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authorCyrill Gorcunov <gorcunov@gmail.com>2007-03-06 05:47:44 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2007-03-09 22:52:25 -0500
commitee17b289732e04fdcdd8ce2ce19b18d3e8b08e20 (patch)
tree4506f7400f7bde608339d286f6ca4c3fd316fe09 /drivers/usb
parent834dbca5b6b79ddb7cf56001ea7b6d4481fdf1e7 (diff)
USB Elan FTDI: check for workqueue creation
Avoid NULL pointer usage if workqueue creation failed. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/misc/ftdi-elan.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
index 0c1d66ddb812..bc3327e3dd78 100644
--- a/drivers/usb/misc/ftdi-elan.c
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -2905,17 +2905,31 @@ static int __init ftdi_elan_init(void)
2905{ 2905{
2906 int result; 2906 int result;
2907 printk(KERN_INFO "driver %s built at %s on %s\n", ftdi_elan_driver.name, 2907 printk(KERN_INFO "driver %s built at %s on %s\n", ftdi_elan_driver.name,
2908 __TIME__, __DATE__); 2908 __TIME__, __DATE__);
2909 init_MUTEX(&ftdi_module_lock); 2909 init_MUTEX(&ftdi_module_lock);
2910 INIT_LIST_HEAD(&ftdi_static_list); 2910 INIT_LIST_HEAD(&ftdi_static_list);
2911 status_queue = create_singlethread_workqueue("ftdi-status-control"); 2911 status_queue = create_singlethread_workqueue("ftdi-status-control");
2912 if (!status_queue)
2913 goto err1;
2912 command_queue = create_singlethread_workqueue("ftdi-command-engine"); 2914 command_queue = create_singlethread_workqueue("ftdi-command-engine");
2915 if (!command_queue)
2916 goto err2;
2913 respond_queue = create_singlethread_workqueue("ftdi-respond-engine"); 2917 respond_queue = create_singlethread_workqueue("ftdi-respond-engine");
2918 if (!respond_queue)
2919 goto err3;
2914 result = usb_register(&ftdi_elan_driver); 2920 result = usb_register(&ftdi_elan_driver);
2915 if (result) 2921 if (result)
2916 printk(KERN_ERR "usb_register failed. Error number %d\n", 2922 printk(KERN_ERR "usb_register failed. Error number %d\n",
2917 result); 2923 result);
2918 return result; 2924 return result;
2925
2926 err3:
2927 destroy_workqueue(command_queue);
2928 err2:
2929 destroy_workqueue(status_queue);
2930 err1:
2931 printk(KERN_ERR "%s couldn't create workqueue\n", ftdi_elan_driver.name);
2932 return -ENOMEM;
2919} 2933}
2920 2934
2921static void __exit ftdi_elan_exit(void) 2935static void __exit ftdi_elan_exit(void)