Hi, On Tue, Jan 22, 2013 at 10:51:32AM +0800, Chao Xie wrote: > On Mon, Jan 21, 2013 at 11:51 PM, Russell King - ARM Linux > <linux@xxxxxxxxxxxxxxxx> wrote: > > On Mon, Jan 21, 2013 at 05:07:36AM -0500, Chao Xie wrote: > >> + mv_phy->extern_chip.head = devm_kzalloc(&pdev->dev, > >> + sizeof(*mv_phy->extern_chip.head), > >> + GFP_KERNEL); > >> + if (mv_phy->extern_chip.head == NULL) > >> + return -ENOMEM; > >> + ATOMIC_INIT_NOTIFIER_HEAD(mv_phy->extern_chip.head); > > > > Why do you need to allocate an atomic notifier list head as an entirely > > separate data structure? > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > Th reason is that the original code seperate the extern_chip and phy > support. So it depends > on the ->head to detect whether extern_chip is initialized or not. > Now it is combined with phy, the ->phy pointer can do the job. does that need to be dynamically allocated ? -- balbi
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