From: Andrew Morton Date: Fri, 8 Jun 2007 23:29:43 +0000 (-0700) Subject: IB: Fix ib_umem_get() when npages == 0 X-Git-Tag: archive/raspbian/4.9.13-1+rpi1~10^2~36670^2~72 X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/www.github.com/%22bookmarks:///%22http:/www.example.com/cgi/%22https:/www.github.com/%22bookmarks:/?a=commitdiff_plain;h=1d3f4b905a786d69103d9e6d8e92683fb2c7a027;p=linux-4.9.git IB: Fix ib_umem_get() when npages == 0 gcc correctly warned: drivers/infiniband/core/umem.c: In function 'ib_umem_get': drivers/infiniband/core/umem.c:78: warning: 'ret' may be used uninitialized in this function Set ret to 0 in case npages == 0 and the loop isn't entered at all. Signed-off-by: Andrew Morton Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c index d40652a80151..26d0470eef6e 100644 --- a/drivers/infiniband/core/umem.c +++ b/drivers/infiniband/core/umem.c @@ -121,6 +121,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr, cur_base = addr & PAGE_MASK; + ret = 0; while (npages) { ret = get_user_pages(current, current->mm, cur_base, min_t(int, npages,