From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liviu.Dudau@arm.com (Liviu Dudau) Date: Sat, 31 May 2014 01:36:41 +0100 Subject: [PATCH 2/2] of: treat PCI config space as IORESOURCE_MEM type with special flags. In-Reply-To: <1401496601-31983-1-git-send-email-Liviu.Dudau@arm.com> References: <20140530233034.GH1677@bart.dudau.co.uk> <1401496601-31983-1-git-send-email-Liviu.Dudau@arm.com> Message-ID: <1401496601-31983-3-git-send-email-Liviu.Dudau@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org If we have a PCI config space specified in something like a ranges property we should treat it as memory type resource. Use the IORESOURCE_ECFG bit to distinguish the config space from standard IORESOURCE_MEM resources. Signed-off-by: Kumar Gama [Updated commit log and added IORESOURCE_ECFG bit] Signed-off-by: Liviu Dudau --- drivers/of/address.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/of/address.c b/drivers/of/address.c index 2fcfbae..877e9e5 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -123,6 +123,9 @@ static unsigned int of_bus_pci_get_flags(const __be32 *addr) u32 w = be32_to_cpup(addr); switch((w >> 24) & 0x03) { + case 0x00: /* cfg space */ + flags |= IORESOURCE_MEM | IORESOURCE_PCI_ECFG; + break; case 0x01: flags |= IORESOURCE_IO; break; -- 1.9.2