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由 James Bottomley 提交于
unfortunately, if IS_ERR(class_dev) is true, that means class_dev isn't null and the check in the error leg is pointless ... it's also asking for trouble to request unregistration of a device we haven't actually created (although it works currently). Fix by using explicit gotos and unregisters. Acked-by: NFUJITA Tomonori <tomof@acm.org> Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
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