[PATCH] pcmcia: au1000_generic fix

The previous code did something like,

if (error) goto out_err;
....
do {
             struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i);
              del_timer_sync(&skt->poll_timer);
               pcmcia_unregister_socket(&skt->socket);
out_err:
               flush_scheduled_work();
               ops->hw_shutdown(skt);
               i--;
} while (i > 0)
.....

- On the error path, skt would not contain a valid value for the first
  iteration (skt is masked by uninitialized automatic skt)

- Does not do hw_shutdown() for 0th element of PCMCIA_SOCKET

Signed-off-by: Om Narasimhan <om.turyx@gmail.com>
Cc: "Yoichi Yuasa" <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 9 insertions, 6 deletions

diff --git a/drivers/pcmcia/au1000_generic.c b/drivers/pcmcia/au1000_generic.c
index d5dd0ce65536..5387de6216fb 100644
--- a/drivers/pcmcia/au1000_generic.c
+++ b/drivers/pcmcia/au1000_generic.c
@@ -351,6 +351,7 @@ struct skt_dev_info {
 int au1x00_pcmcia_socket_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr)
 {
         struct skt_dev_info *sinfo;
+        struct au1000_pcmcia_socket *skt;
         int ret, i;
 
         sinfo = kzalloc(sizeof(struct skt_dev_info), GFP_KERNEL);
@@ -365,7 +366,7 @@ int au1x00_pcmcia_socket_probe(struct device *dev, struct pcmcia_low_level *ops,
          * Initialise the per-socket structure.
          */
         for (i = 0; i < nr; i++) {
-                struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i);
+                skt = PCMCIA_SOCKET(i);
                 memset(skt, 0, sizeof(*skt));
 
                 skt->socket.resource_ops = &pccard_static_ops;
@@ -438,17 +439,19 @@ int au1x00_pcmcia_socket_probe(struct device *dev, struct pcmcia_low_level *ops,
         dev_set_drvdata(dev, sinfo);
         return 0;
 
-        do {
-                struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i);
+
+out_err:
+        flush_scheduled_work();
+        ops->hw_shutdown(skt);
+        while (i-- > 0) {
+                skt = PCMCIA_SOCKET(i);
 
                 del_timer_sync(&skt->poll_timer);
                 pcmcia_unregister_socket(&skt->socket);
-out_err:
                 flush_scheduled_work();
                 ops->hw_shutdown(skt);
 
-                i--;
-        } while (i > 0);
+        }
         kfree(sinfo);
 out:
         return ret;