From a8408c17d0038b76a83affb1b56dc18fa1e7ed86 Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Sat, 17 Apr 2010 17:37:33 +0200 Subject: [PATCH] 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 --- drivers/pcmcia/cistpl.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c index f230f6543bff..854959cada3a 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; -- 2.20.1