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| author | Cyrill Gorcunov <gorcunov@gmail.com> | 2007-03-06 11:47:44 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-03-10 04:52:25 +0100 |
| commit | ee17b289732e04fdcdd8ce2ce19b18d3e8b08e20 (patch) | |
| tree | 4506f7400f7bde608339d286f6ca4c3fd316fe09 /drivers/usb/misc/ftdi-elan.c | |
| parent | USB: fix spinlock recursion in cdc-acm.c (diff) | |
| download | linux-ee17b289732e04fdcdd8ce2ce19b18d3e8b08e20.tar.xz linux-ee17b289732e04fdcdd8ce2ce19b18d3e8b08e20.zip | |
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/misc/ftdi-elan.c')
| -rw-r--r-- | drivers/usb/misc/ftdi-elan.c | 18 |
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) { int result; printk(KERN_INFO "driver %s built at %s on %s\n", ftdi_elan_driver.name, - __TIME__, __DATE__); + __TIME__, __DATE__); init_MUTEX(&ftdi_module_lock); INIT_LIST_HEAD(&ftdi_static_list); status_queue = create_singlethread_workqueue("ftdi-status-control"); + if (!status_queue) + goto err1; command_queue = create_singlethread_workqueue("ftdi-command-engine"); + if (!command_queue) + goto err2; respond_queue = create_singlethread_workqueue("ftdi-respond-engine"); + if (!respond_queue) + goto err3; result = usb_register(&ftdi_elan_driver); if (result) printk(KERN_ERR "usb_register failed. Error number %d\n", - result); + result); return result; + + err3: + destroy_workqueue(command_queue); + err2: + destroy_workqueue(status_queue); + err1: + printk(KERN_ERR "%s couldn't create workqueue\n", ftdi_elan_driver.name); + return -ENOMEM; } static void __exit ftdi_elan_exit(void) |