From: Benjamin Herrenschmidt Date: Fri, 28 Sep 2007 23:06:21 +0000 (+1000) Subject: Fix bogus PCI quirk for e100 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1bef7dc00caa7bcbff4fdb55e599e2591461fafa;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git Fix bogus PCI quirk for e100 Linas reported me that some machines were crashing at boot in quirk_e100_interrupt. It appears that this quirk is doing an ioremap directly on a PCI BAR value, which isn't legal and will cause all sorts of bad things to happen on architectures where PCI BARs don't directly match processor bus addresses. This fixes it by using the proper PCI resources instead which is possible since the quirk has been moved by a previous commit to happen late enough for that. Signed-off-by: Benjamin Herrenschmidt Acked-by: Linas Vepstas Signed-off-by: Linus Torvalds --- diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 7dcaa09b3c20..50f2dd9e1bb2 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -1444,7 +1444,6 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, quirk_netmos); static void __devinit quirk_e100_interrupt(struct pci_dev *dev) { u16 command; - u32 bar; u8 __iomem *csr; u8 cmd_hi; @@ -1476,12 +1475,12 @@ static void __devinit quirk_e100_interrupt(struct pci_dev *dev) * re-enable them when it's ready. */ pci_read_config_word(dev, PCI_COMMAND, &command); - pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar); - if (!(command & PCI_COMMAND_MEMORY) || !bar) + if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0)) return; - csr = ioremap(bar, 8); + /* Convert from PCI bus to resource space. */ + csr = ioremap(pci_resource_start(dev, 0), 8); if (!csr) { printk(KERN_WARNING "PCI: Can't map %s e100 registers\n", pci_name(dev));