From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: [PATCH v2 2/2] PCI: mediatek: Fixup class type for MT7622 Date: Thu, 21 Dec 2017 10:08:50 +0800 Message-ID: <1513822130-18213-3-git-send-email-honghui.zhang@mediatek.com> References: <1513822130-18213-1-git-send-email-honghui.zhang@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1513822130-18213-1-git-send-email-honghui.zhang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org, lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org, treding-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, robin.murphy-5wv7dgnIgG8@public.gmane.org Cc: catalin.marinas-5wv7dgnIgG8@public.gmane.org, will.deacon-5wv7dgnIgG8@public.gmane.org, youlin.pei-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, kendrick.hsu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org, arnd-r2nGTMty4D4@public.gmane.org, tfiga-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, eddie.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, pebolle-IWqWACnzNjzz+pZb47iToQ@public.gmane.org, srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, erin.lo-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, djkurtz-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, p.zabel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org, l.stach-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org List-Id: iommu@lists.linux-foundation.org From: Honghui Zhang The host bridge of MT7622 has hardware code the class code to an arbitrary, meaningless value, fix that. Signed-off-by: Honghui Zhang --- drivers/pci/host/pcie-mediatek.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/pci/host/pcie-mediatek.c b/drivers/pci/host/pcie-mediatek.c index 3248771..ae8d367 100644 --- a/drivers/pci/host/pcie-mediatek.c +++ b/drivers/pci/host/pcie-mediatek.c @@ -1174,3 +1174,15 @@ static struct platform_driver mtk_pcie_driver = { }, }; builtin_platform_driver(mtk_pcie_driver); + +/* The host bridge of MT7622 advertises the wrong device class. */ +static void mtk_fixup_class(struct pci_dev *dev) +{ + dev->class = PCI_CLASS_BRIDGE_PCI << 8; +} + +/* + * The HW default value of vendor id and device id for mt7622 are 0x0e8d, + * 0x3258, which are arbitrary, meaningless values. + */ +DECLARE_PCI_FIXUP_EARLY(0x0e8d, 0x3258, mtk_fixup_class); -- 2.6.4