blackfin: sync data in blackfin write buffer
Sync data in blackfin write buffer to DRAM before return from copy_to_user. Otherwise, application may read wrong data from stat syscall occasionally. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
This commit is contained in:
parent
c73bc7026d
commit
293be8de49
|
@ -191,6 +191,7 @@ copy_to_user(void __user *to, const void *from, unsigned long n)
|
||||||
memcpy((void __force *)to, from, n);
|
memcpy((void __force *)to, from, n);
|
||||||
else
|
else
|
||||||
return n;
|
return n;
|
||||||
|
SSYNC();
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue