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author | David S. Miller <davem@davemloft.net> | 2016-10-30 12:42:58 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2016-10-30 12:42:58 -0400 |
commit | 27058af401e49d88a905df000dd26f443fcfa8ce (patch) | |
tree | 819f32113d3b8374b9fbf72e2202d4c4d4511a60 /arch/blackfin/include/asm/uaccess.h | |
parent | firewire: net: really fix maximum possible MTU (diff) | |
parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (diff) | |
download | linux-dev-27058af401e49d88a905df000dd26f443fcfa8ce.tar.xz linux-dev-27058af401e49d88a905df000dd26f443fcfa8ce.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Mostly simple overlapping changes.
For example, David Ahern's adjacency list revamp in 'net-next'
conflicted with an adjacency list traversal bug fix in 'net'.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/blackfin/include/asm/uaccess.h')
-rw-r--r-- | arch/blackfin/include/asm/uaccess.h | 32 |
1 files changed, 20 insertions, 12 deletions
diff --git a/arch/blackfin/include/asm/uaccess.h b/arch/blackfin/include/asm/uaccess.h index 0a2a70096d8b..0eff88aa6d6a 100644 --- a/arch/blackfin/include/asm/uaccess.h +++ b/arch/blackfin/include/asm/uaccess.h @@ -163,18 +163,29 @@ static inline int bad_user_access_length(void) : "a" (__ptr(ptr))); \ }) -#define __copy_from_user(to, from, n) copy_from_user(to, from, n) -#define __copy_to_user(to, from, n) copy_to_user(to, from, n) #define __copy_to_user_inatomic __copy_to_user #define __copy_from_user_inatomic __copy_from_user static inline unsigned long __must_check +__copy_from_user(void *to, const void __user *from, unsigned long n) +{ + memcpy(to, (const void __force *)from, n); + return 0; +} + +static inline unsigned long __must_check +__copy_to_user(void __user *to, const void *from, unsigned long n) +{ + memcpy((void __force *)to, from, n); + SSYNC(); + return 0; +} + +static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) { - if (likely(access_ok(VERIFY_READ, from, n))) { - memcpy(to, (const void __force *)from, n); - return 0; - } + if (likely(access_ok(VERIFY_READ, from, n))) + return __copy_from_user(to, from, n); memset(to, 0, n); return n; } @@ -182,12 +193,9 @@ copy_from_user(void *to, const void __user *from, unsigned long n) static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n) { - if (access_ok(VERIFY_WRITE, to, n)) - memcpy((void __force *)to, from, n); - else - return n; - SSYNC(); - return 0; + if (likely(access_ok(VERIFY_WRITE, to, n))) + return __copy_to_user(to, from, n); + return n; } /* |