[PATCH] pnp: card_probe(): fix memory leak

We can leak `clink' if drv->probe == 0.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 26 insertions, 22 deletions

diff --git a/drivers/pnp/card.c b/drivers/pnp/card.c
index bb19c64073c..0b4adcb60df 100644
--- a/drivers/pnp/card.c
+++ b/drivers/pnp/card.c
@@ -60,30 +60,34 @@ static void card_remove_first(struct pnp_dev * dev)
         card_remove(dev);
 }
 
-static int card_probe(struct pnp_card * card, struct pnp_card_driver * drv)
+static int card_probe(struct pnp_card *card, struct pnp_card_driver *drv)
 {
-        const struct pnp_card_device_id *id = match_card(drv,card);
-        if (id) {
-                struct pnp_card_link * clink = pnp_alloc(sizeof(struct pnp_card_link));
-                if (!clink)
-                        return 0;
-                clink->card = card;
-                clink->driver = drv;
-                clink->pm_state = PMSG_ON;
-                if (drv->probe) {
-                        if (drv->probe(clink, id)>=0)
-                                return 1;
-                        else {
-                                struct pnp_dev * dev;
-                                card_for_each_dev(card, dev) {
-                                        if (dev->card_link == clink)
-                                                pnp_release_card_device(dev);
-                                }
-                                kfree(clink);
-                        }
-                } else
-                        return 1;
+        const struct pnp_card_device_id *id;
+        struct pnp_card_link *clink;
+        struct pnp_dev *dev;
+
+        if (!drv->probe)
+                return 0;
+        id = match_card(drv,card);
+        if (!id)
+                return 0;
+
+        clink = pnp_alloc(sizeof(*clink));
+        if (!clink)
+                return 0;
+        clink->card = card;
+        clink->driver = drv;
+        clink->pm_state = PMSG_ON;
+
+        if (drv->probe(clink, id) >= 0)
+                return 1;
+
+        /* Recovery */
+        card_for_each_dev(card, dev) {
+                if (dev->card_link == clink)
+                        pnp_release_card_device(dev);
         }
+        kfree(clink);
         return 0;
 }