Commit 293be8de authored Jan 31, 2013 by Sonic Zhang Committed by Bob Liu Feb 20, 2013

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>

parent c73bc702

arch/blackfin/include/asm/uaccess.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -191,6 +191,7 @@ copy_to_user(void __user to, const void from, unsigned long n)
		memcpy((void __force *)to, from, n);
		else
		return n;
		SSYNC();
		return 0;
		}