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authorDaniel Ritz <daniel.ritz-ml@swissonline.ch>2006-04-14 19:42:13 +0400
committerDominik Brodowski <linux@dominikbrodowski.net>2006-04-22 02:49:19 +0400
commit48b950ff241fca03a6969a5eb6a42a02722678d4 (patch)
treed6a5fb6080355af987b7d60e5308b68d85d85ae7 /drivers/pcmcia
parentdaaeb72bdf22873e6fa6497550c9e1d9a8825fea (diff)
downloadlinux-48b950ff241fca03a6969a5eb6a42a02722678d4.tar.xz
[PATCH] pcmcia/pcmcia_resource.c: fix crash when using Cardbus cards
Using the old ioctl interface together with cardbus card gives a NULL pointer dereference since cardbus devices don't have a struct pcmcia_device. also s->io[0].res can be NULL as well. Fix is to move the pcmcia code after the cardbus code and to check for a null pointer. Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/pcmcia')
-rw-r--r--drivers/pcmcia/pcmcia_resource.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
index cc3402c9b2c3..3131bb0a0095 100644
--- a/drivers/pcmcia/pcmcia_resource.c
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -208,7 +208,6 @@ int pccard_get_configuration_info(struct pcmcia_socket *s,
if (!(s->state & SOCKET_PRESENT))
return CS_NO_CARD;
- config->Function = p_dev->func;
#ifdef CONFIG_CARDBUS
if (s->state & SOCKET_CARDBUS) {
@@ -222,14 +221,22 @@ int pccard_get_configuration_info(struct pcmcia_socket *s,
config->AssignedIRQ = s->irq.AssignedIRQ;
if (config->AssignedIRQ)
config->Attributes |= CONF_ENABLE_IRQ;
- config->BasePort1 = s->io[0].res->start;
- config->NumPorts1 = s->io[0].res->end - config->BasePort1 + 1;
+ if (s->io[0].res) {
+ config->BasePort1 = s->io[0].res->start;
+ config->NumPorts1 = s->io[0].res->end - config->BasePort1 + 1;
+ }
}
return CS_SUCCESS;
}
#endif
- c = (p_dev) ? p_dev->function_config : NULL;
+ if (p_dev) {
+ c = p_dev->function_config;
+ config->Function = p_dev->func;
+ } else {
+ c = NULL;
+ config->Function = 0;
+ }
if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
config->Attributes = 0;