Re: Re: [PATCH 0/4] PCI: replace dublicated MRRS limit quirks

From: Art Nikpal
Date: Mon Jul 05 2021 - 04:35:35 EST


> Does that means keystone and Loongson has the same MRRS problem? And what should I do now?

Look like yes ! and amlogic has the same problem.
I think somebody need to rewrite it all to one common quirk for this problem.

If no one has any objection, I can try to remake it again.

On Fri, Jul 2, 2021 at 9:15 AM 陈华才 <chenhuacai@xxxxxxxxxxx> wrote:
>
> Hi, Bjorn,
>
> &gt; -----原始邮件-----
> &gt; 发件人: "Bjorn Helgaas" <helgaas@xxxxxxxxxx>
> &gt; 发送时间: 2021-07-01 23:46:34 (星期四)
> &gt; 收件人: "Artem Lapkin" <email2tema@xxxxxxxxx>
> &gt; 抄送: narmstrong@xxxxxxxxxxxx, yue.wang@xxxxxxxxxxx, khilman@xxxxxxxxxxxx, lorenzo.pieralisi@xxxxxxx, robh@xxxxxxxxxx, kw@xxxxxxxxx, jbrunet@xxxxxxxxxxxx, christianshewitt@xxxxxxxxx, martin.blumenstingl@xxxxxxxxxxxxxx, linux-pci@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-amlogic@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, art@xxxxxxxxxx, nick@xxxxxxxxxx, gouwa@xxxxxxxxxx, "Huacai Chen" <chenhuacai@xxxxxxxxxxx>
> &gt; 主题: Re: [PATCH 0/4] PCI: replace dublicated MRRS limit quirks
> &gt;
> &gt; [+cc Huacai]
> &gt;
> &gt; On Sat, Jun 19, 2021 at 02:39:48PM +0800, Artem Lapkin wrote:
> &gt; &gt; Replace dublicated MRRS limit quirks by mrrs_limit_quirk from core
> &gt; &gt; * drivers/pci/controller/dwc/pci-keystone.c
> &gt; &gt; * drivers/pci/controller/pci-loongson.c
> &gt;
> &gt; s/dublicated/duplicated/ (several occurrences)
> &gt;
> &gt; Capitalize subject lines.
> &gt;
> &gt; Use "git log --online" to learn conventions and follow them.
> &gt;
> &gt; Add "()" after function names.
> &gt;
> &gt; Capitalize acronyms appropriately (NVMe, MRRS, PCI, etc).
> &gt;
> &gt; End sentences with periods.
> &gt;
> &gt; A "move" patch must include both the removal and the addition and make
> &gt; no changes to the code itself.
> &gt;
> &gt; Amlogic appears without explanation in 2/4. Must be separate patch to
> &gt; address only that specific issue. Should reference published erratum
> &gt; if possible. "Solves some issue" is not a compelling justification.
> &gt;
> &gt; The tree must be consistent and functionally the same or improved
> &gt; after every patch.
> &gt;
> &gt; Add to pci_ids.h only if symbol used more than one place.
> &gt;
> &gt; See
> &gt; https://lore.kernel.org/r/20210701074458.1809532-3-chenhuacai@xxxxxxxxxxx,
> &gt; which looks similar. Combine efforts if possible and cc Huacai so
> &gt; you're both aware of overlapping work.
> &gt;
> &gt; More hints in case they're useful:
> &gt; https://lore.kernel.org/linux-pci/20171026223701.GA25649@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/
> &gt;
> &gt; &gt; Both ks_pcie_quirk loongson_mrrs_quirk was rewritten without any
> &gt; &gt; functionality changes by one mrrs_limit_quirk
> Does that means keystone and Loongson has the same MRRS problem? And what should I do now?
>
> Huacai
> &gt; &gt;
> &gt; &gt; Added DesignWare PCI controller which need same quirk for
> &gt; &gt; * drivers/pci/controller/dwc/pci-meson.c (PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3)
> &gt; &gt;
> &gt; &gt; This quirk can solve some issue for Khadas VIM3/VIM3L(Amlogic)
> &gt; &gt; with HDMI scrambled picture and nvme devices at intensive writing...
> &gt; &gt;
> &gt; &gt; come from:
> &gt; &gt; * https://lore.kernel.org/linux-pci/20210618063821.1383357-1-art@xxxxxxxxxx/
> &gt; &gt;
> &gt; &gt; Artem Lapkin (4):
> &gt; &gt; PCI: move Keystone and Loongson device IDs to pci_ids
> &gt; &gt; PCI: core: quirks: add mrrs_limit_quirk
> &gt; &gt; PCI: keystone move mrrs quirk to core
> &gt; &gt; PCI: loongson move mrrs quirk to core
> &gt; &gt;
> &gt; &gt; --
> &gt; &gt; 2.25.1
> &gt; &gt;
>
>
> </chenhuacai@xxxxxxxxxxx></email2tema@xxxxxxxxx></helgaas@xxxxxxxxxx>