pcmcia: add locking to pcmcia_{read,write}_cis_mem

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c
index c13424f7b479..19cecb539759 100644
--- a/drivers/pcmcia/rsrc_nonstatic.c
+++ b/drivers/pcmcia/rsrc_nonstatic.c
@@ -273,6 +273,11 @@ static int readable(struct pcmcia_socket *s, struct resource *res,
 {
         int ret = -EINVAL;
 
+        if (s->fake_cis) {
+                dev_dbg(&s->dev, "fake CIS is being used: can't validate mem\n");
+                return 0;
+        }
+
         s->cis_mem.res = res;
         s->cis_virt = ioremap(res->start, s->map_size);
         if (s->cis_virt) {