ARM: OMAP2+: powerdomain: introduce logic for finding valid power domain

[deliverable/linux.git] / lib / iovec.c

diff --git a/lib/iovec.c b/lib/iovec.c
index 7a7c2da4cddf47ce92e617a19b6079a16eb16af8..df3abd1eaa4a52da47f806ffa7f4d93867366637 100644 (file)
--- a/lib/iovec.c
+++ b/lib/iovec.c
@@ -85,6 +85,10 @@ EXPORT_SYMBOL(memcpy_toiovecend);
 int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov,
                        int offset, int len)
 {
+       /* No data? Done! */
+       if (len == 0)
+               return 0;
+
        /* Skip over the finished iovecs */
        while (offset >= iov->iov_len) {
                offset -= iov->iov_len;