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[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>
This commit is contained in:
Daniel Ritz 2006-04-14 17:42:13 +02:00 committed by Dominik Brodowski
parent daaeb72bdf
commit 48b950ff24
1 changed files with 11 additions and 4 deletions
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15
drivers/pcmcia/pcmcia_resource.c
View File

@ -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;