_bad(void) __attribute__((noreturn));
#define __get_user(x, ptr) \
({ \
int __gu_err = -EFAULT; \
@ -238,8 +245,6 @@ int __put_user_bad(void) __attribute__((noreturn));
__get_user(x, ptr); \
})
int __get_user_bad(void) __attribute__((noreturn));
unsigned long __must_check
raw_copy_in_user(void __user *to, const void __user *from, unsigned long n);