1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
index 74cebd424032..b9201c2ec38b 100644
--- a/drivers/pcmcia/pcmcia_resource.c
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -95,7 +95,7 @@ static int alloc_io_space(struct pcmcia_socket *s, u_int attr, ioaddr_t *base,
          * potential conflicts, just the most obvious ones.
          */
         for (i = 0; i < MAX_IO_WIN; i++)
-                if ((s->io[i].res) &&
+                if ((s->io[i].res) && *base &&
                     ((s->io[i].res->start & (align-1)) == *base))
                         return 1;
         for (i = 0; i < MAX_IO_WIN; i++) {