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[IA64] Check return from device_register() in cx_device_register()
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>
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@ -191,6 +191,7 @@ cx_device_register(nasid_t nasid, int part_num, int mfg_num,
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struct hubdev_info *hubdev, int bt)
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{
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struct cx_dev *cx_dev;
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int r;
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cx_dev = kzalloc(sizeof(struct cx_dev), GFP_KERNEL);
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DBG("cx_dev= 0x%p\n", cx_dev);
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@ -207,7 +208,11 @@ cx_device_register(nasid_t nasid, int part_num, int mfg_num,
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cx_dev->dev.bus = &tiocx_bus_type;
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cx_dev->dev.release = tiocx_bus_release;
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dev_set_name(&cx_dev->dev, "%d", cx_dev->cx_id.nasid);
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device_register(&cx_dev->dev);
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r = device_register(&cx_dev->dev);
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if (r) {
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kfree(cx_dev);
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return r;
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}
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get_device(&cx_dev->dev);
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device_create_file(&cx_dev->dev, &dev_attr_cxdev_control);
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