On Monday 22 September 2014 12:43:17 Liviu Dudau wrote: > > > > From e798af4fc2f664d1aff7e863489b8298f90e716e Mon Sep 17 00:00:00 2001 > > From: Robert Richter <rrichter@xxxxxxxxxx> > > Date: Mon, 22 Sep 2014 10:46:01 +0200 > > Subject: [PATCH] OF: PCI: Fix creation of mem-mapped pci host bridges > > > > The pci host bridge was not created if io_base was not set when > > calling of_pci_get_host_bridge_resources(). This is esp. the case for > > mem-mapped io (IORESOURCE_MEM). This patch fixes this. Function > > parameter io_base is optional now. > > I think the message is misleading. What you want to do is make io_base > optional for the case where the PCI host bridge only expects to have only > IORESOURCE_MEM ranges and doesn't care about IORESOURCE_IO ones. > > As I'm going to touch this area again to address a comment from Bjorn, > do you mind if I roll this patch into mine with your Signed-off-by and > the mention that you have made io_base optional? I think the best way to deal with this is to move the check for io_base down into the place where it is used: As long as the DT only specifies IORESOURCE_MEM windows, we don't need to look at io_base, but if the host controller driver does not support IORESOURCE_IO while the DT specifies it, I guess it would be nice to return an error. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
