diff options
| -rw-r--r-- | arch/mips/mm/cache.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c index 611b48dde737..314701a66b13 100644 --- a/arch/mips/mm/cache.c +++ b/arch/mips/mm/cache.c @@ -56,6 +56,8 @@ EXPORT_SYMBOL(_dma_cache_inv); asmlinkage int sys_cacheflush(unsigned long __user addr, unsigned long bytes, unsigned int cache) { + if (bytes == 0) + return 0; if (!access_ok(VERIFY_WRITE, (void __user *) addr, bytes)) return -EFAULT; |