Re: [PATCH] PCI: ixp4xx: Use PCI_CONF1_ADDRESS() macro

From: Linus Walleij
Date: Fri Mar 10 2023 - 17:38:27 EST


On Wed, Sep 28, 2022 at 2:25 PM Pali Rohár <pali@xxxxxxxxxx> wrote:

> Simplify pci-ixp4xx.c driver code and use new PCI_CONF1_ADDRESS() macro for
> accessing PCI config space.
>
> Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>

This does not compile right off (on kernel v6.3-rc1), I had to add this:

diff --git a/drivers/pci/controller/pci-ixp4xx.c
b/drivers/pci/controller/pci-ixp4xx.c
index c83b5ae0b017..e44252db6085 100644
--- a/drivers/pci/controller/pci-ixp4xx.c
+++ b/drivers/pci/controller/pci-ixp4xx.c
@@ -26,6 +26,7 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/bits.h>
+#include "../pci.h"

/* Register offsets */
#define IXP4XX_PCI_NP_AD 0x00

After this it compiles, boots and mounts root on a PCI-USB-connected
rootfs, so it seems to work fine!
Tested-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Yours,
Linus Walleij