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authorDominik Brodowski <linux@dominikbrodowski.net>2010-04-17 17:37:33 +0200
committerDominik Brodowski <linux@dominikbrodowski.net>2010-04-17 17:37:33 +0200
commita8408c17d0038b76a83affb1b56dc18fa1e7ed86 (patch)
tree07b2846455e32ffc5b1848737d1a4229a786cf04 /drivers/pcmcia
parent41b97ab5050088cd23692d578e7294c7be26109a (diff)
downloadlinux-2.6.34-ux500-a8408c17d0038b76a83affb1b56dc18fa1e7ed86.tar.gz
pcmcia: avoid late calls to pccard_validate_cis
pccard_validate_cis() nowadays destroys the CIS cache. Therefore, calling it after card setup should be avoided. We can't control the deprecated PCMCIA ioctl (which is only used on ARM nowadays), but we can avoid -- and report -- any other calls. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/pcmcia')
-rw-r--r--drivers/pcmcia/cistpl.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c
index f230f6543bf..854959cada3 100644
--- a/drivers/pcmcia/cistpl.c
+++ b/drivers/pcmcia/cistpl.c
@@ -1484,6 +1484,11 @@ int pccard_validate_cis(struct pcmcia_socket *s, unsigned int *info)
if (!s)
return -EINVAL;
+ if (s->functions) {
+ WARN_ON(1);
+ return -EINVAL;
+ }
+
/* We do not want to validate the CIS cache... */
mutex_lock(&s->ops_mutex);
destroy_cis_cache(s);
@@ -1639,7 +1644,7 @@ static ssize_t pccard_show_cis(struct kobject *kobj,
count = 0;
else {
struct pcmcia_socket *s;
- unsigned int chains;
+ unsigned int chains = 1;
if (off + count > size)
count = size - off;
@@ -1648,7 +1653,7 @@ static ssize_t pccard_show_cis(struct kobject *kobj,
if (!(s->state & SOCKET_PRESENT))
return -ENODEV;
- if (pccard_validate_cis(s, &chains))
+ if (!s->functions && pccard_validate_cis(s, &chains))
return -EIO;
if (!chains)
return -ENODATA;