pcmcia: preserve configuration information if request_io fails partly

If pcmcia_request_io() only fails partly -- for the second of two
requested resources -- preserve the configuration settings for the
first one.

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

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
index a5c176598d95..9ba4dade69a4 100644
--- a/drivers/pcmcia/pcmcia_resource.c
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -595,7 +595,13 @@ int pcmcia_request_io(struct pcmcia_device *p_dev)
         if (c->io[1].end) {
                 ret = alloc_io_space(s, &c->io[1], p_dev->io_lines);
                 if (ret) {
+                        struct resource tmp = c->io[0];
+                        /* release the previously allocated resource */
                         release_io_space(s, &c->io[0]);
+                        /* but preserve the settings, for they worked... */
+                        c->io[0].end = resource_size(&tmp);
+                        c->io[0].start = tmp.start;
+                        c->io[0].flags = tmp.flags;
                         goto out;
                 }
         } else