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[IA64] Check return from device_register() in cx_device_register()

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The device_register() is declared with must_check, causing this:

arch/ia64/sn/kernel/tiocx.c: In function 'cx_device_register':
arch/ia64/sn/kernel/tiocx.c:210:17: warning: ignoring return value of 'device_register', declared with attribute warn_unused_result

Check the return value, and free resources if it fails.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Paul Gortmaker 2012-02-26 13:46:07 -05:00 committed by Tony Luck
parent c19ce0ab53
commit 454ca6040a
1 changed files with 6 additions and 1 deletions
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7
arch/ia64/sn/kernel/tiocx.c
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@ -191,6 +191,7 @@ cx_device_register(nasid_t nasid, int part_num, int mfg_num,
struct hubdev_info *hubdev, int bt)
{
struct cx_dev *cx_dev;
int r;
cx_dev = kzalloc(sizeof(struct cx_dev), GFP_KERNEL);
DBG("cx_dev= 0x%p\n", cx_dev);
@ -207,7 +208,11 @@ cx_device_register(nasid_t nasid, int part_num, int mfg_num,
cx_dev->dev.bus = &tiocx_bus_type;
cx_dev->dev.release = tiocx_bus_release;
dev_set_name(&cx_dev->dev, "%d", cx_dev->cx_id.nasid);
device_register(&cx_dev->dev);
r = device_register(&cx_dev->dev);
if (r) {
kfree(cx_dev);
return r;
}
get_device(&cx_dev->dev);
device_create_file(&cx_dev->dev, &dev_attr_cxdev_control);