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charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 3/28/2019 12:48 PM, Jisheng Zhang wrote: > On Tue, 26 Mar 2019 20:43:18 +0530Vidya Sagar wrote: > >> >> save pci_bus pointer created by PCIe sub-system's >> pci_scan_root_bus_bridge() to be used by host controller drivers for post >> processing. Tegra host controller driver needs it for the following >> reasons >> - to derive pci_host_bridge structure from pci_bus which is used to >> configure iATU's outbound regions for different windows accesses >> - to traverse and configure downstream hierarchy. One such case is, >> configuring all immediate downstream devices to D0 state before transiting >> link to L2 state. Saving pci_bus pointer seems the best method compared to >> deriving it by other means. > > hmm, I submitted similar patch for another purpose last month, > > https://patchwork.kernel.org/patch/10830029/ > > then v3 weeks ago > > https://lkml.org/lkml/2019/3/18/375 > > And get Acks from Gustavo. But it seems that it isn't merged to dwc next > branch in Lorenzo's tree > > Maybe Lorenzo have some idea of handling this case. > > Thanks > Thanks for the info. I'll drop my patch once I see yours in dwc next branch. Thanks, Vidya Sagar _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel