From: Ville Syrjälä <ville.syrj...@linux.intel.com>
The casts in __copy_{from,to}_user_inatomic lead to sparse warnings.
Drop the casts to get rid of the warnings.
Example:
CHECK drivers/gpu/drm/i915/i915_gem.c
arch/x86/include/asm/uaccess_64.h:213:40: warning: incorrect type in argument 1
(different address spaces)
arch/x86/include/asm/uaccess_64.h:213:40: expected void [noderef] <asn:1>*dst
arch/x86/include/asm/uaccess_64.h:213:40: got void *<noident>
The warnings got introduced by this commit:
commit ff47ab4ff3cddfa7bc1b25b990e24abe2ae474ff
Author: Andi Kleen <a...@linux.intel.com>
Date: Fri Aug 16 14:17:19 2013 -0700
x86: Add 1/2/4/8 byte optimization to 64bit __copy_{from,to}_user_inatomic
Cc: Andi Kleen <a...@linux.intel.com>
Cc: H. Peter Anvin <h...@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
arch/x86/include/asm/uaccess_64.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/uaccess_64.h
b/arch/x86/include/asm/uaccess_64.h
index 190413d..12a26b9 100644
--- a/arch/x86/include/asm/uaccess_64.h
+++ b/arch/x86/include/asm/uaccess_64.h
@@ -204,13 +204,13 @@ int __copy_in_user(void __user *dst, const void __user
*src, unsigned size)
static __must_check __always_inline int
__copy_from_user_inatomic(void *dst, const void __user *src, unsigned size)
{
- return __copy_from_user_nocheck(dst, (__force const void *)src, size);
+ return __copy_from_user_nocheck(dst, src, size);
}
static __must_check __always_inline int
__copy_to_user_inatomic(void __user *dst, const void *src, unsigned size)
{
- return __copy_to_user_nocheck((__force void *)dst, src, size);
+ return __copy_to_user_nocheck(dst, src, size);
}
extern long __copy_user_nocache(void *dst, const void __user *src,
--
1.8.3.2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
