From a8eef8a22232e64be76410100c52038b21bda7ed Mon Sep 17 00:00:00 2001
From: Kalle Valo <Kalle.Valo@iki.fi>
Date: Sun, 28 Aug 2005 22:46:57 +0300
Subject: [PATCH] [PATCH] hostap: Fix null pointer dereference in
prism2_pccard_card_present()
With my Buffalo WLI-CF-S11G PC Card kernel oopses every time in
prism2_interrupt() when I try load the hostap module. local->hw_priv is null
during the first call to prism2_interrupt(). It feels like
interrupts are enabled too early, or something.
This patch fixes the symptom, but not the cause.
Signed-off-by: Kalle Valo <Kalle.Valo@iki.fi>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
---
drivers/net/wireless/hostap/hostap_cs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/hostap/hostap_cs.c b/drivers/net/wireless/hostap/hostap_cs.c
index 491cf49042c..e1f1eb8e484 100644
--- a/drivers/net/wireless/hostap/hostap_cs.c
+++ b/drivers/net/wireless/hostap/hostap_cs.c
@@ -212,7 +212,7 @@ static int prism2_event(event_t event, int priority,
static int prism2_pccard_card_present(local_info_t *local)
{
struct hostap_cs_priv *hw_priv = local->hw_priv;
- if (hw_priv->link != NULL &&
+ if (hw_priv != NULL && hw_priv->link != NULL &&
((hw_priv->link->state & (DEV_PRESENT | DEV_CONFIG)) ==
(DEV_PRESENT | DEV_CONFIG)))
return 1;
--
2.41.3