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author | Al Viro <viro@zeniv.linux.org.uk> | 2017-03-21 17:10:12 +0100 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-04-11 15:30:55 +0200 |
commit | d491afb8654e84f972ed00cb0e087ad2fae5a1ac (patch) | |
tree | 5bf5fa6d825da863a00715a35a2e92b49a08660a /arch/microblaze | |
parent | microblaze: switch to generic extable.h (diff) | |
download | linux-d491afb8654e84f972ed00cb0e087ad2fae5a1ac.tar.xz linux-d491afb8654e84f972ed00cb0e087ad2fae5a1ac.zip |
microblaze: switch to RAW_COPY_USER
[kudos to Piotr Sroka for spotting a braino in the previous variant]
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/microblaze')
-rw-r--r-- | arch/microblaze/Kconfig | 1 | ||||
-rw-r--r-- | arch/microblaze/include/asm/uaccess.h | 36 |
2 files changed, 9 insertions, 28 deletions
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 85885a501dce..1aff3658a104 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -34,6 +34,7 @@ config MICROBLAZE select TRACING_SUPPORT select VIRT_TO_BUS select CPU_NO_EFFICIENT_FFS + select ARCH_HAS_RAW_COPY_USER config SWAP def_bool n diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h index 2c39375ac871..38f2c9ccef10 100644 --- a/arch/microblaze/include/asm/uaccess.h +++ b/arch/microblaze/include/asm/uaccess.h @@ -336,39 +336,19 @@ extern long __user_bad(void); __gu_err; \ }) - -/* copy_to_from_user */ -#define __copy_from_user(to, from, n) \ - __copy_tofrom_user((__force void __user *)(to), \ - (void __user *)(from), (n)) -#define __copy_from_user_inatomic(to, from, n) \ - __copy_from_user((to), (from), (n)) - -static inline long copy_from_user(void *to, - const void __user *from, unsigned long n) +static inline unsigned long +raw_copy_from_user(void *to, const void __user *from, unsigned long n) { - unsigned long res = n; - might_fault(); - if (likely(access_ok(VERIFY_READ, from, n))) - res = __copy_from_user(to, from, n); - if (unlikely(res)) - memset(to + (n - res), 0, res); - return res; + return __copy_tofrom_user((__force void __user *)to, from, n); } -#define __copy_to_user(to, from, n) \ - __copy_tofrom_user((void __user *)(to), \ - (__force const void __user *)(from), (n)) -#define __copy_to_user_inatomic(to, from, n) __copy_to_user((to), (from), (n)) - -static inline long copy_to_user(void __user *to, - const void *from, unsigned long n) +static inline unsigned long +raw_copy_to_user(void __user *to, const void *from, unsigned long n) { - might_fault(); - if (access_ok(VERIFY_WRITE, to, n)) - return __copy_to_user(to, from, n); - return n; + return __copy_tofrom_user(to, (__force const void __user *)from, n); } +#define INLINE_COPY_FROM_USER +#define INLINE_COPY_TO_USER /* * Copy a null terminated string from userspace. |