From 596f2d0554352f1089f7478b309b27d8cdf5cd4f Mon Sep 17 00:00:00 2001
From: Eugene Teo <eteo@redhat.com>
Date: Sat, 19 May 2007 11:09:20 +0800
Subject: [PATCH] [PATCH] drivers/net/wireless/libertas/fw.c: fix
use-before-check
NULL checks should be performed before the dereference.
Spotted by the Coverity checker.
Signed-off-by: Eugene Teo <eteo@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/libertas/fw.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/net/wireless/libertas/fw.c b/drivers/net/wireless/libertas/fw.c
index 441123c85e62..5c63c9b1659c 100644
--- a/drivers/net/wireless/libertas/fw.c
+++ b/drivers/net/wireless/libertas/fw.c
@@ -333,18 +333,22 @@ static void command_timer_fn(unsigned long data)
unsigned long flags;
ptempnode = adapter->cur_cmd;
+ if (ptempnode == NULL) {
+ lbs_pr_debug(1, "PTempnode Empty\n");
+ return;
+ }
+
cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
+ if (!cmd) {
+ lbs_pr_debug(1, "cmd is NULL\n");
+ return;
+ }
lbs_pr_info("command_timer_fn fired (%x)\n", cmd->command);
if (!adapter->fw_ready)
return;
- if (ptempnode == NULL) {
- lbs_pr_debug(1, "PTempnode Empty\n");
- return;
- }
-
spin_lock_irqsave(&adapter->driver_lock, flags);
adapter->cur_cmd = NULL;
spin_unlock_irqrestore(&adapter->driver_lock, flags);
--
2.20.1